Table 7 Effect of bio-slurry application on crop yield and uptake of chemical fertilizer (t-value in parentheses)
Matching method | Treated observation | Control observation | Crop yield (ATT) | Chemical fertilizer uptake (ATT) |
|---|---|---|---|---|
Nearest neighbor | 50 | 25 | 1.7 (1.5) | − 0.34 (0.6) |
Radius | 47 | 71 | 1.46 (1.87)* | − 0.22 (1.256) |
Kernel | 50 | 71 | 1.56 (1.9)* | − 0.28 (1.6) |
Stratification | 50 | 71 | 1.06 (1.24) | −0.255 (1.96) |