Management of Bacterial Wilt Using Grafting Technique in Tomato (&lt;i&gt;Ralstonia solanacearum&lt;/i&gt;)

Sudeep Pandey,Suchit Shrestha,Utsav Koirala,Prabin Acharya

doi:10.12691/wjar-8-4-4

Abstract

Tomato farmers have been facing a major threat of entire crop loss because of bacterial wilt of tomato. Grafting of highly productive scion onto resistant rootstock is one of the best methods to prevent crops from bacterial wilt disease. An experiment was conducted using tomato (RS-101) and eggplant (KER-DC-117) rootstocks grafted with six scion varieties in different combinations to make total of nine treatments replicated three times in completely randomized design in the naturally infected farmer’s fields at Dahachok, Nepal in 2019. All the three treatments with eggplant rootstock (KER-DC-117) were found to be resistant. Karma 777, Shrijana and Samjhana scions grafted onto tomato rootstock (RS-101) were moderately resistant, whereas Sarita and Karma 555 grafted onto tomato rootstock (RS-101) were moderately susceptible. Non-grafted Sarita was highly susceptible with 100% disease incidence. There were no bacterial browning and bacterial oozing in treatments with tomato rootstock (RS-101). The yield and number of fruits was maximum with Karma 444 grafted onto eggplant rootstock (KER-DC-117). So, Karma 444 + ER (KER-DC-117) is the best scion-rootstock combination to manage bacterial wilt against tomato at Dahachok, Kathmandu.

Highlights

Tomato (Solanum lycopersicum L.) is an important contributor in world vegetable production
On 40 DAT, the death of plants with tomato rootstocks were observed and the disease incidence was increased in non-grafted Sarita
No disease incidence was observed in treatments with Karma 444 + eggplant rootstock KER-DC-117 (ER)

Summary

Introduction

Tomato (Solanum lycopersicum L.) is an important contributor in world vegetable production. The vegetable cultivated area and production in Nepal has increased in year 2018/2019 (297,195 h and 4,271,270 ton) [1]. Tomato is one of the most important vegetables contributing to increasing numbers of area and production of vegetables in Nepal. Despite the increase in area and production, it is still insufficient to meet the increasing demands within the country. There are more than one reasons behind insufficient production in the farmers’ field. The weeds, insects, and plant diseases are major constraints to the potential tomato yield by 36% and disease alone assist 14% of total [2]. Increase in commercialization and intensive tomato farming system invites different types of diseases

Methods

Results

Discussion

Conclusion