How to Apply Pseudomonas fluorescens on Cardamom & Pepper – Step‑by‑Step Guide

Many farmers apply Pseudomonas fluorescens incorrectly and then think it doesn't work. Follow these simple steps from Bactostore to get full value.

How Pseudomonas fluorescens works: The bacteria colonise the plant's root zone and leaf surfaces. They produce antifungal metabolites (pyoluteorin, pyrrolnitrin, DAPG, HCN) that kill fungal pathogens. They also produce siderophores that starve pathogens by binding iron, and trigger the plant's own defence mechanisms (induced systemic resistance).

For cardamom disease control:

KAU‑recommended prophylactic method for stem rot prevention:

  1. Prepare a 2% solution of Pseudomonas fluorescens – mix 20 ml of Bactostore's liquid or 20g of powder in 1 litre of water

  2. Mix this with cow dung supernatant (prepare by soaking well‑decomposed cow dung in water overnight, then filtering)

  3. Spray on the plant bases and drench the soil around each clump

  4. Apply before the onset of summer (February‑March)

  5. For best results, combine with basal application of AMF (100g/plant) and Trichoderma asperellum (50g/plant)

Foliar spray for capsule rot and foliar diseases:

  • For liquid formulation: Take 1‑2 litres of Bactostore's Pseudomonas fluorescens liquid per acre. Dilute in 200‑400 litres of water.

  • For powder formulation: Take 1‑2 kg of Bactostore's Pseudomonas powder per acre. Mix in 200‑400 litres of water.

  • For better results, add 2 kg jaggery (gur) – the sugar feeds the bacteria, boosting growth and colonisation.

  • Spray thoroughly on both sides of leaves, on stems, and on capsules. Pay special attention to the base of plants where stem rot starts.

  • Spray in early morning or late evening when UV rays are low.

  • Repeat every 15 days during the monsoon season (June‑September).

Soil drench for root rot and Fusarium wilt:

  1. Take 1‑2 litres of liquid or 1‑2 kg of powder

  2. Dilute in 200‑400 litres of water

  3. Drench the soil around each cardamom clump

  4. For better results, mix with 50‑100 kg well‑decomposed cow dung per acre

  5. Repeat every 30 days during the growing season

For black pepper foot rot / quick wilt control:

Soil drench (for foot rot):

  1. Take 1‑2 litres of Bactostore's Pseudomonas fluorescens liquid or 1‑2 kg of powder per acre

  2. Dilute in 200‑400 litres of water

  3. Drench the solution directly around the root zone of each pepper vine

  4. For severe infestations, apply 1‑2 litres of drench solution per vine

  5. Repeat every 20‑30 days during the monsoon season

Foliar spray (for foliar symptoms of foot rot):

  1. Mix 2‑5 ml of liquid per litre of water (or 5‑10g of powder)

  2. Spray thoroughly on leaves, stems, and spikes

  3. Pay special attention to the base of the vine where foot rot starts

  4. Spray in early morning or late evening

  5. Repeat every 15 days during active disease period

Combined approach for severe foot rot:

  1. First, drench the soil around the root zone

  2. Then, spray the foliage and stem

  3. Apply both treatments on the same day for best results

For seed treatment (both cardamom and pepper):

Liquid method:

  1. Mix 10 ml of Bactostore's Pseudomonas liquid in 1 litre of water

  2. Soak seeds for 10‑15 minutes before sowing

  3. Shade dry for 30 minutes before planting

Powder method:

  1. Mix 10g of Bactostore's Pseudomonas powder with seeds for 1 kg of seed material

  2. Add enough water to make a slurry

  3. Mix thoroughly so all seeds are coated

  4. Shade dry for 30 minutes before planting

For drip irrigation (regular preventive application):

  1. Take 1‑2 litres of Bactostore's Pseudomonas fluorescens liquid per acre

  2. Dilute in 200 litres of water

  3. Apply through drip system every 20‑30 days during the growing season

  4. This provides continuous, low‑level protection

Three golden rules from Bactostore:

  1. Apply in early morning or late evening – sunlight and UV rays kill Pseudomonas bacteria. Never spray in midday sun.

  2. Keep the spray solution fresh – use mixed solution within 24 hours. Do not store mixed solution for more than a day.

  3. Never mix with copper‑based fungicides – copper hydroxide, copper oxychloride (COC), Bordeaux mixture will instantly kill the beneficial bacteria.

Compatibility guide (based on KAU research):

Compatible with:

  • Insecticides: Acephate, quinalphos, chlorantraniliprole, dimethoate, imidacloprid, flubendiamide, neem oil, pongamia oil mixture

  • Fungicides: Hexaconazole, potassium phosphonate + hexaconazole mixture

  • Fertilisers: Single super phosphate (SSP), muriate of potash (MOP), urea, bone meal, urea granules

  • Other biocontrol agents: Trichoderma (works synergistically), AMF

NOT compatible with:

  • Insecticides: Chlorpyriphos, acetamiprid, carbosulfan

  • Fungicides: Fosetyl aluminium, copper hydroxide, copper oxychloride (COC), cymoxanil + mancozeb mixture

  • Fertilisers: Micronutrient mixture (some formulations)

  • If you must use these chemicals: Apply the chemical first, wait 5‑7 days, then apply Pseudomonas. Or apply Pseudomonas first, wait 5‑7 days, then apply chemicals.

Shelf life and storage:

  • Liquid: 12‑18 months. Store at room temperature away from direct sunlight. Do not freeze.

  • Powder: 8‑12 months. Store in a cool, dry place. Keep container tightly closed.

  • Refrigeration (4°C) can extend shelf life for long‑term storage, but room temperature storage is fine for 6‑8 months.

  • Do not store in direct sunlight or in damp places – moisture can reduce viability.

For a free application calendar tailored to your Idukki farm, WhatsApp your crop details to 9146150117 or visit www.peaklab.co.in.

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