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A Within Year Growth Model for Crop Yield Forecasting
Author(s) -
Jain R. C.,
Agrawal Ranjana,
Singh K. N.
Publication year - 1992
Publication title -
biometrical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.108
H-Index - 63
eISSN - 1521-4036
pISSN - 0323-3847
DOI - 10.1002/bimj.4710340705
Subject(s) - dry matter , panicle , maturity (psychological) , mathematics , yield (engineering) , agronomy , growth model , crop , statistics , head (geology) , zoology , biology , psychology , developmental psychology , materials science , mathematical economics , metallurgy , paleontology
Logistic growth model can be used to forcast total dry matter at maturity about one month before harvest in wheat and rice whereas forecast of head/panicle weight can be made about 15 days advance of harvest. Total dry matter as well as head weight at maturity were over estimated in general when partial data were used. Modified growth model worked well to adjust for over estimation in total dry matter and head weight at maturity.