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Khaliq A., Matloob A. Germination and growth response of rice and weeds to herbicides under aerobic conditions. It has wide potential use for total weed control in agriculture.
herbicide upl saathi herbicides bighaat Across the locations, all weed control treatments provided significantly higher return over variable cost (ROVC) and B:C ratio compared to weedy check. Azimsulfuron effectively controls wide variety of weeds, including broadleaved and sedges like Cyperus rotundus and Dactyloctenium spp. In DSR systems, dry rice seeds are sown with or without tillage and irrigation is applied periodically to maintain soil at field capacity. Water management in northern states and the food security of India. Water Management and Weed Science Research in Rice. The Hira G.S. %PDF-1.4
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List of weed species at experimental locations, Haryana, India. The crop was harvested in the second week of November, 2010, at both sites from two spots (11m and 33m) area per treatment for accuracy and averaged. Bispyribac-sodium was inferior to azimsulfuron in controlling broadleaved weeds and resulted in lesser yield at this location.
force jat emergence Site-Year and its interaction effects were non-significant (Table9), therefore data were pooled for both sites (Table10). In current study, the net gain in returns in DSR with herbicides over manual weeding was just US$31 (averaged over two locations). The cost of sequential application of herbicides in DSR ranged from approximately US$60 with single PRE and POST to US$90ha1 for PRE and tankmix POST applications compared to US$175 US$190ha1 ($1 = Rs 45.68) in hand weeding in weed-free plots.
Maximum weed biomass reduction (8291%) was observed with the sequential application of pendimethalin PRE fb bispyribac-sodium+azimsulfuron POST at 45 DAS. Herbicides included in the study were butachlor (Butaveer, Chambal Fertilizers & Chemicals Ltd.), oxadiargyl (Topstar, Bayer Crop Science), pendimethalin (Stomp, BASF India Ltd.), bispyribac-sodium (Nominee gold, PI Industries), and azimsulfuron (Segment, Dupont India Ltd.). However, azimsulfuron causes significant injury at higher rates (25g ai ha1) to scented cultivars (scented basmati rice) as evident from current study. Khaliq A., Matloob A. Weed crop competition period in three fine rice cultivars under direct seeded rice culture. 0000023430 00000 n
The tankmix application of bispyribac+azimsulfuron increased broad-spectrum weed control (grass and broadleaved) but at the same time also increased total cost of herbicide application.
Container and/or fields must be weed-free before applying preemergence herbicides.
The treatment with single application of oxadiargyl PRE or bispyribac-sodium POST had 16 and 11 broadleaved weeds m2, respectively, and showed 2761% reduction in weed density compared to 6482% reduction in weed density achieved with the sequential application of PRE fb POST herbicides. Pendimethalin (1000g ai ha1; PRE) was applied on the 3rd day of irrigation (field capacity) as a standard PRE practice in all treatments and azimsulfuron was applied at 25 DAS. Improving the Productivity and Sustainability of RiceWheat Systems: Issues and Impacts. The reduction in density of grasses, broadleaved weeds, and sedges was similar in all the treatments with sequential POST applications of the herbicides and significantly lower densities were observed compared with single PRE application of oxadiargyl and weedy check treatment.
about navigating our updated article layout. of Agronomy and Horticulture, University of Nebraska-Lincoln, NE 68583, USA, dQueensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Toowoomba 4350, Australia. In addition, DSR matures 710 days earlier than the PTR rice allowing timely planting of the succeeding wheat crop (Giri, 1998, Singh etal., 2006). In dry seeded rice, the herbicide treatments were effective in reducing weed density and biomass by more than 75% on an average. 0000023471 00000 n
Biomass (dry weight basis) reductions following PRE herbicide application were identical with all PRE herbicide treatments, with values in the range of 2.44gm2 compared to 10.3gm2 in weedy check. In this situation, use of herbicides is becoming more popular in DSR because they are more effective, easy to apply, provide selective control, saves on labour and costs less. Applying oxadiargyl by mixing with sand onto flooded field was less effective than spray applications in non-flooded field. 5 Reasons Why Your Poultry Needs Beak Trimming, Principles and Benefits of Crop Rotation in Agriculture, The Best Management Practices For Insect Pests, Fish Farming: Setting Up An Aquaculture System, Precision Agriculture: Diving Into The Future of Farming, Pig Production: Preventing and Managing Disease Outbreak. One of the factors behind migration of labour to cities is the implementation of the Mahatma Gandhi National Rural Employment Guarantee Act-2005 which guarantees 100 days of work to all unemployed people in rural India (Anonymous, 2014). On farm strategies for reducing water input in irrigated rice: case studies in the Philippines. Other benefits of DSR include faster and easier planting, improved soil health, higher tolerance to water deficit, less methane emission, and often higher profit in areas with an assured water supply (Datta, 1986, Kumar and Ladha, 2011, Pathak etal., 2009).
herbicide emergence Chauhan B.S., Ahmed S., Awan T.H., Jabran K., Sudheesh M. Integrated weed management approach to improve weed control efficiencies for sustainable rice production in dry-seeded systems.
Site-Year and treatments were considered as the fixed effect and blocks nested in site-year, were treated as the random effect. It was observed that the efficacy of oxadiargyl is reduced with sandmix application compared with spray application. 0000007359 00000 n
CSR 30 (superfine, scented) was more sensitive to higher rates (35g ai ha1) of azimsulfuron as compared to Pusa 1121 (fine, scented). Fortunately, most weed seeds germinate in the top inch of the soil. However, the single application of bispyribac-sodium POST resulted in higher grain yield compared to oxadiargyl PRE at both the locations. y!L!08qyb$ukZp~ 0 g
Bispyribac-sodium was inferior to azimsulfuron in controlling broadleaved weeds and resulted in lower yield at this location. Butaforceis a chloroacetanilide class herbicide known for its pre-emergent activity on weeds/soil. Visual injury was recorded at 21d after azimsulfuron application (45 DAS) with reference to non-treated weed free plot for each cultivar in the respective block.
Rice (Oryza sativa) is a major cereal crop and staple food for more than half of the world's population. Azimsulfuron applied at 35g ai ha1 reduced yield in both cultivars but in CSR 30 yield reduction was twofold (11.5%) as that of Pusa 1121 (5.2%). Proc. Rice cultivar tolerance to different rates of azimsulfuron in dry-direct seeded rice, experiment 2 (20102011).
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Chauhan B.S., Abugho S. Weed management in mechanized-sown, zero-till dry-seeded Rice. There is evidence that water scarcity prevails in IGP (Tuong etal., 2005) and labour costs have increased dramatically due to migration of rural labour to cities (Chauhan, 2012) as well as other non-agricultural sectors of rural economy. Many weeds germinate within days of receiving optimal environmental conditions. Not to be sprayed in windy conditions (above 15km/hr). Azimsulfuron was commercialized in India in 2012. The results suggest that herbicide treatments were effective in reducing weed density and biomass by more than 75% on an average, and reduced the weed competition for resources and space to the crop. *General ground coverage (45 DAS) by weeds in non-treated area at respective locations are given in parentheses ( ). The puddled soil ensures good crop establishment, weed control with standing water, and reduces deep-percolation losses (Sharma etal., 2003).
herbicide bighaat Control of early weeds (annual and perennial broad-leaf weeds and grasses).
Across the locations, higher yields were recorded from sequential application of herbicide treatments compared with single application of oxadiargyl PRE or bispyribac-sodium POST. Returns over variable cost will be a driving force for farmers in adopting DSR and achieving better weed control in future. Walia U.S., Bhullar M.S., Nayyar S., Walia S.S. Control of complex weed flora of dry seeded rice (, http://a-c-s.confex.com/crops/2009am/webprogram/Paper53386.html, Oxadiargyl (sandmix) fb bispyribac-sodium, Pendimethalin fb bispyribac-sodium+Azimsulfuron, Post-harvest charges (Market charges/Transportation), Miscellaneous (Tractor operations/Repair etc), Pendimethalin fb bispyribac-sodium+azimsulfuron. Do not allow spray mist to drift onto desirable vegetation. Two sequential foliar sprays of 1% FeSO4 were applied at 40 and 47 DAS, though only the Madhuban location showed iron deficiency at this stage. Received 2015 Feb 21; Revised 2015 Dec 26; Accepted 2015 Dec 28. JMP Software V. 11 Procedure Guide. For more information on our shipping options, click here. In: Hobbs P.R., Bhandari Raj, editors.
selective broad emergence weeds leaved herbicide early control maize wheat rice amine limited 0
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groundnuts emergence herbicide maize inhibiting soybean The soil type at both Taraori and Madhuban village was sandy clay loam in texture. Tuong T.P., Bouman B.A.M., Mortimer M. More rice, less water-Integrated approaches for increasing water productivity in irrigated rice-based systems in Asia. Butachlor performed better in controlling grasses compared with oxadiargyl. 0000007761 00000 n
Weed ecology and weed management strategies for dry-seeded rice in Asia. The general ground coverage by weeds (45 DAS) at Taraori was 50% (20% grassy weeds; 20% broadleaved weeds and 10% sedges) whereas, plots at Madhuban were dominated by broadleaved weeds with ground coverage of 50% followed by grassy weeds (15%) and sedges (5%) (Table2). All inputs (pesticides/fertilizers/seeds) for each site were purchased from same source. 0000002114 00000 n
Return over variable cost with manual weeding is one of the major concerns of farmers in process to adopt DSR in South Asia. 0000003145 00000 n
emergence albasa Rice-wheat is the major cropping system of the region and popularly known for basmati/scented rice cultivation. The https:// ensures that you are connecting to the Plots were kept weed-free throughout the season using hand weeding. About 90% of the world's rice is produced and consumed in Asia (FAO, 2014). Symptoms develop more quickly allowing cultivation intervals to be reduced. At both sites application of bispyribac-sodium after pendimethalin PRE provided significantly higher ROVC and B:C compared to its application after oxadiargyl PRE. 0000006209 00000 n
Moreover, the use of fenoxaprop or other weed specific herbicides either in tankmix with bispyribac-sodium and azimsulfuron (Chauhan etal., 2015, Mahajan and Chauhan, 2015) as early POST or at later stage for effective weed control, would further increase the herbicide application cost. However, at Taraori highest yields of 3.3 and 3.4tha1 were obtained with the sequential application of pendimethalin PRE fb either bispyribac-sodium or bispyribac-sodium+azimsulfuron POST, respectively; but none of the herbicide treatments had yield comparable with 3.6tha1 obtained in weed-free treatment (Table7). 20th Asian Pacific Weed Sciences Society.
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Maximum numbers of effective tillers (398-446m2) were observed in the weed free treatment and as expected, minimum numbers of effective tillers (112-162m2) were recorded in non-treated weedy plots across the locations.
grasses seeded transplanted However, at Taraori, yields were similar with pendimethalin or oxadiargyl PRE fb bispyribac-sodium and/or azimsulfuron POST. Direct-Seeding of Rice and Weed Management in the Irrigated Rice Wheat Cropping System of the Indo-Gangetic Plains. trailer
It is also extensively used in the form of granules in rice as a post-emergence herbicide. One bottlecap to 60ml of water for reconstitution. Similarly, all PRE herbicide treatments resulted in similar control of broadleaved weeds and sedges.
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