... plants, and vinesØ To prevent premature flower and fruit drop in apples, pears, grapes, guavas, mangoes, water melons, pawpaws, citrus ... ,citrus,and other fruit,Ø And to induce flowering in pineapples. Widely used in agriculture, forestry, vegetable, flower, fruit etc. ... tissue culture, can prevent premature flower and fruit drop in fruit and other crops, improve the setting flowering. Naphthalene ...