Weaned bison bull calves were randomly assigned to four feedlot diets in a 4 treatment by 4 periods Latin square study. The feeding periods were 80 days long during spring, summer, fall, and winter. The four dietary treatments were identified based on major ingredients in each ration: 1) wheat screenings, 2) wheat middlings, 3) crambe meal, and 4) a commercial bison ration. Winter gains were lo...

BACKGROUND There is limited evidence for an association between agricultural pesticide exposure and certain types of childhood cancers. Numerous studies have evaluated exposure to pesticides and childhood cancer and found positive associations. However, few studies have examined the density of agricultural land use as a surrogate for residential exposure to agricultural pesticides and results a...

using parametric approaches for qualitative assessment of land suitability is a useful method for diagnosis of land capability and potential in optimum crop production. by using such methods will hope that to achieve sustainability in based on fao land evaluation frame works and the presented tables of soil and climate requirements for agronomic crops. we studied qualitative land suitability fo...

ABSTRACT- Crop rotation has many benefits for agro-ecosystems production. In order to evaluate two current rotation systems of wheat (Triticum aestivum L.) production in Kamalabad region of Fasa, an experiment was conducted during 2015-2016 growing season. The rotation systems were fallow-wheat and cotton (Gossypium spp.)-wheat. Research plots were arranged as a randomized complete block design...

We used remote sensing imagery to characterize the hydrological dynamics of 8404 temporary freshwater wetlands (playas) in Texas (Landsat 5 TM WRS-2 P30/R36) from 2008 to 2011, comparing known wet and dry periods, and related these to land use within 100 m. Hydroperiods were highly variable, and peak water availability occurred in different seasons in different years, varying by as much as two ...

BACKGROUND In solid-state anaerobic digestion (AD) bioprocesses, hydrolytic and acidogenic microbial metabolisms have not yet been clarified. Since these stages are particularly important for the establishment of the biological reaction, better knowledge could optimize the process performances by process parameters adjustment. RESULTS This study demonstrated the effect of total solids (TS) co...

With the aim of the improvement water retention in dry land condition by green manure application, this study was carried out with or without rye green manure along with 4 nitrogen fertilization rate in green manure-wheat rotation system between 2001 – 2007 years. Results showed that the green manure application effects were significant on the soil aggregate stability, soil bulk density and ava...

Surface-level ozone pollution causes crop production loss by directly reducing healthy green leaf area available for carbon fixation. Ozone and its precursors also affect crop photosynthesis indirectly by decreasing solar irradiance. Pollutants are reported to have become even more severe in Eastern China over the last ten years. In this study, we investigated the effect of a combination of ele...

abstract the aim of this study was to assess the affects of agricultural extension programs on the promotion of the efficiency, knowledge and technical expertise of farmers. the study also aimed to analyze the factors affecting the acceptance of agricultural extension programs with regards to process of agricultural development. a survey consisting of 137 samples was conducted between wheat far...