Mineral Deficiencies - Revision history

P>Pacsoa at 17:57, 9 August 2024

2024-08-09T17:57:57Z

← Older revision		Revision as of 17:57, 9 August 2024
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	Most species of palms prefer acid soils well enriched with humus;		Most species of palms prefer acid soils well enriched with humus;
	especially palms that occur in rainforest areas. Palms such as		especially palms that occur in rainforest areas. Palms such as
	''Brahea'' species, ''[[Phoenix dactylifera]]'',		''Brahea'' species, ''[Phoenix dactylifera]'',
	''P. theophrasti'' and ''[[Chamaerops humilis]]''		''P. theophrasti'' and ''[Chamaerops humilis]''
	will tolerate a wider range of soils, sometimes even		will tolerate a wider range of soils, sometimes even
	alkaline, that is soils containing lime. Soil acidity or lack		alkaline, that is soils containing lime. Soil acidity or lack
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	Frizzled emerging leaves in		Frizzled emerging leaves in
	''[[Syagrus romanzoffiana]]''		''[Syagrus romanzoffiana]''
	(Arecastrum romanzoffianum) have been found to be due to a		(Arecastrum romanzoffianum) have been found to be due to a
	lack of manganese and can be corrected by the addition of		lack of manganese and can be corrected by the addition of
	manganese sulphate. This problem can occur if the palm is		manganese sulphate. This problem can occur if the palm is
	grown in alkaline soil. It has been found that a deficiency		grown in alkaline soil. It has been found that a deficiency
	of manganese in ''[[Phoenix canariensis]]'',		of manganese in ''[Phoenix canariensis]'',
	''[[Livistona chinensis]]''		''[Livistona chinensis]''
	and ''[[Caryota]]'' species, appears with the new leaves		and ''[Caryota]'' species, appears with the new leaves
	emerging pale green in colour and failing to open properly.		emerging pale green in colour and failing to open properly.
	In cases where this problem has been occurring for some time,		In cases where this problem has been occurring for some time,
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	A zinc deficiency in many palms, particularly		A zinc deficiency in many palms, particularly
	''[[Dypsis lutescens]]'',		''[Dypsis lutescens]'',
	has been reported to be apparent with yellowish undersized		has been reported to be apparent with yellowish undersized
	leaves that have short pinnae which are closely spaced and		leaves that have short pinnae which are closely spaced and
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	[https://images.google.com/images?q=Palm+Mineral+Deficiencies&hl=en&btnG=Google+Search GoogleImages],		[https://images.google.com/images?q=Palm+Mineral+Deficiencies&hl=en&btnG=Google+Search GoogleImages],
	<p>		<p>
	[[Category:~~Palm_Articles~~\|~~Mineral_Deficiencies~~]]		[[Category:Mineral\|Deficiencies]]
	[[Category:Palm\|Mineral_Deficiencies]]		[[Category:Palm\|Mineral_Deficiencies]]

Pacsoa at 13:26, 9 August 2024

2024-08-09T13:26:31Z

← Older revision		Revision as of 13:26, 9 August 2024
Line 93:		Line 93:

	Frizzled emerging leaves in		Frizzled emerging leaves in
	''[Syagrus romanzoffiana]''		''[[Syagrus romanzoffiana]]''
	(Arecastrum romanzoffianum) have been found to be due to a		(Arecastrum romanzoffianum) have been found to be due to a
	lack of manganese and can be corrected by the addition of		lack of manganese and can be corrected by the addition of
	manganese sulphate. This problem can occur if the palm is		manganese sulphate. This problem can occur if the palm is
	grown in alkaline soil. It has been found that a deficiency		grown in alkaline soil. It has been found that a deficiency
	of manganese in ''[Phoenix canariensis]'',		of manganese in ''[[Phoenix canariensis]]'',
	''[Livistona chinensis]''		''[[Livistona chinensis]]''
	and ''[Caryota]'' species, appears with the new leaves		and ''[[Caryota]]'' species, appears with the new leaves
	emerging pale green in colour and failing to open properly.		emerging pale green in colour and failing to open properly.
	In cases where this problem has been occurring for some time,		In cases where this problem has been occurring for some time,
Line 107:		Line 107:

	A zinc deficiency in many palms, particularly		A zinc deficiency in many palms, particularly
	''[Dypsis lutescens]'',		''[[Dypsis lutescens]]'',
	has been reported to be apparent with yellowish undersized		has been reported to be apparent with yellowish undersized
	leaves that have short pinnae which are closely spaced and		leaves that have short pinnae which are closely spaced and

Pacsoa at 13:25, 9 August 2024

2024-08-09T13:25:36Z

← Older revision		Revision as of 13:25, 9 August 2024
Line 4:		Line 4:
	Most species of palms prefer acid soils well enriched with humus;		Most species of palms prefer acid soils well enriched with humus;
	especially palms that occur in rainforest areas. Palms such as		especially palms that occur in rainforest areas. Palms such as
	''Brahea'' species, ''[Phoenix dactylifera]'',		''Brahea'' species, ''[[Phoenix dactylifera]]'',
	''P. theophrasti'' and ''[Chamaerops humilis]''		''P. theophrasti'' and ''[[Chamaerops humilis]]''
	will tolerate a wider range of soils, sometimes even		will tolerate a wider range of soils, sometimes even
	alkaline, that is soils containing lime. Soil acidity or lack		alkaline, that is soils containing lime. Soil acidity or lack

Pacsoa at 13:25, 9 August 2024

2024-08-09T13:25:02Z

← Older revision		Revision as of 13:25, 9 August 2024
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	[https://images.google.com/images?q=Palm+Mineral+Deficiencies&hl=en&btnG=Google+Search GoogleImages],		[https://images.google.com/images?q=Palm+Mineral+Deficiencies&hl=en&btnG=Google+Search GoogleImages],
	<p>		<p>
	[[Category:~~Mineral~~\|~~Deficiencies~~]]		[[Category:Palm_Articles\|Mineral_Deficiencies]]
	[[Category:Palm\|Mineral_Deficiencies]]		[[Category:Palm\|Mineral_Deficiencies]]

Pacsoa: 1 revision imported

2024-08-09T13:22:02Z

1 revision imported

New page

{{PalmSpeciesHeader}}
__NOTOC__
===Mineral Deficiencies:===
Most species of palms prefer acid soils well enriched with humus;
especially palms that occur in rainforest areas. Palms such as
''Brahea'' species, ''[Phoenix dactylifera]'',
''P. theophrasti'' and ''[Chamaerops humilis]''
will tolerate a wider range of soils, sometimes even
alkaline, that is soils containing lime. Soil acidity or lack
of it controls the solubility of nutrients and their
availability to the plant may be reduced if the acidity is
not correct. Palms can tolerate a reasonable range of soil
acidity levels and palms growing in the ground generally do
not develop mineral deficiencies.

Lack of a particular mineral or nutrient is sometimes
visually obvious. It can appear as a change in colour of the
leaves, or leaves that are reduced in size, sometimes
deformed or with necrotic leaf margins.

A deficiency in nitrogen is evident when a general yellowing
of the leaves occurs. Palms lacking nitrogen produce slower
growth and make fewer and often smaller leaves. First the
oldest leaves begin to turn yellow and this eventually
spreads through all of the foliage. In extreme cases, the
foliage can be almost white. Nitrogen can become unavailable
to the plant if the soil is either very acidic or is alkaline.
With palms it is most likely that lime has been applied to
the soil reducing the availability of nitrogen. Alternatively
lack of nitrogen can occur because there is insufficient
nitrogen for the palm in the soil and this can be corrected
with a supplementary feed of urea.

A deficiency of phosphorus will also cause growth to be slow
and in some species of palms the foliage changes to a light
olive-green or even a blueish colour, sometimes even yellow,
and the palm may lack lustre and general vigour. Lack of
phosphorus is relatively uncommon and is most likely to occur
if a palm is planted in poor soils where crops or other
plants have removed that mineral from the soil. It can be
corrected by the application of superphosphate: However it is
unlikely to occur if a fertilizer containing the three
elements nitrogen, phosphorus and potassium is used.
Potassium deficiencies commonly cause the lower leaves of
some palms to become necrotic at the leaf margins. In others
this may develop as spots, blotches or streaks. The necrotic
or dying areas may often be surrounded by pale zones. A
potassium deficiency can occur in wet sandy soils; potassium,
or potash as it is commonly called is very soluble and is
readily leached from the soil. In climates with wet winters,
potash can be leached from the soil and if feeding does not
occur in spring or summer, this deficiency may become
apparent.

A lack of magnesium is evident with signs of interveinal
chlorosis in the oldest leaves. That is the areas of the
leaflets between the veins tend to become yellow. This is
often progressive from the edges of the leaflets inwards. The
rachis and veins of the leaflet may remain green except in
severe cases where the whole leaf may turn yellow.
In some ''Phoenix'' species, particularly
''P. canariensis''
and ''P. reclinata'', the lower leaves sometimes turn
brown and prematurely die off. This has been found to be due
to a deficiency of magnesium and can be corrected by the
application of magnesium sulphate (Epsom salts).
Some palms lose magnesium from their foliage during winter
especially during cold wet periods and the foliage becomes
yellow in colour. A supplementary feed or foliage spray with
magnesium sulphate (Epsom salts) will benefit the plant
particularly in early spring.

Many palms have a high requirement for iron and a lack of
this element will also appear as interveinal chlorosis or an
overall yellowing where it is apparent in the newest leaves
first. When iron is unavailable, the leaves yellow because
they cannot make chlorophyll the essential material needed by
all green plants. Iron becomes less available if the soil is
alkaline, that is when lime has been applied and for palms
this can be corrected by the application of iron chelates or
with sulphate of iron.

An iron deficiency can sometimes occur with a potassium
deficiency as both of these nutrients can become unavailable
if the soil is too alkaline. Coconut Palms growing on sandy
beaches at the edge of coralreefs can often suffer from a
lack of iron or iron and potassium together. In some Pacific
islands, a common remedy is to drive iron nails into the
trunks of Coconut palms so that the palm can absorb some of
the iron as the nails rust. This method works to some extent
but: would be better corrected by the application of the
nutrient to the roots.

Frizzled emerging leaves in
''[Syagrus romanzoffiana]''
(Arecastrum romanzoffianum) have been found to be due to a
lack of manganese and can be corrected by the addition of
manganese sulphate. This problem can occur if the palm is
grown in alkaline soil. It has been found that a deficiency
of manganese in ''[Phoenix canariensis]'',
''[Livistona chinensis]''
and ''[Caryota]'' species, appears with the new leaves
emerging pale green in colour and failing to open properly.
In cases where this problem has been occurring for some time,
the older leaves usually also have a yellowish discoloration
and the palm tends to become water spotted in wet weather.

A zinc deficiency in many palms, particularly
''[Dypsis lutescens]'',
has been reported to be apparent with yellowish undersized
leaves that have short pinnae which are closely spaced and
the plants assume a stunted appearance.

A calcium deficiency in ''Howea'' and
''Chamaedorea'' species has been reported to also produce
stunted new leaves that are deformed in appearance.
Palms grown in pots and containers are more prone to feeding
deficiencies than palms grown in the open grouncL In either
case, it is easier to prevent the problems from occurring
than to try to correct them later. Regular feeding with a
balanced N.P.K. fertilizer containing magnesium and the other
trace minerals will keep a palm healthy and free from these
problems. When deficiencies appear in palms growing in the
ground, particularly large specimens, the most difficult task
is to identify the problem. The application of trace minerals
such as iron, manganese and zinc to the roots of a large palm
may take months to reach the leaves and correct the problem.
Weak solutions of the trace mineral particularly in the form
known as a chelate can be applied by spray to the foliage
during cloudy weather and as they are absorbed, the palm
responds to the corrective measure more rapidly. When trace
minerals are applied, they should be used at the rate
recommended by the manufacturer. Toxicities can be caused by
applying too much of a trace element.

===Extracted from: ===
'''Palms & Cycads''' Beyond the Tropics, Keith Boyer.

===External Links:===
<p>[https://www.google.com/search?q=Palm+Mineral+Deficiencies&num=10&sa=Google+Search Google],
[https://images.google.com/images?q=Palm+Mineral+Deficiencies&hl=en&btnG=Google+Search GoogleImages],
<p>
[[Category:Mineral|Deficiencies]]
[[Category:Palm|Mineral_Deficiencies]]