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The flower hoe has a very small blade, rendering it useful for light weeding and aerating around growing plants, so as not to disturb their shallow roots while removing weeds beyond the reach of the gardener's arm. The hoedad, hoedag or hodag is a hoe-like tool used to plant trees. [13]
In any case, desirable qualities have been identified in each particular tree, and competing trees are removed to promote the desired trees. To help distinguish between cleaning and weeding, consider these two images from the northeastern United States. Both pictures focus on an eastern white pine of good future sawlog quality.
Some of these methods cause direct damage to the weeds through complete removal or causing a lethal injury. Other techniques may alter the growing environment by eliminating light, increasing the temperature of the soil, or depriving the plant of carbon dioxide or oxygen. [2] Mechanical control techniques can be either selective or non-selective.
Weed control is a type of pest control, which attempts to stop or reduce growth of weeds, especially noxious weeds, with the aim of reducing their competition with desired flora and fauna including domesticated plants and livestock, and in natural settings preventing non native species competing with native species.
The garden can also be watered to speed up germination of the weeds. After the weeds have sprouted and reached the first-leaf stage, they are eliminated using mechanical or thermal methods as above. Mechanical elimination of small weed seedlings in the garden is done by stirring the surface of the soil to uproot and bury the seedlings.
When the trees have grown, usually in about two years, the canopies close over the alley and cut off the light and so smother the weeds. The trees are then carefully pruned. The larger branches are used for firewood. The smaller branches and leaves are left on the ground in the alleys. These rot down into a good mulch . If any weeds haven't ...
In shifting agriculture, after two or three years of producing vegetable and grain crops on cleared land, the migrants abandon it for another plot. Land is often cleared by slash-and-burn methods—trees, bushes and forests are cleared by slashing, and the remaining vegetation is burnt. The ashes add potash to the soil.
The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year. Then, the biomass is burned, resulting in a nutrient-rich layer of ash which makes the soil fertile, as well as temporarily eliminating weed and pest species.