Hoagland solution
Encyclopedia
The Hoagland solution is a hydroponic nutrient
solution that was developed by Hoagland and Snyder in 1933 and is one of the most popular solution compositions for growing plants (in the scientific world at least). The Hoagland solution provides every nutrient necessary for plant growth and is appropriate for the growth of a large variety of plant species. The solution described by Hoagland in 1933 has been modified several times (mainly to add iron
chelates and the like), but the original concentrations for each element are shown below.
The Hoagland solution has a lot of N and K so it is very well suited for the development of large plants like Tomato
and Bell Pepper
. However, the solution is very good for the growth of plants with lower nutrient demands such as lettuce
and aquatic plants with the further dilution of the preparation to 1/4 or 1/5. Hoagland solution must be made from 7stock. 1: potassium nitrate(KNO3) 2: Magnesium sulphate heptahydrate, MgSO4-7H2O, and potassium dihydrogen phosphate (Potassium phosphate monobasic), KH2PO4 3: Iron EDTA or Iron Chelte, Fe-EDTA 4: Boric Acid, H3BO3 5: Copper Sulfate, CuSO4 6: Zinc sulfate heptahydrate, ZnSO4-7H2O 7: Manganese chloride, MnCl2-4H2O 6: Sodium molybdate, Na2MoO4-2H2O, 7: Calcium nitrate, Ca(NO3)2-4H2O. LAST SOLUTION must be added as final.
Component Stock Solution mL Stock Solution/1L
MACRONUTRIENTS
2M KNO3 202g/L 2.5
2M Ca(NO3)2-4H2O 236g/0.5L 2.5
Iron (Sprint 138 iron chelate) 15g/L 1.5
2M MgSO4-7H2O 493g/L 1
1M NH4NO3 80g/L 1
MICRONUTRIENTS
H3BO3 2.86g/L 1
MnCl2-4H2O 1.81g/L 1
ZnSO4-7H2O 0.22g/L 1
CuSO4 0.051g/L 1
H3MoO4-H2O or 0.09g/L 1
Na2MoO4-2H2O 0.12g/L 1
1M KH2PO4 (pH to 6.0) 136g/L 0.5
1) Make up stock solutions and store in separate bottles with appropriate label.
2) Add each component to 800mL deionized water then fill to 1L.
3) After the solution is mixed, it is ready to water plants.
Nutrient
A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism's metabolism which must be taken in from its environment. They are used to build and repair tissues, regulate body processes and are converted to and used as energy...
solution that was developed by Hoagland and Snyder in 1933 and is one of the most popular solution compositions for growing plants (in the scientific world at least). The Hoagland solution provides every nutrient necessary for plant growth and is appropriate for the growth of a large variety of plant species. The solution described by Hoagland in 1933 has been modified several times (mainly to add iron
Iron
Iron is a chemical element with the symbol Fe and atomic number 26. It is a metal in the first transition series. It is the most common element forming the planet Earth as a whole, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust...
chelates and the like), but the original concentrations for each element are shown below.
- N 210 ppm
- K 235 ppm
- Ca 200 ppm
- P 31 ppm
- S 64 ppm
- Mg 48 ppm
- B 0.5 ppm
- Fe 1 to 5 ppm
- Mn 0.5 ppm
- Zn 0.05 ppm
- Cu 0.02 ppm
- Mo 0.01 ppm
The Hoagland solution has a lot of N and K so it is very well suited for the development of large plants like Tomato
Tomato
The word "tomato" may refer to the plant or the edible, typically red, fruit which it bears. Originating in South America, the tomato was spread around the world following the Spanish colonization of the Americas, and its many varieties are now widely grown, often in greenhouses in cooler...
and Bell Pepper
Bell pepper
Bell pepper, also known as sweet pepper or a pepper and capsicum , is a cultivar group of the species Capsicum annuum . Cultivars of the plant produce fruits in different colors, including red, yellow, orange and green. Bell peppers are sometimes grouped with less pungent pepper varieties as...
. However, the solution is very good for the growth of plants with lower nutrient demands such as lettuce
Lettuce
Lettuce is a temperate annual or biennial plant of the daisy family Asteraceae. It is most often grown as a leaf vegetable. It is eaten either raw, notably in salads, sandwiches, hamburgers, tacos, and many other dishes, or cooked, as in Chinese cuisine in which the stem becomes just as important...
and aquatic plants with the further dilution of the preparation to 1/4 or 1/5. Hoagland solution must be made from 7stock. 1: potassium nitrate(KNO3) 2: Magnesium sulphate heptahydrate, MgSO4-7H2O, and potassium dihydrogen phosphate (Potassium phosphate monobasic), KH2PO4 3: Iron EDTA or Iron Chelte, Fe-EDTA 4: Boric Acid, H3BO3 5: Copper Sulfate, CuSO4 6: Zinc sulfate heptahydrate, ZnSO4-7H2O 7: Manganese chloride, MnCl2-4H2O 6: Sodium molybdate, Na2MoO4-2H2O, 7: Calcium nitrate, Ca(NO3)2-4H2O. LAST SOLUTION must be added as final.
Component Stock Solution mL Stock Solution/1L
MACRONUTRIENTS
2M KNO3 202g/L 2.5
2M Ca(NO3)2-4H2O 236g/0.5L 2.5
Iron (Sprint 138 iron chelate) 15g/L 1.5
2M MgSO4-7H2O 493g/L 1
1M NH4NO3 80g/L 1
MICRONUTRIENTS
H3BO3 2.86g/L 1
MnCl2-4H2O 1.81g/L 1
ZnSO4-7H2O 0.22g/L 1
CuSO4 0.051g/L 1
H3MoO4-H2O or 0.09g/L 1
Na2MoO4-2H2O 0.12g/L 1
1M KH2PO4 (pH to 6.0) 136g/L 0.5
1) Make up stock solutions and store in separate bottles with appropriate label.
2) Add each component to 800mL deionized water then fill to 1L.
3) After the solution is mixed, it is ready to water plants.