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1. Adjusting N Rate is the First Step in N Management IntensificationNitrogen (N) management and sowing date are among the leading causes for winter wheat (Triticum aestivum L.) yield gap in Kansas. This research aimed to compare the two most common cropping sequences in Kansas (continuous wheat [Ct-Wt] and double-cropping of winter wheat and soybean (Glycine max (L.) Merrill) [Wt-Sy]) under two N management (standard and progressive) on wheat production. Standard N management consisted of one single broadcast N application as UAN at 80 lbs ac-1 at... L. Simao, R. Lollato, D. Ruiz diaz |
2. Nitrogen and Sulfur Colimitation to Winter Wheat YieldSulfur has become more limiting for wheat production in the Great Plains, and its deficiency can interact with N availability. The current work reports on yield and yield gaps of three winter wheat varieties as affected by N and S fertilization using the concept of co-limitation (CNS). Field studies evaluating 0, 10, 20 and 40 lbs S/a combined factorials with 50, 100, and 150 lbs N/ac and three hard red winter wheat varieties were conducted in eight environments resulting from the... R. Lollato, B.R. Jaenich, N. Nelson, M. Guttieri, D. Ruiz diaz, V. Sadras |
3. Does Late-season Nitrogen Impact Grain Protein Concentration in Wheat? A Global Meta-analysisSustainable improvements in wheat production entails increasing yield while maintaining or improving grain quality, which most of the time are negatively correlated. However, attemps to synchronize N supply with crop N demand through N timing can help to obtain both improved yield and quality by enhancing N use efficiency (NUE) and reducing N losses. Late season applied N is a challenging practice that when used correctly can generate posite NUE impacts. Additionally, a systematic assessment... R. Lollato, N. Giordano |
4. Sheep Grazing Preference and Nutrient Cycling Implications Among Cover Crop SpeciesThe vast and interspersed livestock and crop industries of Texas lend opportunity for livestock integration to benefit regional agricultural systems. Texas leads sheep production in the U.S. and small ruminant integration in crop systems has become an appealing opportunity in recent years due to strong meat markets and generally poor commodity crop markets. Many winter cover crops are likely suitable forages, and challenges of nutrient immobilization could be (at least partially) mitigated by... R. Matschek, R. Noland, N. Nielson, J. Thorne, M. Mcculloch |