Fighter measures

Explanation task

System Action weeds should cover all aspects of the manifestation of their hazards and biological properties. This is most appropriate system of integrated control measures.

It consists of preventive and destructive activities

Make a quarantine against weeds.

•Every country has the government agencies internal and external quarantine, whose mission - to prevent the importation from other countries weed seeds that are not in our country (foreign quarantine), and preventing the spread of harmful especially little common weeds from one area to the other (internal quarantine). Control measures: ban on planting seeds, weedy seeds quarantine weed ban transportation of grain without previous purification, cell destruction and quarantine weeds grain waste that contain their seeds.

•Cleaning seed from weed seeds.

•Cut down (an area of grass). roads, shelterbelts, limits of channels and ditches, vacant lots to flowering weeds with a machine.

•Proper preparation and storage of manure and compost

•Cleaning of irrigation water from weed seeds under irrigation with filters and other

Fighter measures

These include:

1 Agronomic (mechanical)

2 Biological

3 Chemical measures.

Farming practices are carried out in the system of cultivation.

Left fallow and cultivation fields stratified cleaning soil from weed seeds and vegetative reproductive organs.

«Method of exhaustion" - repeated trimming roots of weeds (2 -3 scaling, each time increasing the depth).

«Suffocation method" in which the soil is treated with disk tools (2 to 3 times) the depth of the main mass of roots. Following the shelling at the mass of shoots perform deep plowing plow with coulter. When plowing deeply, weed seedlings deprived of light and oxygen, suffocate and die.

Plowing "on fumes" - in the arid steppe regions polytseva plowing to a depth of placement of rhizomes that turn out to the surface where they then dry under the sun.

All systems and basic until seeding and after seeding tillage to destroy the weeds. If necessary, they can be combined with the use of herbicides

Biological weed control measures adopted seen primarily as the use of animals, insects, bacteria, fungi, viruses and other biological objects.

The chemical method of weed control is the use of chemicals - herbicides that kill weeds.

1 The nature of herbicides on plants are divided into two groups:

- Selective action (selective) that the application of certain rules and in accordance to kill only the weeds, or not destroed crops. They are divided into three types - against gramineous, against dicotyledonous drugs and broad-spectrum antibiotics, which destroy and grasses and dicotyledonous weeds;

- Continuous (total) - kill all plants. They are used to complete the destruction of vegetation

2 The nature of damage to plant herbicides are divided into contact and systemic. Contact herbicides cause damage to leaves and stems. System into the organs of plants break, normal biochemical and physiological processes.

3 By means of the use of herbicides is divided into land and groundwater. Terrestrial herbicides used for the cultivation of plants without soil and incorporation into the soil, that is on the surface. Soil herbicides earn the soil.