October 2016
A review of geographic information systems and digital imaging in plant pathology application
The increasing rate of disease incidence resulting from devastating effects of plant pathogens, limits crop productivity globally, thus affecting food security. The current global population growth with many mouths to feed is dependent on vibrant agricultural productivity. The effects of globalization, climate change, evolution of pathogens and vectors to mention a few, have combined to increase spread of invasive plant...
October 2016
Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions
Papaya (Carica papaya L.) has a great economic importance in tropical and subtropical countries, Brazil being one of the largest producers of papaya in the world. This crop requires a considerable amount of water during its cycle, making proper irrigation management essential for optimal water use. Improving water-use efficiency can increase levels of agricultural production as well as the efficient use of water...
October 2016
Multivariate analysis of the genetic divergence among populations of ornamental pepper (Capsicum annuum L.)
The genus Capsicum presents a wide genetic variability. The most common way to determine this variability has been based upon morphological descriptors. We studied the genetic divergence among populations of ornamental pepper (Capsicum annuum L.) using two different multivariate techniques: Cluster analysis and canonical discriminant variables. The analyses enabled us to determine the morphological descriptors that...
October 2016
Operating and energetic performance of the assembly tractor-scarifier in different liquid ballasting and working depths
The working depth and ballasting are factors that can influence directly the operational and energy performance of a mechanized set. The objective of this study was to evaluate the operational and energetic performance of the set tractor-scarifier, working at three depths under two ballasting conditions. The study was conducted in the experimental area of ​​mechanization of the Department of Agricultural Engineering...
October 2016
Exploitation of variability for salinity tolerance in maize hybrids (Zea mays L.) at early growth stage
Salinity is extremely serious problem that has a drastic effect on maize crop, environment and causes economic losses of country. An advance technique to overcome salinity is to develop salt tolerant genotypes which require screening of huge germplasm to start a breeding program. Therefore, present study was undertaken to screen out 25 maize hybrids of different origin for salinity tolerance at seedling stage under...
October 2016
Consequence of different ripeners on germination and initial growth of morning glory
At the application time of sugarcane ripeners, most times, morning glory plants, that have escaped, survived or emerged, are entwined on sugarcane stalks and these plants are at this time in different reproductive stages (and it becomes more difficult to control) causing a mechanical and crop yield damage. The main aim of this research was to evaluate sugarcane crop ripeners effect on the seeds germination, seedling...
October 2016
Phenotypic variability in Nigerian castor (Ricinus communis L.) accessions
Ten accessions of Ricinus communis L. were grown in derived savannah agro-ecological zone for two cropping seasons under rain fed conditions. The work aimed at phenotypic characterization of R. communis for different qualitative and quantitative traits. The field characterization of the genotypes was done using randomized complete block design with three replications at the new site of Botanical garden, University of...
October 2016
Treatment of bean seeds with plant extracts for controlling Zabrotes subfasciatus and its effects on physical and physiological quality during storage
Bean crop occupies a prominent place in medium and large farming units in Brazil. Most of the time, the success of this crop depends, among other factors, on the use of good quality seeds at sowing; which requires strict quality control, harvesting, and storage. The objective of this study is to evaluate the effect of leaves and shells extracts of Aspidosperma pyrifolium Mart., Anadenanthera colubrina and myrtle...
October 2016
Bioherbicide based on Diaporthe sp. secondary metabolites in the control of three tough weeds
Brazilian growers are facing difficulties to manage the weeds Lolium multiflorum, Conyza sp. and Echinochloa sp. using commercially available agrochemicals in most crops. This study aims to evaluate the use of a bioherbicide based on fermented broth containing secondary metabolites of Diaporthe sp. to control L. multiflorum, Conyza sp. and Echinochloa sp. The bioherbicide activity in pre-emergence and post-emergence of...
October 2016
Growth and production of a Japanese cucumber crop under pulse irrigation
Water is the most important production factor in agriculture, since even small restrictions to the water supply can result in decreased productivity. Due to climatic reasons, water supply is limited in many parts of the world, resulting in a need to develop techniques that increase the water use efficiency. Pulse irrigation consists of the application of an irrigation depth, relative to the actual irrigation needed,...
October 2016
Characterization of ‘Cabernet Sauvignon’ wine made with grapes from Campanha– RS Region
Campanha region in the state of Rio Grande do Sul (RS) has received attention on grape production specifically ‘Cabernet Sauvignon’, ‘Merlot’ and ‘Tannat’. Due to the edafoclimatic peculiarities such as sandy soil, good thermal amplitude and sunshine, and low rainfall during the ripening period, it is supposed that the wine of this micro-region, in especially Bagé, might have...
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