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- W2185259449 abstract "Weeds and pests significantly affect grain yield of rice crops. This study aimed at the determination of the possible control mechanisms for weeds and pests in paddy rice crops. A randomized complete block design with three replications was used in an experiment on the K818 rice variety. Four treatments were designed as (1) CK continuous flooding irrigation, (2) LL lower water-catching controlled irrigation, (3) LM moderate water-catching controlled irrigation and (4) HH higher water-catching controlled irrigation. The results showed that the treatments of LL and HH with the model of RCCI (water-catching and controlled irrigation) significantly (P<0.05) reduced the infestation of spontaneous plant Echinochloa pyramidalis from 4 plants m -2 to 1 plant m -2 . The K818 rice variety showed an allelopathic effect against Echinochloa pyramidalis and the intermediate host plant of the rice stem borer Scirpophaga incertulas. This insect migrated from Echinochloa pyramidalis onto the rice. The LL treatment showed a lower infection rate of 1.43% due to the presence of Scirpophaga incertulas. The economic loss in LL treatment was 0.13 ton ha -1 . The LM treatment showed the highest infection rate of 2.05% and a significant economic loss of 0.19 ton ha -1 (P<0.05). As one practice of integrated pest management, the LL treatment was considered the best option. A relationship between increased production of rice and weed management was established in our research." @default.
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- W2185259449 date "2012-04-01" @default.
- W2185259449 modified "2023-09-24" @default.
- W2185259449 title "Grain yield and weed-mediated pest incidence in paddy rice crops under controllable irrigation regimes" @default.
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