The present investigation entitled “Effect of plant growth regulators on flowering, fruit set, yield of acid lime (Citrus aurantifolia Swingle) Kuliana local”. This research was conducted at Horticultural Research Station, Department of Fruit Science and Horticultural Technology, Orissa University of Agriculture and Technology, Bhubaneswar, during 2019- 2020 and 2020-21 to evaluate the suitable growth regulator in terms of fruit yield and yield attribute parameters. Results showed that application of growth regulators like 2,4-D (2,4-D at 10 ppm and 20 ppm), GA3 (GA3 at 50 ppm and 100 ppm), NAA (NAA at 100 ppm and 200 ppm), SA (SA at 100 ppm and 200 ppm), Spermidine (Spermidine at 0.01 ppm and 0.5 ppm), Putrescine (Putrescine at 0.01 ppm and 0.5 ppm), Brassinosteroid (Brassinosteroids at 0.1 ppm and 0.5 ppm) and control on yield attributes of acid lime kulianalocal. The yield and yield attributing observations on various yield attributes were recorded in same seasons in both years. The best growth regulator for fruit yield has determined on the basis of growth regulators performances as growth regulators variation has tremendous effect for yield of fruit. Brassinosteroids showed the best effect for number of flowers per shoot (20.17), Fruit set (93.68 per cent), Fruit retention (25.94 per cent ), Fruit drop (74.06 per cent), number of fruits per tree (490.36), Kg/tree (16.26), fruit weight (33.11 gm), fruit length (5.06 cm), fruit diameter (4.36 cm) with the other treatments including the untreated fruits in both seasons of the study. Our results illustrated that the BR was gave best results in yield attributes for Kuliana lime.

Agrochemicals, foliar application, yield attributes, fruit set, fruit drop

It is concluded on the basis of overall performance of treatments on yield characters of fruits, it can be concluded that the values for the number of flowers per shoot, number of fruit set, fruit retention and decreased fruit drop percent, maximum number of fruits per tree, Kg per tree, fruit weight, length, diameter have been obtained maximum while the minimum fruit drop was recorded with BR @ 0.5 ppm of acid lime during both seasons.

Sarada P., Sahoo A.K., Sahoo S.C., Das S.N., Panda R.K. and Dash A. (2022). Enhancing Cropping by Agro Chemicals Spraying of Kuliana Local. Biological Forum – An International Journal, 14(3): 1702-1706.