African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6191

AJAR Articles

May 2018

Use of biochar for increased crop yields and reduced climate change impacts from agricultural ecosystems: “Chinese farmers’ perception and adoption strategy”

Biochar is a carbon-rich product from pyrolysis of biomass at relatively low temperatures in a closed system with limited oxygen. The product has been shown to have economic and environmental benefits, ranging from improved soil moisture retention for carbon sequestration, reduced pollution and dependence on inorganic fertilizers. Additionally, biochar can be produced on-farm by small scale farmers using locally made...

Author(s): Grace Wanjiru Kibue

May 2018

Determinants of mobile phones usage in sweet potato vine business in Gulu district northern Uganda

Seed systems that provide farmers with planting materials may be divided into formal and informal systems. For the sweet potato sector, the informal seed system is the main provider of planting materials to small and medium sized farmers in developing countries. This informal system provides planting materials to smallholder farmers at the right time, place and quantity. However, for it to be effective there must be an...

Author(s): Ronald Obong, Basil Mugonola and David Paul Phillips  

May 2018

Effects of biochar and gypsum soil amendments on groundnut (Arachis hypogaea L.) dry matter yield and selected soil properties under water stress

The effects of amending soil with gypsum and biochar on groundnut chlorophyll concentration, water use efficiency (WUE), biomass yield and selected soil properties were investigated under water stress. Gypsum (CaSO4.2H2O) was applied at 0 and 200 kg/ha, groundnut shell biochar at 1, 2 and 4% w/w of soil, and water at 100, 70 and 40% of daily plant water requirement (PWR) as main, sub and sub-sub plots, respectively, in...

Author(s): Munsanda Ngulube, Alice Mutiti Mweetwa, Elijah Phiri, Samuel Christopher Muriu Njoroge, Hendrix Chalwe, Victor Shitumbanuma and Rick Lynn Brandenburg

May 2018

Use of organic alternatives in the production system of habanero pepper (Capsicum chinense Jacq.) under greenhouse conditions

Cultivation of pepper has become the fastest growing practice in recent years, and specifically, habanero pepper which has surpassed its traditional area of ​​cultivation, and has expanded to other areas, conquering the markets of the rest of the country and the world. In the present study, 3 doses of solarized manure (40, 60 and 80 t ha-¹) and an absolute control were evaluated for the production of habanero...

Author(s): Pedro Vázquez Vázquez and Merle C. Navarro Cortez

May 2018

Comparative microscopic observations of arbuscular mycorrhizal fungi after colonization of five Tunisian olive cultivars

Arbuscular Mycorrhizal Fungi (AMFs) are known as a symbiotic microorganism which ameliorates growth and tolerance against stressful conditions of their host plants. It is characterized by morphological, physiological and biochemical events that are controlled by the interaction of both plants and fungus. The aim of this research was to evaluate the intensity (M%) and the Arbuscules abundance (A%) of mycorrhizal...

Author(s): Naouraz M’barki, Meriem Tekaya, Hechmi Chehab, Feten Aissaoui, Hanen Sfina, Zoubaier Mahjoub, Faouzi Attia, Dalenda Boujnah and Beligh Mechri,

May 2018

Maize response to doubled-up legumes, compost manure and inorganic fertiliser on smallholder farms in Ntcheu district of Malawi

A study was carried out in 2011/2012 and 2012/2013 growing seasons in Kandeu and Manjawira Extension Planning Areas (EPAs) in Ntcheu district, Central Malawi, to determine maize response to crop residue incorporation from legume cropping systems and compost manure. In 2011/2012 growing season, maize with or without compost manure, sole and intercropped legumes (pigeon pea, groundnut, soyabean and cowpea) were...

Author(s): Joseph Blackwell Kalasa, Wezi Grace Mhango, George Yobe Kanyama-Phiri and Max Williams Lowole

May 2018

Doses of cattle manure and levels of irrigation with wastewater in the cultivation of peppers

In areas with water scarcity, recycled water and cow manure in organic substrate makes the cultivation of peppers possible, supplying water and nutrition to pepper. The present research was conducted to evaluate the effect of cattle manure doses and levels of irrigation using wastewater on pepper cultivation (Capsicum frutescens L.). The treatments include: three replacement levels of wastewater treated, based on the...

Author(s): V. F. Silva, E. C. S. Nascimento, V. L. A. de Lima, C. V. C. Bezerra and L. O. Andrade  

May 2018

Nutritional and fermentative quality of sugarcane (Saccharum officinarum) top ensiled with or without urea and molasses

This study was conducted to evaluate the effect of urea and molasses addition on physical properties, pH, temperature, dry matter loss and chemical composition of sugarcane top (SCT) silage. Treatments were arranged as 2*4 factorial, with two SCT types (green and burnt) and four silage treatment types (without additive, 4% molasses, 1% urea and 1% urea + 4% molasses) in a completely randomized design. Forages were...

Author(s): Getahun Kebede, Ashenafi Mengistu, Getnet Assefa and Getachew Animut  

May 2018

Correlation of climatic factors between the development of tomato cultivars (Solanum lycopersicum L., Solanaceae) with adults of two key pests

The tomato (Solanum lycopersicum L., Solanaceae) is a crop has suffered from insect attacks and environmental factors. The objective of this work was to evaluate the correlations of climatic factors and two key pests at the development of cultivars. The study was conducted in Alagoas, Northeastern Brazil, monitored from September 2016 to August 2017. The experimental randomized with five treatments and twelve...

Author(s): Isabelle Cristina Santos Magalhães, Rubens Pessoa de Barros, Ligia Sampaio Reis, Jhonatan David Santos das Neves, Claudio Galdino da Silva, Diego Jorge da Silva, Alverlan da Silva Araujo, Adriely Vital de Souza, Aleyres Bispo Chagas, Tamara Taís dos Santos, Joice Kessia Barbosa dos Santos and Eliane dos Santos

May 2018

Cowpea nutrient responses for Malawi and Tanzania

Research was conducted in Malawi and Tanzania to determine cowpea (Vigna unguiculata L. Walp) grain yield responses to applied P and K, the agronomic and economic efficiency of nutrient application, and the importance of other nutrient deficiencies. Nine site-years of research were conducted. Cowpea did not respond to fertilizer P and K in Malawi. In Tanzania, the yield response to applied P was linear with 21 kg of...

Author(s): Moses W. Munthali, Catherine Senkoro, Patson Nalivata, Wilkson I. Makumba, Muhamad Mzimbiri and Charles Wortmann  

May 2018

Rainfed rice response to fertilizer in the Sudan Savanna of West Africa

In West Africa, rice (Oryza sativa L. and Oryza glaberrimaI Steud) production is not meeting current demand. Low yields are attributed to diverse biotic and abiotic constraints including nutrient deficiencies, inadequate agronomic practices, and socio-economic constraints. This study quantified yield and profit responses of rainfed rice produced in the Sudan Savanna of Burkina Faso and Mali to fertilizer N, P, K, and...

Author(s): Idriss Serme, Mohamed Dicko, Korodjouma Ouattara, Baba Sidibe and Charles Wortmann  

May 2018

On-farm irrigated maize production in the Somali Gu season

Domestic production satisfies less than half of Somalia’s cereal requirements. In this study, the Somali Agriculture Technical Group (SATG) evaluated different methods of nitrogen application (Broadcast, Hill, or Row) within an improved irrigated maize production system in Somalia’s Lower Shebelle riverine region. This improved system consisted of the best management practices (BMPs) recommended by SATG...

Author(s): Ryan Gavin, Hussein Haji, Nicolas Jelinski, Allison Harvey and Paul Porter

May 2018

Single nucleotide polymorphism (SNP)-based genetic diversity in a set of Burkina Faso cowpea germplasm

The potential of cowpea to address food security in Burkina Faso in particular is well established as it is a nutritious, cash and cover crop. However, there is limited information on existing germplasm diversity in Burkina Faso. This study was designed to gather some information on the genetic diversity in a set of cowpea lines introduced from different breeding programs. The diversity was therefore assessed using 181...

Author(s): Teyioué Benoit Joseph Batieno, Oumarou Souleymane, Jean-Baptiste, Tignegre, Bao-Lam, Huynh, Francis Kusi, S. Leandre Poda, Timothy J, Close, Philip, Roberts, Eric Danquah, Kwadwo Ofori and Tinga Jeremy, Ouedraogo

May 2018

Productivity of Irish potato varieties under increasing nitrogen fertilizer application rates in Eastern Rwanda

Irish potatoes are an important crop only promoted in cool and high moist conditions of Rwanda. This study explored the productivity of Irish potatoes varieties under increasing nitrogen fertilizer applications in drier agro-climatic conditions of the eastern Rwanda. Potato seeds mass-selected from locally-grown varieties in the region surrounding Kibungo town (-2.160897°, 30.543591°) were planted under rain-fed...

Author(s): Karemangingo C. and Bugenimana D. E.

May 2018

Nutritional quality of tomatoes as a function of nitrogen sources and doses

Vegetable consumers are increasingly demanding high quality products. Among factors that can influence the nutritional quality of tomato fruits, mineral nutrition stands out. The objective of this study was to evaluate the effect of nitrogen sources and doses on the nutritional quality of tomato fruits. The experiment was carried out in pots in an experimental area at the Universidade Federal de Viçosa -...

Author(s): Natália Silva Assunção, Maria Elisa de Sena Fernandes, Leonardo Angelo Aquino, Flávio Lemes Fernandes and Natalia Oliveira Silva

May 2018

Agro morphological characterization of taro (Colocasia esculenta) and yautia (Xanthosoma mafaffa) in Togo, West Africa

Taro and yautia are two edible aroids grown in the humid tropics of Asia, Africa and Latin America and used as staple food crops by millions of people in developing countries. They are mainly propagated vegetatively. Selection and improvement of these crops require characterization using desirable morphological traits for various end-uses. An agro morphological characterization study was conducted at the experimental...

Author(s): Damigou BAMMITE, Peter J. MATTHEWS, Dodzi Y. DAGNON, Akouèthê AGBOGAN, Komi ODAH, Alexandre DANSI and Koffi TOZO

May 2018

Evaluation of some Musa accessions in field collection at Ebonyi State University, Abakaliki, Nigeria

The study was conducted to characterize and evaluate the agronomic potentials of eight Musa accessions in Ebonyi State University Musa field genebank. Qualitative descriptors were used to characterize the genotypes, while eight growth and yield traits were evaluated. Results indicated that the accessions were similar in thirteen characteristics, but differed in nine traits including pseudostem/foliage pigmentation,...

Author(s): Oselebe H. O., Ngwu C. and Nnamani C. V.  

May 2018

Evaluation of cassava hybrids performance obtained by controlled pollination of elite accessions from Niari landscape in the Republic of Congo

Cassava is the main crop in the Congo but its low yield doesn’t meet the needs of Congolese populations. The low yield is due to the use of less effective sensitive varieties to diseases, non-mastering of techniques and biotic constraint of which the African cassava mosaic. This study aims at selecting resistant genotypes to the African cassava mosaic and assessing their agronomic and production performances. Six...

Author(s):  Kombo Guy Romain Aimé, Mpika Joseph, Mahungu Mzola Meso, Mikoko Nsika Elie, Mabanza Joseph and Attibayeba

May 2018

Productivity of radish fertilized with different doses of bovine manure

The application of organic matter to the soil has considerable benefits for agricultural land, including an improvement in the physical structure and fertility of the soil, which can often be extended from one crop to another. Animal manure is one of the most widely-used types of organic fertilizer, due in part to its availability. The present study investigated the productivity of radish exposed to different doses of...

Author(s): Ana Heloisa Maia, Manoel Euzébio de Souza, Flaviana Cavalcanti da Silva, Bianca Ferraz Rebelatto, Theylor Oliveira Silva, Victória Santos Souza and Laura dos Santos Ferreira

April 2018

Genotype by environment interaction (GxE) as a measure of yield stability of Dutch potato varieties in Uganda

Twenty one (21) Dutch potato varieties were introduced in Uganda during 2015-2016 seasons for national yield performance and adaptability studies so that most stable varieties could be identified for production.  The effect of genotype (G), environment (E) and their interaction (G x E) on tuber yield was assessed to establish variety adaptation in different agro ecologies. Five sites were used in the study that...

Author(s): Arinaitwe Abel Byarugaba, Mateeka Benon, Deo Tibanyedera and Alex Barekye

April 2018

Uncertainty, risk aversion, and management strategies – A case of cocoa farmers in Osun State Nigeria

Risk is a major issue that affects so many aspects of people’s livelihoods in the developing world. It is imminent in all management decisions of agricultural systems, as a result of fluctuations in price, yield and resource uncertainty. Hence, uncertainty, risk aversion and management strategies were investigated among the cocoa farmers in Osun State, Nigeria. Primary data employed in the study were obtained from...

Author(s): Agboola, Timothy Olusola, Balogun, Olubunmi Lawrence and Elugbaju, Dolapo Abigail  

April 2018

Response of groundnut (Arachis hypogaea L.) to plant growth promoting Rhizobacteria in degraded soils

The effects of plant growth promoting Rhizobacteria (PGPR) on the growth, plant nutrient content and crop yield of groundnut (Arachis Hypogaea L.) cv. Golden were investigated under rainfed conditions in degraded lands within 2011 and 2014. The experiment was planned with a randomized complete block design having three replication. The two PGPR treatments alone or in combination with FYM were tested and compared with...

Author(s): Rahina Kausar, Muhammad Iqbal Choudhary, Muhammad Imran Akram, Muhammad Rashid, Obaid Ur Rehman, Ayesha Malik,Muhammad Azeem Ur Rahman Khalid, Muhammad Zubair and Sarosh Alvi  

April 2018

The permanence in the plantation after harvest damages physical characteristics of Conilon coffee grains

The permanence of harvested fruits in the plantation can cause irreversible damage to Conilon coffee quality, possibly increasing the overall number of defects, causing losses to crop yield and changing the organoleptic properties of the product. The objective of this study was to quantify the changes caused by permanence time of the Conilon coffee in the plantation after harvest over the mass and classification of the...

Author(s): Abraão Carlos Verdin Filho, Paulo Sérgio Volpi, Tafarel Victor Colodetti, Wagner Nunes Rodrigues, Marcelo Antonio Tomaz, Lima Deleon Martins, Sebastião Vinícius Batista Brinate, Romário Gava Ferrão, Aymbiré Francisco Almeida da Fonseca, Maria Amélia Gava Ferrão, Marcone Comério and Saul de Andrade Júnior  

April 2018

Single-line automated sorter using mechatronics and machine vision system for Philippine table eggs

An automated single-line table egg sorting machine that integrates machine vision and mechatronics principles was developed in this study. The machine was fabricated using low cost and locally available materials. The developed machine was composed of the feeding unit, computing unit and the sorting unit. The conveyor was powered by a 12V DC geared motor, and the sorting arm was actuated by a DC servo motor which...

Author(s): Erwin P. Quilloy, Delfin C. Suministrado and Pepito M. Bato

April 2018

Performance of bread wheat genotypes under different environment in lowland irrigated areas of Afar Region, Ethiopia

Wheat is an important staple food for Ethiopian people, and its straw has been used as sources of feed for animals. Nine wheat genotypes introduced from International Center for Agricultural Research in the Dry Areas (ICARDA) were evaluated at Werer Agricultural Research Center from 2010/2011 to 2013/2014, at Gewane from 2011/2012 to 2012/2013 and at Waidulale in 2013/2014 cropping seasons using randomized complete...

Author(s): Mihratu Amanuel, Desta Gebre and Tolessa Debele

April 2018

Nutrient absorption march and accumulation of nutrients in developing Roxo de Valinhos fig (Ficus carica L.) tree, cultivated under different water regimes

The nutrient absorption march in fig (Ficus carica L.) trees and other fruit trees has been studied only at the seedling stage, and little is known about nutrient accumulation in perennial plants when the entire life cycle of the plant is considered. To this end, the present study aimed to evaluate nutrient accumulation in the Roxo de Valinhos fig tree, cultivated with and without supplemental irrigation. The split-plot...

Author(s): Manoel Euzébio de Souza, Sarita Leonel, Andréa Carvalho da Silva, Adilson Pacheco de Souza, Ana Heloisa Maia, Roberto Lyra Villas Boas and Adriana Aki Tanaka

April 2018

Nitrogen and phosphate fertilizers in elephant-grass for energy use

Nitrogen is the mineral element that plants most require. Its deficiency quickly inhibits plant growth. Excessive nitrogen fertilization raises the cost of biomass production. Therefore, there is a need to find the appropriate dose of nitrogen fertilizer that provides greater efficiency in dry matter production. The objective of this study was to evaluate the effects of nitrogen and phosphate fertilizers on the chemical...

Author(s): José Augusto de Almeida Sant&#;Ana, Rogério Figueiredo Daher, Niraldo José Ponciano, Marcia Maria Paes Santos, Alexandre Pio Viana, Erik da Silva Oliveira, Francisco José da Silva Ledo, Bruna Rafaela da Silva Menezes, Carlos Lacy Santos and Wallace Luís de Lima  

April 2018

Thermal comfort analysis of agricultural machinery operators with thermography

Heat stress appears as a strong candidate for physical wear and tear, leading to lower yields and high risks of accidents due to lack of attention. In this context, this work aims to study the possible influence of the internal temperature of metal roof tractor, skin temperature of face operator, relating it to possible physiological responses connected with environmental variables such as relative humidity air and wind...

Author(s): Murilo Mesquita Baesso, Vinicius Bertuga Do Amaral, Alcir José Modolo, Clovis Fischer, Emerson Trogello,  Jonathas Cassimiro Silvestrini, Raquel Couto Evangelista Baesso and Marco Aurélio Spoljaric Gonçalves  

April 2018

Towards being equal to them: Impact of organic certified production systems on women empowerment in agriculture

The objective of the study was to determine the degree of women empowerment in agriculture as well as examine the effect of organic certification and other socio-economic and cultural factors on women empowerment in agriculture in Kenya. This objective was achieved using data from peri-urban vegetable and rural honey producing households. It followed the innovative multidimensional measurement of women empowerment in...

Author(s): Oscar Ingasia Ayuya  

April 2018

Genotypic variability in some sun flower (Helianthus annuus L.) hybrids evaluated in Khordunia under rainfed conditions

Twenty locally generated hybrids of Sun flower (Helianthus annuus L.) hybrids were evaluated in two seasons (2012 and 2013) for yield and yield components at Khordunia area, Blue Nile State under rain fed conditions. A randomized complete block design with six replications was used for laying out the field experiments. The seeds were sown in the second and third week of July in the first and second seasons, respectively...

Author(s): Mohamed E. K. Fadlalla, Hashim A. Fadlalla, Abdelwahab H. Adbdalla and Murwan K. Sabahelkhair  

April 2018

Prospection and production of Solanaceae species resistant to the root knot nematode

Plant species of Solanaceae family are affected by numerous pathogens worldwide. Among them is the root-knot nematode which hinders the establishment of crops in the field, reducing their production capacity. This work aims to select Solanaceae species tolerant or resistant to root-knot nematode under the climatic conditions of Fortaleza, Ceará. Two experiments were performed. For both, the followings were...

Author(s): Janiquelle da Silva Rabelo, Marcelo de Almeida Guimarães, Carmen Dolores Gonzaga Santos, Benedito Pereira Lima Neto, Ana Régia Alves de Araújo Hendges, Caris dos Santos Viana, Jean Paulo de Jesus Tello and Hozano de Souza Lemos Neto

April 2018

Effects of market price, cultivating area and price regulation on cotton production in China

This study examines the quantitative effects of market price in cotton producing areas of China. It also analyzes the qualitative effects of price regulation on cotton production. Secondary time series data were collected from National Bureau of Statistics in China, between 1990 and 2013. Calculation of the growth rate of cotton in production was done using linear trend model and multi-regression model to analyze the...

Author(s): Mansoor Ahmed Koondhar#, Lingling Qiu#, Xingyue Liu, Fahmida Abbassi, Masroor Ali Koondhar and He Ge  

April 2018

Effect of calcium chloride dipping treatment on quality of Ziziphus spina-christi L. fruits during cold storage

Zizyphus spina-christi L. is one of the wide varieties of plant grown in Al-Ahsa Oasis in Saudi Arabia and known locally as Alnabaq (buckthorn). The objective of this investigation was to study the effects of postharvest calcium chloride applications on fruit quality of buckthorn under cold storage condition at 2°C and 90% RH for 5 weeks.¬¬ Fruits were dipped in calcium chloride at different concentrations...

Author(s): Mohamed S. AL-Saikhan  

April 2018

Saflufenacil and indaziflam herbicide effects on agricultural crops and microorganisms

The herbicides saflufenacil and indaziflam have recently been registered in Brazil for weed control in sugarcane crops; however, little information exists regarding their residual effects or influences on soil microorganisms. Therefore, the present study aimed: (a) to determine the effects of saflufenacil and indaziflam on soil microorganisms and (b) to evaluate the residual and dose effects of these herbicides on...

Author(s): Beatriz Alexandre Torres, Silvana Perissatto Meneghin, Nágilla Moraes Ribeiro, Paulo Henrique Vieira dos Santos, Bruna Ferrari Schedenffeldt, and Patricia Andrea Monquero  

April 2018

Integrated crop management (ICM) for increasing rice production in Barind area

An experiment was conducted at the Agronomy Field Laboratory, University of Rajshahi during the period from June, 2015 to December 2015 to study the effect of Integrated Crop Management (ICM) practice for increasing rice production in Barind area, Bangladesh. The experiment consisted of two factors that is, two variety which is BRRI dhan56 and BRRI dhan57, and five management practices like control, only weed...

Author(s): N. Khatun, M. A. Rahman and P. Devi

April 2018

Quality of Soil in the function of biological fertilization and plant covering

The yield of soybean was influenced by the chemical and microbiological properties of the soil, which was favored by management techniques that promote improvement in soil quality. The objective of this study was to evaluate soybean yield, chemical and microbiological quality of the soil as a function of biological fertilization and soil cover conditions. The experiment was conducted in both crops seasons 2015/16 and...

Author(s): João Paulo Ascari, Dejânia Vieira de Araújo, Inês Roeder Nogueira Mendes, Marcos Vinícius Foschiera, Rafael Sbruzzi Prieto, Wagner Henrique Moreira Barboza, Willian Krause and Leopoldo Sussumu Matsumoto

April 2018

A survey of the insect pests and farmers’ practices in the cropping of yellow pepper Capsicum annuum Linnaeus in Enugu State of Eastern Nigeria

Yellow pepper (Capsicum annuum L.) is the second market gardening crop after tomato, and subsequently, a major source of income to farmers in Nigeria. Pests and diseases reduce yields and quality of marketable fruits. A study was conducted in Ibagwa-Agu, Lejja, Edem, Alor-Uno and Eha-Alumona agro-based communities of Nsukka Local Government Area to assess the economic implications of insect infestation and control...

Author(s): Ekenma Julia Agwu, Gregory Ejikeme Odo, Felicia Ekeh, Gerald Nnadi Attamah, Michael Uwagbae and Chukwuemeka Eze

April 2018

Seed health tests of traditional leafy vegetables and pathogenicity in plants

Traditional leafy vegetables play a significant role in the daily diets of many people in Zimbabwe. They are produced by smallholder farmers with limited knowledge on the agronomic value of high-quality seed, on seed storage, and on plant- and seed-borne pathogens. The quality of the seed is rarely tested for seed-borne pathogens posing risks of pathogen build-up. This study was conducted in order to determine the...

Author(s): Praxedis Dube, Paul C. Struik and Elizabeth Ngadze

April 2018

Soybean development under soil water deficit

One of the main factors affecting soybean development is water deficiency, especially when it occurs during the flowering and pods filling stages. Thus, this study aimed to evaluate the soybean development under soil water deficit in different phenological phases, under soil and climatic conditions of Bom Jesus, Piaui State, Brazil. The test was conducted at São Luiz Farm, located 3 km from Bom Jesus  to...

Author(s): Marcelo Simeão, Aderson Soares de Andrade Junior, Everaldo Moreira da Silva, Aureliano de Albuquerque Ribeiro and Edson Alves Bastos

April 2018

Rice farmers’ perception of climate change and adaptation strategies in the Ketu North District, Volta Region of Ghana

This study assessed rice farmers’ perception of climate change and adaptation strategies in the Ketu North District, Volta Region of Ghana. Climate variables particularly precipitation and temperature were taken in the climate change perception study. Multistage sampling technique was used to select 340 rice farmers from six farming sections, and a structured questionnaire was used to elicit data from the...

Author(s): Jacob Binda Kolleh and Marcus Tobodawolo Jones

April 2018

Cropping systems and soil quality and fertility in south-central Uganda

Little is known about how cropping systems influence soil quality and fertility in Uganda. Some cropping systems are more valued and as a result are given more nutrients and planted in certain soils, all of which leads to varying soil quality and fertility. This study compared soil quality (soil pH, cation exchange capacity (CEC), electric conductivity (EC), total N, and depth to restrictive layer (DRL)) and fertility...

Author(s): Nataliya Apanovich, and Andrew W. Lenssen

April 2018

Bacaba-de-leque (Oenocarpus distichus): A new wet tropics’ nutritional source

The present study aims to determine the nutritional composition of soluble and insoluble fibers, vitamins and minerals in the fruit of bacaba-de-leque (Oenocarpus distichus Mart.) a native Central Amazonian tropical fruit. Results show the fiber contents to be 3.95 g 100 g-1, 100% of which shows to be insoluble fibers. Potassium stood out among the minerals, with 173.85 mg 100 g-1. High vitamin E concentration (6.65 mg...

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

April 2018

Physical, chemical, and microbiological evaluation of a compost conditioned with zeolites

Zeolites are minerals characterized by high cation exchange capacity (CEC). This study evaluated possible effects of zeolites on improving the composting process in terms of the physical, chemical, and microbiological quality of compost and the productivity of the test plant, Raphanus sativus L. Compost enriched with 1.5% ground zeolites exhibited 62% greater degradation of organic particles sized less than 0.125 mm and...

Author(s): Fabricio T. Ramos, Oscarlina L. S. Weber, Eduardo B. Morais, Eliana F. G. C. Dores, Zoraidy M. Lima and João M P Novais

April 2018

Socio-economic and environmental impacts of invasive plant species in selected districts of Bale Zone, Southeast Ethiopia

Understanding the socioeconomic and environmental impacts of invasive plant species from the affected communities’ perspectives is essential to design and plan sustainable control and prevention strategies. Hence, understanding the socio-economic and environmental impacts in the infested and susceptible areas such as Bale zone is very crucial. Therefore, the objective of this study was to assess socio-economic...

Author(s): Mohammed Mussa, Habtamu Teka and Ahimed Aliye

April 2018

Agricultural Knowledge and Technology Transfer Systems in the Southern Ethiopia

Agriculture is the mainstay of the Ethiopian economy. However, the growth of the sector is constrained by different factors. Low level of technology development, inefficient technology dissemination, low utilization of improved production inputs and shortage of research proven production practices are among the most important factors hindering the growth of the sector. The objective of this study was, therefore, to...

Author(s): Tewodros Ayalew and Tesfaye Abebe  

April 2018

Early prediction of internal bruising in potatoes by biospeckle laser technique

The internal bruising in potatoes is a kind of damage caused by the mechanical impact, which is the major cause of post-harvest losses. This kind of injury is hard to detect because it occurs due to the internal cellular rupture of the tuber. This research aims at evaluating the applicability of the biospeckle laser technique in order to detect and predict the internal bruising in potatoes caused by mechanical impacts...

Author(s): Anderson Gomide Costa, Roberto Alves Braga Jr., Eduardo V. B. Vilas Boas and Murilo Risso

April 2018

Influence of reducing sugar contents on sprout growth of blackberry cuttings

The objective of this study was to analyze the use of different doses of indolebutyric acid (IBA) and its influence on reducing sugar contents and the relationship of root and leaf development of mulberry cuttings, using commercial substrates and sand. The experimental design was a completely randomized design, with 3 replicates per plot and 5 cuttings per replicate, in a 3 × 3 factorial scheme, consisting of...

Author(s): Luiz Carlos Pereira, Henrique Menoncini, Fabiola Fernandes Abreu, João Victor de Souza Martins, Rodrigo Gonçalves Mateus, Marcos Barbosa-Ferreira, Cristiano Marcelo Espínola Carvalho, Ricardo Dias Peruca, Cleber Junior Jadoski and Denílson Guilherme

April 2018

Fungistatic activity of essential oil of Lippia sidoides Cham. against Curvularia lunata

Synthetic pesticides used in agriculture to control pathogens are being widely questioned for their harmful effects on human health and the environment. Therefore, the objective of this study was to evaluate the fungistatic activity of Lippia sidoides Cham. essential oil on alternative control of Curvularia lunata (Wakker), the causal agent of spot in maize plants. The fungitoxic contact effect was successful, resulting...

Author(s): Talita Pereira de Souza Ferreira, Dalmarcia de Souza Carlos Mourão, Gil Rodrigues dos Santos, Luiz Gustavo de Lima Guimarães, Ellen Caroline Feitoza Pires, Weder Ferreira Santos and Raimundo Wagner de Souza Aguiar

April 2018

Effects of mineral salts on forage seeds germination

The objective of this study was to evaluate seed germination of three different forage species subjected to saline stress. The seeds remained in salt for 0 to 24 h and were then deposited in field beds. After 15 days, the germination was evaluated from its emergence. The effect of NaCl on germination was evaluated for the following treatments: a) 0 h (control); b) permanence in NaCl for 6 h; c) permanence in NaCl for 12...

Author(s): Suzana Cristina Quintanilha, Erico da Silva Lima, Vanessa Aparecida Feijó de Souza, Tiago Neves Pereira Valente, Bruno Borges Deminicis, Andrea Roberto Bueno Ribeiro, Vitória Gallo Borges de Lima and Agatha Nara Pirondi

April 2018

Environmental conditions of the interior of the tropical forest and regeneration of tree species

This study aimed to analyze the interactions between environmental variables and the occurrence of tree species in the understory of an Atlantic forest fragment in Southeastern Brazil. The vegetation data collection was carried out in ten locations, with trees having diameter at breast height (DBH) larger than 5 cm and with distinct physiographic characteristics, orientation and slope. The following variables were...

Author(s): José Eduardo Macedo Pezzopane, Gilson Fernandes da Silva, Eduardo Alvarez Santos, Miguel Angel Herrera Machuca and Talita Miranda Teixeira Xavier

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