1. Soybeans!!!

2. Soil Fertility -pH of 6.2 to 7.0 -pH controls: lime (acid), anhydrous ammonia (base) -Potassium - 1.4 lbs. per acre -Phosphorous -.8 lbs. per acre -Nitrogen: from atmosphere and soil nitrates

3. Excess nitrogen -slows and even stops nitrogen fixation by soybean plant.

4. Harvest by combine, using platform header

5. Drying Purpose: prevent mold, longer storage life.

6. Drying Requirements Ideal is 13%-16% moisture -12%-20% is acceptable -Temperature < 110º F

7. Soybean Diseases -Phytophthora Root Rot -Sclerotinia Root Rot -Brown Stem Rot -Phomopsis seed rot -Soybean Cyst Nematode

8. Phytophthora Root Rot -Caused by fungus from moisture -First seen in Ohio in 1951 -Common in poorly drained, compacted soils.

9. Phytophthora Root Rot

10. Controlling Phtyo. Root Rot -Use of fungicides -Use resistant varieties -Use well-drained soils -Keep compaction to minimum

11. Sclerotinia Stem Rot -caused by sclerotinia fungus -white mold on dry beans -discovered in Nebraska

12. Sclerotinia Stem Rot

13. Sclerotinia Stem Rot Prevention -15 inch row spacing, more air circulation -Limited crop rotation, prevent spread -Using resistant varieties

14. Brown Stem Rot -fungus from crop residue -can reduce yields as much as 38%

15. Brown Stem Rot

16. Brown Stem Rot Prevention -Intense crop rotation -Use of no-till -Use resistant varieties -Narrow row widths

17. Phomopsis Seed Rot -Occurs in delayed harvest due to wet, rainy weather -Caused by three different fungi, and can survive winter

18. Phomopsis Seed Rot

19. Phomopsis Seed Rot Prevention -crop rotation with wheat and corn -Seed treatment for seed lots with low levels of infection (70 to 90% germination) -plow down crop residues for fields with heavy disease pressure

20. Soybean Cyst Nematode -microscopic roundworm, 1/64 inch in length -penetrates roots and feeds on vascular system. -can’t reproduce without host

21. Soybean Cyst Nematode

22. Soybean Cyst Nematode Prevention -crop rotation -plant resistant varieties -control weed hosts -maintain balanced fertility -plant early -clean equipment