The performance of the Paci¢c white shrimp Litopenaeus vannamei (Boone) under various stocking strategies was evaluated in earthen ponds ¢lled with freshwater amended with major ions. Six 0.1-ha earthen ponds located in Pine Blu¡, AR, USA, were ¢lled with freshwater in 2003 and 2004, and potassium magnesium sulphate added to provide 50mgK L 1 and stock salt added to provide 0.5 g L 1 salinity. ...

The challenges of soil degradation and climate change have led to the emergence Conservation Agriculture (CA) as a sustainable alternative tillage-based agriculture systems. Despite recognition positive impacts on health, CA adoption in Africa has remained low. Previous health studies mainly focused ‘scientific’ measurements, without consideration local knowledge, which influences how farmers i...

Teosinte (Euchlaena mexicana L.) is a popular herbage crop in Nepal. Although farmers produce teosinte seeds, management for maximizing seed yield unknown. A study was undertaken to investigate order explore the production potential of yield. There were four different sowing dates (30 March, 30 April, May and June), rates (20, 40, 60 80 kgha?1) three cuttings (nil, once at 45 days after (DAS), ...

Field assessment of integrated management BT cotton pests was carried out in two consecutive seasons; 2016/2017 and 2017/2018 the experimental research farm Kassala University, Sudan. Four insecticides (imidacloprid, abamectin, profenofos, lufenuron) from different chemical groups with a mode action three levels (43.81 kgha-1, 87.62 131.43 kgha-1) soil-applied nitrogen were tested IPM package. ...

katoul is a new soybeam cultivar originated from a genotype named d.p.x.3589 imported from the united states of american in 1990. this genotype was examined together with other soybean genotypes and check cultivars in different preliminary and advanced yield traits in gorgan and other research stations during 1999-2002. the mean seed yield of d.p.x.3589 in all these experiments was 3333 kgha-1 ...

estimation of optimum fertilizer rates is needed because of growing economic and environmental concerns. optimum fertilizer rates can be determined by fitting statistical models to yield data collected from n fertilizer experiments. the main goal of this research was to compare and evaluate quadratic, square root, mitscherlich, rectangular hyperbola, linear plus plateau and quadratic plus plate...

in order to study the effects of different irrigation system and different amounts of nitrogen fertilizer on yield and quality of sugar beet, an experiment was conducted at ekbatan research station, hamedan during 2005-2006 as split plot based on randomized complete block design  with three replications. the main plots were irrigation systems (furrow, sprinkler and drip irrigation) and subplots...

The excessive use of fertilizer has resulted in serious environmental degradation and a high health cost China. Understanding the reasons for overuse is critical to sustainable development Chinese agriculture, large-scale operation considered as one measures deal with use. Under premise fully considering resource endowment heterogeneity farmers small-scale production management, different decis...