Mastering Manures and Fertilizers

Soil amendments are substances added to the soil to improve its physical and chemical properties. They are important because they help in enhancing soil fertility, nutrient availability, and overall crop productivity.

Two types of secondary and micronutrient fertilizers are calcium and magnesium fertilizers. They help in improving soil fertility and crop growth by providing essential nutrients to the plants.

The Fertilizer Control Order is a regulatory framework that governs the production, quality, sale, and distribution of fertilizers. It is significant because it ensures the availability of quality fertilizers in the market and prevents the misuse or adulteration of fertilizers.

Several factors affect nutrient availability to plants, including soil pH, temperature, moisture, organic matter content, and the presence of other elements. These factors influence the solubility and mobility of nutrients in the soil, and ultimately determine their uptake by plants.

Different methods used for soil fertility evaluation include chemical methods, which analyze the nutrient content of the soil, and critical levels, which establish the minimum nutrient levels required for optimum plant growth.