EFFECT OF MELATONIN AND Β -AMINO BUTYRIC ACID (BABA) AGAINST THE FUNGUS BOTRYTIS CINEREA GROWTH AND YIELD IN STRAWBERRY
Y. M. Ahmed | J. M. Abed
The study was conducted at the College of Agriculture, University of Anbar, Department of Plant Protection, during the 2021-2022 season to investigate the effect of melatonin and amino butyric acid on the growth and yield of strawberry plants infected with the fungus Botrytis cinerea and their effect on the chlorophyll concentration level in the plant. The results showed the superiority of using melatonin at a concentration of 200 mg L-1 and BABA at a concentration of 2000 mg L-1 by both preventive and curative methods on the yield. The highest values were recorded in the number of flowers: 30.53 and 27.23 flower plant-1 compared to the control (14.10 flower plant-1) sequentially by the preventive method, and in the percentage of fruit set: 78.33% and 75.5% compared to the control (37.8%) sequentially by the preventive method. The number of healthy fruits was 26.80 and 20.86 fruits plant-1 compared to the control (17.8 fruits plant-1) sequentially by the preventive method. The number of infected fruits was 20.32 and 17.17 fruits plant-1 compared to the control in the presence of the pathogen (46.72 fruits plant-1) sequentially by the curative method. The total weight of the fruits was 617.8 and 503.9 g plant-1 compared to the control (413.4 g plant-1) sequentially by the preventive method. In estimating the chlorophyll level, the BABA and melatonin treatments achieved the highest percentages: 61.27 and 59.48 SPAD units compared to the control (51.57 SPAD units) sequentially by the preventive method.
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