Response of different barley varieties to nitrogen levels
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Date
2021-03
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CCSHAU, Hisar
Abstract
The present investigation entitled “Response of different barley varieties to nitrogen
levels” was conducted during the Rabi season during 2019-20 at research farm of Wheat and
Barley section, CCSHAU, Hisar. The experiment was laid out in split plot design with three
replications. The main plot treatments were six levels of nitrogen i.e. 0, 20, 40, 60, 80 and 100
kg N ha-1 and sub plot treatments consists of four barley varieties (BH 946, BH 393, BH 885
and Karan 16). Results indicated that application of nitrogen and varieties had significant
effects on plant growth parameters such as plant height, number of tillers and dry matter
accumulation. Higher level of nitrogen significantly influenced the yield attributes and were
maximum when 100 kg N ha-1 was applied, however, it was at par with 80 kg N ha-1. The
maximum grain yield (41.40 q ha-1) was recorded with application of 100 kg N ha-1 which
was significantly higher as compared to lower levels of nitrogen except 80 kg N ha-1. The
application of 20, 40, 60, 80 and 100 kg N ha-1 increased the grain yield by 44.83, 59.02,
67.13, 71.14 and 72.29 per cent, respectively over control. Nitrogen application did not impart
any significant differences in harvest index. The protein content was significantly increased
with increasing nitrogen levels and was found significantly higher (10.48 %) at 80 kg N ha-1
over lower levels of nitrogen but at par with 100 kg N ha-1. The hectoliter weight was
significantly higher (64.17 kg hl-1) at 100 kg N ha-1. The net return and B C ratio were
maximum with the application of 100 kg N ha-1. Among varieties, number of effective tillers
and 1000 grain weight were found significantly higher in two rowed barley variety BH 885,
whereas BH 946 recorded maximum number of grains per spike. The grain yield was
significantly higher in BH 946 (33.11 q ha-1) which was at par with BH 393 but significantly
higher than BH 885 and Karan 16. BH 946 gave highest net return (Rs. 40995 ha-1) and B C
ratio (1.63) as compared to other varieties.