Calcium deficiency (plant disorder)

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Calcium deficiency (Ca) is a plant disturbance that can be caused by an inadequate level of calcium availability in growing media, but is more often a low transpiration product of the whole plant or more commonly of affected tissue. Plants are vulnerable to such local calcium deficiencies in low or non-transpiration tissue because calcium is not transported in phloem. This may be due to a lack of water, which slows the transportation of calcium to the plant, poor absorption of calcium through the stem, or too much nitrogen in the soil.

Video Calcium deficiency (plant disorder)

Cause

Acid, sandy, or crude soils often contain less calcium. Uneven soil moisture and excessive use of fertilizers can also cause calcium deficiency. Sometimes, even with enough calcium in the soil, it can be in an insoluble form and then can not be used by plants or can be attributed to "transport proteins". Soils containing high phosphorus are particularly vulnerable to creating insoluble calcium forms.

Maps Calcium deficiency (plant disorder)

Symptoms

Symptoms of calcium deficiency appear initially as local tissue necrosis leading to inhibited plant growth, necrotic leaf edges on young leaves or leaf curling, and finally terminal shoot deaths and root tips. Generally, new growth and rapidly growing plant tissues are affected first. Mature leaves are rarely affected because calcium accumulates at high concentrations in older leaves.

Specific symptoms of the plant include:

AppleÃ,

'Bitter pit' - the skin of the fruit forms a hole, brown spots appearing on the skin and/or on the meat and flavor of the area is bitter. This usually happens when the fruit is in storage, and the Bramley apple is very susceptible. Associated with boron deficiency, apple "water defecates" rarely show the effect of bitter holes.

Cabbage and Brussels sprouts

Internal browning and "burn tip"

CarrotÃ,

'Place of perforated' - oval spots develop into craters that may be attacked by other disease-causing organisms.

Celery

Growth is inhibited, central leaves are inhibited.

Tomato and chilli

'Blossom end rot' - Symptoms begin as rotting and dry areas at the tip of the fruit, farthest from the stem, not all the fruit on the skeleton should always be affected. Sometimes the rapid growth of high nitrogen fertilizers can aggravate the final spoilage of decay. Managing water and preventing water pressure is the key to minimizing its appearance.

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Treatment

Calcium deficiency can sometimes be improved by adding agricultural lime to acid soils, aiming at pH 6.5, unless the subject plants specifically prefer acidic soils. Organic matter should be added to the soil to increase its moisture retaining capacity. However, due to the nature of the disturbance (ie poor transport of calcium to the low transpiration tissue), the problem can not be generally cured by adding calcium to the roots. In some species, the problem can be reduced by spraying prophylaxis with risky tissue calcium chloride.

Crop damage is difficult to reverse, so corrective action should be taken immediately, an additional application of calcium nitrate at 200 ppm of nitrogen, for example. Soil pH should be tested, and corrected if necessary, because calcium deficiency is often associated with low pH.

Early fruits will generally have the worst systems, with them usually reduced during the season. Preventive measures, such as irrigating before very high temperatures and stable irrigation will minimize the occurrence.

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See also

• Blackheart (plant disease)
• Nutrition plants
• Horticulture

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References

• Hopkins, William G., Norman P.A. HÃÆ'¼ner. Introduction to Plant Physiology . London: Wiley & amp; Children, 2009.
• Nguyen, Ivy. "Increase Vitamin D2 with Ergosterol for Calcium Absorption in Cane." UC Davis COSMOS. July 2009. October 17, 2010. NGUYEN_IVY.pdf
• Simon, E.W. "Symptoms of Calcium Deficiency in Plants." New Phytologist 80 (1978): 1-15.

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Note

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External links

• Blossom ended Play video
• Examples of rotting flower tips on Roman tomatoes
• Blossom End Rot - symptoms, causes, and management - The Ohio State University Extension

Source of the article : Wikipedia