Control of wilt disease of tomato grafted on resistant rootstocks
2007
Kajihara, H.(Yamaguchi-ken. Agricultural Experiment Station (Japan)) | Ooi, Y. | Nishimi, K.
Bacterial wilt diseases caused by Ralstonia solanacearum and crown and root rot of tomato caused by Fusarium oxysporum f. sp. Radicis-lycopersici have become problem in tomato-growing area in Yamaguchi prefecture. Use of the resistant rootstock cultivar such as 'B-barrier' was found effective measure for controlling wilt diseases. However, if the density of causal bacteria were more than 10E4 CFU/g the 'B-barrier' as rootstock was not enough for controlling the diseases. Combination of microbial pesticides such as 'Serunae-Genki' and additives containing microorganisms were used to improve the efficacy of controlling the diseases. In the case of high density of the causal bacteria (10E5 CFU/g), grafting above second true leaf on the rootstock cultivar could improve the efficacy of control.
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