Improvement of cassava cultural practieces
1990
Piyawuti Poolsanguan | Chareinsak Rojanaridpiched | Jumlong Jeamjamnanja (Sriracha Research Station, Chon Buri (Thailand))
Study on cassava varieties and harvesting times for yield and quality of cassava. There was no significant differences in fresh root yield comparing among varieties, except in February planting. Rayong 60 tended to have the highest fresh root yield while Sriracha 1 gave higher the starch content and dry root yield. During rainy season, increased the harvesting times of cassava from 8 to 14 months would increased the yield. Interactions between varieties and harvesting times of fresh and dry root yield were not detected, except for the starch content. Furthermore, planting in November gave higher yield than planting in February and June. Study on the response of nes cassava varieties to chemical fertilizers. There was no significant difference in fresh root yield only in the dry season planting. Rayong 60 tended to have the highest fresh root yield while Sriracha 1 gave higher the starch content. Furthermore, Sriracha 1, generally gave higher fresh root yield than those of other varieties under unfertilized soil. In the dry season planting, average yield increased by fertilizer at the rates of 50, 100 and 150 kg/rai were 7, 15 and 21 percent and were 10, 35 and 42 percent for the rainy season planting, respectively. The highest response of cassava to rates of mixed fertilizer was obtained at 100 kg/rai. In addition, interactions between variety and fertilizer rate of fresh and dry root yield as well as the starch content were not observed.
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