Deficiency of Micronutrients and Application of Fertilizer at 75DA Planting
Plants require a balanced combination of macronutrients and micronutrients to grow and develop properly. While macronutrients like nitrogen, phosphorus, and potassium are needed in larger amounts, micronutrients like iron, zinc, and manganese are required in smaller quantities. However, the deficiency of micronutrients can have a significant impact on plant growth, leading to stunted growth, poor yield, and reduced quality.
One way to address micronutrient deficiencies is through the application of fertilizers at the right time and in the right amount. At 75 days after planting (75DA), plants have already established their roots and foliage and are entering their reproductive phase. This is a crucial time to ensure that they have adequate nutrient availability to support the formation of fruits or grains. Here are some of the key micronutrients that may be lacking and their corresponding fertilizer options:
Iron: Iron is essential for the formation of chlorophyll, which is responsible for photosynthesis. Iron deficiency often results in yellowing of leaves, a condition known as chlorosis. Iron chelates or iron sulfate can be applied as foliar spray or soil amendment to provide iron to the plants.
Zinc: Zinc is important for enzyme activity and growth hormone production in plants. Zinc deficiency can cause stunted plants, small fruit, and yellowing between the veins of leaves. Zinc sulfate or zinc chelates can be applied to the soil or leaves to address the deficiency.
Manganese: Manganese helps in the absorption and utilization of nitrogen in plants. Manganese deficiency can lead to poor root growth, yellowing of leaves, and reduced photosynthesis. Manganese sulfate or manganese chelates can be applied to the soil or leaves to supply the micronutrient.
Other micronutrients that may need to be supplemented at 75DA include boron, copper, and molybdenum. The amount and frequency of micronutrient application will depend on the specific crop, soil type, and existing nutrient levels. It is important to consult with an agronomist or soil testing service to determine the appropriate fertilization program.
In conclusion, the deficiency of micronutrients can have a detrimental effect on plant growth and yield. Applying fertilizers containing the necessary micronutrients at 75DA can help to address deficiencies and ensure that the plants have the nutrients they need during their crucial reproductive phase. Proper fertilization management is key to maximizing crop yield and quality.