In order to use new and low cost methods in precision agriculture, nitrogen should be supplied for plants on time and precisely. For determining the required nitrogen of paddy rice in the clustering stage, a series of experiments were conducted using three different methods of: image processing, kjeldahl and chlorophyll meter set (SPAD-502), in a randomized complete block design with three replications during 2010 at Rice Research Center of Tonekabon, Iran. Four experimental treatments were different level of fertilizer (Urea with 46% nitrogen). In the clustering stage, some images from rice plants were taken vertically by a digital camera and were analyzed using image processing technique. Simultaneously the chlorophyll index of plants was measured by SPAD-502 chlorophyll meter set and the percentage amount of nitrogen was measured using of the so called kjeldahl laboratory method. The results showed that the three methods of determining nitrogen of rice plant were highly correlated. Moreover, the correlation among the three methods and crop yield were almost the same. In general, the method of image processing could have a high potential for nitrogen management in the field, while this method was low-cost, faster and also nondestructive in comparison to the other methods.
Larijani, M. R. & Farrokhi Teimourlou, R. (2011). Evaluation of Image Processing Technique for Measuring of Nitrogen and Yield in Paddy Rice and Comparing it with Standard Methods. (e25170). Journal of Agricultural Machinery, 1(2), e25170 https://doi.org/10.22067/jam.v1i2.11356
MLA
Larijani, M. R., & Farrokhi Teimourlou, R. "Evaluation of Image Processing Technique for Measuring of Nitrogen and Yield in Paddy Rice and Comparing it with Standard Methods" .e25170 , Journal of Agricultural Machinery, 1, 2, 2011, e25170. doi: 10.22067/jam.v1i2.11356
HARVARD
Larijani, M. R., & Farrokhi Teimourlou, R. (2011). 'Evaluation of Image Processing Technique for Measuring of Nitrogen and Yield in Paddy Rice and Comparing it with Standard Methods', Journal of Agricultural Machinery, 1(2), e25170. doi: 10.22067/jam.v1i2.11356
CHICAGO
Larijani, M. R. & Farrokhi Teimourlou, R., "Evaluation of Image Processing Technique for Measuring of Nitrogen and Yield in Paddy Rice and Comparing it with Standard Methods." Journal of Agricultural Machinery, 1 2 (2011): e25170, doi: 10.22067/jam.v1i2.11356
VANCOUVER
Larijani M. R., Farrokhi Teimourlou R. Evaluation of Image Processing Technique for Measuring of Nitrogen and Yield in Paddy Rice and Comparing it with Standard Methods. JAM. 2011;1(2):e25170 (In Persian). doi: 10.22067/jam.v1i2.11356
