Hoaglands Medium

From Knotts Handbook for Vegetable Growers, 1980

 

Compound

Stock (g/liter)

1X Hoaglands
(ml/liter)

X Hoaglands
(ml/liter)

100 X of strength (ml/liter)

Ca(NO3)2 4H2O

236.2 g

5 ml

1.25 ml

125 ml

KNO3

101.1 g

5 ml

1.25 ml

125 ml

KH2PO4

136.1 g

1 ml

0.25 ml

25 ml

MgSO4 7H2O

246.5 g

2 ml

0.5 ml

50 ml

Micronutrients

1000 X (see below)

1 ml

0.25 ml

25 ml

Fe-EDTA

1000 X (see below)

1 ml

0.25 ml

25 ml

 

Micronutrients:

Compound

1000X stock (g/liter)

H3BO3

2.86

MnCl2 4H2O

1.81

ZnSO4 7H2O

0.22

CuSO4 5H2O

0.08

NaMoO4 H2O

0.02

 

Fe-EDTA:

Compound

1000 X stock (g/liter)

EDTA

10.4

FeSO4 7H2O

7.8

KOH

56.1


Make up 1 L of KOH, adjust pH to ~5.5 using H2SO4. Then add EDTA 2Na and FeSO4 7H2O


 

100 X Growth Chamber Mix for Triphysaria

Add 10 ml solution A and 10 ml solution B to 1 liter water for strength Hoaglands

Solution A

125 ml of 1M Ca(NO3)2 4 H2O

25 ml Iron EDTA

Make up to 1 liter

Solution B

125 ml of 1M KNO3

25 ml of 1M KH2PO4

50 ml of 1M MgSO4

25 ml of 1M 1000X Hoagland Micronutrient Solution

Make up to 1 liter