INFLUENCE OF NANO ZINC APPLICATION ON MULBERRY AND COCOON PRODUCTIVITY
Loading...
Date
2017-07-28
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University Agricultural sciences,GKVk, Bangalore
Abstract
The pot culture and field experiment was conducted to study the influence of nano
zinc application on mulberry and cocoon productivity at College of Sericulture,
Chintamani during 2016. The experiment consisted of seven treatment combinations with
three replications (RCBD). Significantly higher available nitrogen (434.86 kg ha-1),
phosphorus (106.31 kg ha-1), potassium (359.90 kg ha-1) and Zn content (2.15 kg ha-1)
were recorded in treatment of nano zinc oxide at 20 ppm as foliar spray and soil
application at 2 g/ha in pot culture experiment. The observations recorded in field
experiment revealed significantly higher nitrogen (4.74 %), zinc (41.36 mg kg-1), shoot
height (96.63 cm), number of branches (8.47/plant), number of leaves (18.60/shoot),
number of leaves (157.15/plant), leaf area (96.90 cm2) , leaf yield (0.46 kg/plant), higher
total chlorophyll (2.44 mg g-1), crude protein (39.00 %) and crude fiber (14.19 %) of
mulberry leaves in nano zinc oxide of 50 ppm used as foliar spray. Further, significantly
shorter moulting and 5th instar duration (91.25 hrs and 7.22 days) and higher larval
weight (25.78 g/10 larvae), ERR (94.00 %), cocoon weight (14.63 g/10 cocoons), shell
weight (2.49 g/10cocoons) and single filament length (823.83 m) were recorded in nano
zinc oxide at 20 ppm as foliar spray. The net returns per hectare of mulberry was more
(Rs.1,53,083.492) in treatment with nano zinc oxide of 20 ppm as foliar spray. The nano
zinc fertilizer was found to be cost effective with higher B: C ratio (2.93) as compared to
ZnSO4 fertilizer (2.43).
Description
Keywords
null