Management study on seed potato production using two alternative planting materials under greenhouse condition
1997
Khatri, B.B. | Ganga, Z.N. (Potato Research Program, Khumaltar, Lalitpur (Nepal))
This study was conducted in response to the costly and often unavailable seed tubers for growing potatoes. Microtubers and minitubers were used as alternative planting materials of varieties 'Granola' and 'Montanosa.' Results showed that the tuberlet size significantly affected plant height and canopy cover. Larger the tubers planted, the higher the percentage emergence and more number of main stems per plant counted. The number and weight of tuberlets produced were also highly dependent on the size of the micro and minitubers planted. The bigger the tubers planted, the larger were the tuberlets produced. Higher number of tuberlets were obtained from closer spacings. Planting small tubers generally resulted in higher multiplication ration of smaller tuberlets, but required careful management. Findings indicate that the minitubers rather than microtubers should be provided to the farmers as the basic planting material at least where the farmers need clean seed stock and cannot afford proper management of delicate materials. Tuberlet production under greenhouse condition is particularly more suitable and important as the planting materials than the microtubers and stem cuttings which are provided directly to the farmers. Minitubers produced may thus reduce the risk of poor crop establishment and favors better crop stand in the farmers' field.
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