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Biomass and biomass water use efficiency in oilseed crop (Brassica juncea L.) under semi-arid microenvironments

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Title Biomass and biomass water use efficiency in oilseed crop (Brassica juncea L.) under semi-arid microenvironments
Not Available
 
Creator Tarun Adak,
Gopal Kumar
N.V.K. Chakravarty
R.K. Katiyar
P.S. Deshmukh
H.C. Joshi
 
Subject Brassica juncea Biomass partitioning Biomass water use efficiency Yield water use efficiency Semi-arid microenvironments
 
Description Not Available
Biomass production in arid and semi-arid regions requires a special attention owing to
spatiotemporal scarcity of irrigation water wherein improved water use efficiency (WUE) of
the crop is targeted. Under field conditions, the crop undergoes dynamic changes in near
ground or within-canopy microenvironments. This changed microclimatic condition may
have an impact on phenological response of the oilseed crop which in turn would affect
biomass productivity, economic seed yield and water use efficiency of the crop. Henceforth,
quantification of biomass production and its WUE of oilseed Brassica crop is
essentially required owing to have better understanding of the crop water requirement
under the era of climate change. Following a 2 years field experiment, it was revealed that
the changes in leaf area index were explained by about 68e74%. The best fit polynomial
third order regression analysis indicated >93% prediction in biomass production as
a function of time factor. Improved biomass partitioning into economic sinks was also
observed. Small scale change in near ground microenvironment may reduce the prediction
of biomass variability to the extent of 3%. The mean ET variations were observed as 2.4, 1.5
and 3.2 mm day_1 during the critical phenological stages. Mean seed yield, biomass WUE
and seed yield WUE ranged between 2.71 and 2.87 Mg ha_1, 11.4 and 13.1 g m_2 mm_1 and
19.3 and 22.9 kg ha_1 mm_1 respectively. Variations in both biomass and seed yield water
use efficiencies due to small scale change in near ground microclimates were revealed.
Not Available
 
Date 2020-03-05T08:42:13Z
2020-03-05T08:42:13Z
2013-01-20
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/33591
 
Language English
 
Relation Not Available;
 
Publisher Not Available