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In addition, there are various types of power harrow, in which the cultivators are power-driven from the tractor rather than depending on its forward motion. Tine harrows are used to refine seed-bed conditions before planting, remove small weeds in growing crops, and loosen the inter-row soils to allow water to soak into the subsoil. The fourth ...
Harrows, whether spring tooth, spike tooth or disc harrows can have a drag connection or have a 3 point mounting. A drag harrow is pulled and cannot be backed up. Three point implements can be raised and lowered hydraulicly and maneuvered more easily. A spring-tooth harrow is a type of harrow, and specifically a type of tine harrow. It uses ...
The seedbed preparation can be done with harrows (of which there are many types and subtypes), dibbles, hoes, shovels, rotary tillers, subsoilers, ridge- or bed-forming tillers, rollers, or cultivators.
Before the operation of a conventional seed drill, hard ground has to be plowed and harrowed to soften it enough to be able to get the seeds to the right depth and make a good "seedbed", providing the right mix of moisture, stability, space and air for seed germination and root development.
A disc harrow is the preferred method of incorporating both agricultural lime (either dolomitic or calcitic lime) and agricultural gypsum, and disc harrowing achieves a 50/50 mix with the soil when set correctly, thereby reducing acid saturation in the top soil and so promoting strong, healthy root development.
The no-till stale seed bed method involves covering the soil with plastic or silage tarps. There are two basic strategies: soil solarization and soil occultation. With soil solarization, the seed bed is covered with a clear plastic sheet which heats the soil to a temperature that kills pests, pathogens, and weeds.
A 4-foot drag harrow A larger, 12 foot drag harrow simply uses three four foot sections that are connected. A drag harrow, a type of spring-tooth harrow, is a largely outdated type of soil cultivation implement that is used to smooth the ground as well as loosen it after it has been plowed and packed.
Flatness is important at planting because it is the only practical way to control average seed planting depth without laborious hand planting of each seed; it is not practical to follow an instruction of (for example) 1-cm planting depth if the contour of the seedbed varies by 2 cm or more between adjacent spots.