Maize (corn) is a widely grown crop in India, but achieving high yield depends on two key factors:
👉 effective pest control and 👉 balanced nutrient management

Without proper planning, pests can reduce yield drastically, while poor nutrition leads to weak plants and low grain filling. This guide provides a complete Integrated Pest Management (IPM) + fertilizer strategy for better productivity.

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🐛 Major Pests in Maize & Their Control

🥇 1. Fall Armyworm (Most Dangerous Pest)

Scientific name:

• Spodoptera frugiperda

Damage:

• Feeds on leaves and whorl
• Creates holes and ragged leaves
• Severe yield loss

✅ Control:

• Spray:
  • Bacillus thuringiensis kurstaki

👉 Apply early when larvae are small

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🥈 2. Stem Borer

Damage:

• Dead heart in young plants
• Tunneling inside stem

✅ Control:

• Spray or apply:
  • Bacillus thuringiensis

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🥉 3. Aphids & Shoot Fly

Damage:

• Sap sucking weakens plants
• Stunted growth

✅ Control:

• Spray:
  • Verticillium lecanii
  • Beauveria bassiana

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🕷️ 4. Mites

Damage:

• Yellowing of leaves
• Reduced photosynthesis

✅ Control:

• Spray:
  • Hirsutella thompsonii

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📅 Stage-wise Pest Management Plan

🌱 Early Stage (0–20 Days)

• Monitor field regularly
• Apply BTK if pest appears

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🌿 Vegetative Stage

• Spray every 10–15 days:
  • Verticillium lecanii (sucking pests)

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🌽 Reproductive Stage

• Focus on:
  • Fall armyworm control
  • Stem borer management

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⚠️ Emergency Situation

• Combine bio-agents
• Use minimal chemicals if infestation is severe

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🌿 Fertilizer & Nutrient Management Guide

🌱 1. Basal Application (At Sowing)

• Apply:
  • Nitrogen (partial dose)
  • Phosphorus (full dose)
  • Potassium (full dose)
• Add biofertilizers:
  • Azotobacter
  • Phosphate Solubilizing Bacteria

👉 Improves nutrient availability from start

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🌿 2. Top Dressing (25–30 Days)

• Apply remaining nitrogen
• Supports vegetative growth

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🌽 3. Tasseling & Grain Filling Stage

• Apply potassium and micronutrients
• Improves grain formation

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🌱 Role of Biofertilizers in Maize

Key microbes:

• Azotobacter → nitrogen fixation
• Phosphate Solubilizing Bacteria → phosphorus availability
• Potash Mobilizing Bacteria → potassium uptake

Benefits:

• Reduces fertilizer cost
• Improves soil health
• Enhances yield

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💧 Irrigation Management

• Critical stages:
  • Germination
  • Knee-high stage
  • Tasseling
  • Grain filling

👉 Avoid water stress during these stages

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🌿 Cultural Practices

• Maintain proper spacing
• Remove infected plants
• Practice crop rotation
• Use resistant varieties

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🔄 Best Integrated Approach

👉 Combine:

• BTK → Caterpillar control
• Beauveria + Verticillium → Sucking pests
• Azotobacter + PSB → Nutrient efficiency

👉 This ensures:

• Pest protection
• Strong plant growth
• Higher yield