Estimating the effect of urease inhibitor on rice yield based on NDVI at key growth stages

• DOI: 10.15302/j-fase-2014028
• Publication Date: 2014-10-15T02:20:14Z
• Authors: Kailou LIU; Yazhen LI; Huiwen HU
• Keywords: 0106 biological sciences; 2. Zero hunger; normalized difference vegetation index (NDVI)|N-(n-butyl) thiophosphoric triamide (NBPT)|rice|grain yield; Agriculture (General); 01 natural sciences; S1-972

The effect of the urease inhibitor, N-(n-butyl) thiophosphoric triamide (NBPT) at a range application rates on rice production was examined in field experiment Jinxian County, Jiangxi Province, China.The normalized difference vegetation index (NDVI) measured key growth stages both early and late rice.The results showed that grain yield increased significantly when urea applied with NBPT, highest observed 1.00% NBPT (wt/wt).NDVI differed stage rice; it remained steady from heading to filling stage.Rice could be predicted NDVI taken growing stages, R 2 ranging 0.34 0.69 0.49 0.70 validation test RMSE (t$hm -2 ) values were 0.77 0.87 rice, respectively.Therefore, feasible estimate for different amounts inhibitor using NDVI.