Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

DEVELOPMENT OF INTEGRATED MANAGEMENT PACKAGE FOR BLACKLEG OF POTATO AND EVALUATION OF POTATO VARIETIES FOR RESISTANCE TO BACTREIAL SOFT ROT CAUSED BY PECTOBACTERIUM CAROTOVORUM SUBSP. CAROTOVORUM (Pages : 13 - 19)

To develop an integrated management package for the management of potato blackleg disease, chitosan (3% and 5%) combined with of gypsum (CaSO4) fertilizer (3g/3kg soil and 5g/3kg soil) and Trichoderma harzianum BTH-N1 (10g/kg tuber seed) were tested in pothouse trials in the division of Plant Pathology, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh. BARI Alu 7 (Diamant) was used as the test variety T. harzianum BTH-N1 reduced blackleg severity compared to the non-treated control when applied alone or in combination with chitosan (3%) or gypsum (3g/3kg soil). The highest level of disease reduction was recorded in chitosan 3% + T. harzianum BTH-N1 treated plants. Ten BARI-released potato varieties showed different levels of reactions to soft rot causing bacterium strain Pectobacterium carotovorum ssp. carotovorum Pki2 in artificial tuber inoculation. BARI Alu 25 was the resistant to soft rot, BARI Alu 72 and BARI Alu 41 were the susceptible. Calcium (p<0.05) content but not dry matter percentage of tubers was correlated with soft rot severity of the tested potato varieties. Download