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From Wikipedia, the free encyclopedia

Chickpea with root rot
Chickpea plant (Cicer arietinum) with root rot. Note the symptomatic discolouration in some of its leaves.

Root rot is a condition found in both indoor and outdoor plants, although more common in indoor plants with poor drainage. As the name states, the roots of the plant rot. Usually, this is a result of overwatering. In houseplants, it is a very common problem, and is slightly less common in outdoor plants. In both indoor and outdoor plants, it is usually lethal and there is no effective treatment.

The excess water makes it very difficult for the roots to get the air that they need, causing them to decay[citation needed]. To avoid root rot, it is best to only water plants when the soil becomes dry, and to put the plant in a well-drained pot. Using a heavy soil, such as one dug up from outdoors can also cause root rot.

Many cases of root rot are caused by members of the water mould genus Phytophthora; perhaps the most aggressive is P. cinnamomi. Spores from root rot causing agents do contaminate other plants, but the rot cannot take hold unless there is adequate moisture. Spores are not only airborne, but are also carried by insects and other arthropods in the soil.

A plant with root rot will not normally survive, but can often be propagated so it will not be lost completely. Plants with root rot should be removed and destroyed.

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Transcription

Contents

Hydroponics

Root rot can occur in hydroponic applications, if the water is not properly aerated[citation needed]. This is usually accomplished by use of an air pump, air stones, air diffusers and by adjustment of the frequency and length of watering cycles where applicable. Hydroponic air pumps function in much the same way as aquarium pumps, which are used for the same purpose. Root rot and other problems associated with poor water aeration were principal reasons for the development of aeroponics.

Particular diseases

See also

References

  • Shurtleff, Malcolm C. (1962) How to Control Plant Diseases in Home and Garden Iowa State University Press, Ames, Iowa, p. 73;
  • Yepsen, Roger B. Jr. (1976) Organic plant protection: a comprehensive reference on controlling insects and diseases in the garden, orchard and yard without using chemicals Rodale Press, Emmaus, PA, pp. 194, 208, 212-213, 226, 247, 260, 295, 321, 333, 337, 469, 488, 577, and 629, ISBN 0-87857-110-8 ;
  • Ellis, Barbara W. and Bradley, Fern Marshall (eds.) (1992) The Organic gardener's handbook of natural insect and disease control: a complete problem-solving guide to keeping your garden & yard healthy without chemicals Rodale Press, Emmaus, PA, p. 401, ISBN 0-87596-124-X ;
This page was last edited on 27 June 2017, at 23:08.
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