foot root disease or quick wilt of pepper.pptx

plant pathology

1. Quick wilt of pepper (Phytophthora foot rot )

2. Quick wilt is one of the most destructive diseases of Pepper prevalent in Kerala. The infection initiates with the onset of South-West Monsoon Affects all cultivable varieties and vines of all ages Quick wilt of pepper ( Phytophthora foot rot )

3. a. Die back: The aerial branches get infected at any point. At the site of infection of branch, the discoloration occurs and rotting progress upwards and downwards resulting in die-back symptoms. The lateral branches of the affected vines break off at the nodes and fall off. Causative organism: Phytopthora capsici Symptoms Die back Image source https://agritech.tnau.ac.in/crop_protection/pepper_diseases_1.html

4. b. Foot rot or Collar rot: The stem near the ground level get infected and the rotting and death of vine occurs within 2-3 weeks. The affected portion emits bad odour. The necrosis progress down wards to the underground stem and to the root system.

5. c. Root rot: The infection starts at main root or at feeder root. The leaves become yellow and defoliate.

6. Disease cycle The disease consists of two phases viz. aerial phase and soil phase. This fungus remains dormant in the soil during dry season and gets activated during rainy season as the soil moisture builds up. The disease spreads through infected planting materials, zoospores in soil water; rain splashes; root contact between healthy and infected vines, contaminated farm implements, movement of personnel, animals, etc. Termites and slugs also act as passive carriers of the inoculum.

7. Selection of healthy nursery material. Provide good drainage. Soil drenching with 1% Bordeaux mixture after removal of the affected plant. Spraying with 1% Bordeaux mixture (or) COC 0.25% (or) Alitte 0.3% Soil application of neem cake and Trichoderma viride or P. fluorescens\ Control measures