01 May Physiological disorders of 7 major fruit crops and their management.
7 प्रमुख फल फसलों के कायिक विकार तथा उनका प्रबंधन। Disturbance in the plant tissue metabolic activity and environmental variables like temperature, light, aeration and nutritional imbalances resulting disorders in the fruit crops. In fruit crops, the deficiency of micro-nutrients just like Zn, Bo, Mn causes many more disorders than that of macro-nutrients. 1. Physiological disorders of Mango: Spongy Tissue in Mango: It is a major problem in Alphonso, It is a physiological disorder in which fruit pulp remains unripe because of unhydrolyzed starch due to physiological and biochemical disturbances because of high temperature, convective heat and post harvest exposure to sunlight. Management: Use of mulching and post harvest exposure to low temperatures between 10-15 C for 10-18 hours has been useful in reducing the malady. Biennial Bearing in Mango: This is one of the most burning problems since it renders mango cultivation less remunerative to the growers. Biennial bearing is also known as alternate bearing. It indicates yield variations in alternate years i.e. an year of optimum or heavy fruiting followed by a year of little or no fruiting. The problem of biennial bearing is a varietal character governed by genetic makeup, and this tendency starts exhibiting in mango plant even at the second year of fruiting and become more serious as the age advances. Management : Proper upkeep and after ...