ENHANCING WATER PRODUCTIVITY IN MULBERRY AND COCOON PRODUCTION IN EASTERN DRY ZONE OF KARNATAKA
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Date
2015-08-06
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Field experiment entitled “Enhancing water productivity in mulberry and cocoon
production in Eastern Dry Zone of Karnataka” conducted at College of Sericulture,
Chintamani, Chickaballapur district during summer 2014. There were 18 treatment
combinations comprising three irrigation methods, three irrigation levels and two mulching
treatments replicated thrice were laid out on split-split plot design. Results indicated that
water productivity, leaf and cocoon yield were significantly influenced by different irrigation
methods, levels and mulching. Among irrigation methods, subsurface drip recorded higher
leaf and cocoon yield (41280 kg ha-1 yr-1 and 60.99 kg/100 DFLs) than surface drip (35263
kg ha-1 yr-1 and 57.14 kg/100 DFLs) and micro spray jet (35567 kg ha-1 yr-1 and 57.18 kg/100
DFLs). Among levels of irrigation, irrigation at 1.0 CPE was found better in improving leaf
and cocoon yield (41818 kg ha-1 yr-1 and 62.33 kg/100 DFLs) compared to irrigation at 0.6
and 0.8 CPE. Maximum mulberry leaf and cocoon yield (38035 kg ha-1 yr-1 and 59.18 kg/100
DFLs) were obtained with mulching than without mulching (36705 kg ha-1 yr-1 and 57.70
kg/100 DFLs). Further, subsurface drip at 0.8 CPE recorded maximum water productivity
and minimum water used to earn one rupee of profit (364.41 kg hacm-1 and 113 L) than the
surface drip at 1.0 CPE (264.10 kg hacm-1 and 156 L) and micro spray jet at 1.0 CPE (271.83
kg hacm-1 and 152 L). These results showed that subsurface drip increased mulberry leaf and
cocoon yield by saving 20 per cent of water than other methods of irrigation and it is
appropriate to enhance water productivity in mulberry and cocoon production in Eastern Dry
Zone of Karnataka.
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