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Full-Text Articles in Physical Sciences and Mathematics
Should Burley Tobacco Farmers Be Concerned About High Rates Of Nitrogen Fertilizers?, Robert C. Pearce, Gary K. Palmer
Should Burley Tobacco Farmers Be Concerned About High Rates Of Nitrogen Fertilizers?, Robert C. Pearce, Gary K. Palmer
Soil Science News and Views
The use of nitrogen (N) fertilizer for tobacco production is necessary because (1) tobacco takes up sizable amounts of N, and (2) most soils cannot provide adequate amounts of N. Rates of fertilizer N recommended by the University of Kentucky for burley tobacco production vary based on past cropping history, and under certain conditions can be as high as 350 lbs. N/A However, since tobacco is a high value crop, and profit margins are high, farmers often apply more N than is recommended as insurance against crop losses. The perception of widespread over-application of fertilizer N has resulted in increased …
Using Solid, Bulk Blended Mix-Grade Fertilizers, Kenneth L. Wells, Jonathan D. Green
Using Solid, Bulk Blended Mix-Grade Fertilizers, Kenneth L. Wells, Jonathan D. Green
Soil Science News and Views
Most solid, mixed fertilizers used in Kentucky are prepared by physically mixing two or more fertilizer materials to a desired analysis. The ingredient materials most commonly used to prepare mixed fertilizers in Kentucky are diammonium phosphate, urea, ammonium nitrate, muriate of potash, and sulfate of potash. During the period January - June, 1990, these 5 materials made up 60% of the 700,000 tons of fertilizer used in Kentucky. And just three of them ... urea, diammonium phosphate and muriate of potash ... made up 47% of the total used during that period.
Maximum Net Returns From Fertilizers, Lloyd W. Murdock, Kenneth L. Wells, William O. Thom
Maximum Net Returns From Fertilizers, Lloyd W. Murdock, Kenneth L. Wells, William O. Thom
Soil Science News and Views
Considerable interest in trends taking place in the consumption of commercial fertilizers in Kentucky has been evident during the last two or three years. Due both to the stressed agricultural economy and to government programs, total tonnage has dropped significantly. This has made a direct impact on the fertilizer industry serving Kentucky. Concern has been expressed that UK is "telling farmers that they're using too much fertilizer", suggesting that this is the cause of the reduced volume experienced by many dealers. We hope to address this concern in such a way that UK's position regarding use of commercial fertilizers for …
After 15 Years Of No-Tillage Corn, Robert L. Blevins
After 15 Years Of No-Tillage Corn, Robert L. Blevins
Soil Science News and Views
Farmers shifting from a system of agricultural production that includes intensive tillage operations to a reduced or no-tillage system are often concerned about how this change may affect soil properties and productivity. No-tillage leaves the residues and fertilizers on the soil surface with no mechanical incorporation and may result in soil properties greatly different from plowed soils.