October 2015
Issues and constraints for emerging farmers in the Eastern Cape Province, South Africa
The aim of the study was to investigate the main limiting factors that prevent emerging farmers from progressing from subsistence to commercial agricultural farming in the Eastern Cape Province. The study was conducted in the King William’s Town area by means of a structured questionnaire survey. A sample of 50 households was drawn from the research area which was chosen owing to its uniqueness with regard to...
October 2015
Postharvest fruit quality of new papaya tree hybrids produced in semiarid region
This work aimed to evaluate the new postharvest quality of papaya tree hybrids grown in a region of semi-arid climate, aiming to find the most suitable for marketing as new cultivars. It was conducted in a commercial farm in the municipality of Mossoró-RN, an experiment in a randomized block design with 14 treatments (12 hybrids in testing, plus two more cultivars already marketed, Tainung No. 1 and...
October 2015
Enhancing dissemination of Beauveria bassiana with host plant base incision trapfor the management of the banana weevil Cosmopolites sordidus
The banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) is an important pest of highland banana in East and central Africa. It causes yield loss of up to 100% in heavily infested fields. Studies were carried out in Uganda to evaluate the efficacy of the the plant base incision trap in attracting C. sordidus and to determine the potential of using the trap in enhancing dissemination of the...
October 2015
Medium-term conservation and regrowth of the tropical multipurpose species Genipa americana
The Genipa americana L., a fruit-producing species found in several countries and commonly found in the Brazilian Northeast, is very important economically, both for its wood and as a source of food and dye. This study evaluate the effects of abscisic acid (ABA) and the concentrations of salt and sugar in MS medium on reducing Genipa americana L. growth for in vitro conservation, as well as the effects of...
October 2015
Residuality of exogenous salicylic acid and effect on catalase activity and total antioxidant capacity in tomato leaves
Salicylic acid (SA) is used in agricultural practices because it induces stress tolerance. The goal of this study was to determine the SA concentration in leaves, the change in catalase (CAT) activity and the change in total antioxidant capacity (TAC) that result from the exogenous application of SA (10-4 M) to tomato leaves every 15 days in a greenhouse with and without NaCl application. Fruit yield was also verified....
October 2015
Adaptability and stability of cowpea genotypes to Brazilian Midwest
This study aimed to evaluate cowpea genotypes for adaptability and stability of grain yield using different methods, in order to support the launch and/or cultivars recommendation for agribusiness in the Brazilian Midwest. Trials were conducted from 2010 to 2012 in four locations, totaling eight environments. We evaluated 20 cowpea genotypes arranged in a randomized block design with four replications. Studies of...
October 2015
Effects of alternative extracts in the agronomic performance of two soybean cultivars
The soybean cultivation along the years has required big investments and high technological level to develop new and more productive cultivars. However, the advent of biotic stress, such as diseases, can lead to losses in yield. To attenuate this interference and obtain the expected yield, chemical products have been used to control these diseases. This technique has shown good efficiency in short-term, but can damage...
October 2015
Sunflower behavior of on soils with water availability and addition of cattle biofertilizer
The Sunflower plant is an oilseed of great importance on the world stage. However, their productivity may be compromised by lack of rain and availability of nutrients. Thus this study aimed to evaluate the growth of sunflower plants under different hydric regimes in two soils with the application of cattle biofertilizer. The experiment was performed in a greenhouse State University of Paraíba campus IV in...
October 2015
Temporal variation in weed occurrence and biomass under conservation agriculture and conventional farming practices
Conservation agriculture (CA) is advocated as a management system for sustainable productivity, while preserving the environment simultaneously. CA has many advantages, but weed management is regarded as one of its biggest challenges. This study reports on the temporal variation in weed occurrence and biomass under conservation and conventional farming practices. The treatment design was a split-split plot, with a...
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