striker herbicide for ricemarble powder suppliers

These herbicides are nonselective and control a broad range of annual and perennial grasses, broadleaves and sedges. They usually are applied to the foliage, but are also effective in the soil. Nufarm acknowledges the Traditional Owners of Country throughout Australia and recognises the continuing connection to lands, waters and communities. Yes, very soon. Generally, pre-sowing/planting herbicides are non-selective which are applied to control prevailing complex annual and perennial weeds flora erstwhile to planting, particularly under the CA-based cropping system. In order to use Command in cotton, an organophosphate insecticide (Thimet or DiSyston) must be used in-furrow first. Since, the conservation agricultural (CA) based management practices (minimum/zero tillage) are the new emerging technologies growing an attention worldwide due to higher economic benefits, improvement in soil health and also found more environmental friendly by reducing greenhouse gases. By making research easy to access, and puts the academic needs of the researchers before the business interests of publishers. Similar grain yields were recorded when applied atrazine alone as pre-emergence 1.25 kg ha1 (6.7kg ha1) and atrazine 1.25 kg ha1 + glyphosate 0.5 kg ha1 (7.0 kg ha1) as tank mixture of pre-emergence. Overapplication or application at the wrong stage of development in corn can cause leaf rolling and crinkling, brace root malformation, sterile flowers, and missing grain (blasting). Newsletter Sign Up Buy Any Of These 10 Pre-Emergence Herbicides For Weeds Control, Apply the right type of herbicide, either pre-emergence or post-emergence. Earlier studies observed [38, 39, 40] that the critical period of weed control in maize ranges from 7 to 56days after seedling emergence. The risk of worker intoxication with pesticides and herbicides, depends on several factors as how they will be handled and used. Consult the label for further precautions. These herbicides do not destroy carotenoids already formed, but prevent the formation of new ones. If grass weeds are stressed and slow growing, these herbicides will be less effective. Herbicides in this category are very crop specific. 3. High soil pH increases the soil activity of sulfonylurea herbicides and the potential for rotational crop damage. Similar to previous study, a field research in the sandy clay loam soils of Kampasagar (Telangana, India)reported that when atrazine 1.25 kgha1 + paraquat 0.75 kgha1 were applied as a pre-emergence in tank mixture produced the significantly maximum grains cob1, cob diameter and 100 grain weight than other herbicides [61]. To be most effective, these herbicides should be applied to actively growing grass weeds. But further he suggested, the post-emergence herbicides, the mixture of tembotrione + atrazine was more effective in controlling all classes of weed flora at 40 and 60 DAS. For controlling weeds in crop field, farmers are generally adopting mechanical, cultural, biological and chemical control methods. Massinga etal., [51] reported that the yield reduction in maize could be 91% by competition if more than eight amaranth (Amaranthus palmeriS. Roots of perennial weeds are seldom killed because these herbicides do not usually translocate to the roots. Many new herbicides have more sophisticated selectivity that differentiates between several broadleaf and/or several grass plants. Leaf puckering is also a symptom on broadleaf plants. Broadleaf plants may have swollen and cracked hypocotyls. The broadleaf weeds are Marsilea minuta, Polygonum hydropiper, Galinsoga ciliata, Physalis heterophylla, Heliotropium indicum, Phyllanthus niruri, Euphorbia hirta, Jussiaea repens, Amaranthus spinosus, Amaranthus viridis, Spilanthes paniculata, Lindernia anagallis, Paspalum distichumetc. Target Annual Weeds: Igitaria sanguinalis, Setaria viridis, Eleusine indica, Avena fatua, Ceperus microiria, Galinsoga ciliata, Stellaria media, Polygonum lapathifolium, Chenopodium album, Sida spinosa, Abutilon theophrasti, Cassia tora, Amaranthus viridis, Solanum nigrum, Portulaca oleracea, Commelina communis, Capsella bursa-pastoris. Nicosulfuron is rapidly absorbed into the weed leaves and is translocated through the xylem and phloem towards the meristematic zone. How? This is quite laudable; but maize farmers face lots of problems, chiefly pest. Root inhibitors. The many long-term studies clearly indicated that if the proper weed management options adopted at initial 2years then the weed population significantly reduced with time under CA-based practices than conventional practices [17, 18, 19]. In the case of maize, the selective broadleaf herbicide is used because maize crop belongs to the grass family so any herbicide to be applied must be friendly to grasses but injurious to broadleaf weeds. Dinitroaniline herbicides applied postemergence to broadleaf crops may cause stunting. These herbicides are often described as bleaching herbicides because they cause new leaves to appear yellow or white. The earlier study found that if the pre-sowing herbicide is applied before planting and is incorporated in the soil with light tillage, the efficacy of the applied herbicides was found the maximum [54]. These traits make them less harmful to the environment when they are used properly. These herbicides bind tightly to soil clay and organic matter, so they have no residual, preemergence activity. Preemergence herbicides kill weeds shortly after they germinate or emerge through the soil surface. %PDF-1.6 % Selectivity may be as simple as controlling broadleaf plants but not grass plants. After successful pre-planting operations; which involve proper land preparation method, procurement of high yielding seeds and planting, a farmer expects optimum yield from his farm. 2. The root inhibitors are most effective on small-seeded broadleaf and grass weeds. Applying systemic herbicides shortly after cell membrane disruptors or organic arsenicals is not advised. Recently, a study conducted in a clay loam and sandy loam soils of Bangladesh as a weed management strategy in pre-emergence and post emergence combinations and results showed that the even application of both Pendimethalin and atrazine separately reduces the weed biomass, weed population at 30days after seeding which further provided better crop yield [58]. Worry no more. This new category of herbicides can be used at extremely low rates, controls both grasses and broadleaf plants, has soil and foliar activity, and is essentially non toxic to mammals and most non vegetative life forms. Home > Books > Maize - Production and Use, Submitted: April 21st, 2019 Reviewed: August 6th, 2019 Published: September 6th, 2019, Total Chapter Downloads on intechopen.com. How long does it take to see the effectiveness, I am really enlightened by this article thank you, This is very educative.thank you so much for that piece of infor, Nice article sir. Leaves absorb these herbicides quickly and within an hour they can not be removed by rain. The conservation agricultural (CA)-based new agricultural practices could overcome those above challenges. Earlier findings [55] showed that pendimethalin can be applied as pre-emergence to get maximum weed control efficiency and crop selectivity by decreasing the weed population and increased the maize grain yield over the weedy check field [56]. The judicious and right use of a different combination of herbicides as pre-plant, pre-emergence and post-emergence can provide effective and efficient weed control under CA system as well as conventional system [13]. [57] reported that when pre-emergence herbicides were applied immediately after seed sowing or pre-emergence, weed control efficiency was the maximum and also increased the maize yield. We are group of subsistence farmers, What kind of herbicide should I use in my maize farm. The most common symptoms for these herbicides are leaf and stem malformations. Whether you are producing agricultural crops or tending a lawn or home garden, weed control will be important to your success. Nairaland - Copyright 2005 - 2022 Oluwaseun Osewa. Chemical control with herbicides has been an important tool for managing weeds in crops and home landscapes for many years. Pre-emergence herbicides spray will control the weeds up to 25days after seeding and followed that post-emergence application depending on weed flora will take care to keep weeds below crop injury level. Leaf puckering is also a symptom on broadleaf plants. Because these herbicides are nonselective, it is very important to protect desirable plants from spray drift. Corpers Going From Ibadan To Kogilet's Meet Here, Re: Digital Agriculture Investment platforms/options in Nigeria, Re: Strick Your Weeds With Striker In Your Maize Farm, Strick Your Weeds With Striker In Your Maize Farm, Farmers Please Help Me Fill This Questionaire, https://docs.google.com/forms/d/e/1FAIpQLSe-fnbULAY-XO0BySil_OfeoJdOjjotcSG9QptMLd1EWqx1Rg/viewform?usp=pp_url, Re: Free Growing Guideline For Tomato, Cucumber, Pepper And Watermelon, Re: Longer Lasting Solution To The Stubborn Weeds, Re: Share Your Experience On Water Melon Farm. Overapplication or extended periods of cool, wet weather shortly after planting may sometimes cause injury to tolerant crops such as corn or sorghum. The herbicides Goal and Reflex have significant soil activity. Sir, In the USA, Atrazine has been used since 1958in several million hectares of maize field due to its low cost, control of a broad spectrum of broadleaf weeds, flexible application timing, and also can be used as both pre- and post-emergence in combination with several other herbicides. The enzyme to which they bind is abbreviated ALS or AHAS, so these herbicides are often called the AHAS/ALS herbicides. An individual plant may have dead tissue, yellow tissue, and green tissue at the same time. [32, 33]. Other problems such as disease, nutrient deficiency, and insect damage may mimic the effects of herbicides. Ojo siyaka. Join 35.000+ subscribers and get a new discount coupon on every Wednesday. Shohidul Islam, Nurislam, Sharif Ahmed, Khokan Kumer Sarker and Mahesh Kumar Gathala, Importance of tillage options on weed infestation in the crop field, Major weed species in association with maize, The critical period of crop-weed competition, Weed control in zero-till maize by chemical measures, Effect of pre-sowing herbicides on weed control of maize, Effect of pre-emergence herbicides on weed control in maize, Effect of post-emergence herbicides on weed control in maize, Precautionary measures during application of herbicides in the crop field. Currently, the present rates of many herbicides do not work properly against many weeds, due to their resistance against the target weeds. It can be applied to maize treated with carbamate insecticides against soil insect pests. Chemical compounds used to control weeds are called herbicides. Therefore, it is important to apply a new product to be available earlier than normal in order to maximize the contribution of residual weed control after crop emergence. There may also be stunting that persists until the soil warms enough to promote plant growth. Then, the maize can outwit the weeds. PLEASE HELP. Manual weeding is undoubtedly the best form of weed control; however, the high cost of manual weeding has discouraged its usage on large maize farms, thus, chemical control is the best substitute and has become more economical as it is equally effective and at low cost. CA is cost-effective and environmentally friendly; however, weeds are one of the key challenges in the system. Some herbicides move (translocate) within the plant. Weeds are pests to maize crops; they reduce the growth potential of the maize crop and conversely reduce the profit of the farmer. Thanks for reading. We are a community of more than 103,000 authors and editors from 3,291 institutions spanning 160 countries, including Nobel Prize winners and some of the worlds most-cited researchers. This weakens the stem and causes lodging. Please let me have the list of herbicides to control yam production,together with the right fertilizer to use. If true when should I apply after planting A carton contains 12 bottles of 1 Litre each. 08079903333 | 09087933333 | 07010889333 | 09060009843, approximately 75 days after transplanting and bear pendent, Long Slim Cayenne is a hot pepper ideally suited for home gardens. Millet and maize are grass family. Reddish blue pigmentation may also be observed on the stem sheath, leaf margins, and/or leaf blade. Kharif (Monsoon; JuneSeptember), Rabi (Winter; NovemberMay) and Kharif 1 (Spring; FebruaryJune). For hard to control weeds, a higher dose is recommended. Striker herbicide is a systemic selective post-emergence herbicide, used to control annual grass weeds, broadleaved weeds and perennials grass weeds in maize. If these herbicides are incorporated shallowly or applied preemergence, they sometimes cause callus tissue (tumors) to form on the plant stem at the soil surface. Best regard. These symptoms can be found on cotyledons to the newest leaves of susceptible plants. 1.25 1.5 l/ha. Tillage systems affect the composition of weeds in a field [20]. The diphenylether herbicides act in a similar way but more slowly. Symptoms depend on the products mobility within the plant. The sequential application of pre-emergence followed (fb) protected spray of non-selective herbicide (Atrazine as pre-emergence at 1.25kgha1 fbParaquat 0.6kgha1 at 3weeks after sowing (WAS) or Pendimethalin as pre-emergence at 1.5kgha1 fbParaquat 0.6kgha1 at 3 WAS) produced the significantly higher yield than weedy check [60]. Weed plants compete with maize for their essential growth resources like water, nutrients, space etc. Dinitroaniline herbicides applied postemergence to broadleaf crops may cause stunting. The bipyridylium herbicides require thorough plant coverage to be effective, and they have no soil activity. Phenoxy growth regulator herbicides have the least plant activity and soil residual activity; the carboxylic acids generally have the most. Cell Membrane Disruptors and Organic Arsenicals, Herbicides: How They Work and the Symptoms They Cause, https://www.youtube.com/watch?v=Wc8xY2YuOfM. Root systems appear stubby and thick, especially the lateral roots. The role of herbicides is not only control the weeds timely and effectively, but also offer a great scope for minimizing the cost of production [10]. Please advise me on types of post emergence herbicides for maize, soya beans and Beniseed. Application of herbicides after the emergence of maize and weed are well-known as post-emergence herbicides. Therefore, it is an important to must follow the safety and health management guidelines while working and using the herbicide at all steps as set out by the industrial hygiene [67]. A pre-emergence herbicide like Atrazine is best for use. Earlier findings [62] revealed that pre-emergence herbicides pendimethalin and atrazine reduced the grassy and broadleaves weed population to a significant extent and among the pre-emergence herbicides, later (atrazine) resulted in a higher reduction in grass weed population at the early stage (20days after seeding) than former (pendimethalin). Plants die because they cannot take up enough water and nutrients to sustain growth. This is a good method for best maize yields. Overapplication or extended periods of cool, wet weather shortly after planting may sometimes cause injury to tolerant crops such as corn or sorghum. Pre-planting, pre and post-emergence herbicides either in sequential or tank mixture will be taken care of all types of weed flora an ideal means in view of economics and usefulness in maize [17, 31, 32]. Therefore, herbicides should be carefully selected considering the toxicity, residual persistence in soil and water bodies as well as cropping systems. Half of the world maize is produced in the developing countries where maize grain is one of the major sources of food energy for the poor people and its plant biomass provides feed for animals [3]. When weeds invade a maize farm, the maize crops become less vigorous and several disturbing signs are seen on the crops. Be careful to prevent drift during application so that non target plants are not harmed. Many thanks you have been of great help! Symptoms develop slowly on grass plants and may not appear for 7 to 14 days. Your email address will not be published. Presently, more than 90% of maize is planted by manual dibbling following 56 intensive tillage, which increases the cost of cultivation. Atrazine as pre-emergence followed by (fb) tembotrione + atrazine as post-emergence found best combination and this combination reduced the weed dry matter to the tune of 98.7 and 97.9% at 40 and 60 DAS, respectively which ultimately resulted in significantly higher grain yields (11.57tha1) with maximum net returns. Consult the individual product label for specific recommendations. When applied over cotton to control grasses or cocklebur, they sometimes cause speckled leaf burn and red stems on the cotton plants; however, this has little effect on overall growth. Mackecknie Gold For Your Fungicide Solution In Cocoa. Committed to improving agriculture we have come up with an organic chemical which is safer for the storage of your farm products. From a hectare of land, if all agronomic practices are done judiciously, a farmer should get at least 6tons of maize after harvesting. In the other hand, the perennial weeds are more prominent initially in CA-based tillage but also broadleaf weeds may be prominent due to the light-weight and density of seeds which remain on the surface facilitate for conducive germination environment. Please can we identify ourselves going to no Go camp from ibadan? Shoot inhibitors. In broadleaf plants, the center vein (midrib) may draw in the leaf edge in a drawstring effect. There may also be stunting that persists until the soil warms enough to promote plant growth. Recent projection indicates that by 2020 the demand of maize in all developing countries will overtake the demand of wheat and rice [2], with Asia accounting for nearly 60% of the global demand for maize. Large-seeded weeds and crops generally survive normal dosages because their roots and shoots grow through the herbicide treated zone in the soil. Product Type: Striker Crop oil concentrate or some other type of adjuvant must be used to increase herbicide uptake into the leaf. Maize plays a prominent role in livestock nutrition as it is the best energy source for livestock. That is why this group of herbicides is sometimes called the hormone herbicides. These herbicides are very versatile for weed control. Because these herbicides prevent the plant from producing fatty acids, membranes cannot form. Initial injury is seen where the newest leaves are developing. Symptoms caused by the shoot inhibitors are much different than those of the root inhibitors. It for cucumber,tomatoes,sugarcan e.t.c, For the best Chemical from start to finish for planting make use of. Amino acid synthesis inhibitors bind to a specific enzyme and prevent the development of amino acids essential to plant life. Generally speaking, herbicides are applied either preemergence or postemergence. Large-seeded weeds and crops generally survive normal dosages because their roots and shoots grow through the herbicide treated zone in the soil. Symptoms include leafing out underground, improper leaf unfurling (shepherds crooking), buggy whipping (tightly rolled leaves), and leaf crinkling. Re: Mackecknie Gold For Your Fungicide Solution In Cocoa. *Address all correspondence to: akbarhossainwrc@gmail.com;, tanjimar2003@yahoo.com. It is very important that the susceptibility of future rotational crops be considered before herbicides in this group are applied. While, the mechanical methods are still useful but are unable to effective control of weeds successfully due to the absence of right machinery [12]. Contains Nicosulfuron 40g/L liquid.Nicosulfuron is a broad spectrum herbicide that controls a wide range of maize weeds, also, both annual weeds and perennial weeds. These regions usually turn pale or yellow and then die. These herbicides can be divided into two groupsroot inhibitors and shoot inhibitors. Maize (Zea maysL.) It just 2weeks old and how do I apply it? As a result of long-term and continuous use, the atrazine was found in accumulation in food products, groundwater, and aquatic systems [64]. Plants treated with glyphosate or sulfosate turn yellow in 5 to 7 days, then turn brown and die in 10 to 14 days. It is packaged in 1Litre bottle. They are used to selectively control wide-leaved grasses such as crabgrass or dallisgrass in narrow-leaved grasses such as bermudagrass lawns. Therefore, initial weed management is an important phenomenon through integrated weed management approaches like stale seed-bed, mulch, and adjustment in planting dates, biological and mechanical control and effective combination use of herbicides. Please who has heard anything from thrive agric. Farmers are looking for the alternative crop of dry season rice called boro rice (winter rice) to diversify their cropping systems and maize is one of the most suitable crops to provide high yield and profit margin in a more sustainable way. They are always hardy and difficult to control; most times, farmers often use pre-emergence herbicide after planting to keep the weeds at bay for about 3months. Tembotrione alone also showed good control of grasses and broad-leaved weeds. In USA, it observed the most common broadleaves weed species in a maize crop were Chenopodium album, Asclepias syriaca, Ambrosia artemisiifolia, Physalis heterophyllaand Polygonum rensylvanicumand the most common grasses were Elymus repens and Setaria pumila[35]. Scientists found that application of two or more compatible herbicides use as a tank mixture are more effective to control broaden the spectrum of weeds including grasses, broadleaves, and sedges than a single application [11, 63]. Photosynthesis inhibitors are broadleaf herbicides, but also control annual grasses to some extent. Some formulations of Command are volatile and should be used with care. Although CA-based maize cultivation has many benefits, however weed infestation is one of the serious constraints that limits maize production though weed management is also a major concern in conventional production system. Thank u, I HAVE HARVEST THREE MONTHS OF RICE AND IT GET TO MONTHS NOW HOW CAN I CONTROL WEEDS ON THIS STAGE. Uncontrolled weed on a maize farm can out-compete maize crops for water, nutrients, and sunlight, causing farmers economic losses. 2. is the third most important cereal after rice and wheat, which is widely grown in the world and used as a primary staple food in many developing countries. In maize production, weed management is considered as an important agronomic measure for attaining the potential yield. 2019 The Author(s). These herbicides are widely used to control broadleaf weeds in grass crops such as wheat, corn, sorghum, forages, and turf grasses. If the insecticide is placed incorrectly or applied at the wrong rate, cotton may be injured. Herbicides are chemical compounds used to control weed species but could also phytotoxic to crops and harmful to animals through entering direct or indirect in food chain. List Of Herbicides Used For Weed Control On Maize Farm. 4. It will be very difficult to use Herbicide, hence, use manual or mechanical method. The steps are the ability to antedate, identify, diagnose, evaluate, and minimize the risks in the workplace. For the selective weed control of certain broadleaf and grass weeds. Herbicides in this category inhibit photosynthesis, the process by which all green plants convert light energy from the sun into sugars (food). The perennial weeds species dominant round the years but the seasonal weeds are different when maize grown in dry season (winter maize) and the major dominant weeds are Polygonum persicaria, Polygonum pensylvanicum, Polygonum orientale, Oldenlandia diffusa, Oldenlandia aquatic, Oxalis corniculate, Chenopodium arvensis, Physalis minima, Solanum nigrum, Hydrocotyle ranunculoides, Ageratum conyzoides, Medicago denticulate, Avena ludovicianaetc. Nicosulfuron is a systemic selective herbicide, displaying genera-selectivity. The seedling shoot growth inhibitors also act on newly germinated weed seeds. The effects of the bipyridylium herbicides are rapid. 2019 Agromint Ltd. All Rights Reserved. _W?&Gwp\d7#$We_}Iy("pe(;y~]}){5{M#Sq =?pzO] 7ns)C\CkxdE+o However, when a single herbicide is used for a long time for controlling the same weeds it may create resistance against the specific weed(s). Postemergence herbicides control weeds that are already growing and easily visible. So far, so good.No problem with this product at allIt is very effective and did what was expected. 8?|@U:k~o^ h"E K\AQRgqzsc#Xm|q*y!1sGm t#dB/-toi!1Wpk7H_~; Plant cells contain lipid membranes. In recent decades, maize an emerging as a cash crop for smallholder farmers because of its high yield potentiality due to favorable climatic conditions which allows maize production round the years in three seasons [4]. Symptoms for grasses include stunting, purple coloration, and root systems that develop a bottlebrush appearance. Another bipyridylium herbicide called Avenge is used in wheat and barley for selective postemergence control of wild oat. Herbicides in the benzothiadiazole, nitrile, phenyl-pyridazine, and amide families are not mobile within the plant and affect only treated leaves. By Elpiniki Skoufogianni, Alexandra Solomou, Georgios By Shikha Bathla, Manpreet Jaidka and Ramanjit Kaur, HeadquartersIntechOpen Limited5 Princes Gate Court,London, SW7 2QJ,UNITED KINGDOM, Akbar Hossain, Mst. We pay our respect to Aboriginal and Torres Strait Islander peoples; and to their elders past, present and emerging. Herbicides such as Buctril, Basagran and Tough are used as foliar, selective, postemergence products. While, number of repetitive tillage operations increase the cost of cultivation, fuel consumption and delays planting in two ways by repetitive tillage operations followed by manual sowing. In broadleaf plants stems curl, twist, and droop, while leaves are cupped, crinkled, or have a drawstring appearance caused by irregular growth at the leaf edges. All plants contain lipids, which are fatty acids essential for plants to function normally. How do I get rid of millet and leave Maize on the same farm which herbicide should I use? Yes, you can. Plants die because they cannot take up enough water and nutrients to sustain growth. (Get 30% off coupon today subscibers). The zero/strip-tilled/permanent beds or till the soil with fresh beds based crops production system is an alternate option through mechanized precision planting within a single pass. These other possibilities must be ruled out before herbicide injury is diagnosed. So, it should be rotated with the use of multiple herbicides with a different mode of action to avoid/delay weed resistance against specific weeds. Target Perenial Weeds: Sorghum haleoense, Agropyron repens, Cynodon dactylon, Cyperus rutundus. Notify me of follow-up comments by email. Therefore, we should be careful to know the residual effect of applied herbicides when using the as short term as well as long term. Plants are very early maturing. Active ingredient(s): 240g/L Oxyfluorfen 608g/L Liquid hyrdocarbon (solvent 100g/L N-methyl pyrrolidone 2187 0 obj <>stream Without carotenoids, chlorophyll is destroyed. Grasses weed species during Kharif season in the maize field in EGP are Echinochloa colona(L.), Digitaria ciliaris(L.), Leptochloa chinensis(L.), Dactyloctenium aegyptium, Cynodon dactylon, Echinochloa crus-galli, Eleusine indica, Setaria viridis, Panicum javanicum, Paspalum commersoniietc. That means they are applied either before or after weeds emerge from the soil and begin to grow. Some herbicides act on seedling weeds shortly after they germinate and before they emerge. Other studies also reported [41, 42, 43, 44, 45, 46], the critical period usually corresponds for maize up to 810 leaf stages. Women Participation in Post-Harvest Processing of Bangladesh Wheat and Maize Research Institute (BWMRI), Bangladesh, Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Bangladesh, Bangladesh Office, International Rice Research Institute, Bangladesh, Irrigation and Water Management Division, Bangladesh Agricultural Research Institute (BARI), Bangladesh, International Maize and Wheat Improvement Center (CIMMYT), Bangladesh. Thank you for the article. Another earlier findings [26] observed that nutrients uptake by crops under CA systems was enriched when weeds was in CA-system were reduced. The Eastern Gangetic Plain (EGP) as known for high weed seed bank in soils especially lower EGP (Bangladesh and West Bengal) due to flash and steady floods bring weed seeds from distance in their catchment areas. Click for a hub of Extension resources related to the current COVID-19 situation. 1. For that reason they may be less effective when plants are dusty or when application water is dirty. All rights reserved. Therefore, long term basis continuous use of the same herbicide should be avoided. Most herbicides can be harmful, even to normally tolerant plants, if the dose is too high. Send me more details. Weed management strategies are the key to success of the conservation agriculture based crop production especially at the beginning of 2years.