Dharmendra Kumar, Satya Prakash, Arvind Kumar, Shubham Yadav, Sachin Kumar Singh, Prasoon Kumar Rai, Niharika Gurudev, Atul Kumar Rawat, Amit Kumar Singh, Antriksh Deshwal and Yashmi Yadav
Abstract
The present investigation was carried out during 2023-24 and 2024-25 at the Horticultural Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut (U.P.), India, to assess the impact of various concentrations and combinations of plant growth regulators (PGRs) on the quantitative attributes of lemon (Citrus limon Burm.) cv. Pant Lemon-1. The experiment was structured using a Randomized Block Design (RBD) comprising 19 treatments replicated three times. The key quantitative parameters evaluated included fruit setting percentage, number of mature fruits, fruit diameter, fruit length, individual fruit weight, and yield per tree. The results indicated significant variation among treatments across all measured traits. Notably, the combined application of GA3 at 60 ppm and NAA at 20 ppm (Treatment T15) emerged as the most effective, recording the highest fruit set (3.16%), fruit diameter (5.63 cm), fruit length (5.85 cm), individual fruit weight (105.67 g), and fruit yield (22.79 kg/tree). Although the number of mature fruits was marginally lower in this treatment compared to the control, the overall improvements in yield and fruit quality were substantial. These findings underscore the potential of optimized PGR combinations to enhance the productivity and commercial value of lemon cultivation under the subtropical agro-climatic conditions of Western Uttar Pradesh.