Module 1 : The Nitrogen Cycle and Crop Nitrogen Guidelines
This section covers the importance of efficient nitrogen use in agriculture
and a review of the crop and soil nitrogen cycle. The theory is put into
practice through calculations of crop nitrogen guidelines for New York State
with on-line calculators.
Module 2 : Nitrogen from Manure
The forms of nitrogen in manure, manure sampling and analysis, and nitrogen
availability from present and past applications are discussed in this section.
Nitrogen availability can be estimated for various manure application rates,
timings, and methods with on-line calculators.
Module 3 : Manure and Fertilizer Phosphorus Management
This section covers the importance and practice of efficient phosphorus use
in agriculture. Soil tests, crop yield calibration trials, and the resulting
crop phosphorus guidelines for New York State are used to make manure and fertilizer
Module 4 : The Phosphorus Runoff Index
This module discusses how to both identify high risk areas for phosphorus loss
from fields and reduce the risk. The approach is explained through the New
York State Phosphorus Runoff Index, a tool used by nutrient management planners
to reach both of these goals.
Module 5 : Fertilizer Management
The roles of fertilizers on dairy farms, methods of application, forms and
characteristics of the basic fertilizer ingredients, and the use of fertilizers
to supplement on-farm nutrients are covered in this section.