Abstract: The objective of this study was to evaluate the efficacy of the pesticides commonly used by farmers in controlling the Tobacco spider mite Tetranychus evansi Baker & Pritchard. Laboratory and greenhouse experiments were carried out to determine the susceptibility of T. evansi to dicofol, bifenthrin, propargite, lambda-cyhalothrin, dimethoate and profenofos+cypermethrin using the manufacturer’s recommended rates. Ovicidal and adulticidal (contact and residual) assays were done in ...
ABSTRACT Two experiments were carried out at two locations (Ellkandi and Essuki area) for two consecutive seasons 2013 and 2014, to estimate the genetic variability among 15 sunflower hybrids, characters correlations with seed yield (t/ha) and to determine the genotype x environment interaction as well as to evaluate the stability of performance for the hybrids at the four environments. A randomized complete block design with four replications was used at each environment and data on 11 ...
These studies were conducted in White Nile State on one of the important field pests of tomato, African bollworm Helicoverpa armigera Hubner. The studies included a field survey to determine the presence and distribution of African bollworm in the White Nile State and a laboratory studies to calculate morphmetrics measurement s of insect stages , to study some biological activities of the insect and to evaluate the efficacy of leaves and stem ethanol and aqueous extracts of Lantana c...
ABSTRACT Drought is the major abiotic factor limiting crop production worldwide. Sorghum is one of the most drought tolerant grain crops that have the ability of addressing food insecurity in semi-arid areas. However, it is exposed recurrently to severe forms of drought and therefore, requires improvement to cope with moisture stress. The present investigation was undertaken to improve local sorghum varieties for drought tolerance in Burkina Faso. A participatory Rural Appraisal was cond...