How the aeration status of the growing medium affects crop growth

Whengrowingmedium is well aerated, root respiration is vigorous, orchid mycorrhizal fungi grow rapidly, and water absorption capacity improves.growingmedium is poorly aerated, it lacks oxygen and carbon dioxide accumulates excessively; in a short time this can weaken cell respiration and affect active water uptake. Over a longer time, anaerobic respiration develops, producing accumulated ethanol, and the root system is poisoned and injured, taking up even less water. We often use relatively hardgrowingmedia, or leave aeration holes in the walls of flower pots, precisely to reduce the retention of gravitational water, increase its air spaces, and improve aeration, so as to maintain a good aeration status and ensure the normal activity of the root system. (Liu Zhongjian, Xu Gongming)