Table 6 Field efficacy of DHA and PA on yield attributes of rice recorded at the time of harvest (120 days after transplanting). The experiment was conducted in a naturally nematode-infested field. Plants were treated with DHA or PA alone or in combination as a foliar application or mock-treated with water or DMSO 15 days after transplanting (DAT) to the main field, followed by six spraying at 10 days intervals
Treatments | Tillers/hill | Effective tillers/hill | Panicle length (cm) | 1000 grain weight (g) | Total grains/ panicle | Healthy grains/panicle | Unfilled/diseased grains/ panicle | Straw yield (g) |
|---|---|---|---|---|---|---|---|---|
Control | 18.75 ± 1.6 b | 11.38 ± 0.6 b | 38.61 ± 1.1 b | 32.59 ± 0.3 a | 74.63 ± 5.9 b | 69.62 ± 5.9 c | 5.00 ± 1.2 bc | 17.72 ± 1.8 d |
DHA 10 mM | 19.88 ± 1.3 b | 14.00 ± 1.1 ab | 41.61 ± 2.1 ab | 34.51 ± 0.9 a | 89.38 ± 5.7 a | 76.13 ± 7.8 bc | 13.25 ± 5.0 a | 25.53 ± 2.4 ab |
DHA 20 mM | 25.63 ± 1.5 a | 16.00 ± 1.7 a | 43.73 ± 0.9 a | 34.86 ± 0.9 a | 102.50 ± 5.3 ab | 98.00 ± 5.2 a | 4.50 ± 0.5 bc | 27.61 ± 1.1 a |
PA 300 µM | 19.63 ± 1.6 b | 13.50 ± 1.4 ab | 40.99 ± 1.5 ab | 34.34 ± 0.8 a | 88.50 ± 4.7 a | 76.75 ± 8.0 bc | 11.75 ± 3.5 ab | 22.59 ± 1.0 bc |
DHA 10 mM + PA 300 µM | 24.13 ± 0.9 a | 15.75 ± 1.2 a | 42.23 ± 1.3 ab | 34.69 ± 0.8 a | 96.13 ± 6.1 ab | 91.38 ± 6.0 ab | 4.75 ± 1.0 bc | 26.55 ± 1.4 ab |
DMSO 300 µM | 19.00 ± 1.7 b | 12.25 ± 1.1 ab | 41.26 ± 1.6 ab | 33.15 ± 1.2 a | 76.75 ± 5.9 b | 74.00 ± 5.8 bc | 2.75 ± 0.3 c | 19.18 ± 1.7 cd |