Soybean is known as the GOLDEN BEN. If you cultivated soybean then face many problems, Today I fully discuss Soybean insect pest management.
Whitefly has belonged to the Aleyrodidae family. Nymphs and adult both suck the sap from leaves and cause damage. When a plant has multiple whitefly attacks, the plant becomes weak. They carry viral diseases. The sucking of the sap leaves discolored patches on the parts of the leaf.
i) Avoided planting next to crops infested with whitefly.
ii) Plant resistant varieties where available.
iii) Adopt spraying methods, improve coverage, especially underneath leaves.
iv) Spray Diafenthiuron @ 1gm/liter or Triazophos 40EC @ 1.5gm/liter.
Soybean insect pest management
Soybean Stem fly
The maggots are 10-15mm in length and color is light whitish. The adult is small black fly. They are attack older plants show stunting but are not usually killed. The adults feed on the leaves by making multiple punctures which appear white dots. The infested plants show partly dried and drooping leaves which are the typical marks of identification of the pest.
i) Removed and destroy all the affected branches during the initial stages of the attack.
ii) Apply phorate 10G @ 7.5kg/ha or Carbofuran 3G @ 25kg/ha.
iii) Spray Endosulfan 30 EC @ one liter or /monocrotophos 40EC @ 625ml in 250 liter of water.
The aphid feeding can cause wilting, leaf yellowing, curling, and distortion and stunted or distorted new shoots. They have pear-shaped bodies with long antennae the nymphs similar look to adult. Some aphids species cause gall to form on roots or leaves and some aphids flowers or fruit can become distorted or deformed due to feeding aphids.
i) Destroy egg, larva then better for your plants.
ii) Phosphamidon 40 SL or Dimethoate 30EC @200gm/500 liters of water/ha.
Soybean Stem Borers (Soybean insect pest management)
The stem borer larvae bore at the base of the plants during the vegetative stage. Signs of damage include the presence of brown-colored egg mass presence near the leaf tip in Nasrin and early replaced plants. The yellow larvae hatch out from the eggs in 5-8 days, enter the leaf sheath, feed for 2-3 days and then bore into the stem near the node.
i) Avoided closing planting.
ii) Use light traps and kill the moths.
iii) Cultivated resistant varieties.
iv) Apply Nitrogen-based fertilizer to soil recommended.
v) Spray Monocrotophos 36SL @ 1100ml/ha or Chlorpyriphos 20EC @ 2000 ml/ha
Soybean root-knot Knot (Soybean insect pest management)
Normally we have seen problems with Cyst and root-knot in our regular rotations. Roots have knots or gall of different size disrupt the flow of nutrients and water to the top of the plant.
Crop rotation every three years.
Cultivated resistant varieties.
Apply nematicides where the expense can be justified.