GROWTH AND YIELD OF TOMATO AS INFLUENCED BY SEEDLING AGE AND IAA

Abstract

An experiment was conducted at the Horticulture farm of Sher-e-Bangla Agricultural University, Dhaka, during the period from November 2014 to April 2015 to study the growth and yield of tomato as influenced by seedling age and Indole-3-Acetic acid. The experiment was laid out in a Randomized Complete Block Design with three replications and consisted of two factors, Factor A( 3 different age of seedling): S 1 =25 , S 2 ii

= 30 , S 3 = 35 days old seedling respectively and Factor B (4 levels of IAA): I 0 = 0 ppm, I 0 = 0 ppm, I 1 = 80 ppm I 2 = 100 ppm, I 3 = 120 ppm. The highest value in plant height (99.75 cm), weight of fruit (91.84 g), dry matter percentage of fruit (11.12%), length of root (37.83 cm), chlorophyll percentage of leaf (53.71%), carbon assimilation rate (11.32%) and yield of fruit (80.50 t/ha) were recorded from S 1 treatment and lowest value was found in S 3 . In case of IAA, The highest value in plant height (88 cm), weight of fruit (91.12 g), dry matter percentage of fruit (11.72%), length of root (34.89 cm), chlorophyll percentage of leaf (56.04%), carbon assimilation rate (9.87 %) and yield of fruit (80.19 t/ha) were recorded from I 1 treatment and lowest value was found in I 0 .. The treatment combination of S 1 I produced the highest value in plant height (108 cm), weight of fruit (110 g), dry matter percentage of fruit (12.17 %), length of root (43.01 cm), chlorophyll percentage of leaf (57.93%), carbon assimilation rate (12.55%) and yield of fruit (94.05 t/ha) and the S 1 3 I produced the lowest value in growth and yieldcharacteristics. So, 25 days old seedling and 80 ppm IAA combination was found suitable for growth and yield of tomato.