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The Kratky method is a passive hydroponic technique for growing plants suspended above a reservoir of nutrient-rich water. [1] Because it is a non-circulating technique, no additional inputs of water or nutrients are needed after the original application, and no electricity, pumps, or water and oxygen circulation systems are required. [2]
Root rot is a condition in which anoxic conditions in the soil or potting media around the roots of a plant cause them to rot. This occurs due to excessive standing water around the roots. [ 1 ] It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with ...
Pythium-induced root rot is a common crop disease. When the organism kills newly emerged or emerging seedlings, it is known as damping off, and is a very common problem in fields and greenhouses. [2] Thus there is tremendous interest in genetic host resistance, but no crop has ever developed adequate resistance to Pythium. [3]
Root rot is the most common cause of death for houseplants but keeping houseplants too dry ("under-watering") can also be detrimental. Plants require nitrate , phosphate , and potassium to survive, as well as micronutrients including boron , zinc , manganese , iron , copper , molybdenum , and chlorine .
A major limitation of hydroponics is the fact that 1 kilogram (2.2 lb) of water can only hold 8 milligrams (0.12 gr) of air, no matter whether aerators are utilized or not. Another distinct advantage of aeroponics over hydroponics is that any species of plants can be grown in a true aeroponic system because the microenvironment of an aeroponic ...
Pyrenochaeta stalk rot and root rot Phoma terrestris = Pyrenochaeta terrestris: Pythium root rot Pythium spp. Pythium arrhenomanes Pythium graminicola. Pythium stalk rot Pythium aphanidermatum = Pythium butleri: Red kernel disease. Ear mold, leaf and seed rot Epicoccum nigrum: Rhizoctonia ear rot. Sclerotial rot Waitea zeae: Rhizoctonia root ...
Root knot nematodes have quite a large host range, they parasitize plant root systems and thus directly affect the uptake of water and nutrients needed for normal plant growth and reproduction, [21] whereas cyst nematodes tend to be able to infect only a few species. Nematodes are able to cause radical changes in root cells in order to ...
Heterobasidion annosum moves short distances from the roots of an infected stump through root grafts with other trees. It can also spread through insects that feed on roots. [1] [6] Since this fungus can not move very far through soil, it relies on tree roots to help it infect neighbouring trees. In these roots, it can grow 0.1–2.0 m per year.
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