Hoagland solution

The Hoagland solution is a hydroponic nutrient solution that was developed by Hoagland and Snyder in 1933, refined by Hoagland and Arnon in 1938 and revised by Arnon in 1950. It is one of the most popular solution compositions for growing plants (in the scientific world at least) with more than 10,000 citations listed by Google Scholar. The Hoagland solution provides every nutrient necessary for plant growth and is appropriate for the growth of a large variety of plant species. The Hoagland solution is a hydroponic nutrient solution that was developed by Hoagland and Snyder in 1933, refined by Hoagland and Arnon in 1938 and revised by Arnon in 1950. It is one of the most popular solution compositions for growing plants (in the scientific world at least) with more than 10,000 citations listed by Google Scholar. 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 ferric EDTAs and alter the number and concentrations of micronutrients. In the revision of 1950, only one concentration (Mo 0.01 ppm) was changed compared to 1938, while the concentration and composition of macronutrients remained the same since 1933. Accordingly, the original and the modified concentrations for each element are shown below, the calculation of these values being derived from Table (1). 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. The solution is very good for the growth of plants with lower nutrient demands as well, such as lettuce and aquatic plants, with the further dilution of the preparation to 1/4 or 1/5 of the modified solution. Salts and acids to make up the Hoagland solution formulations: