Agronomy Guide 2009–2010

Tables

• Table 2.1-1. Comparison between activities of an ideal IPM program and a routine spray program.
• Table 2.1-2. Key times for corn insect activity.
• Table 2.1-3. Key times for alfalfa insect activity.
• Table 2.1-4. Key times for soybean insect activity.
• Table 2.1-5. Key small-grain insects.
• Table 2.1-6. Field characteristics that increase the likelihood of certain pests in corn.
• Table 2.1-7. Yield reduction from various weed species in corn and soybeans.
• Table 2.1-8. Some herbicide classes, products, and resistant weeds identified in the United States.
• Table 2.1-9. Important herbicide groups for corn, soybean, small grain, forages, and some vegetable crops.
• Table 2.1-10. Common premix herbicides for agronomic crops in Pennsylvania.

Figures

• Figure 2.1-1. Percentage of alfalfa fields with above-threshold weevil infestation in Maryland, 1983 to 1989, and Pennsylvania, 1986 to 1989.
• Figure 2.1-2. Percentage of fields with threshold levels of alfalfa weevil across locations in New York in 1988.
• Figure 2.1-3. Relationship between the economic injury level and the economic threshold with changing economic and biological conditions.