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1. The Conservation Reserve Program- Changes on the HorizonTen years ago, Congress passed the foundation of current conservation programs--the Food Security Act of 1985. Today, one program in particular, has exceeded many peoples' expectations. The Conservation Reserve Program (CRP) yas designed to take 40 - 45 million acres of highly erodible cropland out of production for a 10 - 15 year period. As the first CRP contracts begin to expire, Congress and the Administration are grappling with the program's future in the context of the 1995 farm bill. Will the... |
2. Phosphorus Stratification- is it Relevent to P uptake by SoybeanStratification of nutrients, observed in soils under continuous no-till management, remains an issue. Two experiments were conducted during 2001 and 2002 to evaluate the effect of stratification on P nutrition of soybean (Glycine nzax (L.) Merr.). At the fist site there were five blocks with stratified and unstratified main plots and five levels of soil test P as subplots. In the second trial there were four blocks with two stratification treatments as main plots, the absence and presence of in-row... |
3. 4R Nutrient Stewardship: A Component Of Agricultural Non-Point Source PolicyA challenge of agriculture is to increase production and feed the world without adversely affecting the environment. Fortunately, there is an immediate connection between applying the 4Rs (the right fertilizer source at the right rate, the right time and in the right place) and their beneficial impacts on crop performance, soil health and decreased environmental pollution. While any approach to addressing non-point source nutrient losses from agriculture must involve fertilizer best management practices... |
4. Reevaluating Potassium Recommendations for Soybean Production in KentuckyFertility recommendations from land grant universities are typically lower than private soil test laboratories and lead producers to question the adequacy of current recommendations. Further, soil samples analyzed at UK Regulatory Services Soil Testing Laboratory indicate that average state-wide soil test potassium (K) levels are declining approximately 1 lb K/A/year. The reason for this decline is not known, but some suspect it might be due to increased crop yields while maintaining historical... E. Ritchey, J.H. Grove, J.M. Mcgrath |
5. Comparing the Effectiveness of Calcium Products in Neutralizing Soil AcidityProper pH management is the foundation of a good soil fertility program. Soil pH influences nutrient availability, root growth and function. Acid soils are neutralized by the addition of carbonates, oxides, and hydroxides present in limestone products. However, there is a common perception that calcium is responsible for the neutralization of acid soils rather than the carbonates associated with calcium in the limestone. The effectiveness of three calcium products in raising soil pH were compared... E.L. Ritchey, J.H. Grove, C. Teutsch |