Organic first, always

Remedies & local suppliers

Start with what costs almost nothing and is already on the farm. If the damage is past rescue, PlantIQ connects you to vetted organic input sellers close by.

Late Blight

Tomato / Potato

Water-soaked grey-green lesions spreading from leaf tips, with white mould on the underside in humid mornings.

  • Copper-free milk spray

    Organic

    Mix 1 part raw milk to 9 parts water. Spray leaves early morning, twice a week.

    ≈ $0.30 per application

  • Remove & burn infected foliage

    Organic

    Cut affected leaves at the stem, bag them, and burn away from the field.

    Free

  • Neem + baking soda barrier

    Organic

    5 ml neem oil + 5 g baking soda + 1 L water. Coat both leaf surfaces weekly.

    ≈ $0.60 per litre

Leaf Rust

Maize / Wheat

Small orange-brown powdery pustules scattered across the upper leaf surface, rubbing off on fingers.

  • Sulphur dust (wettable)

    Organic

    Apply 2 g/L in the cool of the evening. Avoid when above 30 °C.

    ≈ $0.45 per litre

  • Garlic-chilli extract

    Organic

    Blend 100 g garlic + 50 g chilli in 1 L water, steep overnight, strain and spray.

    ≈ $0.20 per litre

Powdery Mildew

Cucurbits / Beans

Dusty white patches on leaf tops, later yellowing and curling of the whole leaf.

  • Whey or milk spray

    Organic

    40% milk to 60% water in full sun. Repeat after rain.

    ≈ $0.25 per litre

  • Improve airflow

    Organic

    Thin dense foliage and widen row spacing to cut humidity around the canopy.

    Free

Bacterial Leaf Spot

Pepper / Tomato

Dark, angular, water-soaked spots with yellow halos that dry and tear out of the leaf.

  • Compost tea drench

    Organic

    Aerated compost tea weekly to build competitive leaf microbes.

    ≈ $0.15 per litre

  • Stop overhead watering

    Organic

    Switch to basin or drip watering to keep foliage dry.

    Free

Fall Armyworm Damage

Maize / Sorghum

Ragged window-pane feeding in the whorl with moist sawdust-like frass.

  • Wood-ash + sand whorl treatment

    Organic

    Pinch of dry ash mixed with fine sand dropped into each infested whorl.

    Free

  • Neem seed kernel extract

    Organic

    50 g crushed neem kernels per litre, steeped 12 h, sprayed into whorls at dusk.

    ≈ $0.35 per litre

Vetted local suppliers

Anna Organics Co-op

Bio-inputs

  • Cold-pressed neem oil
  • Compost tea starter

Green Furrow Supplies

Bio-pesticides

  • Trichoderma
  • Wettable sulphur

Mati Kisan Bhandar

Soil amendments

  • Vermicompost
  • Wood ash blend