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Forecasting rain-fed rice yield with biomass of early phenophases peak intercepted PAR and ground based remotely based vegetation indices.

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Title Forecasting rain-fed rice yield with biomass of early phenophases peak intercepted PAR and ground based remotely based vegetation indices.
Not Available
 
Creator Kar, G. and Kumar, A.
 
Subject Radiation interception, rice, vegetation index, yield forecasting, biomass
 
Description Not Available
Rice is the main staple food of the country but crop productivity in some years declines due to
erratic monsoon and non-uniformity in spatial and temporal distribution of rainfall. Hence, assessing
productivity of the rice crop in advance using meteorological and plant physiological attributes will be
helpful for planners to take decision on contingency measures. In this investigation, dry biomass of early
phenophases (active tillering, panicle initiation, boot leaf stages, flowering),peak intercepted
photosynthetically active radiation (IPAR), peak spectral reflectance based vegetation indices of 3 rice
varieties under 3 nitrogen levels (50, 100 and 130 kg ha-1) were made correlated with grain yield.Based
on interrelationship it was found that biomass of flowering period was better correlated with grain yield
with the R2
value of 0.75.Inter-relationship between peak IPAR(%), remotely sensed peak simple ratio
index (IR/R) and normalized difference vegetation index (NDVI)with the rice yield were also established.
Multiple regression modelwas developed by interrelating yield as dependant variable with dry biomass of
flowering stage, peak IPAR(%) and peak IR/R and NDVI as independent variables which may be used as
an effective tool for early prediction of rice yield, at least 30-40 days in advance. The grain yield was also
estimated through developed algorithm using MODIS satellite derived NDVI and compared with that of
actual yield.
Not Available
 
Date 2018-11-29T06:32:52Z
2018-11-29T06:32:52Z
2014-06
 
Type Research Paper
 
Identifier Kar, G. and Kumar, A. 2014. Forecasting rain-fed rice yield with biomass of early phenophases peak intercepted PAR and ground based remotely based vegetation indices. Journal of Agro-meteorology 16 (1): 94-103
0972-1665
http://krishi.icar.gov.in/jspui/handle/123456789/14046
 
Language English
 
Relation Not Available;
 
Publisher Association of Agrometeorologists