Table 2.
Interaction effect of different nutrient managements and weeding regimes on weed dry weight (g m−2) in hybrid maize.
| Treatments Combination | Weed dry Weight (g m−2) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| A. arvensis | C. rotundus | V. hirsuta | |||||||
| 30 DAS | 60 DAS | 30 DAS | 60 DAS | ||||||
| Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | ||
| Weedy check |
RDF | 13.23 | 8.09 | 168.4 | 88.7 | 47.4 | 17.0 | 7.96 | 21.85 |
| RDF + VC | 8.89 | 7.69 | 145.8 | 108.8 | 49.2 | 14.9 | 5.13 | 25.33 | |
| RDF + FYM | 14.11 | 5.78 | 150.4 | 76.3 | 62.7 | 15.5 | 7.69 | 21.58 | |
| RDF + BSM | 12.44 | 6.88 | 135.5 | 61.4 | 37.2 | 19.6 | 5.63 | 23.22 | |
| RDF + NC | 15.43 | 7.10 | 139.1 | 61.4 | 42.6 | 15.8 | 10.56 | 19.81 | |
| Chemical weed management |
RDF | 0.64 | 0.00 | 2.3 | 3.7 | 35.6 | 13.4 | 3.29 | 15.33 |
| RDF + VC | 0.94 | 0.00 | 1.5 | 5.8 | 38.2 | 13.2 | 1.94 | 6.86 | |
| RDF + FYM | 0.58 | 0.00 | 2.4 | 2.5 | 28.2 | 13.4 | 1.65 | 10.91 | |
| RDF + BSM | 0.64 | 0.00 | 3.7 | 0.0 | 36.6 | 21.7 | 1.97 | 6.25 | |
| RDF + NC | 0.24 | 0.00 | 1.4 | 0.0 | 29.8 | 15.9 | 2.56 | 5.82 | |
| Integrated weed management | RDF | 0.71 | 0.00 | 1.1 | 0.0 | 47.5 | 17.9 | 0.32 | 2.07 |
| RDF + VC | 0.91 | 0.00 | 1.3 | 3.5 | 32.4 | 15.7 | 0.00 | 4.05 | |
| RDF + FYM | 1.11 | 0.00 | 3.5 | 0.9 | 30.2 | 11.7 | 0.00 | 5.53 | |
| RDF + BSM | 0.05 | 0.00 | 2.4 | 0.0 | 34.6 | 11.5 | 0.99 | 2.96 | |
| RDF + NC | 0.00 | 0.00 | 2.4 | 0.0 | 31.5 | 13.9 | 0.00 | 0.67 | |
| SEm ± | 2.41 | 0.92 | 16.7 | 5.5 | 5.7 | 3.3 | 1.65 | 2.30 | |
| CD (p ≤ 0.05) | 6.99 | 2.67 | 48.4 | 15.9 | 16.4 | NS | 4.78 | 6.65 | |
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 at 2 DAS followed by mechanical weeding at 30 DAS. SEm, Standard error of mean; CD, Critical difference; NS, Non-significant.