Search results
Results from the WOW.Com Content Network
Among the major field crops, oats, wheat, and rye are sown, grasses and legumes are seeded and maize and soybeans are planted. In planting, wider rows (generally 75 cm (30 in) or more) are used, and the intent is to have precise; even spacing between individual seeds in the row, various mechanisms have been devised to count out individual seeds at exact intervals.
With occultation, black plastic or silage tarps are laid over the soil, creating a moist and warm environment in which weed seeds germinate, and then die due to lack of light. In either case, the seedbed is prepared and moistened prior to covering with the plastic or tarp. [6] [citation needed]
These can be quite elaborate in the case of certain maize varieties, but tend to use a trapezoidal or leaf area index (LAI) curve for common crop or vegetation canopies. Stress coefficients, K s, account for diminished ET due to specific stress factors. These are often assumed to combine by multiplication.
A seedbed of rice plants. A seedbed or seedling bed is the local soil environment in which seeds are planted. Often, it comprises not only the soil but also a specially prepared cold frame, hotbed or raised bed used to grow the seedlings in a controlled environment into larger young plants before transplanting them into a garden or field.
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.
1 A leaf is unfolded when its ligule is visible or the tip of the next leaf is visible; 2 Tillering or stem elongation may occur earlier than stage 13; in this case continue ...
Need help? Call us! 800-290-4726 Login / Join. Mail
The seedbed should be finely crumbled as for sugar beet and rapeseed. [20] In Europe, proso millet is sowed between mid-April and the end of May. About 500 grams per acre (44 oz/ha) of seeds are required, which is roughly 500 per square metre (2,000,000/acre). In organic farming, this amount should be increased if a harrow weeder is used. For ...