Protection of plants. Competing interactions with other members of vegetative community

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The Majority of plants grows within the vegetative communities consisting of many individuals of the same kind or different kinds. If the major vital resources which such community has, i.e. The space, nutrients, water and light, are limited, each plant competes to the neighbours for these resources. those plants which from the very beginning develop quickly dominate usually, grasp the most part of nutrients, waters, etc. Also overtake in growth of the neighbours. In agriculture we almost always deal with a monoculture - one any kind is required to us only, and we all rest carry to ' to weeds '. (As a word ' a weed ' understand usually such plant which in the given place and is not necessary at present for us.) Unfortunately, dwellings well adapted for conditions weeds quite often grow faster, than the cultivated cultural plants deduced counting on high economic efficiency, and at all on the basis of competitiveness. therefore cultural plants often require the help of the person that they were overcome by weeds competing to them. During former times weeds left manually or by means of a mattock; on small sites this way is applied and now. However in agricultural practice of the western countries, i.e. there where the extensive areas are occupied by any one culture and where business often rests against shortage and dearness of hands, instead of manual weeding resort usually to herbicides. After removal of weeds there is still a competition between the cultural plants belonging to the same kind, but this competition has for us no special value as us the crop not from one plant, and from area unit interests. If plants to yield a harvest, should reach any minimum sizes (an example of it pineapple or a sugar beet can serve) such plants should be transplanted or thinned out that, however, too often it is possible to do in the mechanised way.

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