EFFECTS OF APPLICATION OF INDOL BUTYRIC ACID, GIBBERELLIC ACID AND ZINC ON GROWTH, YIELD AND QUALITY OF TOMATO

Abstract

The growth, yield and quality of tomato largely depend on soil and climatic conditions and also on variety. Among these, proper application of plant growth regulators and Zn plays a vital role. The field experiment was conducted at Sher-eBangla

Agricultural University Farm, Dhaka, Bangladesh during October 2017 to April 2018 to evaluate the effect of foliar application of IBA, GA and Zn on yield and quality of tomato. Single variety BARI Tomato-14, and foliar application of IBA 5ppm, GA 3 3 5ppm and Zn were used to conduct this experiment. The experiment was laid out in a Randomized Complete Block Design (RCBD) having single factor and replicated three times. Data were collected on plant height, number of leaves plant , number of branches plant -1 , Leaf Area Index(LAI), chlorophyll content of leaf, number flowers cluster pant -1 , number of fruit plant -1 , weight of fruit, yield hectare , Vitamin-C content and TSS% content. A statistically significant variation was recorded in terms of all the characters related to growth and yield quality of tomato. The maximum plant height, number of branches plant -1 , length of branch respectively 103.03 cm at 90 DAT, 65.70 at 90 DAT, 13.11 at 90 DAT was observed in treatment of T 7 (IBA 5ppm+GA 5ppm+Zn). The minimum plant height, number of branches plant -1 3 , length of branch respectively 85.24 cm at 90 DAT, 47.88 at 90 DAT, 10.33 at 90 DAT was observed in treatment of T (control). The maximum number flowers cluste plant -1 0 20 at 90 DAT in treatment both T 7 (IBA 5ppm+GA 5ppm+Zn) and T 4 (IBA 5ppm+GA 3 5ppm) and number of fruit plant -1 3 160 at 90 DAT was observed by treatment of T 7 (IBA 5ppm+GA 5ppm+Zn). The minimum number flowers cluster plant -1 3 8.89 at 90 DAT in treatment both T 0 (control) and number of fruit plant

60.00 at 90 DAT was observed by treatment of T (control). The maximum yield of fruits hectare -1 0 (100 tones) was obtained from treatment of T (IBA 5ppm+GA 3 5ppm+Zn). The lowest yield of fruits hectare -1 (58 tones) was obtained from treatment of T (Zn).

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