diatomaceous earth application to agriculture

# Diatomaceous Earth Application in Agriculture

## Introduction
Diatomaceous earth (DE) is a naturally occurring, soft sedimentary rock composed of the fossilized remains of diatoms—microscopic algae with silica-based cell walls. It is widely used in agriculture as an organic pesticide, soil amendment, and animal feed additive due to its abrasive and absorbent properties. This article explores the benefits, applications, and precautions of using diatomaceous earth in farming.

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## Benefits of Diatomaceous Earth in Agriculture

1. Natural Pest Control
DE acts as a mechanical insecticide by damaging the exoskeletons of insects, causing dehydration and death. It is effective against:
– Crawling pests: Ants, cockroaches, bed bugs, fleas
– Garden pests: Aphids, mites, thrips, slugs
– Stored grain pests: Weevils, beetles

Unlike chemical pesticides, DE does not lead to pest resistance and leaves no harmful residues.

2. Soil Amendment
– Improves soil structure by enhancing drainage and aeration.
– Provides trace minerals like silica, calcium, magnesium, and iron.
– Helps retain moisture while preventing compaction.

3. Livestock Feed Additive
Food-grade DE is used in animal feed to:
– Reduce internal parasites (worms) in poultry and livestock.
– Improve digestion and nutrient absorption.
– Enhance coat/fur health due to its mineral content.

4. Fungal Disease Prevention
DE absorbs excess moisture around plants, reducing fungal growth (e.g., powdery mildew).

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## How to Apply Diatomaceous Earth

1. Pest Control Application
– Dry Method: Dust plants lightly with DE using a duster or sieve (reapply after rain). Focus on undersides of leaves where pests hide.
– Wet Spray: Mix 4 tablespoons of DE per gallon of water + a few drops of dish soap (stir frequently while spraying).

⚠️ Avoid applying during flowering to protect pollinators.

2. Soil Treatment
Mix 1–2 cups of DE per cubic foot of soil before planting or top-dress around established plants.

3. Grain Storage Protection
Add 1–2% food-grade DE to stored grains/seeds to prevent insect infestations.

4. Livestock Use
Mix 2% food-grade