Information for farmers

Mineral nutrition for oilseed rape:

  • Winter and summer oilseed rape is characterized by approximately the same amount of nutrients , which are removed with 1 tonne of grain and the corresponding amount of straw: 55?58 kg of nitrogen, 29?30 kg of phosphorus and 26?30 kg of potassium.
  • Winter oilseed rape demands more nutrients then the spring type.
  • Oilseed rape gives positive response to sulphur. By the crop yield of 25 c/ha the demand for sulphur is 25-30 kg/ha.
  • The highest crop yield and quality can be achieved by application of 70?80 kg/ha SO3 together with application of nitrogen in spring.
  • Phosphorus and potassium fertilizers are applied in full volume during the presowing cultivation.
  • Complex fertilizers with 21?10?10?2 and 22?7?12?2 ratios structure containing nitrogen, phosphorus, potassium and sulphur in one grain that secure even distribution of nutrients on application and generally help on even simultaneous emergence of seedlings as well as nitrogen sulphate as the main sulphur containing fertilizer will do best for spring oilseed rape.

Nitrogen: split application of mineral fertilizers is reasonable.

  • For winter oilseed rape 20?30 % of the full volume of nitrogen is applied in fall before sowing.
  • It is recommended to apply 40?50 % in spring and 25?35 % at stem extension (intensive elongation) stage.
  • Nitrogen sulphate and nitrogen-sulphur bulk blends are considered to be the best nitrogen fertilizers for oilseed rape.

Phosphorus:

  • 60kg/ha Р2О5 for pH 5,5 to 7,5 soils 
  • 70?90kg/ha Р2О5 for alkaline soils
  • 140?160kg/ha Р2О5 for acid рН<5,5 soils 

Potassium: 

  • High-potassium soils – 60?80 kg/ha К2О
  • Medium-potassium soils – 120?150 kg/ha К2О
  • Low-potassium soils – 200?250 kg/ha К2О

Sulphur: sulphur is an essential element for oilseed rape increasing both the crop yield and the oil content in grain.

Timing and standards for application of mineral fertilizers produced by URALCHEM in order to achieve the planned yield level of spring oilseed rape, kg/ha:

Type of fertilizer

Fertilizer grade,
kg/ha

Comments

Planned yield crop, (seeds), c/ha

15,0-20,0

20,1-25,0

25,1-30,0

30,1-35,0

35,1-40,0

Nitrogen

Calcium-nitrogen-sulphate (27N +4Ca +4S)

Additional nutrition on stem extension stage

55-75

75-100

100-123

123-145

145-165

Nitrogen sulphate (32N+5S)

45-65

65-85

85-105

105-120

120-140

Nitrogen*

Nitrogen sulphate (26N+14S)

Presowing application*

134-190

190-240

240-295

295-350

350-405

Complex*

NPKS 21-10-10-2

165-215

215-280

280-335

335-415

415-455

NPKS 22-7-12-2

160-205

205-265

265-320

320-415

415-455

Timing and standards for application of mineral fertilizers produced by URALCHEM in order to achieve the planned yield level of winter oilseed rape, kg/ha:

Type of fertilizer

Fertilizer grade,
kg/ha

Comments

Planned yield crop, (seeds), c/ha

15,0-20,0

20,1-25,0

25,1-30,0

30,1-35,0

35,1-40,0

Nitrogen

Ammonium nitrate

Early spring additional nutrition

85-115

115-142

142-171

171-200

200-225

110-145

145-185

185-225

225-259

259-295

Potassiumnitrogensulphate (27N +4Ca +4S)

75-100

100-125

125-150

150-175

175-200

Nitrogensulphate (26N +14S)

Potassiumnitrogensulphate (27N +4Ca +4S)

Additional nutrition on stem extension stage

55-74

74-95

95-110

110-129

129-148

46-62

62-78

78-95

95-110

110-125

Nitrogensulphate (32N +5S) 

Complex*

NPKS 21-10-10-2

Presowing application*

70-100

100-120

120-140

140-165

165-190

65-95

95-115

115-135

135-160

160-185

NPKS 22-7-12-2