1. Role and deficiency symptoms of micronutrients in Tomato

2. Introduction
Micronutrients are used in very small amounts but are important to plant development as the major nutrients
They improve the quality of produce
Micronutrient deficiencies are emerging in intensively cultivated lands
Micronutrients extensively studied for tomato are B, Fe, Mn, Mo and Zn

3. 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

4. Boron deficiency symptoms
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 kg/ha can overcome deficiency. Foliar spray of 0.2 – 0.3% boric acid solution is also recommended

5. Boron deficiency symptoms in tomato
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6. Role and deficiency symptoms of Iron in Tomato
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

7. Iron deficiency symptoms in tomato
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8. Role and deficiency symptoms of Zinc in Tomato
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

9. Zinc deficiency symptoms in tomato
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10. Role and deficiency symptoms of Manganese in Tomato
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

11. Manganese deficiency symptoms in tomato
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12. Role and deficiency symptoms of Molybdenum in Tomato
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

13. Molybdenum deficiency symptoms in tomato
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14. 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

15. THANK YOU