Effect of crop establishment methods and weed management practices on yield and yield attributes of rice (Oryza sativa L.) under temperate conditions of kashmir

Nazir, Aijaz; Bhat, M. Anwar; Bhat, Tauseef A.; Fayaz, Suhail; Bahar, Fayaz Ahmed; Mohi-ud-din, Rehana

doi:10.5958/0974-4517.2021.00023.9

Cited by 6 publications

(17 citation statements)

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“…Under SRI method increase in plant height and other growth parameters, namely, LAI might be responsible for higher dry matter production. Several researchers demonstrated similar results, such as Nazir et al (2020) reported that significantly lowest weed density and weed dry weight were recorded with the transplanted method as compared to SRI and DSR.…”

Section: Discussionsupporting

confidence: 55%

“…Among the different herbicides, significantly taller plants were recorded in plots treated with penoxsulam herbicide with an increase of 4.7% and 4.6% in plant height as compared to WC treatment, respectively, during 2017 and 2018. Better weed control by penoxsulam herbicide results in better nutrient uptake by O. sativa (Nazir et al., 2021). Wider spacing under SRI encourages better aeration due to controlled water application and frequent weeding encourages extensive, profuse, and vigorous plant growth and thus increases the root volume resulting in enhanced ground cover thereby protecting the soil from runoff and erosion.…”

Section: Discussionmentioning

confidence: 99%

“…Penoxsulam herbicide achieved significantly highest LAI than the rest of the herbicide treatments, whereas a significantly minimum LAI was recorded by WC treatment at all the intervals. Shading to lower leaves of the crop due to weeds caused their senescence and death and due to herbicidal application reduction in weed growth favored the crop to get good light supply, water, and nutrients resulting in higher LAI (Shan et al., 2012). Higher SPAD values under SRI are possible because of improved macronutrient absorption.…”

Section: Discussionmentioning

confidence: 99%

“…Weeds get a better chance to grow under SRI as flooding is not followed continuously and O. sativa plants are spaced widely. Therefore, under SRI effective weed management practices are mandatory (Farooq et al., 2011; Nazir et al., 2020). Various pre‐ and post‐emergence herbicidal sprays are being used in O. sativa for controlling weeds effectively.…”

Section: Introductionmentioning

confidence: 99%

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Impact of crop establishment techniques and weed management practices on Oryza sativa L. growth and yield

Nazir

Bhat

et al. 2023

Agronomy Journal

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Due to increased demand, labor costs, and water scarcity, farmers look for an alternative way of rice cultivation under prevailing conventional transplanting. Direct‐seeded Oryza sativa and system of rice intensification (SRI) have been developed as superior substitutes to transplanting. However, if weeds are not controlled properly, the direct seeding method faces serious weed infestation and yield losses. In this context, a field study was undertaken during kharif growing seasons to evaluate the growth and yield of O. sativa under various crop establishment methods and weed management practices. The results revealed that system of rice intensification (SRI) method of crop establishment significantly produced taller plants, higher dry matter accumulation, a greater number of tillers per meter square, highest leaf area index, yield attributes, namely, panicle density, panicle length, and grains per panicle, and higher grain and straw yield over direct seeded rice (DSR) and transplanted O. sativa. Among the various weed management practices, penoxsulam produced significantly higher grain and straw yield. The results demonstrated that average grain yield increase with SRI was reported to be 24.11% and 23.62% over DSR and 10.47% and 12.23% over transplanted O. sativa. Among various establishment techniques, lower weed density and dry weed biomass were achieved by transplanting O. sativa. Penoxsulam herbicides significantly reduced the weed density and dry weed biomass but penoxsulam herbicide demonstrated significantly the maximum reduction in number of weeds per meter square and dry weed biomass and proved superior against complex weed flora.

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of crop establishment techniques and weed management practices on Oryza sativa L. growth and yield

Nazir

Bhat

et al. 2023

Agronomy Journal

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“…The maximum share of NPK removal of weeds was revealed in delayed sowing, i.e., 3rd June (7.73%) as compared to the earlier 10th May sowing (4.52%). Among weed management strategies, a higher contribution in the removal of NPK by weeds was noted in the control treatment, while the lowest contribution was revealed in the sequential application of BSM + pretilachlor PE fb 2,4-D PoE (4.17%) due to an effective control of weeds. − …”

Section: Discussionmentioning

confidence: 99%

Influence of Sowing Time and Weed Management Practices on the Performance and Weed Dynamics of Direct Drum Seeded Rice

et al. 2023

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Direct drum seeding has emerged as a viable and alternate substitute to the current transplanted rice to address constraints of labor and water scarcity as well as rising cultivation costs. However, heavy weed infestation is the main biological factor leading to immense yield loss, which requires immediate attention. Therefore, adoption of efficient weed management practice is critical for the success and widespread adoption of direct seeded rice. In this regard, an experiment was laid out at the Faculty of Agriculture, Wadura, SKUAST of Kashmir, India, in Kharif seasons of 2018 and 2019 to assess the efficiency of direct seeded rice (DSR) under two sowing dates (D1: 10th May and D2: 3rd June) and six weed management strategies (W1: weedy check (untreated check), W2: four mechanized conoweedings at 15, 30, 45, and 60 DAS (days after sowing), equivalent to weed free (four conoweedings, equivalent to weed free), W3: bensulfuron-methyl + pretilachlor @ 60 and 600 g a.i. ha–1 as pre-emergence (BSM + pretilachlor, PE), W4: oxyfluorfen @ 750 g a.i. ha–1 as pre-emergence (oxyfluorfen, PE), W5: bensulfuron-methyl + pretilachlor @ 60 and 600 g a.i. ha–1 as pre-emergence followed by 2,4-D @ 0.75 kg a.i. ha–1 as post-emergence (30–35 DAS) (BSM + pretilachlor PE fb 2,4-D PoE), and W6: oxyfluorfen @ 750 g a.i. ha–1 as pre-emergence followed by 2,4-D @ 0.75 kg a.i. ha–1 as post-emergence (30–35 DAS) (oxyfluorfen PE fb 2,4-D PoE) on growth characteristics, productivity, weed infestation, and nutrient dynamics. The pooled results showed that 10th May sowing recorded significantly higher values of growth characteristics viz. plant height, dry matter production, tiller count, and yield characteristics, including panicle weight, panicle length, filled grains per panicle, and test weight, as compared to delayed sowing (3rd June). Earlier sowing (10th May) produced significantly higher grain yield (7.33 t ha–1) and straw yield (8.99 t ha–1) when compared to the delayed sowing (3rd June) which produced a grain yield of 6.08 t ha–1 and straw yield of 7.93 t ha–1. Among weed management strategies, four mechanized conoweeding at 15, 30, 45, and 60 DAS resulted in enhanced growth, yield characteristics, and yield but was statistically similar to bensulfuron-methyl (BSM) + pretilachlor PE fb 2,4-D post-emergence (PoE). Delayed sowing (3rd June; D2) recorded significantly higher weed density and dry-weed biomass as compared to earlier sowing (10th May; D1). Among the herbicides tested, sequential application of BSM + pretilachlor PE fb 2,4-D PoE proved an efficient weed management practice with a significantly reduced population and dry weight of weeds. Therefore, it was concluded that 10th May sowing with four mechanized conoweedings or sequential application of BSM + pretilachlor PE fb 2,4-D PoE is promising for improving productivity and efficient weed control in direct drum seeded rice under temperate Kashmir conditions.

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Performance of Various Weed Management Approaches on Weed Dynamics, Yield Attributes and Yield of Puddled Rice under Different Planting Techniques

Sai,

Murugan,

Chakravarthy

et al. 2024

ASD

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Background: Rice is a major food source worldwide and direct seeding can shorten crop duration and reduce labour. The system of rice intensification (SRI) can boost yields with fewer inputs. Weed management is crucial for high yields, but chemical herbicides may not be necessary with SRI. A study evaluated herbicide performance based on rice establishment methods. Methods: An field experiment was conducted in January to May, 2021 (Navarai) to find out the efficient weed control techniques in puddled rice. The experiment has been carried out in split-plot design, which included two planting techniques viz., drum seeded rice and system of rice intensification (SRI) in main plot, as well as eight weed control techniques viz., hand weeding, cono weeding, pretilachlor, bispyribac sodium and fenoxaprop - p - ethyl as pre and post emergence application in sub plot. Result: The results of the experiment demonstrated that among the planting techniques and weed management practices tested, the system of rice intensification and sequential application of pretilachlor @ 0.5 kg a.i ha-1 fb bispyribac sodium @ 20 g a.i ha-1 has revealed lowest weed density and highest weed control efficiency, yield attributes and yield and energetics.

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Effect of crop establishment methods and weed management practices on yield and yield attributes of rice (Oryza sativa L.) under temperate conditions of kashmir

Cited by 6 publications

References 0 publications

Impact of crop establishment techniques and weed management practices on Oryza sativa L. growth and yield

Impact of crop establishment techniques and weed management practices on Oryza sativa L. growth and yield

Influence of Sowing Time and Weed Management Practices on the Performance and Weed Dynamics of Direct Drum Seeded Rice

Performance of Various Weed Management Approaches on Weed Dynamics, Yield Attributes and Yield of Puddled Rice under Different Planting Techniques

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