Author: Elizabeth Sue MalonePublisher:
ISBN:
Category :
Languages : en
Pages : 426
Book Description
Effect of Residual Nitrate in Soil Profiles on the Nitrogen Fertilizer Requirements of Corn
Author: Elizabeth Sue MalonePublisher:
ISBN:
Category :
Languages : en
Pages : 426
Book Description
Effect of Nitrogen Fertilizer on Corn Yield and Soil Nitrates
Author: Predicting N Fertilizer Needs for Corn in Humid Regions
Author: Effects of Residual Profile Nitrate Accumulation and Retention on Corn Response to Applied N
Author: Scott LeclercResidual Effects of Fall- and Spring-applied Nitrogen Fertilizers on Crop Yields in the Southeastern United States
Author: Robert W. PearsonPublisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 24
Book Description
Nitrogen fertilizer broadcast in November or December on widely different soils at seven locations in Alabama, Georgia, and Mississippi during 1955-59 was only 49 percent as effective as nitrogen fertilizer applied the following spring when measured by corn yields. In terms of nitrogen recovered, the relative effectiveness was 62 percent. There were no consistent differences among the five nitrogen sources applied in the fall as measured by corn yields, but nitrogen recovery tended to be lower from urea than from the other sources. Considerable residual effects of spring-applied nitrogen were found over a period of 16 months based on both yield and nitrogen uptake by the crops. Average uptakes of 25 and 34 pounds per acre of additional nitrogen were made by the second and third crops, respectively, from the 200-pound original application. This residual nitrogen produced average yield increases of 1,600 pounds of dry forage and 19 bushels of corn per acre. These results emphasize the economic importance of residual nitrogen and the need for soil test procedures for its estimation.
Effect of Various Factors on Movement of Nitrate Nitrogen in Soil Profiles and on Transformations of Soil Nitrogen
Author: Robert James OlsenPublisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 186
Book Description
Influence of Applied Nitrogen on Nitrate Distribution in Soil Profiles and Nitrate Uptake by Corn
Author: Russell Paul SchneiderPublisher:
ISBN:
Category : Corn
Languages : en
Pages : 164
Book Description
Assessment of Residual Fertilizer Nitrogen in a Long-term Crop Sequence Study
Author: Matias Bernardo VanottiPublisher:
ISBN:
Category :
Languages : en
Pages : 458
Book Description
Author: Steven Lyle Oberle
Author: David W. James