Table 5.
Interaction effect of different nutrient managements and weeding regimes on plant height, leaf area index (LAI) at 60 DAS, crop growth rate (CGR) at 60–90 DAS, and grain yield of hybrid maize at harvest.
| Treatments Combination | Plant Height (cm) | LAI | Crop Growth Rate (gm−2day−1) | Grain Yield (t ha−1) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | ||
| Weedy check |
RDF | 87.8 | 93.3 | 0.70 | 0.69 | 3.10 | 3.10 | 4.30 | 4.39 |
| RDF + VC | 78.2 | 100.9 | 0.60 | 0.61 | 2.78 | 2.87 | 4.17 | 4.26 | |
| RDF + FYM | 84.8 | 106.7 | 0.67 | 0.76 | 3.38 | 3.46 | 4.36 | 5.37 | |
| RDF + BSM | 84.7 | 96.0 | 0.70 | 0.73 | 2.89 | 3.15 | 4.93 | 5.04 | |
| RDF + NC | 75.0 | 96.3 | 0.59 | 0.73 | 2.88 | 2.93 | 4.61 | 5.12 | |
| Chemical weed management |
RDF | 107.5 | 105.9 | 0.85 | 1.01 | 4.85 | 4.57 | 5.85 | 5.99 |
| RDF + VC | 105.7 | 117.0 | 1.05 | 1.20 | 3.86 | 4.59 | 6.15 | 6.61 | |
| RDF + FYM | 101.0 | 113.8 | 0.97 | 1.09 | 4.15 | 4.25 | 5.94 | 6.77 | |
| RDF + BSM | 96.0 | 122.3 | 0.94 | 1.16 | 4.36 | 4.65 | 5.96 | 7.06 | |
| RDF + NC | 100.8 | 112.3 | 1.02 | 1.04 | 4.49 | 3.86 | 6.41 | 7.07 | |
| Integrated weed management | RDF | 109.2 | 116.7 | 1.08 | 1.39 | 5.46 | 4.93 | 6.44 | 6.60 |
| RDF + VC | 111.5 | 116.2 | 1.28 | 1.30 | 5.04 | 5.12 | 6.35 | 6.82 | |
| RDF + FYM | 110.5 | 113.3 | 1.34 | 1.32 | 5.20 | 5.33 | 6.55 | 6.65 | |
| RDF + BSM | 112.3 | 121.4 | 1.40 | 1.24 | 4.60 | 5.37 | 7.83 | 8.07 | |
| RDF + NC | 106.2 | 118.1 | 1.25 | 1.26 | 5.04 | 5.19 | 6.85 | 7.36 | |
| SEm ± | 3.40 | 3.88 | 0.12 | 0.10 | 0.21 | 0.16 | 0.33 | 0.34 | |
| CD (p ≤ 0.05) | 9.84 | 11.23 | 0.34 | 0.30 | 0.61 | 0.47 | 0.97 | 0.99 | |
RDF: 100% recommended dose (RD) of NPK through fertilizer, RDF + VC: 25% RDN through VC, RDF + FYM: 25% RDN through FYM, RDF + BSM: 25% RDN through BSM, RDF + NC: 25% RDN through NC, Weedy check: Un-weeded control, Chemical weed management: Atrazine 1000 g/ha at 2 DAS, Integrated weed management: Atrazine 1000 g ha−1 at 2 DAS followed by mechanical weeding at 30 DAS. SEm, Standard error of mean; CD, Critical difference; NS, Non-significant.