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The Nebraska Phosphorus Index (2012): Background And Users Guide, Charles Wortmann, Charles Shapiro, Leslie J. Johnson, Renee F. Hancock
The Nebraska Phosphorus Index (2012): Background And Users Guide, Charles Wortmann, Charles Shapiro, Leslie J. Johnson, Renee F. Hancock
University of Nebraska-Lincoln Extension: Historical Materials
This publication provides the basis and procedure for using a phosphorus (P) index to assess risk of P delivery from agricultural land to surface waters. The P index is intended for planning as well as regulatory and educational purposes.
Phosphorus is an essential nutrient for the growth of both crops and aquatic vegetation. Phosphorus, either in inorganic form such as with fertilizer or in organic form as with animal manures, often needs to be applied to the land for optimal crop growth. An important byproduct of animal feeding is manure that contains P. Land application of manure can be beneficial …
Manure Incorporation And Crop Residue Cover — Part I: Reduction Of Cover, David P. Shelton
Manure Incorporation And Crop Residue Cover — Part I: Reduction Of Cover, David P. Shelton
University of Nebraska-Lincoln Extension: Historical Materials
How residue cover is reduced by soil-engaging components typically used with tank spreaders and towed hose systems to apply liquid or slurry manure.
Manure incorporation represents a compromise between best management practices for soil erosion control and manure management. Manure should be incorporated into the soil for odor control, increased availability of nutrients, and control of potential manure runoff; however, disturbing the soil and crop residue may increase soil erosion and water runoff. This NebGuide summarizes the results of a field study to determine the influences on crop residue cover of common equipment used to simultaneously apply and incorporate manure.
G1564 Manure Incorporation And Crop Residue Cover — Part Ii: Fine-Tuning The System, David P. Shelton
G1564 Manure Incorporation And Crop Residue Cover — Part Ii: Fine-Tuning The System, David P. Shelton
University of Nebraska-Lincoln Extension: Historical Materials
How injector/applicator spacing, tire spacing, field speed, and other factors influence the amount of residue cover reduction after manure incorporation.
Manure incorporation represents a conflict between best management practices for soil erosion control and manure management. Manure should be incorporated into the soil for odor control, maximum availability of nutrients, and control of potential manure runoff. However, for maximum soil erosion control, the soil and crop residue should remain undisturbed. These two best management practices must be balanced since disturbing the soil and residue for manure incorporation, either with conventional tillage implements or equipment specifically designedfor manure application, reduces the …