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Radiation utilization efficiency, latent heat flux and crop growth simulation in irrigated rice during post-flood period in east coast of India

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Title Radiation utilization efficiency, latent heat flux and crop growth simulation in irrigated rice during post-flood period in east coast of India
Not Available
 
Creator Kar, G., Ashwani Kumar, Sahoo, N., Mohapatra, S.
 
Subject Crop modeling Grain yield Rice Nitrogen Radiation use efficiency
 
Description Not Available
To study the radiation utilization efficiency, latent
heat flux, and simulate growth of rice during post-flood period
in eastern coast of India, on-farm trial was conducted with
three water regimes in main plots (W1 = continuous flooding
of 5 cm, W2 = irrigation after 2 days of water disappearance,
and W3 = irrigation after 5 days of water disappearance)
and five nitrogen levels in subplots (N1 = 0 kg N ha-1
,
N2 = 60 kg N ha-1
, N3 = 90 kg N ha-1
, N4 = 120 kg
N ha-1
, and N5 = 150 kg N ha-1
) on a rice cultivar, ‘Lalat’.
Average maximum radiation utilization efficiency (RUE) in
terms of above ground dry biomass of 2.09 (±0.05), 2.10
(±0.02), and 1.9 (±0.08) g MJ-1 were computed under W1,
W2, and W3, respectively. Nitrogen increased the RUE significantly,
mean RUE values were computed as 1.60 (±0.07),
1.78 (±0.02), 2.060 (±0.08), 2.30 (±0.07), and 2.34
(±0.08) g MJ-1 when the crop was grown with 0, 60, 90, 120,
and 150 kg ha-1 nitrogen, respectively. Midday average
latent heat flux (on clear days) varied from 7.4 to 14.9 and 8 to
13.6 MJ m-2 day-1 under W2 and W3 treatments, respectively,
at different growth stages of the crop in different seasons.
The DSSAT 4.5 model was used to simulate phenology,
growth, and yield which predicted fairly well under higher
dose of nitrogen (90 kg and above), but the model performance
was found to be poor under low-nitrogen dose
Not Available
 
Date 2018-12-03T08:33:28Z
2018-12-03T08:33:28Z
2013-06-20
 
Type Research Paper
 
Identifier Kar, G., Ashwani Kumar, Sahoo, N., Mohapatra, S. 2013. Radiation utilization efficiency, latent heat flux and crop growth simulation in irrigated rice during post-flood period in east coast of India. Paddy Water Environment 12(2):285-297
1611-2504
http://krishi.icar.gov.in/jspui/handle/123456789/15269
 
Language English
 
Relation Not Available;
 
Publisher springer