Covering the basics of how we grow hydroponic rototillers. Display the culture medium, the sprinkler system / supply nutrients, how to plant and harvest.
Richmond, Nelson NZ
Nutrients should contain the following minerals.
Nitrogen, potassium, phosphorus, calcium, magnesium, sulfur, sodium, chloride, Silicon, iron, manganese, boron, copper, zinc, molybdenum.
Nitrogen 2.6 3.5% phosphorus 0.25 to 0.35%
Potassium 1.0 to 2.0% Calcium 0.7 to 1.5%
Magnesium 0.25 to 0.4% sulfur 0.15 to 0.35%
Iron at 100 to 200 ppm of manganese from 200 to 500 ppm
Boron from 30 to 100 ppm copper from May to December ppm
Zinc 30-80 ppm
Plant growth stimulators are often added nutrients to produce high-quality growth during periods of adverse conditions, for example, in winter in low light.
Growth promoters, Agronomix to 20 g per 20 kg of dry powder mixture, and SGP 500 ml per 20 kg of dry powder can be added to the drum ‘B’.
nutrient formulation is mixed according to the water supply, such as mineral water analysis is essential for the optimal formulation.
Correction to the pH drop is usually phosphoric acid, but there may be situations where mixtures phosphoric / nitric acid are used, or nitric acid even directly at times, especially if the water supply has high pH, greater than 7.8 for example.
PH correction up is always performed with potassium hydroxide. Caustic potash common name.
Note … all pH correctors are added in a very small form; Never use acid or alkaline full force to adjust the nutrient solution. Dilutions from 500 to 1 with water are normal.
Reference – http://pgohort.co.nz/resources/1/crop%20data/Strawberry%20data.pdf