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A seed rate of about 100 kg of seed per hectare (2 bushels per acre) is typical, though rates vary considerably depending on crop species, soil conditions, and farmer's preference. Excessive rates can cause the crop to lodge, while too thin a rate will result in poor utilisation of the land, competition with weeds and a reduction in the yield.
The seed ratio is another way of calculating yields. Cereal yield in tons per hectare and kilograms of nitrogenous fertilizer applied per hectare of cropland. Innovations, such as the use of fertilizer , the creation of better farming tools, and new methods of farming and improved crop varieties have improved yields.
Plant density is defined as the number of plants present per unit area of ground. In nature, plant densities can be especially high when seeds present in a seed bank germinate after winter, or in a forest understory after a tree fall opens a gap in the canopy.
Researchers predict an average yield of 14.6 dry tonnes per hectare per year for miscanthus on marginal land in China, 12.6% below expected average yield on arable land. They calculate that miscanthus on marginal land in China can produce 31.7 EJ (exajoule) of energy annually, [18] an amount equivalent to 39% of the country's 2019 coal consumption.
The combine grain yield monitor is a device coupled with other sensors to calculate and record the crop yield or grain yield as a modern-day combine harvester operates. Yield monitors are a part of the precision agriculture products available to producers today that provide producers with the tools to reduce costs, increase yields, and increase efficiency.
Broadcast seeding may be suited for seeding smaller plots that are less than 1 acre (0.4047 hectares) in area. It has the potential for loss of seeds and the yield can be low, so it is typically recommended to double the seeding rate when broadcasting to ensure a viable stand.
In most climates, alfalfa is cut three to four times a year, but it can be harvested up to 12 times per year in Arizona and southern California. [44] [45] Total yields are typically around 8 tonnes per hectare (3 + 1 ⁄ 2 short tons per acre) in temperate environments, but yields have been recorded up to 20 tonnes per hectare (9 short tons per ...
Clearcut openings of 1.2 to 2.0 hectares (3.0 to 4.9 acres) adjacent to an adequate seed source, and not more than 6 tree-heights wide, could be expected to secure acceptable regeneration (4,900, 5-year-old trees per hectare), whereas on undisturbed-unshaded north aspects, and on all seedbed treatments tested on south aspects, seed to seedling ...