Effect of Maleic Hydrazide (.MH) and Isopropyl N-(3-Chlorophenyl) Carbamate (C'lPC) on Sprouting of Potato Tubers during Storage

Abstract

Potato cultivars treated with MH 2000 ppm 4 weeks before harvest varied in their sprouting. Famosa and Reflecta cultivars that had large foliage at time of spray, sprouted least during storage at 5 C and 80-90",, r.h. Tubers from untreated plants sprouted profusely after 3 months of storage. Supplementary treatment with Luxan (as vapour) and Tixit (as dusting), after 6 months of storage, extended the dormancy in tubers up to more than 10 months storage at 5 C. MH plus Luxan-treated tubers were fresher than those treated with MH alone, or MH plus Tixit. Tubers from plants treated with MH showed 40 96°„ sprouting depending on cultivars, as compared to zero sprouting in tubers from most cultivars treated with Luxan or Tixit during storage.