African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6848

AJAR Articles

Evaluation of DSSAT model for sprinkler irrigated potato: A case study of Northeast Algeria

July 2016

This study was conducted in order to evaluate the performance of potato crop in two major irrigation schemes situated in the Northeast of Algeria. This area is characterized by alluvial soil texture, very fine clay, a very flat topography, and a typical Mediterranean climate. This was done to guide farmers on any changes to their crop management to improve the yields of potato crops. The model SUBSTOR-potato (Decision...

Author(s): Rabia Malkia, Tarik Hartani and Farida Dechmi

Participatory evaluation cum demonstration of improved faba bean cultivars with inorganic and bio- fertilizers in West Gojam Zone, Amhara Region, Ethiopia

July 2016

The trail was conducted in Yilemana Densa district of the Amhara Region in 2013 with the objectives to evaluate the performance of improved faba bean cultivars with P-fertilizer and bio fertilizer under on-farm conditions, while demonstrating such a technology package to farmers thereby paving the way for wider adoption. The trial consisted of four treatments (two improved cultivars with and without fertilizers) was...

Author(s): Daniel Tilahun, Yihenew Awoke and Anteneh Abewa

Companion plants associated with kale increase the abundance and species richness of the natural-enemies of Lipaphis erysimi (Kaltenbach) (Hemiptera: Aphididae)

July 2016

The effects of intercropping of Brassicaceae with coriander (Coriandrum sativum), dill (Anethum graveolens), African marigold (Tagetes erecta) and calendula (Calendula officinalis) on the abundance, species richness and diversity of predators and parasitoids of Lipaphis erysimi have been assessed. The numbers of aphids, parasitized aphids and natural enemies were determined during two consecutive phases. The first...

Author(s): Valkíria Fabiana da Silva, Luís Cláudio Paterno Silveira, Alexandre dos Santos, Adriano Jorge Nunes dos Santos and Vitor Barrile Tomazella

Wheat stem rust disease incidence and severity associated with farming practices in the Central Rift Valley of Kenya

July 2016

Stem rust (Puccinia graminis f.sp.tritici) is a major disease of wheat that occurs more in the main wheat growing regions of Kenya. The objective of this study was to assess the incidence and severity of wheat stem rust during the 2015 growing season. A survey was conducted in Mau-Narok, Njoro and Kabatini regions. During the survey work, 149 small scale wheat growers’ fields were assessed. The results revealed...

Author(s): Beatrice Nafula Tenge, Pascal Peter Okwiri Ojwang, Daniel Otaye and Maurice Edwards Oyoo

Changes in soil organic carbon fractions in response to sugarcane planting in the central-south region of Brazil

July 2016

Sugarcane planting area in Brazil has considerably increased during recent years by occupying areas used for pasture and grain crops production. Land use change (LUC) processes related to sugarcane expansion can affect the soil organic carbon (SOC) stocks, and the quality of the soil organic matter. Preliminary studies have shown that the land-use transition into sugarcane leadto a decrease in the SOC, however no...

Author(s): A. M. Silva-Olaya, C. E. P. Cerri, and C. C. Cerri

Effects of hormone balance on Korean Hackberry seed germination

July 2016

Korean Hackberry (Celtis koraiensis Nakai), an ornamental, deciduous tree, lacks species resources, and low germination percentage also prevent the exploitation. Thus it becomes necessary to investage the mechanism of seed dormancy. This research explored the effect of plant hormone and seed coat (endocarp and testa) on seed germination. Endogenous hormone concentration, protein content, total soluble sugars, total...

Author(s): Yu Yang Liu and De Kui Zang

Spatial variability of weeds in an Oxisol under no-tillage system

July 2016

In the global agribusiness, the herbicide use is a major problem for sustainable production, in this sense, it is necessary to better understand the interaction of weed species and floristic composition such as biodiversity indicators. The objective of this study was to analyze the spatial variability of weeds in an Oxisol under no-tillage system. Samples were taken in an area of 0.5 ha, in 50 sampling points with...

Author(s): Glécio Machado Siqueira, Raimunda Alves Silva, Alana das Chagas Ferreira Aguiar, Mayanna Karlla Lima Costa, Ênio Farias França e Silva

Motivational factors involved in development of dairy-based innovations

July 2016

Agricultural innovations are crucial for attainment of food security and poverty reduction; this fact is universally accepted. Farmers are not only recipients of introduced scientific technologies. It is a well known fact that agricultural innovations can emerge from multiple sources including farmers; in fact, farmers have been innovating long before the emergence of formal research and development. These innovations...

Author(s): Ram Datt, Sujeet K. Jha and Ata-Ul-Munim Tak

Nutrient intake, nitrogen balance and growth performance in buffalo calves fed citrus pulp as a concentrate source

July 2016

The study was planned to investigate the effects of dried citrus pulp on nutrient intake, digestibility, nitrogen balance, blood metabolites, growth performance and economics in Nilli Ravi buffalo calves. Twenty buffalo male calves of 18 to 24 months of age having 200 to 250 kg body weight were used in a randomized complete block design. Four iso-caloric and iso-nitrogenous diets containing 5, 10, 15 and 20% dried...

Author(s): Muhammad Zeeshan Javed, Muhammad Sharif, Shoukat Ali Bhatti, Muhammad Qamar Bilal, Fayyaz Ahmed, Fawwad Ahmad, Muhammad Saif-ur-Rehman and Muhammad Tariq

Genetic divergence of colored cotton based on inter-simple sequence repeat (ISSR) markers

July 2016

The management of colored cotton is an agricultural activity widely adopted by farmers located at Brazilian semiarid region. The fiber colors currently available are still limited to green and shades of brown, however, there is possibility to broaden the variability for this trait by using accessions from Gossypium Brazilian bank in breeding programs. Therefore, it is necessary to know the genetic diversity of available...

Author(s): Geisenilma Maria Gonçalves da Rocha, José Jaime Vasconcelos Cavalcanti, Luiz Paulo de Carvalho, Roseane Cavalcanti dos Santos and Liziane Maria de Lima

Association of weather variables with yield and yield components of cotton (Gossypium hirsutun L.) at reproductive phenophase

July 2016

Growth and development of cotton is influenced by several environmental factors such as fertility and biology of soil, change in temperature, amount and distribution of rainfall and carbon dioxide concentration which are attributes of climate change. A field experiment was conducted to study the contribution of weather variables for the total variation in yield and yield components during reproductive phenophase of...

Author(s): Zenebe Mekonnen Adare, A. Srinivas, V. Praveen Rao, T. Ram Prakash and T. Ramesh Thatikunta

Hydro-physical properties and organic carbon of a yellow oxysol under different uses

July 2016

Intensive soil use without a management plan based on its structures and limitations is the main cause of soil erosion and degradation. The physical properties changes of a studied agricultural area are evaluated by comparing with an area that did not suffer any modification caused by human activities, which is considered the ideal soil condition. This research evaluated the alterations in the hydro-physical properties...

Author(s): Welldy Gonçalves Teixeira, Isabel Dayane de Sousa Queiroz, Risely Ferraz Almeida, Fernanda Pereira Martins, Joseph Elias Rodrigues Mikhael and Elias Nascentes Borges

Growth, yield and content of trace elements in coffee fruits grown in soils under successive application of sewage sludge

July 2016

Brazil seeks to optimize the use of fertilizers by taking advantage of agricultural residues. The sewage sludge is used as organic matter in various crops such as coffee. However, an experiment in lysimeter was performed seeking to assess the growth, yield and content of zinc, copper, nickel, cadmium, lead and chromium in coffee fruits grown on Dystrophic Red Yellow Latosol (dRYL), Dystropherric Red Latosol (dRL) and...

Author(s): Alisson Lucrecio da Costa, Gabriela Lúcia Pinheiro, Flávia Villela Soares, Carlos Alberto Silva and José Maria de Lima

Agronomic performance of common bean (Phaseolus vulgaris L.) according to foliar application of potassium silicate in two sowing times

July 2016

Common bean (Phaseolus vulgaris L.) cultivation is of relevant economic importance for Brazil, since this legume is one of the main Brazilian staple foods. The objective of this study was to evaluate, in two sowing times, the agronomic performance of two bean cultivars according to foliar application of different doses of potassium silicate. Experiments were conducted under field conditions, in the rural area of the...

Author(s): André Luiz Alves, Antonio Carlos Torres da Costa, José Barbosa Duarte Júnior, Vanda Pietrowski and Marcos Cesar Mottin

Lignin content in seed coats of Glyphosate-resistant soybean and their respective parents

July 2016

The large-scale cultivation of Roundup Ready (RR) has recently increased among Brazilian farmers. However, few studies have compared the intrinsic characteristics of the seeds of RR soybean cultivars and their respective conventional parental. Thus, the purpose of this study is to verify if the genetic modification of the RR soybean affects the lignin content and its monomeric composition in the seed coats, in...

Author(s): Edicléia Aparecida Bonini, Patricia da costa Zonetti, Ana Paula Ferro, Osvaldo Ferrarese- Filho and Maria de Lourdes Lucio Ferrarese

Hydrology and water quality of a underground dam in a semiarid watershed

July 2016

In the Brazilian semiarid regions, underground dams can efficiently store water under possible scenarios of climate change. However, the annual humidity vector in these regions is vertical, and annual evapotranspiration exceeds annual rainfall, resulting in the accumulation of salts in groundwater reservoirs. This study investigated over the course of two agricultural years the hydrologic behavior, soil moisture and the...

Author(s): José R. B. Cantalice, Victor C. Piscoya, Vijay P. Singh, Yuri J. A. B. da Silva, Maria de F. C. Barros, Sergio M. S. Guerra and Moacyr C. Filho

Camu-Camu super fruit (Myrciaria dubia (H.B.K) Mc Vaugh) at different maturity stages

July 2016

Camu-camu (Myrciaria dubia) H.B.K.) Mc Vaugh) is a shrub native to the Amazon region and its fruits are promising sources of various bioactive compounds such as vitamin C, phenolic compounds and carotenoids. Camu-camu fruit is considered the greatest natural source of vitamin C worldwide and also good source of dietary fiber, potassium, iron, calcium, and various kinds of amino acids such as serine, valine and leucine....

Author(s): Jaime Paiva Lopes Aguiar and Francisca das Chagas do Amaral Souza

Biometric evaluation of monthly growth rate as a criterion to study the genetic diversity in Coffea canephora

July 2016

The variability of growth patterns and capacity to resist to environmental stresses that exists in populations of Coffea canephora Pierre ex Froehner makes it possible to select genotypes for different types of cultivation conditions. The objective of this study was to evaluate the monthly growth rate as a criterion to measure the genetic diversity of genotypes and to estimate the direct and indirect effects of the...

Author(s): Wagner Nunes Rodrigues, Tafarel Victor Colodetti, Lima Deleon Martins, Sebastião Vinícius Batista Brinate and Marcelo Antonio Tomaz

Contribution of previous legumes to soil fertility and millet yields in West African Sahel

July 2016

Studies on combined effects of 4 legume crops residues and rock phosphate application on pearl millet yield were undertaken on sandy acid soil field from 2012 to 2015 at ICRISAT Sahelian center (ISC)-Sadore, Niger. The objective of the experiment was to assess the best combination of legume species x rate of crop residue x rock phosphate doses that can sustainably improve pearl millet yield in cereal monoculture system...

Author(s): Gaston Sangare, Dahiratou Ibrahim Doka, Moussa Barrage and Dougbedji Fatondji

Emergence and early growth of baru seedlings on different substrates

July 2016

This study aimed to evaluate the effect of substrates in the emergence and early development of Baru seedlings. The experiment was performed in a greenhouse in a completely randomized design with five treatments (substrates) and four replications. The substrates were: S1) Oxisol; S2) Oxisol + washed sand (1: 1 v: v); S3) washed sand; S4)  Oxisol + washed sand + manure (1: 1: 1 v: v: v); S5) Oxisol + sand washed +...

Author(s): Alan Mario Zuffo, Joacir Mario Zuffo Júnior, Rezânio Martins Carvalho, Everton Vinicius Zambiazzi, Scheila Roberta Guilherme, Isabella Maria Monteiro Borges,  Flaviane de Oliveira Ribeiro, Adaniel Sousa dos Santos, Wéverson Lima Fonseca and Tiago de  Oliveira Sousa

Termiticidal activities of few plant extracts against Macrotermes subhyalinus smeathman and Trinervitermes geminatus wasmann (Isoptera: Termitidae) survival

July 2016

Termites are most pestiferous insects causing damage to crop and buildings. Their control still relies mainly on harmful chemical pesticides to the detriment of eco-friendly pesticides. The aim of this study was to evaluate the effect of three plant extracts on the survival rate of termite species, Macrotermes subhyalinus Smeathman and Trinervitermes geminatus Wasmann, known to cause damage to crops, vegetation and...

Author(s): Boris Dodji Kasseney, Wolali Seth Nyamador, Abla Déla Mondedji, Guillaume Koffivi Ketoh and Isabelle Adolé Glitho

Agronomic characteristics of corn in function of the application of K, S and Mo by foliar via with and without plaster in red Latosol

July 2016

The study aimed to verify the response of the application of foliar fertilizers based on potash, sulfur and molybdenum, with and without plaster in the soil, on the agronomic traits of corn crop. The experimental design was a randomized block in a factorial 5 x 2 with four replications. The sources of variation showed no significant effect. These results indicate that the plaster efficiency in the agronomic...

Author(s): Eloisa Lorenzetti, Juliano Tartaro, José Barbosa Duarte Junior, Elizana Lorenzetti Treib, Eliana Peliçon Pereira, Vanessa Faria de Oliveira, Jessica Caroline Coppo, Cristiani Belmonte, Maiara Luana Kuhn, Juliana Yuriko Habitzreuter Fujimoto

Impact of harvesting with burning and management of straw on the industrial quality and productivity of sugarcane

July 2016

Change from the traditional harvesting system with burns to mechanized harvesting of sugarcane, as well as the amount of straw needed to remain in the field for sustainability of the production system and how much could be removed for sectors such as energy cogeneration and bioethanol production, are not clarified issues. The objective of this study was to evaluate the impact of harvest management with burning...

Author(s): Gisele Silva de Aquino, Cristiane de Conti Medina, Ayres de Oliveira Menezes Junior, Amarildo Pasini, Osmar Rodrigues Brito, Ana Carolina Benitez Cunha, Jaime Higino dos Santos Júnior, Deise Akemi Omori Kussaba and Luis Fernando Almeida

Effects of ethylene on the postharvest quality of inflorescences of Oncidium varicosum ‘Samurai’

July 2016

Oncidium varicosum is an orchid largely distributed in South America, whose inflorescences with bright yellow flowers are of rare beauty. One of the objectives of the postharvest physiology of flowers is the study of the factors related with the quality loss of cut flowers. The ethylene performs a very important function on the senescence of flowers because it induces abscission of flowers buds and open flowers causing...

Author(s): Ariadne Kaleda Marino, Ana Carolina Corrêa Muniz, Kelly Magalhães Marques, Claudia Fabrino Machado Mattiuz and Ben-Hur Mattiuz

Growth of Cordia trichotoma seedlings in different sizes of recipients and doses of fertilizer

July 2016

This aim of this work was to evaluate the initial growth of Cordia trichotoma seedlings, submitted to different sizes of recipients and doses of controlled-release fertilizer (CRF). This experiment was performed in a greenhouse, and evaluation was done in factorial scheme using two volumes of recipients (110 and 180 cm3) combined with five doses of CRF (0 (controlled); 2.5; 5.0 and 7.5 g L-1 de substrate). The...

Author(s): Álvaro Luís Pasquetti Berghetti, Maristela Machado Araujo, Thaíse da Silva Tonetto, Suelen Carpenedo Aimi, Marcio Carlos Navroski, Felipe Turchetto and Thairini Claudino Zavistanovicz

Improving production of aromatic compounds by indigenous yeasts in Chenin Blanc grape must

July 2016

The aim of this study was to evaluate the effect of indigenous yeasts on the aroma of  fermented Chenin Blanc grape must by determining the volatile compounds, the odor activity value (OAV) and carrying out sensory analyses. The must, fermented by Hanseniaspora opuntiae/Saccharomyces cerevisiae combinations, presented higher concentrations of compounds such as ethyl acetate, ethyl hexanoate, 2-methyl-1-propanol and...

Author(s): Adriana Pereira Coelho Santos, Regina Vanderlinde, Bruna Aparecida Souza Machado and Maria Eugênia de Oliveira Mamede

Drippers used in vinasse application: Uniformity and obstruction

July 2016

In sugar cane crop fertigation management systems, about 500 m3 ha-1 of diluted vinasse is applied annually by cycle, promoting nutrient recycling and supply to the soil, especially that of potassium (K). With the increase of sugar cane areas with subsurface drip irrigation, hydraulic characterization related to vinasse intermittent application is important, in order to verify uniformity flow in drippers. The aim of...

Author(s): João Alberto Lelis Neto, Nelmicio Furtado da Silva, Marconi Batista Teixeira, Luiz Fabiano Palaretti, Pedro Henrique Pinto Ribeiro, Rubens Duarte Coelho and Jenifer Kelly Ferreira

Impact of climate change on the incidences of small ruminant diseases in a pastoral area of Kenya

July 2016

Participatory epidemiological methods were used to establish local perceptions and livestock owner’s knowledge, attitudes and practices (KAPs) of risk factors that impacts of climate variability and the seasonal variations in incidences of livestock diseases, disease vectors, intermediate hosts and rainfall in pastoral Rift valley of Kenya. The interaction of the molecular biology of the pathogen itself; vectors...

Author(s): B. Moenga, G. Muchemi, E. K. Kang’ethe, J. W. Kimenju, E. R. Mutiga and G. O. Matete

An alternative to complete banana mat uprooting: Assessing the effectiveness of continuous cutting at soil level of all shoots in a mat on speed for corm decay

July 2016

The complete uprooting of diseased mats/fields (CMU) is one of the recommended control options for Xanthomonas wilt of banana. CMU is labour intensive, time consuming and disturbs the soil structure, exposing fields to erosion. CMU often involves exportation of whole plant biomass, affecting soil fertility. The potential of continuous cutting at soil level of all shoots in a mat until complete corm decay in situ as an...

Author(s): Jules Ntamwira, Muller Kamira, Walter Ocimati, Mariam Bumba and Guy Blomme

The effects of crop rotation systems on maize agronomic traits under no-tillage in optimal and dry cropping seasons

July 2016

The purpose of this research was to evaluate the crop rotations effects on agronomic traits of maize cultivated in spring-summer in optimal (OCS) and dry cropping seasons (DCS). The experimental design was set up in a randomized complete block and the treatments were arranged in a factorial (8 x 2), consisting of 8 crop rotation systems and two cropping seasons (OCS and DCS), with four replications. The following...

Author(s): Luiz Carlos Ferreira de Souza, Mirianny Elena Freitas, Elaine  Reis Pinheiro Lourente, Ademar Pereira Serra, Jerusa Rech, Fagner Frota and Guilherme Eduardo Schwengber Loureiro

Chemical attributes of the soil in agroforestry systems subjected to organic fertilizations

July 2016

The reuse of organic byproducts in agroforestry systems is a sustainable proposal, since, in addition to preserving the natural resources, it has allowed the fertilization of the soils, obtaining a reduction of costs with mineral fertilizers. Therefore, the objective of this research was to evaluate the chemical attributes of the soil after two years of successive fertilizations using cattle manure and sewage sludge in...

Author(s): Sandro Alex Helrigle Abreu, Everton Martins Arruda, Leonardo Rodrigues Barros, Risely Ferraz de Almeida, Deyvid Diego Carvalho Maranhão, Vanderli Luciano da Silva, Carlos de Melo e Silva Neto, Rilner Alves Flores, Francine Neves Calil and Leonardo Santos Collier

A case study on compensatory growth of emaciated cattle fed on total mixed ration

July 2016

A study was conducted in Thailand with the aim of evaluating compensatory growth of emaciated cattle fed on ad libitum total mixed rations (TMR) under smallholder feedlot management. Two farms were identified where 121 cattle of various degrees of emaciation were bought for fattening trial. Cattle were grouped according to the degree of emaciation within respective pens and were fed on same type of feed throughout the...

Author(s): Dickson Adrian Mangadzuwa, Jamroen Thiengtham and Somkiert Prasanpanich

Harvest time, stem and grain sensibility of maize hybrids with contrasting growth cycles

July 2016

The delay of maize harvest may affect the stem and grain sanity. This work was carried out aiming to evaluate the effects of harvest time on the incidence of stem rots and rotten grains of maize hybrids with contrasting growth cycles. The experiment was set in Lages, SC, during the 2012/2013 and 2013/2014 growing seasons. A randomized block design, disposed in split plots was used. Five single-cross hybrids were tested...

Author(s): Fernando Panison, Luís Sangoi, Ricardo Trezzi Casa and Murilo Miguel Durli

Interaction of genotype, environment and processing in the chemical composition expression and sensorial quality of Arabica coffee

July 2016

The present study was carried out to analyze chemical descriptors present in the raw coffee bean and to establish an association of these descriptors with the sensorial quality of the coffee beverage, based on expressions resulting from the interactions of coffee genotype, environment, and processing. The chemical descriptors caffeine, trigonelline, sucrose, and isomers of chlorogenic acid (3-CQA, 4-CQA, and...

Author(s): Diego Egidio Ribeiro, Flavio Meira Borem, Marcelo Angelo Cirillo, Mariele Vilela Bernardes Prado, Vany Perpetua Ferraz, Helena Maria Ramos Alves and Jose Henrique da Silva Taveira

Irrigation depths in sugarcane crop with drip irrigation system

July 2016

This study aims to evaluate the growth and development of sugarcane under different supplemental irrigation depths. Irrigation treatments were 0.30, 0.60, 0.90 and 1.2 rate of crop evapotranspiration (ETc) and the control (no irrigation). The experimental design was a randomized complete block with six replications. The highest yield was ratoon cane with 190 t ha-1 in the treatment 0.6 of ETc. The difference between the...

Author(s): Helena Maria Camilo de Moraes Nogueira, Marcia Xavier Peiter, Adroaldo Dias Robaina, Richard Alberto Rodríguez Padrón, Cicero Urbanetto Nogueira and Marcos Vinicius Loregian

Growth, chlorophyll index and production of common and cowpea beans using different fertilizations

June 2016

Beans are a the major component in the Brazilian diet population, mainly in the northeast of Brazil, though yield is considered low due to the low technological content that is conducted in most producing regions, making it necessary for fertilizations to increase this feature. Considering the above, this study aimed to evaluate growth, chlorophyll index and the production of cowpea bean and common bean under different...

Author(s): Adailza Guilherme Cavalcante, Alian Cássio Pereira Cavalcante, Raunira da Costa Araújo, Murielle Magda Medeiros Dantas, Maria José Ramos da Silva, Bruno Ferreira Matos, José Flávio Cardoso Zuza and Everton de Oliveira Teixeira

Development and parasitism of Encarsia hispida (Hymenoptera: Aphelinidae) on Bemisia tabaci biotype B in cotton

June 2016

The biological control of pests is essential for the use of Integrated Pest Management in agricultural environments. In this context, the objective of this study was to identify biological parameters and quantify the parasitism index of Encarsia hispida on Bemisia tabaci biotype B nymphs in cotton plants. The research was conducted at the Entomology Laboratory of the Federal University of Paraíba, in Areia,...

Author(s): Robério de Oliveira, Gemerson Machado Oliveira, Mileny dos Santos de Souza, Matheus Andrade Borba, Jhony Vendruscolo, Gilmar da Silva Nunes, Izabela Nunes Nascimento and Jacinto de Luna Batista

Screening melon genotypes for resistance to Meloidogyne enterolobii

June 2016

Melon (Cucumis melo L.) is a cucurbitaceous of great appreciation worldwide. The intensive cultivation of melons has favored the increase of plant health problems in several producing regions. Among these problems, the root-knot nematode (Meloidogyne spp.) stands out. The development of genetically resistant cultivars is consolidated as an effective strategy for the management of these pathogens, it is then essential to...

Author(s): Guilherme Matos Martins Diniz, Willame dos Santos Candido, Edgard Henrique Costa Silva, Marcus Vinícius Marin, Carolina Andrade Franco, Leila Trevisan Braz and Pedro Luiz Martins Soares

Potential use of herbicides in different sorghum hybrids

June 2016

The sorghum crop in Brazil has expanded substantially. Among the factors that interfere in sorghum yield is the interference imposed by the presence of weeds. The objective of this study was to assess the potential of different herbicide treatments applied in pre-emergence or post-emergence of sorghum in terms of selectivity and weed control. Two experiments were conducted, one for each application modality:...

Author(s): Hudson Kagueyama Takano, Rogerio Da Silva Rubin, Luiz Henrique Marques, Sérgio Mateus Tronquini, Dauri Aparecido Fadin, Augusto Kalsing, Rodrigo Neves and Osmério Pupim Júnior

Gas exchange, growth and yield of cowpea genotypes under different irrigation strategies

June 2016

Water availability is a major limiting factor for cowpea bean crops, especially in semiarid regions, where it is necessary to adopt more productive and tolerant genotypes and efficient strategies for water use. Thus, an experiment was carried under field conditions in the semiarid region of Pombal city, PB, Brazil. Using a completely randomised blocks design experiment and four replications, in a factorial scheme. The...

Author(s): Rômulo Carantino Lucena Moreira, Marcos Eric Barbosa Brito, Roberto Cleiton Fernandes de Queiroga, Luciano Jonatas Gomes Frade, Franciscleudo Bezerra da Costa, Francisco Hevilásio Freire Pereira, Luderlândio de Andrade Silva and Carlos Jardel Andrade Oliveira

New substrates for the cultivation of Pleurotus ostreatus using exhausted compost

June 2016

Several materials have been used in the cultivation of the edible mushroom Pleurotus ostreatus. However, little is known about the reuse of the exhausted compost. This study evaluated the utilization of used substrates. Four formulations of composts were evaluated: C1 with no exhausted compost, and C2, C3 and C4 with 26, 45 and 64% of exhausted compost, respectively. Loss of organic matter, biological efficiency and...

Author(s): Otavio Augusto Pessotto Alves Siqueira, André Ricardo Zanon, Olívia Gomes Martins and Meire Cristina Nogueira De Andrade

Seedling of development and tolerance of eggplant cultivars under saline stress

June 2016

This study aimed to evaluate the initial growth and tolerance of eggplant cultivars under saline water irrigation. The experiment was carried out in protected environment (greenhouse) at the Federal University of Campina Grande - UFCG, located in the municipality of Pombal-PB, Brazil. The experiment was set in a completely randomized design, in a 2 × 5 factorial scheme, corresponding to two eggplant cultivars (C1...

Author(s): Fernando Sarmento de Oliveira, Francisco Vanies da Silva Sá, Lauter Silva Souto, Emanoela Pereira de Paiva, Fernanda Andrade de Oliveira, Erbia Bressia Gonçalves de  Araújo, Hélio Tavares de Oliveira Neto and Evandro Franklin de Mesquita

Evaluation of the nutritional value of soaked-boiled-fermented Java plum (Syzygium cumini) seed meal for poultry

June 2016

Chemical analysis, apparent metabolizable energy (MEn), and one feeding trial were conducted to evaluate the nutritional value of Java plum seeds (JPS) that had been subjected to a combination of soaking, boiling, and fermentation (SBF). Five broiler starter diets were formulated with the processed Java plum seed meal (JPSM) comprising 0, 80, 160, 240, and 320 g/kg of the diet. The JPS before and after processing...

Author(s): E. K. Ndyomugyenyi, M. W. Okot and D. Mutetikka

Current status of fodder production, conservation and marketing in the arid and semi-arid lands of Tharaka Nithi County, Kenya

June 2016

The purpose of the survey was to document the current status of fodder production, conservation and marketing in the arid and semi-arid land (ASAL) Divisions of Tharaka Nithi County, Kenya. The survey covered specifically Nkondi, Igambang’ombe and Tharaka Central divisions. A sample of 74 livestock farmers selected through stratified random sampling was engaged in the study. The study adopted a descriptive...

Author(s): Levi Mugalavai Musalia, Gilbert Abura Odilla, Onesmus Munene Nderi and Viona Muleke

Phenotypic profiles of different accessions of sweet potato (Ipomoea batatas L. Lam) in the coastal savanna agro-ecological zone of Ghana

June 2016

Twenty accessions of sweet potato (Ipomoea batatas L. Lam) cultivated under rain-fed conditions were evaluated based on their agromorphological traits to assess diversity in yield, morphology and other key agronomic characteristics of the accessions under study. The accessions consisted of 13 local and 7 exotic breeding lines grown in the research farm of the Biotechnology and Nuclear Agriculture Research Institute...

Author(s): Amoatey H. M., Sossah F. L., Ahiakpa J. K., Quartey E. K., Appiah A. S. and Segbefia M. M.

Path analysis for yield traits in F2 generation and molecular approaches for breeding rice tolerant to drought and submergence

June 2016

Drought and submergence are the two major limiting factors that reduce rice production. In this study, the relevance of yield traits through path analysis under drought and submergence conditions to improve grain yield of rice, from dry season 2014-2015 and genotypic analysis using SSR markers was evaluated, during 2015-2016. Path analysis indicated that the number of panicles/clusters had the highest and a direct...

Author(s): Ha Thi Thu Pham, Khang Tan Do, Minh Ngoc Truong, Xuan Dang Tran, Lang Thi Nguyen and Buu Chi Bui

Impact of natural toxin spinetoram 12 SC w/v (11.7 w/w) against Trichogramma chilonis Ishii and Chrysoperla zastrowi sillemi (Esben - Petersen) under laboratory conditions

June 2016

Insecticides are unavoidable in pest management programs especially when the pest crosses Economic Threshold Level (ETL). Nevertheless, often the plant protection products kill the natural enemy population making the pest to resurge and thus demanding more sprays. Therefore, insecticides used in integrated pest management (IPM) programs should be selective enough to spare the beneficial. Laboratory experiments were...

Author(s): M. Visnupriya and N. Muthukrishnan

Chemical properties and fermentation behavior of the composts prepared by three composting methods in Malawi

June 2016

Soil fertility improvement is one of the urgent issues in Malawi. Since composting by locally available materials is needed for this purpose, the composts were prepared from maize stalk and cattle dung by using three common methods in Malawi. The composts had high alkalinity and relatively high NO3- and K contents. N% of composts was determined from the composition of maize stalk and cattle dung, and is expressed by the...

Author(s): Naohiro Matsui, Koji Nakata, Chisambi Cornelius and Moyo Macdonald

Agricultural impact on environment and counter measures in Rwanda

June 2016

Rapid intensive agriculture often generates serious environmental concerns including soil erosion, water pollution and greenhouses gases. This paper assesses the impact of agriculture and its practices on environment in Rwanda from 1990 to 2012. Data provided by the World Bank were analyzed with Origin Pro 9 for statistical analysis. Also, a review on physical-chemical parameters and heavy metals of water resources home...

Author(s): Lamek Nahayo, , , Lanhai Li, Alphonse Kayiranga, , , Fidele Karamage, , , Christophe Mupenzi, , , Felix Ndayisaba, , and Enan Muhire Nyesheja, ,

The mechanism of seedlessness in watermelon generated using soft-X-ray irradiated pollen

June 2016

A new variety of seedless watermelon, with high sugar content, good taste, and easy storage has been developed using scanning electron microscopy (SEM) fluorescence staining, paraffin and 4',6-diamidino-2-phenylindole (DAPI) staining. The study investigated the mechanism behind the production of seedless watermelon after soft X-ray irradiation. The results showed that soft X-ray irradiation did not damage the...

Author(s): Hai-yong Qu, Chaoyang Zhang and Yudong Sun

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