Standardization of Cassava Leaf Harvest in Relation to Ericulture cum Tuber Production
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 6, Issue 5
Abstract
Quantum of cassava leaf harvest for rearing of eri silkworm (Samia cynthia ricini Boisduval) without adverse impact on tuber yield and starch content was standardized with seven popular varietiesviz., CO2, CO3, CO4, H165, H226, MVD1 and Kunguma Rose under irrigated conditions of Tamil Nadu, India. The rearing capacity was also estimated based on the availability of total foliage at the time of removal of weak shoots, 6 months after plantation (MAP), forced leaf harvest in 7-9 MAP without affecting tuber yield and starch content and finally at the time of tuber harvest (10 MAP). The forced leaf harvest in monthly intervals @ 3 harvests in 7, 8 & 9 MAP strongly affected tuber yield and starch content of the tubers in all varieties irrespective of percentage of leaves plucked. However, the forced leaf harvest up to 30% in bimonthly interval i.e. once at 8 MAP did not affect the tuber yield and starch content of the tubers in the varieties MVD1, H226, and CO4. The varieties Kunguma Rose, CO3 and H165 could tolerate leaf plucking up to 20% whereas CO2 was found highly sensitive in which leaf harvest @ 10% only found safe on yield and quality of main produce. Highest foliage yield and rearing capacity of eri silkworm were recorded with MVD1 without affecting yield and quality of the tuber. The variety H226 was found next best suited. The order of merit of cassava varieties in view of ericulture cum tuber production was MVD1>H226>CO4>Kunguma Rose > CO3> H165>CO2. The high leaf yielding varieties like MVD1, H226 and CO4 under irrigated conditions could successfully be exploited for production of eri silk in order to generate additional income to the cassava growers.
Authors and Affiliations
N. Sakthivel, et al.
Keywords
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