Phalsa (Grewia asiatica L.) is an important minor fruit crop valued for its refreshing fruits, but its productivity and fruit quality are often constrained by limited systematic management of plant growth regulators. To evaluate the effects of foliar sprays of Naphthalene Acetic Acid (NAA) and Gibberellic Acid on the growth, flowering, yield and quality of phalsa (Grewia asiatica L.), a field experiment was conducted at the Garden, Department of Fruit Science, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.), during 2025-26. Ten treatments comprising NAA at 50, 75 and 100 ppm, GA₃ at 100, 150 and 200 ppm, three NAA + GA₃ combinations (50+100, 75+150 and 100+200 ppm), and one control (water spray) were evaluated in a randomised block design with three replications. Sprays were applied to uniformly maintained, regularly pruned sixty-five-year-old bushes that received the recommended dose of plant nutrients throughout the investigation period. Among all treatments, T₇ (50 ppm NAA + 100 ppm GA₃) was consistently the most effective, recording the maximum bush height (177.46 cm), number of shoots per bush (134.0), number of leaves per shoot (24.70), number of flowers per shoot (160.70), fruit yield per plant (3.05 kg), fruit diameter (1.14 cm), hundred-fruit weight (83.25 g), pulp weight (72.80 g) and pulp:stone ratio (6.97), together with the minimum number of days to flowering (35.37 days) and the lowest stone weight (10.45 g). T₇ also produced fruit of superior biochemical quality, with the highest total soluble solids (25.10 °Brix), reducing sugars (9.10%), non-reducing sugars (2.17%) and total sugars (11.27%), along with the lowest titratable acidity (2.51%). The results indicate that a combined foliar spray of 50 ppm NAA and 100 ppm GA₃, applied once before flower-bud initiation, can be recommended for improving growth, earliness of flowering, yield and fruit quality of phalsa cv. Sharbati under the agro-climatic conditions of the Indo-Gangetic plains of Uttar Pradesh.
R. Sonkar, V. K. Tripathi, S. Verma et al.· Asian Journal of Soil Scienc...· 0 citations
An experiment was carried out in the Horticulture Garden of C. S. Azad University of Agriculture and Technology, Kanpur (U.P.) during 2023, using nine treatments viz., GA3 at 20 and 50ppm, NAA at 15 and 30ppm along with their combinations including a control (water spray) on twenty-six years old plant of aonla cv. NA-7 replicated thrice in Randomized Block Design. From the experiment, it is reported that higher concentration of GA3 @ 50 ppm + NAA @ 30 ppm significantly reduced fruit drop (18.84%) and increased fruit retention (81.16%). It also gave maximum fruit yield (211kg/plant), increased fruit length (3.74cm), fruit width (4.97cm), fruit weight (30.02g), fruit volume (27.79cc), specific gravity (1.08g/cc), pulp weight (28.68g) and maximum pulp: stone ratio (21.41). Plants treated with GA3 @ 50ppm + NAA @ 30ppm also resulted in an increase in ascorbic acid (605.49mg/100g), TSS (12.150Brix) and total sugar (9.81%) content. GA3 @ 50ppm + NAA @ 30ppm significantly reduces the stone weight (1.34g) and acidity (1.72 %) under the plains of northern India.
Ayushi Shrivas, V. K. Tripathi, Akhilesh Mishra· Progressive Agriculture· 0 citations
An experiment was conducted during 2025 at the Department of Fruit Science, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.), to assess in the enhancement of yield and quality attributes of litchi through the foliar application of NAA, Boron, and Zinc Sulphate. Nine treatments comprising two concentrations of NAA (40 and 60 ppm), three concentrations of boron (0.4, 0.6, and 0.8%), three concentrations of ZnSO4 (0.6, 0.8, and 1.0%), and one control were evaluated in a Randomised Block Design with three replications. Foliar sprays were done twice, once before flowering and again at the pea stage of fruit development. Significant differences were observed among treatments. NAA @ 40 ppm recorded highest fruit set (57.46%), lowest fruit drop (61.28%), and highest fruit retention (33.82%). However, Boron @ 0.6% proved superior in improving fruit quality and yield by recording minimum fruit cracking (7.95%), maximum fruit length (4.62 cm), fruit diameter (3.90 cm), fruit weight (20.00 g), pulp weight (16.42 g), TSS (22.55 °Brix), total sugars (18.52%), vitamin C (25.36 mg/100 g), pulp: stone ratio (5.97) and fruit yield (25.31 kg plant-1), with minimum seed weight (2.75 g) and titratable acidity (0.35%). Therefore, a foliar application of boron at 0.6% is recommended to improve yield and quality of litchi cv. Dehradun under the plains of northern India.
Shivani, V. K. Tripathi, Akhilesh Mishra· Progressive Agriculture· 0 citations
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