Tropical & Subtropical Fruits

Flowering and fruitset

• Flower bud formation takes place 2-3 months prior to flowering.
• Flowering occurs from Nov-Dec to Feb-Mar depending upon locality and variety and continues for about 2-3 weeks.
• Flowers are polygamous-sex ratio can be improved by application of NAA 200ppm at flower bud initiation stage.
Fruit drop

Fruit drop is natural and is very high in mango specially during the first four weeks.
1. Soon after flower opening
2. After pollination and fertilization
3. At grain stage of the fruit.

This occurs as an adjustment to the resources available in the plant for the development of fruits and is natural. Drop of grownup fruits is a major problem.
This may be due to competition between developing fruits, drought or lack of irrigation, adverse weather conditions and incidence of serious pests and diseases.
This can be avoided by regular irrigations during fruit development, application of optimum doses of nutrients effective control of pests and diseases and some hormonal sprays like 2, 4-D (10-30 ppm) NAA (5-50 ppm), 2,4,5-T (20 ppm) etc.,