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Control weeds

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  • A field experiment was conducted at regional research station of Bidhan Chandra Krishi Viswavidyalaya, Chakdaha, Nadia, West Bengal during Rabi season, 2012-13 to find out the various effect for controlling weeds in Rabi wheat (PBW- 343) grown with recommended package of practices by the application of 2,4-D Dimethylamine 50% SL.

    pdf10p trinhthamhodang1213 29-05-2020 1 0   Download

  • As pigeonpea is long duration crop, many flushes of weed germinate at the later stages which compete with the crop. It is therefore, essential to use the post emergence herbicides in conjuction with pre emergence herbicides for the effective control of weeds.

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  • This study was conducted on the lentil cultivar Malazgirt 89 during 1999 and 2000 to determine the most appropriate method for controlling weeds.

    pdf8p masterbarista 14-01-2019 11 0   Download

  • A field experiment was conducted during 2017-2018 at N. E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, to study the integrated weed control option for dry Direct seeded Rice under irrigated ecosystem.

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  • It was examined that weeds cause a lot of problems in the crop field. Weeds compete with the main crop for nutrients, water, food, space, sunlight etc. Weeds utilize the nutrients provided to the main crop and sometimes dominate the main crop. Some weeds are very noxious and they are harmful for both humans as well as animals. It is clearly revealed from studies done in field of weeds that use of herbicides used to control weeds cause many effects on soil as it leads to degradation in the quality of soil, water as well as it pollutes environment.

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  • Testing techniques to reduce weed infestation is a crucial step in developing direct tree seedling systems. The use of pre-emergence herbicides may be an alternative to manual weeding techniques, but so far, information on how they affect native tree species based nurseries is scarce. We established an experiment to know the major weed flora and evaluated the effect of pre and post emergent herbicide on weed suppression of secondary nursery of Tectona grandis and Pterocarpus santalinus.

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  • A field experiment was conducted at College of Horticulture, Munirabad, Koppal district of Karnataka which falls under Northern Dry Zone of Karnataka, India for two consecutive kharif seasons 2014 and 2015 to find out most suitable and efficient combination of different pre-plant and post-emergence herbicides to control weeds in onion.

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  • Weed competes with a crop for nutrition, soil and water and, reduces its yields drastically. Conventional methods i.e. manual, mechanical and chemical mean have some limitations in controlling weeds. With the advancement in electronics and computers, Site-Specific Weed Management (SSWM) can provide a solution for precise weeds management. SSWM technologies with basic components and functions are described.

    pdf9p nguaconbaynhay4 22-03-2020 5 0   Download

  • Weeds are undesirable plants out of place and function as an uneconomic tax on the crop by taking the space required for the plant, absorbing the water and nutrients from the soil and by competing for other essentials like light, moisture etc. There are two methods generally employed for controlling weeds. viz., (i) Hand weeding, and (ii) Use of herbicides. In India, the first one is generally practiced by the farmers. This method is the most labour intensive and costly.

    pdf9p nguathienthan4 18-04-2020 4 0   Download

  • Rice is an important food crop extensively grown in India. Several factors are responsible for reducing the yield of transplant rice. However, weed infestation is the major threat to productivity of transplanted rice. Weeds by the virtue of their high adaptability and faster growth dominate the crop habitat and reduce the yield potential of the crop. These weeds could be controlled through manual and chemical methods. Manual method is though very common but cost intensive.

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  • A field experiments was conducted during Kharif seasons 2007 at Junagadh Agricultural University, Junagadh, Gujarat to study the effect of weed management practices on cowpea under rainfed conditions. It was found that single application of herbicide or cultural practices (1 HW + 1 IC) at 20-25 DAS not sufficient to control weed in cowpea and significantly yield loss 20-25% recorded, which is just half of around 45% yield loss in case no weed control measure followed. Application of (pendimethalin at 0.5 kg ha-1 as PRE + 1 HW + 1 IC at 25-30 DAS), (quizalofop- ethyl at 0.

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  • India is facing various challenges in agriculture sector for sustaining soil fertility and food grains production, besides environmental degradation and food security of the country in the event of ever increasing demands of food grains production with limited cultivable land. Cultivable land and maintaining its soil fertility are one of the major tasks which supports about 17.6% of its population and leads to fact that, our natural resources are under considerable strain. Food grains are a major source of energy and are thus are vital for food and nutritional security.

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  • Thus, there is need for selection of new molecules of preemergence to control weeds during initial crop period. Thus, there is need for selection of new molecules of pre-emergence to control weeds during initial crop period

    pdf9p chauchaungayxua11 23-03-2021 5 0   Download

  • This guide has over 190 pages of weed control information updated annually and tailored for Ohio and Indiana. In the guide you will find: Weed control response tables Herbicide information labeled in corn, soybean, sweet corn, popcorn, small grains, grass or legume pastures, and grain sorghum Rotation restriction tables

    doc197p thanhhoathanhhoa 10-05-2012 67 15   Download

  • Of the many books that have been written about weed management, most have focused on the use of herbicides. This volume is different. Instead of providing information about chemical weed control technologies, the emphasis here is on weed management procedures that rely on manipulations of ecological conditions and relationships. By focusing on ecologically based methods of management, we have been able to provide in-depth treatment of subjects that most weed science books treat only briefly.

    pdf545p phoebe75 01-02-2013 48 10   Download

  • Our goal in writing this book was to describe why weeds occur where they do. We have made no attempt to discuss their management and control: there are excellent texts available for that. Rather, we think that students should understand how and why weeds fit into their environment. This text presents ecological principles as they relate to weeds. Ecology is central to our understanding of how and why weeds invade and yet there are few books that make this connection. That is the niche we hope to fill.

    pdf312p phoebe75 01-02-2013 53 7   Download

  • Nowadays, chemical pesticides are the traditional solution to weed and pest problems, and although they have saved lives and crops, the greatest risk to our environment and our health comes from their use. Many significant problems from their use include con‐ tamination of the environment, the development of pesticide resistance in the target pest, the recovery of pest species, the phytotoxicity in crop fields, and the unacceptably high levels of pesticide/commodity residue in food.

    pdf214p lyly_5 22-03-2013 60 6   Download

  • Deficit plant nutrients, especially nitrogen, and weed competition are the most critical problems in organic farming. This research was carried out on research plots of the Agricultural Research and Extension Center of Atatürk University Agricultural Faculty during the cropping seasons of 2006–07, 2007–08, and 2008–09 under dry farming conditions.

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  • The present study was conducted during the growing seasons of 2005, 2006, and 2007 to determine the critical period of weed control (CPWC) in chickpea (cv. Aziziye 94).

    pdf10p vimb123 12-01-2019 13 0   Download

  • Forage legumes are frequently established with a companion crop such as a cereal crop for controlling weed invasion and high hay production. This study was conducted under irrigated conditions in order to determine the effects of the seeding rate and harvest stage of barley as a companion crop on the hay yield and plant density of red clover and the botanical composition of hay.

    pdf7p masterbarista 14-01-2019 16 0   Download

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