Soybeans!!!

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

Excess nitrogen

-slows and even stops nitrogen fixation by

soybean plant.

Harvest

                

      

by combine, using platform header

DryingPurpose: prevent mold, longer storage life.

Drying RequirementsIdeal is 13%-16% moisture

-12%-20% is acceptable-Temperature < 110º F

Soybean Diseases-Phytophthora Root Rot

-Sclerotinia Root Rot

-Brown Stem Rot

-Phomopsis seed rot

-Soybean Cyst Nematode

Phytophthora Root Rot-Caused by fungus from moisture

-First seen in Ohio in 1951-Common in poorly drained, compacted soils.

Phytophthora Root Rot

Controlling Phtyo. Root Rot-Use of fungicides

-Use resistant varieties-Use well-drained soils

-Keep compaction to minimum

Sclerotinia Stem Rot

-caused by sclerotinia fungus-white mold on dry beans-discovered in Nebraska

Sclerotinia Stem Rot

Sclerotinia Stem Rot Prevention

-15 inch row spacing, more air circulation

-Limited crop rotation, prevent spread

-Using resistant varieties

Brown Stem Rot-fungus from crop residue

-can reduce yields as much as 38%

Brown Stem Rot

Brown Stem Rot Prevention-Intense crop rotation

-Use of no-till

-Use resistant varieties

-Narrow row widths

Phomopsis Seed Rot-Occurs in delayed harvest due to

wet, rainy weather

-Caused by three different fungi, and can survive winter

Phomopsis Seed Rot

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

Soybean Cyst Nematode-microscopic roundworm, 1/64 inch in length

-penetrates roots and feeds on

vascular system.

-can’t reproduce without host

Soybean Cyst Nematode

Soybean Cyst Nematode Prevention

-crop rotation

-plant resistant varieties

-control weed hosts

-maintain balanced fertility

-plant early

-clean equipment