Effect of NAA and mulching on fruit drop in mango (Mangifera indica) cv. Kesar in semi-arid ecosystem Kumar Raj1, Lata K2, Khadda B S1, Jadav J K1, Rai A K, Singh S3 Krishi Vigyan Kendra, Panchmahals, Central Institute of Arid Horticulture (CIAH), Vejalpur-Godhra, Gujarat, 389 340 1SMS (Hort.) 2Programme Coordinator, KVK, Panchmahals, Godhra-Baroda-Highway, Vejalpur, Ta.-Kalol, (Gujarat) 389 340 3Head and Principal Scientist, CHES, Vejalpur, (Gujarat) Online published on 21 March, 2016. Abstract An experiment was conducted to find out the effect of NAA and mulching on fruit drop in mango (Mangifera indica L.) cv. Kesar under semi-arid ecosystem at Krishi Vigya Kendra, Panchmahals, Central Institute of Arid Horticulture, Vejalpur-Godhra, Gujarat, during 2010–11 and 2011–12. The causes of fruit drop are non-pollination and fertilization, competition between developing fruits and hormonal imbalance. The application of irrigation, NAA and grass mulching alone or in combination reduced the fruit drop in mango considerably. The maximum number of panicles (174.28/plant), hermaphrodite flowers/panicle (28.24), initial fruits set per panicle (5.10), number of fruits/panicle at harvesting (0.95) and yield/plant(27.25 kg) were recorded in T3 (irrigation at 15–20 days interval + two sprays of NAA@ 20 ppm at first week of February and first week of April + grass mulching). Top Keywords Mango, Fruit drop, NAA, Mulching, Auxin, Hormonal imblance. Top |