Assessing root system in hydrophonic culture in glass plate test - using two pre-germinated seeds exposed to differing concns. of inoculant fixed on gel strip

摘要

In assessment and optimisation of root systems in hydroponic culture, by means of a glass plate test, a strip of gel with a biological and/or chemical inoculate is arranged in the space between two glass plates fixed together with spacers, two pre-germinated cultivated plant seeds are arranged between the gel strip and the spacer, incubation is begun, and the affinity index is determined. The seeds, which are incubated with the same inoculate, but in different concns., are arranged in the block in a glass vessel which has been filled with nutrient soln. to the upper surface of the glass plates. Incubation is at 6,000 lux and 20-30 deg.C for 5-8 days. The inoculant may be microorganisms, plant protectants, aminoacids or soil. Root growth is optically visible and can be assessed at any time, and analysis of the root system is without interference. USE/ADVANTAGE - The effect of additives and of the most varied influences on the root system of plants in natural habitats can be determined. The process is accurate and certain, and gives visible results