Studies on the comparative behaviour of different treatments for the control of malformation in mango (Magnifera indica L.) blossoms.
Braj Mohan, Satya Prakash
Author Affiliation: Department of Horticulture, S.V. Patel University of Agriculture and Technology, Meerut (U.P.), India.
International Journal of Agricultural Sciences 7 : 295-299
Abstract : In order to find out the most effective control measures of malformation, an experiment was carried out for two years, with a view to study the comparative behaviour of different treatments for the control of malformation in Amrapali mango blossoms. Results revealed that of all the treatments applied in the study, exogenous application of NAA 200 ppm in the first fortnight of October (before bud break stage) and deblossoming at bud burst stage was found to be the most effective treatment (-64.63% reduction over control) than NAA application alone without deblossoming, shoot pruning, acaricide application and stalk pruning for reducing the incidence of floral malformation and improving the fruit yield and quality of 'Amrapali' mango under the climatic conditions of Western Uttar Pradesh. The treatments, namely, NAA application alone without deblossoming (-57.91% reduction over control) and pruning of 20 cm shoot bearing malformed panicle in January (-55.10% reduction over control) were the next best ones in suppressing the disorder. The deblossoming alone without NAA application or NAA application alone without deblossoming and shoot pruning treatments did not prove better than deblossoming in combination with NAA in reducing the incidence of malformation. Among the treatments of shoot pruning, moderate pruning of shoot (20 cm) bearing newly emerged malformed panicle at early stage of panicle emergence was found to be more effective than other treatments of shoot pruning in suppressing the incidence of malformation which is usually very high in early emerging flower buds and panicles.