Crop: Peanut

Overview

Peanuts are a major economic crop cultivated extensively in tropical and subtropical regions of Asia, Africa, and South America. With high oil content, they are an important raw material for food, animal feed, and edible oil production. However, peanut farming is often challenged by a range of diseases, pests, and weeds, which can cause significant losses in yield and quality if not effectively managed.

Integrated Crop Protection Recommendations

✅ Choose certified disease-free peanut seeds. Before sowing, use peanut-specific seed dressings Thiamethoxam 30% FS to prevent seed-borne diseases and seedling root rot.

✅ Rotate with corn and wheat. When residual pest and disease populations are high, apply soil treatment pesticides Chlorpyrifos 10% GR before sowing.

✅ Maintain a row spacing of 30-40cm and hill spacing of 15-20cm. At the initial stage of high-humidity diseases, spray protective fungicides Mancozeb 80% WP.

✅ Regularly inspect for diseases early/late leaf spot and pests aphids, white grubs. When economic thresholds are reached, use corresponding specialized pesticides Propiconazole 25% EC for fungal diseases Imidacloprid 70% WDG for aphids.

✅ Use our peanut pesticides Epoxiconazole 12.5% SC for rust according to thresholds. Avoid overuse to delay resistance development.

✅ Harvest promptly when pods mature. When Aspergillus infection initially appears before rain, spray low-residue anti-mold pesticides Thiophanate-methyl 70% WP to prevent aflatoxin contamina.

Common Peanut Diseases

1. Late Leaf Spot (Cercosporidium personatum)

Symptoms: Small brown spots with yellow halos on leaves, usually starting from lower leaves; premature defoliation.
Prevention & Control: Use resistant varieties; apply agrochemicals such as chlorothalonil or tebuconazole; rotate with non-legume crops.
Common agrochemical to use : Chlorothalonil 720g/L EC; Tebuconazole 250g/L EC

2. Rust (Puccinia arachidis)

Symptoms: Reddish-brown pustules on the underside of leaves; causes rapid leaf drop.
Prevention & Control: Apply preventive agrochemical sprays; avoid overhead irrigation.
Common agrochemical to use : Triadimefon 250g/L EC; Propiconazole 250g/L EC

3. White Mold / Stem Rot (Sclerotium rolfsii)

Symptoms: White fungal growth at stem base; wilting and plant death.
Prevention & Control: Rotate with cereals; deep plow to bury sclerotia; apply soil agrochemicals.
Common agrochemical to use : Pentachloronitrobenzene 40% WP; Thiophanate-methyl 70% WP

4. Aspergillus Crown Rot (Aspergillus niger)

Symptoms: Black fungal growth near crown; stunted plants, seed decay.
Prevention & Control: Use high-quality seed; treat seed with agrochemical before planting.
Common agrochemical to use : Fludioxonil 2.5g/L FS; Carbendazim 50% WP

Major Peanut Pests

1.Thrips

Damage: Feeding causes silvering of young leaves, stunting.
Management: Use insecticide seed treatments.
Common agrochemical to use: Imidacloprid 600g/L SC
Monitor early growth stage.

2. Aphids (Aphis craccivora)

Damage: Suck sap from leaves and stems, transmit viruses.
Management: Apply systemic insecticides.
Common agrochemical to use: Acetamiprid 200g/L SL
Encourage natural predators like lady beetles.

3. Beetles

Damage: Chew leaves, reducing photosynthetic area.
Management: Handpick in small fields; apply contact insecticides if infestation is heavy.
Common agrochemical to use: Lambda-cyhalothrin 25g/L EC

4. Cutworms

Damage: Cut seedlings at soil level during night feeding.
Management: Maintain weed-free fields; use soil insecticides before planting.
Common agrochemical to use: Chlorpyrifos 480g/L EC

5. Armyworms

Damage: Defoliate plants during vegetative stage.
Management: Monitor at night; apply appropriate insecticides when thresholds are reached.
Common agrochemical to use: Spinosad 480g/L SC

Common Peanut Weeds

1. Dicot Weeds

Commelina benghalensis L. (Bengal Dayflower) : Controlled with bentazone 480g/L SL.
Mimosa invisa Mart. (Invasive Mimosa) : Controlled with alachlor 48% EC.
Tridax procumbens L. (Tridax Daisy) : Can be selected trifluralin + bentazone 40% SL.

2. Monocot Weeds

Axonopus compresus (Sw.) P. Beauv. (Carpet Grass) : Controlled with quizalofop-p-ethyl 10% EC or 5% EC.
Cyperus esculentus L. (Yellow Nutsedge) : Controlled with bentazone 48% EC.
Digitaria horizontalis Willd. (Horizontal Crabgrass) : Can be used clethodim 12% EC or 24% EC.
Eleusine indica (L.) Gaertn. (Goosegrass) : Can be used quizalofop-p-ethyl 10% EC or clethodim 12% EC.

3. Parasitic Weeds

Striga hermonthica (Del.) Benth. (Purple Witchweed) : Controlled with glyphosate 480g/L SL or paraquat 276g/L SL.

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