Study on Changes in Physiological Parameters and Yield with the Application of N-ATCA (Elanta super)y GA3 and CPPU in Sonaka grapes

摘要

Elanta Super is a organic growth promoter which contains N Acetyl Thiazolidine 4- Carboxylic Acid (N-ATCA), 10% Folic acid with 0.2% adjuvant, used for plant growth increase in both fruit & production quality. It also enhances quality, luster, brix, elongation and size of berry, keeping quality and taste of table grapes. Therefore, the current study aims to see the mechanism and changes due to Elanta Super spraying along with GA3 and CPPU on quality, photosynthesis and yield in Sonaka grapes. Field experiment was conducted during 2013-14 in Sonaka grapes at location Tasgaon, Sangli, Maharashtra, India. The experiment was laid in randomized block design with five treatments during fruiting seasons. Grapes bunches were sprayed with Elanta Super, GA3 and CPPU at 45, 75 and 90 DAP (days after pruning) with different treatments Tl (0.25 ml Elanta Super + 15 ppm GA_1), T2 (0.50 ml Elanta Super +15 ppm GA3), 13 (1 ml Elanta Super + 15 ppm GAj), T4 (1 ml Elanta super + 15 ppm GAj+l ppm CPPU) and (T5 control).Berry length, berry diameter and berry skin thickness were derived by averaging the 10 berries randomly from each treatment and measured using vernier caliper (RSK, China) and expressed in millimetre (mm). Berry skin thickness was measured using micro screw gauze (No. 103-101-10, Mitutoyo, Japan) and expressed in micrometer (um). The mean bunch weight was derived by averaging the weight of ten bunches randomly from each treatment. Total soluble solids and acidity were derived by the juice of 50 berriesrandomly from each treatment and measured by hand refractometer (EKMA INC, Tokyo, Japan) and Acid-base titration methods, respectively. Total soluble solids (TSS) were expressed in degree brix (°P) and acidity was expressed in percentage (%). The leaf area (cm2) was measured using leaf area meter (model CI- 203 Leaf area meter, CID, Inc. USA).The fully mature leaf was used for total chlorophyll quantification by DMSO method, Jifon et al. [4].