You can certainly buy such products, which are designed to destroy all the green on the lawn, that is, exposed and subjected to lawn grass, in which case you definitely get rid of the weeds, but also greatly damage the lawn.Even if to be very careful in applying this means all the plants that are herbicide was dying, and in their place are small or large plots of land with dead yellowed grass.And there will be no sense re-sow these areas with grass - it will not grow for a long time.
two most common component of herbicides - glyphosate and glufosinate is - ammonium.It is recommended to avoid the use of such substances for weed control on lawns, if there is no need to kill both weeds and grass lawn (it may be necessary to create a new lawn).
especially careful in dealing with weeds need to be in the dry summer months, when there is a peak temperature - in this period grows poorly as the lawn grass and weeds.
Let's take a closer look kinds of herbicides
First of all, you need to accurately determ
to control weeds in the lawn are two main types of herbicides: pre-emergence and post-emergence.As the name implies, the first kind of herbicides controls the germination of weed seeds before they seem on the surface.Such products are used either as solutions or in the form of granules.Usually after their application for effective action requires moderate watering.These products set the barrier at the surface, which kills weeds plants as they grow to the barrier.It is important to remember that these substances do not kill those seeds that did not germinate.Grain should begin to germinate, after which it will start to operate the barrier.Usually this type of herbicide used to control annual weeds.Such herbicides have a similar chemical structure but vary in intensity and duration of action.
widespread preparations containing trifluralin, pendimethalin and Bala.These herbicides include dinitroaniline, dithiopyr.However, these agents are not recommended, if you sow a new lawn or to re-sow the existing, as they are not selective (selective), that is, how they destroy weeds and lawn grass.
post-emergence products designed to control those weeds that have already germinated and visible on the surface of the lawn.This group of substances is also divided into two other categories: selective, nonselective.
first category drugs can selectively manage weeds without harming other plants growing on the same grounds.For example, such materials will help to cope with broad-leaved plants (eg, dandelions, white clover), leaving intact lawn grass or crack down on the grass, leaving broadleaf plants such as bushes or flower beds with perennials flowers.Such materials are sold mostly in liquid form: concentrates which must be diluted with water before spraying;in the form of sprays in special containers (container attached directly to the end of the hose and the substance is sprayed through the nozzle of the container), so the concentrate is diluted with water;ready-to-use solutions - the most suitable for the treatment of small areas of lawn.
Another form of selective control is the use of pre-emergence herbicides for the selective control of annual weeds (eg, crabgrass).Non-selective agents used to fight all the plants in the selected area.
post-emergence products for broadleaf weed control
In recent decades, products containing one or more chemicals such as 2,4-D, MCPP, MCPA, 2,4-DP (also known as dichlorprop) and dicamba have become especially popular, showing its effectiveness in the fight against broadleaf weeds.
intractable broadleaf weeds
weeds such as a saw, clover, chickweed, oxalis displayed using products containing triclopyr.This material is often used in combination with other chemicals, such as 2,4-D and MCPP for a broader range of treatment.
to control the growth of grass crabgrass and other annual grasses can use selective drugs.In combination with a substance often used metanearsonaty quinclorac - they are especially effective when used on young grass.The most common is the MSMA.These drugs should not be used at high temperatures and drought period.
Non-selective organic products
organic products show promising properties, so that they can be used as a non-selective herbicide.Ingredients include substances such as acetic acid, citric acid, garlic extract, clove oil, potassium salts of fatty acids. Most of them affect the integrity of the membrane of plant cells responsible for getting substances in plant cells.
Since these substances are contact, then they will have the greatest impact on young plants.The effect of these substances will be less effective for those weeds that have the ability to regenerate from the sockets, the roots and rhizomes.In these cases, efficient exposure can require repeated application of the substances.
When purchasing any material always read carefully the instructions on the package to know how long after treatment of the soil can be re-sow grass or other plants planted.