PJB-2019-328
EFFECT OF CHITOSAN ON PERFORMANCE OF TOMATO PLANT UNDER WATER STRESS CONDITION Hassnain and Mehbob Alam Department of Horticulture Faculty of Crop production Sciences The University of Agriculture, Peshawar-Pakistan February, 2019 ABSTRACT In thi
Hassnain
Abstract
EFFECT OF CHITOSAN ON PERFORMANCE OF TOMATO PLANT UNDER WATER STRESS CONDITION Hassnain and Mehbob Alam Department of Horticulture Faculty of Crop production Sciences The University of Agriculture, Peshawar-Pakistan February, 2019 ABSTRACT In this study we investigate the “effect of chitosan on performance of tomato plant under water stress condition” was performed at Horticulture Nursery, Department of Horticulture, The University of Agriculture Peshawar, Pakistan during 2018. The experiment was laid out in Completely Randomize Design (CRD) having two factorial arrangements and replicated three times in control (Glass house) environment. Tomato fruit were subjected manually with different concentration of chitosan (0, 50, 100,150 mg L-1). Various water stress intervals (3, 6, 9 and 12 days) were given to tomato plants from 15 days after transplantation. Tomato cultivar (Rio Grande) was used. Data were collected on different growth, yield and qualitative attributes of tomato. Results showed that various application of chitosan and water stress interval had a significant effect on almost all studied parameter. Tomato plants treated with 6 days water stress interval presented maximum average plant height (82.69 cm), average number of leaves (104.02), leaf area (81.47 cm2), chlorophyll content (71.31 SPAD), relative water content (67.27%), excided leaf water retention (68.24%), number of fruit plant-1(24.66), average fruit weight (73.718 g), yield (37.50 ton ha-1), fruit firmness (3.77 kg cm-2), fruit juice content (62.04%), total soluble solids (4.76), minimum fruit juice pH (5.37), maximum titratable acidity (0.49%) and ascorbic acid content (23.52 mg 100g-1) were recorded, while minimum average plant height (65.93 cm), average number of leaves (82.79), leaf area (67.36 cm2), chlorophyll content (51.30 SPAD), relative water content (41.50%), excised leaf water retention (60.67%), number of fruit plant-1 (15.33), average fruit weight (59.95 g), yield (24.92 ton ha-1), fruit firmness (2.58 kg cm-2), fruit juice content (43.68%), total soluble solids (3.92) maximum fruit juice pH (5.39) were noted in 12 days water stress interval, whereas minimum titratable acidity (0.41%), and ascorbic acid (21.43 mg 100g-1) were recorded in plants treated with 3 days water stress interval. Foliar application of chitosan at the rate of 100 mg L-1 shows maximum average plant height (80.74 cm), average number of leaves (104.19), leaf area (81.05 cm2), chlorophyll content (72.29 SPAD), relative water content (66.82%), excised leaf water retention (66.58%), fruit plant-1 (24.33), average fruit weight (74.74 g), yield (37.37 ton ha-1), fruit firmness (3.94 kg cm-2), percent juice content (57.56%), minimum fruit juice pH (5.33), maximum total soluble solid (4.89 0Brix), titratable acidity (0.51%) and ascorbic acid content (25.35 mg 100g-1) were recorded, while minimum average plant height (71.13 cm), average number of leaves (88.00), leaf area (68.64 cm2), chlorophyll content (54.77 SPAD), relative water content (49.26%), excised leaf water retention (63.15%), fruit plant-1 (16.50), average fruit weight (62.75 g) , yield (27.80 ton ha-1), fruit firmness (2.72 kg cm-2), fruit juice content (52.69%), total soluble solids (3.63), maximum fruit juice pH (5.46), minimum titratable acidity (0.39%) and ascorbic acid (19.85 mg 100g-1) content were observed in untreated plants. It is concluded that 100 mg L-1chitosan application along with 6 days water interval had positive impact on growth and quality of tomato.
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