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Phosphorus Deficiency



P_phospdef

Phosphorus Deficiency

Usually appear in

Spring to Autumn.


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Caused By:-     Various causes

Description

Phosphorus(P) is one of the three main chemicals along with Nitrogen(N) and Potassium(K) in fertilisers(NPK) that is needed in any plant with a few exceptions like Proteas which do not tolerate high levels in the soil. Phosphorus deficiency in plants causes poor growth and spindly stem growth. The leaves may turn a dull green with blue/purple or yellow tints especially around the veins on the underside of the leaf. Sometimes leaf margins may become slightly scorched. As Phosphorus promotes blooming and fruit production the blooms may be reduced and the amount of setting of fruits will be less.
It is most common in areas of high rainfall, especially on acid, clay or poor chalk soils. Cold weather can cause a temporary deficiency. Phosphorus(P) is one of the three main chemicals along with Nitrogen(N) and Potassium(K) in fertilisers(NPK) that is needed in any plant with a few exceptions like Proteas which do not tolerate high levels in the soil. Phosphorus deficiency in plants causes poor growth and spindly stem growth. The leaves may turn a dull green with blue/purple or yellow tints especially around the veins on the underside of the leaf. Sometimes leaf margins may become slightly scorched. As Phosphorus promotes blooming and fruit production the blooms may be reduced and the amount of setting of fruits will be less.
It is most common in areas of high rainfall, especially on acid, clay or poor chalk soils. Cold weather can cause a temporary deficiency. Picture by R.L. Croissant, Bugwood.org.
See also BORON DEFICIENCY, CALCIUM DEFICIENCY, IRON DEFICIENCY, MAGNESIUM DEFICIENCY, MANGANESE DEFICIENCY, MOLYBDENUM DEFICIENCY, NITROGEN DEFICIENCY, PEAR BORON DEFICIENCY, POTASSIUM DEFICIENCY.


Control

It can be controlled by applying bone meal or superphosphate to remedy any deficiencies. Organic sources of phosphorus such as rock phosphate or fish fertiliser can also be used. Foliar feeding will also help in the short term.



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