Forecasting of growth rates of wheat yield of Uttar Pradesh through non-linear growth models

Panwar, S and Singh, K N and Kumar, A and Sarkar, S S and Paul, R and Rathore, A and Sivaramane, N (2016) Forecasting of growth rates of wheat yield of Uttar Pradesh through non-linear growth models. Indian Journal of Agricultural Sciences, 84 (7). pp. 856-859.

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Abstract

Wheat production in India is about 70 million tonnes per year which counts for approximately 12 per cent of world’s production. Being the second largest in population, it is also the second largest in wheat consumption after China, with a huge and growing wheat demand. Major wheat growing states in India are Uttar Pradesh, Punjab, Haryana, Rajasthan, Madhya Pradesh, Gujarat and Bihar. All of north is replenished with wheat cultivation. Uttar Pradesh, the largest wheat growing region of the country, produces around 28 million tonnes of wheat and Bihar produces around 5 million tonnes. The usual parametric approach for growth rate analysis is to assume multiplicative error in the underlying nonlinear geometric model and then fit the linearized model by ‘method of least squares’. This paper deals with a critical study of wheat yield of Uttar Pradesh with a non-linear approach. The available data of rice during different years is taken into consideration and different statistical models are fitted for that. The time series data on annual yield of wheat in UP from 1970-2010 were collected from various sources. Growth rates are computed through non-linear models, viz. Logistic, Gompertz and Monomolecular models. Different nonlinear procedures such as Gauss-Newton Method, Steepest-Descent Method, Levenberg-Merquadt Technique and Do Not Use Derivative (DUD) Method were used in this study to estimate the nonlinear growth rates. The results showed that logistic model performed better followed by Gompertz and monomolecular.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Forecasting, Gauss Newton method, Goodness of fit, Non-linear growth models, Nonlinear growth rate, Randomness, Theil statistics
Subjects:	Others > Statistical Models Others > Wheat Others > Statistics Others > Indian Agriculture
Depositing User:	Mr Ramesh K
Date Deposited:	06 Dec 2018 09:13
Last Modified:	06 Dec 2018 09:13
URI:	http://oar.icrisat.org/id/eprint/10997
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
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