Estimating pre-harvest production of maize in Kenya using large-scale aerial photography and radiometry
- 1 December 1986
- journal article
- research article
- Published by Taylor & Francis in International Journal of Remote Sensing
- Vol. 7 (12) , 1669-1677
- https://doi.org/10.1080/01431168608948960
Abstract
Pre-harvest production of maize in Kenya was estimated using radiometry and aerial photography. Twenty-five strata covering 61 000 km2 contained 900 000 ha of maize. The ratio of near-infrared (NIR) to red reflected from maize fields was measured with airborne radiometers over 100 fields. The actual yields were measured immediately prior to harvesting. A regression (R2 = 0·77) predicting yield from NIR/red was obtained. A systematic radiometric survey was conducted and the regression was used to estimate the pre-harvest yield in all maize growing strata. The average nation-wide yield was 372 t/km2, giving a total production of 3360 kt.This publication has 2 references indexed in Scilit:
- Use of spectral data to assess wheat response to soil waterField Crops Research, 1985
- Hand-held spectral radiometer to estimate gramineous biomassApplied Optics, 1976