Q51.
What are the advantages of fertigation in agriculture? 1. Controlling the alkalinity of irrigation water is possible. 2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible. 3. Increased availability of nutrients to plants is possible. 4. Reduction in the leaching of chemical nutrients is possible. Select the correct answer using the code given below:
Answer
C
Explanation
Fertigation has some specific advantages over broadcast and band fertilization: (1) A frequent supply of nutrients reduces fluctuation of nutrient concentration in soil. (2) There is efficient utilization and precise application of nutrients according to the nutritional requirements of the crop. (3) Fertilizers are applied throughout the irrigated soil volume and are readily available to plants. (4) Nutrients can be applied to the soil when soil or crop conditions would otherwise prohibit entry into the field with conventional equipment. The pH of the irrigation water is of great importance, as it affects many chemical reactions. In fertigation, the reasons for adjusting the pH to an optimal range are: 1. To allow optimal uptake of nutrients,