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Evaluation of shoot inducers in cherimoya (Annona cherimola mill.) in Tababela, Ecuador

Abstract:

Shoot inducers were evaluated in cherimoya (Annona cherimola Mill.) in Tababela, Ecuador in 1998, with the aim of regulating and increasing shoot percentage and facilitating essential crop activities (pruning, phytosanitary measures, hand pollination, harvesting), and improving productivity . Dormex (alzodef) at 1 and 2 % and Dropp (tidiazuron (TDZ)) at 200 and 300 ppm were applied with and without oil (O) after manual defoliation. At 20 days after treatment (DAT), treatments T5 (200 ppm TDZ) and T4 (2 % Dormex + 2 % O) showed more than 70 % of buds with shoots, compared to the control with 50 %. Fruit set was evaluated at 115 DAT, with treatment T3 (2 % Dormex) standing out with 34.5 % while the control showed 18 %. In general the chemical treatments had a positive effect on shoot growth and fruit set, and the technique may be a valid alternative.