Transcript Role and deficiency symptoms of micronutrients in Tomato

Role and deficiency symptoms of
micronutrients in Tomato
Role and deficiency symptoms of micronutrient in Tomato
Introduction
 Micronutrients are used in very
amounts but are important to
development as the major nutrients
small
plant
 They improve the quality of produce
 Micronutrient deficiencies are emerging in
intensively cultivated lands
 Micronutrients extensively studied
tomato are B, Fe, Mn, Mo and Zn
for
Role and deficiency symptoms of micronutrient in Tomato
Role of Boron in Plants
 Essential for germination of pollen grains
and growth of pollen tubes
 Essential for seed and cell wall formation
 Necessary for sugar translocation
 Affects nitrogen and carbohydrate
 Promotes fruit maturity
Role and deficiency symptoms of micronutrient in Tomato
Boron deficiency symptoms
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Poor root growth
Death of cells of shoot apex
Stems stiff and terminal buds die
Lateral shoots develop giving plant flat top
Leaves highly purple, brown and yellow tinted
Fruits pitted and corky areas in skin
Ripening uneven and cracking of fruits
Application of borax 2.0-3.0 kg/ha can overcome
deficiency. Foliar spray of 0.2 – 0.3% boric acid
solution is also recommended
Role and deficiency symptoms of micronutrient in Tomato
Boron deficiency symptoms in tomato
Source: http://5e.plantphys.net/
article.php?ch =t&id=289
Source:http://www.agnet.org/library.php?func=view&id=
20110804101148&type_id=2
Role and deficiency symptoms of micronutrient in Tomato
Role and deficiency symptoms of Iron in Tomato
Role
 Promotes formation of chlorophyll
 Acts as an oxygen carrier
 Part of reactions involving cell division and growth
Deficiency Symptoms
 Leaves show strong chlorosis at the base with some
green netting
 Interveinal chlorosis of the youngest leaves results
into overall chlorosis
 Bleached areas often develop necrotic spots
Role and deficiency symptoms of micronutrient in Tomato
Iron deficiency symptoms in tomato
Source: http://5e.plantphys.net/
article.php?ch=t&id=289
Source:http://www.agnet.org/library.php?func=view&id=20110
808112105&type_id=7
Role and deficiency symptoms of Zinc in Tomato
Role
Aids plant growth hormones and enzyme system
Necessary for chlorophyll production
Necessary for carbohydrate formation
Necessary for starch formation
Aids in seed formation
Deficiency Symptoms
Yellowing between veins of new growth
Terminal (end) leaves may form a rosette
Role and deficiency symptoms of micronutrient in Tomato
Zinc deficiency symptoms in tomato
Source: http://5e.plantphys.net/article.php?ch=t&id=289
Role and deficiency symptoms of micronutrient in Tomato
Role and deficiency symptoms of Manganese in Tomato
Role
Functions as a part of certain enzyme systems
Aids in chlorophyll synthesis
Increases the availability of P and Ca
Deficiency Symptoms
 Slow plant growth
 Younger leaves turn pale yellow, often starting
between veins. May develop dark or dead spots
 Leaves, shoots and fruit diminished in size
 Failure to bloom
Role and deficiency symptoms of micronutrient in Tomato
Manganese deficiency symptoms in tomato
Source:http://apps.rhs.org.uk/advice
search/Profile.aspx?pid=456
Source:http://5e.plantphys.net/article.ph
p?ch=t&id=289
Role and deficiency symptoms of micronutrient in Tomato
Role and deficiency symptoms of Molybdenum in Tomato
Role
 Required to form the enzyme "nitrate reductase”
 Aids in the formation of legume nodules
 Needed to convert inorganic phosphates to organic
forms in the plant
Deficiency Symptoms
 Older leaves yellow, remaining foliage turns light green
 Leaves can become narrow and distorted
Role and deficiency symptoms of micronutrient in Tomato
Molybdenum deficiency symptoms in tomato
Source:http://5e.plantphys.net/article.ph
p?ch=t&id=289
Role and deficiency symptoms of micronutrient in Tomato
Let us sum up
 Each plant prefers a specific pH range to be able to
access the micronutrients nutrients in the soil. The
pH should be close to 7 for better absorption of
nutrients
 Plant micronutrient deficiencies often manifest as
foliage discoloration or distortion
 If micronutrient deficiency persists it should be
corrected by external application in right quantity in
right time to get optimum yield