Table 4 Influence of weed competition and weed free periods on agronomic and yield attributes of Chickpea (pooled data of two growing seasons).
From: Critical period of weed-crop competition in irrigated chickpea as a tool for judicious weed control
Treatments | Crop dry matter (g m−2) | Crop growth rate (g m−2 day−1) | Plant population (plants m−2) | Plant height (cm) | Branches per plant | Pods per plant | Seeds per plant | 100-seed weight (g) | Seed yield (t ha−1) | Harvest index (%) |
|---|---|---|---|---|---|---|---|---|---|---|
Weedy (season-long) | 286.36 d | 3.25 d | 13.50 bc | 41.30 e | 6.12 d | 14.98 f | 18.52 e | 22.36 e | 0.48 d | 58.65 a |
Weed competition up to 20 DAS | 587.58 ab | 6.79 ab | 16.50 abc | 50.53 b | 8.02 b | 32.25 b | 33.58 b | 29.10 b | 1.05 a | 48.45 d |
Weed competition up to 40 DAS | 451.26 bc | 5.28 bc | 13.83 abc | 44.66 cde | 7.17 bcd | 24.35 cd | 25.53 cd | 25.68 cd | 0.76 bc | 41.26 f |
Weed competition up to 60 DAS | 351.71 cd | 4.10 cd | 13.83 abc | 43.04 de | 7.18 bcd | 21.95 cde | 24.30 d | 24.51 cde | 0.70 bc | 50.56 c |
Weed competition up to 80 DAS | 313.75 d | 3.61 cd | 14.50 abc | 42.36 e | 6.72 cd | 18.27 def | 21.72 de | 22.83 de | 0.60 cd | 44.29 e |
Weed free (season-long) | 719.24 a | 8.51 a | 20.33 a | 57.13 a | 12.07 a | 40.43 a | 41.70 a | 32.99 a | 1.23 a | 48.83 d |
Weed free till 20 DAS | 325.99 cd | 3.80 cd | 14.33 abc | 44.29 cde | 6.20 d | 16.80 ef | 19.90 e | 24.45 cde | 0.64 bcd | 59.34 a |
Weed free till 40 DAS | 400.17 cd | 4.71 cd | 11.33 c | 47.21 bcd | 6.97 bcd | 20.25 cdef | 21.70 de | 25.34 cde | 0.66 bcd | 57.18 b |
Weed free till 60 DAS | 410.47 cd | 4.83 cd | 15.67 abc | 48.52 bc | 7.17 bcd | 22.12 cde | 24.77 d | 27.56 bc | 0.70 bc | 40.25 g |
Weed free till 80 DAS | 601.84 a | 7.18 a | 18.33 ab | 49.43 b | 7.55 bc | 26.18 bc | 29.28 c | 29.50 b | 0.81 b | 40.64 fg |
HSD p ≤ 0.05 | 136.753 | 1.225 | 6.726 | 7.684 | 1.225 | 3.85 | 7.134 | 3.23 | 0.203 | 0.781 |
