Crop & Soil Management 2007–2008

Crop & Soil Management 2007–2008
Section 4, Corn

Table 1.4-1. Approximate relative maturity rating and growing degree days available for Pennsylvania corn maturity zones.
Table 1.4-2. Example of adjusting plant nutrient recommendations for manure applications (corn following manure application, manure incorporated immediately).
Table 1.4-3. Example of adjusting plant nutrient recommendations for previous crop (125 bu/A corn following a legume).
Table 1.4-4. Nitrogen recommendation worksheet to be used for making PSNT-based sidedress N recommendations in Pennsylvania.
Table 1.4-5. Effects of method and time of nitrogen application (Penn State).
Table 1.4-6. Corn yield response from starter fertilizer, 3-year data (Penn State).
Table 1.4-7. Average yields of corn as affected by crop rotation over a 5-year period (1990-95) at Rock Springs.
Table 1.4-8. Estimated grain yields for various planting dates and population rates.
Table 1.4-8A. Estimated grain yields for various planting dates and population rates.
Table 1.4-9. Corn planting and plant population guide.
Table 1.4-10. Whole plant moisture and silage yield (65% moisture) relative to stage of kernel development.
Table 1.4-11. Kernel/ear moisture relationship.
Table 1.4-12. Weight of corn (shelled and ear) to equal 56 lb (1 bu) shelled corn at 15.5% moisture.
Table 1.4-13. Length of row equal to 1/1,000 acre.

Figure 1.4-1. Pennsylvania corn maturity zones and the approximate relative maturity (RM) of adapted hybrids
Figure 1.4-2. Effect of delayed nitrogen application on nitrogen vulnerability.
Figure 1.4-3. Kernel milk line showing separation between firm starch and milky starch.