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A high plant population does not necessarily equal a high yield. The recommended seeding rate is 125,000 to 140,000 seeds per acre. [2] The goal is to achieve a final stand of 100,000 plants per acre. [2] Planting the extra seed gives the producer added insurance that each acre will attain a final stand of 100,000 plants.
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.
soybean: 375 446 335 48 2 11 coffee: 386 459 345 49 10 11 flax (linseed) 402 478 359 51 3 10 hazelnuts: 405 482 362 51 4 8 euphorbia: 440 524 393 56 4 10 pumpkin seed: 449 534 401 57 4 9 coriander: 450 536 402 57 3 11 mustard seed: 481 572 430 61 7 11 camelina: 490 583 438 62 7 9 sesame: 585 696 522 74 7 10 safflower: 655 779 585 83 3 9 rice ...
These days, "seed oil" is more of a pejorative term than a technical definition, referring to oils high in omega-6 fatty acid, including: Canola. Corn. Soybean. Cottonseed. Grapeseed. Sunflower ...
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.
Soybean seed contains 18–19% oil. [158] To extract soybean oil from seed, the soybeans are cracked, adjusted for moisture content, rolled into flakes, and solvent-extracted with commercial hexane. [159] The oil is then refined, blended for different applications, and sometimes hydrogenated.
For example, the U.A.D.A. recommends 150 lb. N/acre ("this recommendation is for N applied in a 2 or 3-way split application where 90 lb N/acre is applied preflood and followed by 60 lb N/acre at midseason") for Wells rice grown in rotation with soybeans on silt/sandy-loam soils.
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.
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