Modern dwarf, EC-68415C, MSFH-1, MSFH-8, Surya, Ramson, NSFH, SH-3322, PSH-50.
A seed rate of 6-8 kg/ha for rainfed and 5-6kg/ha for irrigated sunflower is generally recommended. The spacing varies from 20 to 30 cm (plant to plant) and 60 to 80 cm ( row to row direction) depending upon soil, variety and method of irrigation.
|Stage of Growth|
|Parameter||Initial Stage||Crop Development||Mid-Season||Late Season||Growth Period|
As the crop is a closely spaced crop, sprinkler irrigation is ideal for irrigation. The recommended models of sprinklers are M110ST & RAYNTM normally spaced at 12m x 12m or M150ST sprinklers spaced at 18m x 18m.
The sprinkler application rates should not exceed the safe intake rate of the soil to avoid run-off and wastage of water. Refer to the table below for basic intake rates of soils:
|S No.||Soil Type||Good Soils with High Organic Content||Poor Soils with Low Organic Content|
|1.||Coarse sand||20 to 25 mm/hr||12.5 mm/hr|
|2.||Fine sand||12.5 to 20 mm/hr||9.00 mm/hr|
|3.||Fine sandy loams||12.50 mm/hr||7.50 mm/hr|
|4.||Silt loams||10.00 mm/hr||6.85 mm/hr|
|5.||Clay loams||7.50 mm/hr||6.35 mm/hr|
|Irrigation Method||N-P-K dose kg/ha|
Kc = Crop co-efficient.
ETo = Reference evapo-transpiration (mm)
ETm = Maximum evapo-transpiration = Kc x ETo (mm)
ETa = Evapo-transpiration actual (mm)
Ya = Actual yield
Ym = Maximum yield
Note: The advice and descriptions given herein are for general information only. Premier Irrigation cannot be held responsible for its use or application