- Phosphorus deficiency
Phosphorus(P) deficiency is a plant disorder that is most common in areas of high rainfall, especially on acid, clayor poor chalk soils. Cold weather can cause a temporary deficiency.
All plants may be affected, although this is an uncommon disorder. Particularly susceptible are
carrots, lettuce, spinach, apples, currants and gooseberries. Symptoms include poor growth, and leaves that turn blue/green but not yellow—oldest leaves are affected first. Fruits are small and acid tasting. Phosphorus deficiency may be confused with nitrogen deficiency.
It can be controlled by applying organic sources of phosphorus such as
Plants that are naturally adapted to low levels of available soil phosphorus, however, are more likely to suffer from phosphate poisoning: the key is to provide the right level for any particular plant type, neither too high nor too low.
Wikimedia Foundation. 2010.
Look at other dictionaries:
phosphorus deficiency — ▪ medical disorder condition in which phosphorus is insufficient or is not utilized properly. Phosphorus is a mineral that is vitally important to the normal metabolism of numerous compounds and (in solution) an acid that, with sulfur, must … Universalium
Phosphorus — This article is about the chemical element. For other uses, see Phosphorus (disambiguation). silicon ← phosphorus → sulfur … Wikipedia
Micronutrient deficiency — A micronutrient deficiency (or trace mineral deficiency) is a physiological plant disorder which occurs when a micronutrient is deficient in the soil in which a plant grows. Micronutrients are distinguished from macronutrients (such as nitrogen,… … Wikipedia
Nitrogen deficiency — A young cabbage plant exhibiting nitrogen deficiency. This is about nitrogen compounds in plant nutrition. For shortage of nitrogen compounds in human and animal nutrition, see protein deficiency. All plants require sufficient supplies of… … Wikipedia
Manganese deficiency (plant) — Manganese deficiency on a rose Manganese (Mn) deficiency is a plant disorder that is often confused with, and occurs with, iron deficiency. Most common in poorly drained soils, also where organic matter levels are high. Manganese may be… … Wikipedia
calcium deficiency — Inadequate supply or metabolism of calcium, the main structural element of bones and teeth. Its metabolism is regulated by vitamin D, phosphorus, and hormones (see parathyroid gland). Calcium in the blood has roles in muscle contraction, nerve… … Universalium
Adenosine Monophosphate Deaminase Deficiency type 1 — Classification and external resources Adenosine monophosphate OMIM 102770 … Wikipedia
Iron deficiency (plant disorder) — Iron (Fe) deficiency is a plant disorder also known as ‘lime induced chlorosis’. A deficiency in the soil is rare. Iron can be unavailable if pH is too high or if the soil is waterlogged, or has been overfertilised with phosphorus. Can be… … Wikipedia
Fertilizer — Tennessee Valley Authority: Results of Fertilizer demonstration 1942 … Wikipedia
List of organic gardening and farming topics — An organic garden on a school campus This is a list of organic farming and gardening topics. Contents 1 Techniques … Wikipedia