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1. Utilizing Long-term Organic Amendments to Improve Soil Health in Semi-arid, Grazed GrasslandsDetermining soil health changes associated with long-term land application of organic amendments, such as biosolids, is important for understanding and improving overall environmental health. In 1991, a single application of biosolids were surface applied (treatment rate: 0, 2.5, 5, 10, 21, or 30 Mg ha−1) to a semi-arid grazed grassland. In 2002, a repeated application of biosolids were surface applied at the same rate to ½ of all plots. In 2018, soil samples were obtained from 0-15... C. Buchanan, J. Ippolito |
2. Effect of Rate and Timing of Nitrogen Applications on Forage Sorghum Biomass YieldForage Sorghum (Sorghum-Sudan grass) is a forage crop harvested in the form of silage or dry-hay and is intended to distribute to livestock as feed. The research objective for this study is to observe how nitrogen timing plays a role in crop total biomass yield. Observations and data were collected during the 2021 growing season, with a total of two harvests allowed due to weather conditions in the area. This trial was conducted at two locations: Lake Carl Blackwell near Stillwater, Oklahoma and... B. Arnall, S. Sawatzky, S. Akin, M. Thomas, R. Singh, W.R. Raun |
3. Effect of Nitrogen Rate and Timing on Forage Sorghum Biomass Yield and QualityForage Sorghum is a summer annual sorghum-sudan hybrid that is a high yielding and high-quality source of feed for livestock. Forage sorghum can produce multiple biomass harvests in a single growing season, and is harvested in a silage or dry hay form. Because of the high yield of forage sorghum, this crop is a valuable choice for producers in Oklahoma and surrounding regions with heavily dominated livestock production. For such a high yielding crop nitrogen fertilizer application is extremely... S. Sawatzky, S. Phillips |