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Vodič za poljoprivrednike

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Provincial Secretariat for Urban Planning, Construction and Environmental Protection
Provincial Secretariat for Urban Planning, Construction and Environmental Protection
European Affairs Fund of Autonomous Province of Vojvodina
European Affairs Fund of Autonomous Province of Vojvodina
City of Sombor
City of Sombor
Local Government of Baja
Local Government of Baja
dobri susedi

Selection of herbicides by crops

  • Chemical suppression is used on surfaces where mowing is not possible, by using herbicides which are toxicologically and eco-toxicologically favourable and have no negative effects on humans and the environment. Preconditions for high efficiency of herbicides are: quality seedbed preparation, the right choice of herbicides, its quantity and enough rainfall for activation. Herbicides and their quantities need to be chosen according to the type of weed present, the texture of the soil and humus for every individual plot.
    Based on the efficiency in weed suppression herbicides are divided like this:

    • Good suppression 90-100%
    • Satisfactory suppression 75-90%
    • Weak suppression <75%

    CROPS:

    MAIZE - nothing can replace the basic herbicides after planting and before emergence. Protecting crops after maize and weed emergence is considered to be a back-up solution in case the treatment after planting and before emergence does not succeed. The maize and the weed first need to emerge and then the soil can be treated while strictly taking care that the development stage of the maze is respected because if the treatment is done after the stage where it is allowed, it can cause damage to the maize.

    Research has shown that all weeds can be kept under control like this, a lot of weeds are easier to suppress after they emerge, the products used after emergence are more expensive than the soil herbicides, but in many cases they turn out to be cheaper. What is it really about? If you use soil herbicides and the spring is dry, they will not work well because in order to work well they need moisture. In that case, we reinforce it with herbicides which affect the plant through the leaves and are used after the emergence of both the maize and the weeds, therefore herbicides are bought two times and that kind of treatment is more expensive than initially deciding on the herbicide used after the emergence of the maize and weeds.
    Good suppression: acetochlor, acetochlor+67AD, acetochlor+ dahemid, acetochlor+dichlormid, dimethenamid, flufenacet-atrazine, flumetsulam, izoxaflutol, bentazone-sodium+dicamba-potassium, dicamba, dicamba+rimsulfuron, fluroxypyr, foramsulfuron+izoxadifen-ethyl, clopyralid, prosulfuron+primsulfuron-methyl.
    Satisfactory suppression: flufenacet+mertibuzin, primsulfuron-methyl.
    Weak suppression: alachlor, alachlor-atrazine, alachlor linuron, atrazine-prometryn, linuron, rimsulfuron, thifensulfuron-methyl.

    SOYBEAN - since soybean is a wide row crop and low habitat plant weed issue is present from the emergence to the harvest, therefore weed suppression should be addressed in that manner, that is, the use of herbicides PRE EM, POST EM and the crops often need to be weeded.
    Good suppression: acetochlor, acetochlor+AD-67, acetochlor+dahemid, dimethenamid, metribuzin, fomesafen, imazamox, oxasulfuron.
    Satisfactory suppression: flufenacet+metribuzin, imazamox
    Weak suppression: alachlor, alachlor+linuron, imazetapir, linuron, prometryn, thifensulfuron-methyl.

    SUGAR BEET- resistant weeds in sugar beet are best suppressed in post application and in split application. Using this way of suppression, sugar beet is relieved of competition in weeds in the most sensitive stages, which provides successful germination. The best results are with herbicides based on phenmedipham and desmedipham with metamitron. Dose of the product and the application time is determined based on the size of the weed.

    SUNFLOWER - Primary herbicide application is after sowing before the germination. It is recommended to use double herbicide combinations which will allow simultaneous suppression of both annual narrow-leaved weeds and wide-leaved, small-seeded weeds. With these soil herbicides we can treat only tracks in the plant zone (20-25 cm), while weeds in the inter row are suppressed mechanically with 2 obligatory inter row cultivations. In this way we achieve significant savings in herbicides, because to treat one track takes 1/3 of the total quantity of herbicides necessary for the treatment of the entire surface. The treatment is applied together with the sowing or using specially adjusted sprinklers after the sowing and before the germination.
    Good suppression: acetochlor, acetochlor+AD-67, acetochlor+dahemid, acetochlor+dichlormid, dimethenamid.
    Satisfactory suppression: oxyfluorfen
    Weak suppression: alachlor, alachlor+linuron, linuron, prometryn.

    POTATO
    Good suppression: acetochlor, acetochlor+dahemid, dimethenamid, metribuzin
    Week suppression: alachlor+linuron, prometryn, rimsulfuron.

    CANOLA
    Good suppression: clopyralid
    Weak suppression: alachlor

    WHEAT
    Good suppression: dimethenamid, metamitron, desmedipham+phenmedipham, clopyralid, metamitron, triflusulfuron-methyl (combined with products based on desmedipham, phenmedipham, ethofumesate, metamitron and their mixes)

    BEANS
    Good suppression: imazamox
    Satisfactory suppression: imazamox
    Weak suppression: imazethapyr

    PEAS
    Good suppression: imazamox
    Satisfactory suppression: imazamox
    Weak suppression: imazethapyr

    STRING BEANS
    Weak suppression: imazethapyr

    LUCERNE
    Good suppression: imazamox
    Week suppression: imazethapyr

    BARLEY
    Good suppression: bentazone-sodium+dicamba-potassium, bentazone-sodium+MCPA-postassium, iodosulfuro-methyl-sodium+amidosulfuron+mefenpyr-diethyl, clopyralid, mecoprop-p

    BIRSDFOOT TREFOIL
    Weak suppression: imazethapyr

    CARROT
    Weak suppression: linuron

    TOBACCO
    Good suppression: methyl bromide-chloropicrin

    TOMATO
    Good suppression: metribuzin

    CABBAGE
    Satisfactory suppression: oxyfluorfen

    ONION
    Satisfactory suppression: oxyfluorfen

    SMALL GRAINS
    Good suppression: dicamba, fluroxypyr, glyphosate

    FRUIT AND GRAPEVINE
    Good suppression: fluroxypyr, glyphosate
    Satisfactory suppression: oxyfluorfen
    Weak suppression: alachlor+linuron

    RUDERAL HABITATS - (CHANNELS, MEADOW, PASTURES)
    Good suppression: glyphosate, glufosinate ammonium, simazine. All herbicides used for crops are applicable but in larger quantities.

     

 
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