questions: askin g about the nutrient management and insect in mango. 
 answers: suggested to spray naa @ 20 ppm is sprayed at flowering to increase the fruit retention.during february 0.5% urea (5gm/lt of water)or potassium nitrate (10gm/lt of water)may be induce flowering,if trees do not flower by that time.spraying of 2% kno3 at mustard size will increase the fruit set and retention of fruit.