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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 7, Issue 6 (2018)

Estimation of rice yield and transplanting date by using satellite data in Karnataka state of India

Author(s):

Pritam O Bhutada and Deepak C Lokhande

Abstract:
Rice is a staple food in Asia and India is the largest rice growing country in world. The productivity and thereby productions vary within and among the state or regions. SAR based rice crop inventory is regularly carried out in India. The present study was aimed to estimate correlation between transplanting data and biomass derived from remote sensing data and observed field data in Shimoga district of Karnataka state for kharif rice. Shimoga is known as rice bowl of Karnataka.
The backscatter coefficient (σ°) derived from active C-band Synthetic Aperture Radar (SAR) data from MRS mode RISAT-1 satellite data was used, averaged for 3 x 3 pixel windows and used to estimate transplanting date and crop yield. The backscatter showed good relation with observed field yield obtained through study. The coefficient of determination (R2) observed for the different model estimates based on RS data were 0.65, 0.90 and 0.45 for crop yield, transplanting date and rice dry biomass, respectively. It indicates that RS technology can estimate the yields at field level with certain accuracy. It was also observed that the number of sites (i.e. 30) were not sufficient to estimate yields of district, suggesting RS based sampling farm with larger sampling size to be included as future strategy.

Pages: 757-761  |  974 Views  287 Downloads


Journal of Pharmacognosy and Phytochemistry Journal of Pharmacognosy and Phytochemistry
How to cite this article:
Pritam O Bhutada and Deepak C Lokhande. Estimation of rice yield and transplanting date by using satellite data in Karnataka state of India. J Pharmacogn Phytochem 2018;7(6):757-761.

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