Plants Repel Pests in Brazilian Gardens

Why this is here: Companion planting can reduce pest incidence by up to 80% without the use of external pesticides, according to a study by Embrapa and family farmers.

Researchers with Embrapa, working with family farmers, found that companion planting eliminates between 60% and 80% of pest incidence without external help. This sustainable technique uses the natural scents of certain plants to confuse insects and protect gardens. The practice relies on allelopathy, where chemical substances positively influence surrounding plant life.

Basil and tomato, garlic and lettuce, and marigolds are a few effective combinations. These pairings offer preventative protection, working constantly without direct application like soap solutions. This method also avoids the development of pesticide resistance in pests.

However, successful companion planting requires careful planning to ensure adequate sunlight and nutrient compatibility between species. The ideal combinations depend on specific crops and local pest pressures. Researchers continue to study effective pairings and optimal spacing for different garden environments.