Yield Improvement of Kharif Rice by Different  Weed Management Practices

Patel, N. C.; Ghosh, Pritam

doi:10.20546/ijcmas.2019.803.043

Cited by 3 publications

(5 citation statements)

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“…The beneficial effect of roto weeding in paddy crop has also been observed by Mohanty and Bhuyan [12]. The beneficial effect of a hand weeding at 40 DAT along with the preemergence application of herbicide on better growth and production of paddy was evident in the studies of Patel and Ghosh [13].…”

Section: Effect Of Weed Management In Transplanted Paddy Under Altern...mentioning

confidence: 53%

Weed Management in Transplanted Paddy in Wetlands under Water Shortage with Alternate Wetting and Drying System of Irrigation

Paul,

Joseph,

Katharine

et al. 2024

IJECC

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A field experiment was conducted during the Rabi season of 2023-2024 in the farm of Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu to find out an effective weed management system in transplanted paddy under alternate wetting and drying. The experiment was laid out in randomized block design with thirteen treatments and two replications.The results showed that at all stages of observations tallest paddy crop was produced in T13 (continuous submergence in paddy field). The height of paddy crop at harvest was 14.3 % more in T13 than in unweeded control under alternate wetting and drying (T12). Highest number of tillers per plant (16.5) were recorded in T8 which received early post emergence application of Bispyribac sodium @ 0.03 kg ai/ha at 15 DAT + roto weeding at 35 DAT. By 90 DAT highest leaf area index was recorded by pre emergence application of Pyrazosulfuron ethyl along with one hand weeding at 35 DAT(T6), early post emergence spray of Bispyribac sodium alone (T7), and Bispyribac sodium with one roto weeding at 35 DAT (T8) and Bispyribac sodium and one hand weeding at 35 DAT (T9). By harvest the dry matter production was the highest in T8 (Bispyribac sodium with one roto weeding at 35 DAT) followed by T9 (Bispyribac sodium with one hand weeding at 35 DAT).Highest production of grains and straw (7362 and 15280 kg ha-1) were also recorded in T8 (early post emergence application of Bispyribac sodium @ 0.03 kg ai/ha at 15 DAT + roto weeding at 35 DAT) closely followed by T9 (early post emergence application of Bispyribac sodium @ 0.03 kg ai/ha at 15 DAT + hand weeding at 35 DAT).

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Section: Effect Of Weed Management In Transplanted Paddy Under Altern...mentioning

confidence: 53%

Weed Management in Transplanted Paddy in Wetlands under Water Shortage with Alternate Wetting and Drying System of Irrigation

Paul,

Joseph,

Katharine

et al. 2024

IJECC

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“…Rice is grown in a variety of environments, including irrigated lowlands, mid-deep lowlands, deep water lowlands and uplands (Mahajan et al, 2014;Patel and Ghosh, 2019). Transplanting in puddled soil with continuous flooding is a major method of rice cultivation in Kapilbastu, Nepal.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, weeds by the virtue of their high adaptability and faster growth dominate the crop habitat and reduce the yield potential of the crop. Transplanted rice crops are subjected to a diverse weed flora that includes grasses, sedges and some broadleaf weeds, resulting in yield reductions of up to 48% and an annual loss of 15 million tonnes owing to weed competition (Patel and Ghosh, 2019). According to Veeraputhiran and Balasubramanian, 2014, 45-51 % yield reduction was caused by weeds in transplanted rice.…”

Section: Introductionmentioning

confidence: 99%

Performances of Transplanted Spring Rice Under Different Weed Management Techniques in Kapilbastu, Nepal

Kafle

Simkhada

2023

Turkish JAF Sci.Tech.

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At Banganga, Kapilbastu, Nepal, a field experiment was conducted in the spring of 2021 to determine the performances of transplanted spring rice under different weed management techniques. With five treatments and four replications, the experiment was structured as a single-factorial Randomized Complete Block Design (RCBD). The treatments consisted of Pretilachlor 50% EC (dose: 500 ml a.i. per acre) as pre-emergence herbicide, Pretilachlor 50% EC (dose: 500 ml a.i. per acre) as pre-emergence herbicide plus hand weeding at 20, 40 DAT, Hand weeding at 20 DAT, 40 DAT, 60 DAT, Cono-weeding at 20 DAT, 40 DAT, 60 DAT and control. The plots treated with Pretilachlor plus hand weeding recorded a significantly higher plant height (99cm), higher number of effective tillers per meter square (11.97), higher panicle length (26cm), and higher number of grains per panicle (200.60) at 90 DAT. The sterility percentage and the no. of grains per panicle were not affected by the weed management practices. Cono-weeding was found statistically superior in terms of grain yield (6.09 Mt ha-1) and harvest index (42.10 %). The experiment concluded that the weed management practices affect the grain yield of transplanted spring rice.

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“…Rice cultivation in Nepal encompasses diverse ecosystems, ranging from irrigated and shallow lowlands to mid-deep lowlands, deep water, and uplands (Patel & Ghosh, 2019). However, weed infestation poses a significant biotic constraint to rice production, especially in developing countries like Nepal, where subsistence farming is prevalent.…”

Section: Introductionmentioning

confidence: 99%

“…Weeds compete with rice for nutrients, light, water, and space, causing approximately one-third of the crop loss. The dominance and rapid growth of weeds reduce the crop's yield potential, resulting in an annual loss of 15 million tonnes due to weed competition (Patel & Ghosh, 2019). According to Veeraputhiran & Balasubramanian, 2014, 45-51% yield reduction was caused by weeds in transplanted rice.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Different Weed Management Practices on Growth and Yield of Spring Rice under System of Rice Intensification (SRI) in Bara, Nepal

Niraula

Karki

2023

J. Plant Prot. Soc.

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A field experiment was conducted during the spring season of 2022 to determine the effects of various weed management practices on production and productivity of transplanted spring rice under System of Rice Intensification (SRI) at Kolhabi, Bara, Nepal. The experiment was laid out in a single-factorial Randomized Complete Block Design (RCBD) with five treatments and four replications. The treatments consisted of pretilachlor 50% EC (dose: 500 g a.i. per ha) as preemergence herbicide, pretilachlor 50% EC (dose: 500 g a.i. per ha) plus hand-weeding at 20 and 40 DAT, hand weeding at 20 DAT, 40 DAT & 60 DAT, conoweeding at 20, 40 & 60 DAT and weedfree or control. The plot treated with conoweeding recorded a significantly higher plant height (108.90cm), higher number of tillers/m2 (486.19), and higher number of grains per panicle (211.19) at 90 DAT. The sterility percentage and the number of grains per panicle were not affected by the weed management practices. Conoweeding was found statistically superior in terms of grain yield (7.12 mt/ha) and straw yield (9.77 mt/ha). The experiment concluded that the weed management practices affect the grain yield of transplanted spring rice. Though herbicide is considered as the economical and effective source of weed management practices, higher yield was obtained in the cono-weeded plots.

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Yield Improvement of Kharif Rice by Different Weed Management Practices

Cited by 3 publications

References 0 publications

Weed Management in Transplanted Paddy in Wetlands under Water Shortage with Alternate Wetting and Drying System of Irrigation

Weed Management in Transplanted Paddy in Wetlands under Water Shortage with Alternate Wetting and Drying System of Irrigation

Performances of Transplanted Spring Rice Under Different Weed Management Techniques in Kapilbastu, Nepal

Efficacy of Different Weed Management Practices on Growth and Yield of Spring Rice under System of Rice Intensification (SRI) in Bara, Nepal

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