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Pioneering the Future

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Fertilization of courgette in greenhouses

Haifa's fertilizers supply the courgette with all the needed nutrients, by base-dressing and fertigation fertilization methods

Growing method: Greenhouse.
Plant density: 10,000 plants / Ha.
Expected yield: 80-100 T/Ha.

 

 

 

Total uptake

N

P2O5

K2O

200-225

100-125

300-350

 

 

A. Base-dressing

Nutrients required (Kg/Ha)

Recommended fertilizers (Kg/Ha)

N

P2O5

K2O

MgO

A.S.

SSP

K2SO4

Mag. Sulphate

30

50

100

37

120

250 

200

240

 

B. Fertigation

Growth stage

Nutrients required (Kg/Ha)

Recommended fertilizer (Kg/Ha)

N

P2O5

K2O

CaO

A.N.

MAP

Multi-K

Cal. Nit.

Transplanting – 21 days

0

0

0

0

-

-

-

-

22 – 52 days

65

55

0

32

120

90

-

120

53 – 120 days

177

130

236

32

200

214

513

120

 

Nutrition database for courgette (squash)

 

Concentration

 

Rockwool

 

Plant – dry matter

Parameter

Nutrient Solution

Root Environ.

Nutrient Solution

Root Environ.

Guiding Range

Deficient

Excessive
EC (mS/cm)

2.2

3.0

 

 

     
 

(mg/l)

(mg/l)

(%)

NH4

22.5

< 9.0

 

 

     
N-NH4

17.3

< 6.9

 

 

     
K in sap        

 

   
K

283.5

312.8

 

 

3.72

   
Ca

145.4

260.7

 

 

1.40

   
Mg

48.6

85.1

 

 

0.49

 

 
N, total        

4.90

   
NO3

992.0

1116.0

 

 

1.86

   
N-NO3

223.9

251.9

 

 

     
S, total        

0.32

   
SO4

120.1

336.4

 

 

0.29

   
P        

0.93

   
H2PO4

121.3

87.3

 

 

     
Cl              
Na              
         

mg/Kg (ppm)

Fe

0.559

0.838

 

 

111.7

   
Mn

0.549

0.385

 

 

82.4

   
Zn

0.327

0.458

 

 

91.5

 

 

B

0.324

0.648

 

 

37.8

   
Cu

0.048

0.064

 

 

12.7

   
Mo

0.048

-

 

 

     

 

Important note: The a/m database was prepared to fit Dutch conditions (low transpiration and low EC of the water). Some modifications may be required to correspond to your local conditions.

sources:

  • N. Straver. Nutrient solutions for vegetables and flowers grown in water or substrates. 10th Ed. 1994.
    • C. de Kreij, Sonneveld C., Warmenhoven M.G. and Straver N.A. Guide values for nutrient element contents of vegetables and flowers under glass. 3rd Ed. 1992.