Nitrogen Fertilizer Management for Improved Grain Quality and Yield in Winter Wheat in Oklahoma

Nutrient sources and harvesting frequency on quality biomass production of switchgrass ( Panicum virgatum L .) for biofuel

“…This might be attributed to higher soil organic matter and clay content of LCB that can hold more nutrients compared to Perkins (Table 2). Previous report indicated that winter wheat responded to nitrogen fertilizer application in the same site revealing the importance of nitrogen fertilization in the area [33]. This might illustrate that the nitrogen requirement of winter wheat and switchgrass is different.…”

Yield and nitrogen use efficiency of aromatic rice varieties in response to nitrogen fertilizer

“…The results of this study are similar to those of Ying et al (1998) who showed that rice yield increased with increasing nitrogen rate for high-yielding rice genotypes in tropical and subtropical environments. Real time and site specific N recommendations should be applied (Mohammed et al, 2013). In other words, there is an inter-seasonal variability in rice genotype yield response to nitrogen rate even in the same environment due to influence of climatic factors and management practices on this relationship.…”

Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

“…Controlled-release urea (CRU: Mikkelsen et al 1994;Shoji et al 2001) and split N applications (Mascagni and Sabbe 1991;Mohammed et al 2013) can also decrease leaching and increase NUE by lowering soil nitrate concentrations during vulnerable periods for leaching. Nitrate leaching effects of CRU and split applications have not been evaluated in the semiarid NGP, although Grant et al (2012) found that they produced inconsistent effects on NUE in a wetter portion of the NGP.…”