Table 1 Residual soil phosphorous (P) and zinc (Zn), number of spikes m−2, number of grains spike−1, thousand grains weight and grain yield of wheat as affected by preceding rice genotypes, phosphorus and zinc levels under rice–wheat cropping system
From: Residual phosphorus and zinc influence wheat productivity under rice–wheat cropping system
Applied (kg P ha−1) | Residual soil P (mg kg−1) | Residual soil Zn (mg kg−1) | Number of spikes m−2 | Number of grains spike−1 | Thousand grains weight (g) | Grain yield (kg ha−1) |
|---|---|---|---|---|---|---|
0 | 4.1 d | 1.13 c | 226 d | 45 d | 36.06 c | 3434 d |
40 | 8.1 c | 1.20 b | 256 c | 49 c | 39.08 b | 3974 c |
80 | 9.8 b | 1.23 ab | 282 b | 51 b | 40.46 a | 4194 b |
120 | 11.3 a | 1.26 a | 290 a | 52 a | 40.54 a | 4291 a |
LSD0.05 | 0.23 | 0.030 | 5.13 | 0.7 | 0.578 | 72.34 |
Applied Zn (kg ha−1) | ||||||
0 | 7.8 c | 0.75 d | 253 c | 48 c | 38.51 c | 3800 c |
5 | 8.3 b | 1.26 c | 261 b | 49 b | 39.25 ab | 3965 b |
10 | 8.4 b | 1.37 b | 268 a | 50 a | 39.53 a | 4010 b |
15 | 8.8 a | 1.44 a | 271 a | 50 a | 38.86 bc | 4118 a |
LSD0.05 | 0.19 | 0.027 | 4.55 | 0.5 | 0.455 | 75.70 |
Rice genotypes | ||||||
Basmati-385 | 9.1 a | 1.34 a | 277 a | 50 a | 39.47 a | 4234 a |
F-Malakand | 8.1 b | 1.19 b | 270 b | 50 a | 39.19 a | 4085 b |
Pukhraj | 7.8 c | 1.08 c | 243 c | 48 b | 38.44 b | 3601 c |
LSD0.05 | 0.20 | 0.026 | 4.44 | 0.6 | 0.500 | 62.65 |
Years | ||||||
Year-I | 7.9 b | 1.17 b | 261 a | 49 b | 38.73 b | 3850 b |
Year-II | 8.8 a | 1.24 a | 265 a | 50 a | 39.34 a | 4097 a |
P × Zn | **Fig 2 | **Fig 3 | **Fig 4 | **Fig 5 | *Fig 6 | ***Fig. 7 |