STUDIES ON YIELD CONTRIBUTION AMONG GRAFTED AND NONGRAFTED SUMMER TOMATO SEEDLINGS

Abstract

An experiment was conducted at vegetable research farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur in the year 2019 to assess the resistance level of rootstocks against Bacterial wilt and to evaluate grafting compatibility, seedling survivability, plant stand, growth, development, and yield at field condition for summer tomato production. Six wild rootstocks were taken to study the resistance against Bacterial wilt and most yielding rootstock respectively and BARI hybrid Tomato-8 was grafted on to six rootstocks having practiced with Integrated Pest Management approaches for evaluating field performance. The experiment consisted of following seven treatments, T 1 = WSS02 (Tomato grafted onto S. sisymbriifolium) T 2 = WSM05 (Tomato grafted onto S. torvum) T 3 ii

= WSM06 (Tomato grafted onto khag-1) T 4 = WSM07 (Tomato grafted onto Khag-2) T 5 = WSM08 (Tomato grafted onto Khag

3)

T 6 = WSM04 (Tomato grafted onto EG 203) T 0 = BARI Hybrid tomato-8

(Control). Two rootstocks were showed resistant against Bacterial wilt and yield

showed better than control as well as any other treatments. T 1 (WSS02-S.

sysimbriifolium) & T2(WSM05 S. torvum) found to be the best where higher yield was obtained from the treatment T2(WSM05 S. torvum) (34 ton/h) and

T 1 (WSS02-S. sysimbriifolium) (29 ton/h). Therefore, tomato may be grafted onto

S. torvum for higher yield & least wilt infestation. Thus, it may be suggested for better yield and safe tomato production in the wilt prone areas of Bangladesh during summer.