Digital Commons Network^™

Soybean Inoculant Quality, J. L. Sims, E. C. Lacefield, Lloyd W. Murdock

Agronomy Notes

Research studies have shown that from 40 to 80 percent of the nitrogen required for a soybean crop comes from nitrogen fixed in the nodules, depending on the degree of nodulation and the level of soil nitrogen. Hence, it is important that soybean plants be well-nodulated for most efficient soybean production.

Effect Of Lime On No-Tillage Corn Yields, Robert L. Blevins, Lloyd W. Murdock

Agronomy Notes

The rapidly growing popularity and adoption of no-tillage systems of corn production have required us to re-evaluate some of our long established soil fertility practices and recommendations. Recent work by researchers at Kentucky and adjacent states show that the soil surface becomes very acid after a few years of continuous no-tillage corn production. This rapid decrease in soil pH is primarily associated with surface application of nitrogen fertilizers. Most lime recommendations and related research information for row crop production are based on plow-down application. Therefore, the effectiveness of surface-applied and unincorporated lime under no-tillage systems becomes a question of concern. …

A Computer Model For Evaluating Corn Harvesting, Handling, Drying And Storage Systems, Thomas C. Bridges, Otto J. Loewer Jr., John N. Walker, Douglas G. Overhults

Biosystems and Agricultural Engineering Faculty Publications

No abstract provided.

The Influence Of Harvest Rate And Drying Time On Grain Drying And Storage Facility Selection, Thomas C. Bridges, Otto J. Loewer Jr., Douglas G. Overhults

Biosystems and Agricultural Engineering Faculty Publications

No abstract provided.

Determination Of Strategy For Harvesting Burley Tobacco, Yasuhiko Miyake, Larry G. Wells, George A. Duncan, Jimmie Rankin

Biosystems and Agricultural Engineering Faculty Publications

The decision-making process associated with the scheduling of burley tobacco harvesting operations was formulated as a multi-stage decision process, and solved using a procedure called dynamic programming. The solution of a stochastic dynamic programming model provides a set of optimal decision rules, that is, a strategy. When certain user-specified parameters are provided, the decision model provides information concerning the optimal date to start harvesting, the optimal number of hours to harvest on each day, the optimal date to introduce hired labor, and the optimal number of workers which should be hired.

The solution of the dynamic programming model makes it …

Relationship Of Weed Control And Soil Ph To No-Tillage Corn Yields, J. J. Kells, C. E. Rieck, Robert L. Blevins, Charles H. Slack

Agronomy Notes

Atrazine and simazine are used for selective control of a broad spectrum of weeds in corn. Over 80% of the U.S. corn production is treated with one or the other of these two s-triazine herbicides. In Kentucky they are used annually on over 800,000 acres of corn, including over 200,000 acres of no-tillage corn. When added to the soil these compounds are ultimately degraded to non-phytotoxic compounds. The rate of degradation is dependent upon the physical, chemical, and biological properties of the soil. Although atrazine and simazine are chemically similar, simazine is considered to degrade slightly slower than atrazine after …