Seeding Rate

Seeding Rate

 

the number of seeds planted per hectare (ha) to ensure normal density of sprouts and a maximum yield. The seeding rate is expressed by the number of germinating seeds (millions) and the weight of the seeds (kg). It is determined by considering plant requirements for feeding space, the purpose of cultivation (grain, silage), soil fertility, climatic conditions, and other factors. The seeding rate may differ for the same crop. The seeding rate for crops raised for silage is higher than that for crops raised for grain. In northern regions the rate is higher than in the south. For example, a spring-wheat seeding rate of 6–7 million per ha is recommended in the northern regions of the USSR, and a rate of 3.5–5 million per ha is recommended in southern and eastern regions.

The recommended seeding rates are calculated for 100 percent seed purity, so in each particular case an appropriate correction must be made. For example, if the recommended rate is 4 million seeds per ha and the seeds at a particular farm have a purity of 94 percent, the seeding rate for them will be

To calculate the seeding rate by weight in kg, the numerical seeding rate is multiplied by the weight of 1,000 seeds in g. Thus, if 1,000 seeds weigh 40 g, the seeding rate in the specific case mentioned above will be 4.4 million X 40, which equals 176 kg.

M. G. PRUTSKOVA

References in periodicals archive ?
An industry exclusive calibration tray can be used to adjust for the desired seeding rate and can save you up to 30 minutes when compared to the competition.
DA provided planting materials with seeding rate of 50 kilograms per hectare using the plant now and pay later scheme.
Following the directions and calibrating the seeding rate is important as we look at trying to be efficient with our plots.
"Among our problems in the industry include high seeding rate, insufficiency of laborers, and low yield," Antolin said.
Other benefits associated with seed coating material include high yield per hectare, low seeding rate, multicomponent product and others, which are driving the demand for seed coating material across the globe.
If the test date was more than nine months ago, plan to bump up your seeding rate to make up for a declining germination rate--if you're comfortable guessing.
Nevertheless, most studies that confirmed soybean plasticity against the alterations in seeding rate adopted the same levels of phosphate and potassium fertilization used for the recommended densities (Bruns, 2011; Gaspar et al., 2015).
Seeding rate for each mixture was calculated according to the seed rate proportion of both grasses and legumes.Diammonium phosphate (DAP) fertiliser was applied at planting at rate of 100 kg ha-1 in all treatments, and 50 kg ha-1 nitrogen fertiliser in the form of urea was applied after establishment for pasture plots receiving only grass species according to pervious recommendations (IAR, 1988).
This function was used to predict an ideal 100 seed weight based on a yield potential of 1735 kg/ha and a seeding rate of 80 seeds/[m.sup.2] (Figure 2).
Therefore, present field trial was conducted to find a suitable seeding rate and soaking duration for relay sown wheat seed in standing cotton crop.
Response of six- row- barley to seeding rate and weed control methods under moisture stress.