Question

how can we reduce using pesticides ​

Answer 1

Explanation:

Crop rotation: Crop rotation is an efficient way of preventing pests from getting used to the types of plants that are being cultivated. ...

Intercropping: Intercropping involves simultaneous cultivation of two or more crops on the same field. ...

Maintaining crop diversity: ...

Using pests to fight pests: ...

Organic Pesticides:

Answer 2

Explanation:

Agronomic practices.

Suitable agronomic practices are essential to achieve healthy crops and to prevent build-up of pest, disease and weed pressure. The following practices are of particular importance:

Appropriate plant nutrition and soil fertility management;

Crop rotation;

Appropriate irrigation management;

Appropriate timing of sowing or planting and of intercultural operations in order to reduce pest;

Timely shallow tillage reduces weed populations and at the same time improves nutrient supply to the crop;

Precision farming like spraying of hot-spots and weeding with optical detectors;

Intercropping (when it is possible) and the use of variety mixtures limits the spread of pests and diseases and provides food and shelter for natural enemies of pests;

2. Resistant crops

Crops and crop varieties differ in their susceptibility to pests and diseases and in their ability to compete with weeds. Growing crops suitable for local conditions and selecting appropriate crop varieties is therefore fundamental to a preventive pest management system. The use of resistant varieties together with rotations of non-susceptible crops can substantially limit pest build-up within a field.

3. Bio-control and Natural Pesticides

Bio-control makes use of pathogens (bacteria, fungi, viruses), insect predators or parasitoids, pheromones and insect traps to keep pest populations low.