نتایج جستجو برای: cropped ratio
تعداد نتایج: 503350 فیلتر نتایج به سال:
The significance of N2O emission from soils cropped with sugarcane was measured at Réduit and Belle Rive. The data demonstrated that N20 emissions from soils receiving 140 Kg N ha-1 was not markedly enhanced with regard to the background level emission from unfertilised soils.
Fatty acid methyl esters (FAMEs) were used to `®ngerprint' soil microbial communities that evolved during 25 years of wheat-fallow cropping following native mixed prairie sod at Sidney, Nebraska, USA. Total ester-linked FAMEs (EL-FAMEs) and phospholipid-linked FAMEs (PL-FAMEs) were compared for their ability to discriminate between plots remaining in sod and those cropped to wheat or left fallo...
In the Rio Grande Valley of Texas (RGV), values of maize and cottonseed crops are significantly reduced by aflatoxin contamination. Aflatoxin contamination of susceptible crops is the product of communities of aflatoxin producers and the average aflatoxin-producing potentials of these communities influence aflatoxin contamination risk. Cropping pattern influences community composition and, ther...
A field study was conducted to determine the fate of atrazine (6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine) within the root zone (0 to 90 cm) of a sandy soil cropped with sorghum [Sorghum bicolor (L.) Moench] in Gainesville, Florida. Atrazine was uniformly applied at a rate of 1.12 kg ai. ha(-1) to a sorghum crop under moderate irrigation, optimum irrigation, and no irrigation (ra...
Sensors are rapidly following computing devices in popularity and widespread use; and as a result, protocols to interface, record and process sensor data have cropped up anywhere. This position paper lists some of the ‘lessons learned’ in the creation and application of sets of embedded sensor data, specifically used as tools in building context aware services where sensor values get classified...
Nitrogen fertilization and planting density are two key factors that influence the yield of rice. Reducing nitrogen fertilizer input increasing will help to improve use efficiency stabilize yield. Field 15N tracer method in plot experiments were conducted study trends yield, (NUE) transfer hybrid rice conventional under dense with a reduced rate (DPRN) sparse high (SPHN). Among plants, proporti...
Agricultural development has been a major concern to most developing countries within the last two decades. It represents a cluster of six related but separate concepts; agricultural expansion; increased production per acre of cropped land or per head of livestock; agricultural growth; a situation characterized with agricultural products per agricultural worker, rising income per person employe...
The growth of automatic layout capabilities for publications such as photo books and image sharing websites enables consumers to create personalized presentations without much experience or the use of professional page design software. Automated color correction of images has been well studied over the years, but the methodology for determining how to correct images has almost exclusively consi...
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