نتایج جستجو برای: agroclimatic zones
تعداد نتایج: 46373 فیلتر نتایج به سال:
Detailed parameter sensitivity, model validation, and regional calibration of the Hybrid-Maize crop model were undertaken for the purpose of regional agroclimatic assessments. The model was run at both field scale and county scale. The county-scale study was based on 30-yr daily weather data and corn yield data from the National Agricultural Statistics Service survey for 24 locations across the...
Given the geography and agroclimatic conditions of the Southeast, coupled with continued population expansion from in-migration, local foods markets may be a promising niche market for some farms in the region. The Southeast has more small farms than any other U.S. region. Using farm-level data, we address the question of how successful southeastern farms engaged in direct sales to consumers di...
Grasslands play a significant role in livestock fodder production and thus, contribute to food security worldwide while providing numerous additional ecosystem services. However, how agroclimatic conditions adverse weather events relevant for grasslands will change across the European grassland areas has not been examined date. Using single reference setup soil management over 476 sites defined...
Genetically modified, insect-resistant Bacillus thuringiensis (Bt) cotton is cultivated extensively in Pakistan. Past studies, however, have raised concerns about the prevalence of Bt cotton varieties possessing weak or nonperforming insect-resistance traits conferred by the cry gene. We examine this issue using data drawn from a representative sample of cotton-growing households that were surv...
The aphid, Myzus persicae is an important sucking pest and a virus vector in many crops. management of M. mainly through synthetic pesticides. development resistance against common pesticides has resulted control failures persicae. objective this study was to examine the status pesticide genetic structure populations. Samples were collected from cabbage cultivations dry (Anuradhapura), wet (Kan...
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