Research Article
Effect of Tillage, Irrigation, and Nutrient Levels on Growth and Yield of Sweet Potato in Rice Fallow
Table 3
Effect of tillage, irrigation, and nutrient levels on yield attributes of sweet potato in rice fallow.
| | Treatment | No. of roots per plant | Root length (cm) | Root diameter (cm) | Root yield per plant (g) | | | | | N-S | E-W | | | | 2007-2008 | 2008-2009 | 2007-2008 | 2008-2009 | 2007-2008 | 2008-2009 | 2007-2008 | 2008-2009 | 2007-2008 | 2008-2009 |
| | Tillage | | | | | | | | | | | | Minimum tillage | 2.9 | 2.4 | 13.6 | 12.5 | 6.5 | 6.2 | 5.7 | 5.6 | 154.0 | 147.5 | | Conventional tillage | 3.0 | 2.9 | 13.9 | 13.4 | 7.6 | 7.2 | 7.5 | 7.2 | 162.8 | 163.4 | | LSD () | NS | 0.2 | NS | 0.6 | 0.7 | 0.4 | 0.2 | 0.4 | 7.7 | 11.1 |
| | No. of irrigation | | | | | | | | | | | | 3 | 2.3 | 2.1 | 12.0 | 11.5 | 6.2 | 5.7 | 5.2 | 4.9 | 125.3 | 121.3 | | 5 | 3.0 | 2.7 | 13.9 | 13.1 | 7.3 | 7.2 | 7.1 | 7.1 | 166.4 | 164.7 | | 7 | 3.5 | 3.2 | 15.3 | 14.4 | 7.7 | 7.2 | 7.6 | 7.2 | 183.7 | 180.5 | | LSD () | 0.1 | 0.1 | 0.2 | 0.3 | 0.3 | 0.2 | 0.3 | 0.1 | 5.2 | 8.1 |
| Nutrient levels
(N-P2O5-K2O kg ha−1) | | | | | | | | | | | | 0-0-0 | 2.6 | 2.3 | 13.2 | 12.2 | 6.4 | 6.1 | 6.0 | 5.8 | 129.3 | 127.4 | | 37.5-25-37.5 | 3.0 | 2.8 | 13.9 | 13.0 | 7.2 | 6.9 | 6.8 | 6.6 | 165.2 | 161.1 | | 75-50-75 | 3.2 | 2.9 | 14.2 | 13.7 | 7.5 | 7.2 | 7.0 | 6.9 | 180.9 | 177.9 | | LSD () | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 4.0 | 6.3 |
|
|
