Tomato – Page 2 – Gramophone

Late blight of tomato

first appears of Late blight on the lower, older leaves as water-soaked, grey-green spots.
As the disease matures, these spots darken and a white fungal growth forms on the undersides. Eventually, the entire plant will become infected.
Crops can be severely damaged.
The disease spreads quickly in fields and can result in total crop failure if untreated

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Apply FYM before 15 days of transplanting in the main field.
At the time of transplanting use Calcium Nitrate @ 10 KG/ acre.
Twice spray of calcium EDTA @ 150 Gm/acre at the time of appear deficiency symptoms.

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Symptoms are primarily visible in the rapidly growing areas because of the very low mobility of calcium in plant tissues.
Calcium-deficient leaves show chlorosis and then necrosis around the base of the leaves.
The plants become flaccid; dead spots appeared on the upper stems and the growing apex died.
Upper leaf coloration initially was a darker green, but, later turning yellow at the edges and died.
Fruits showing blossom end rot were found to ripen less rapidly. Blossom end rot is closely associated with Ca deficiency of the fruit.

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first appears of Late blight on the lower, older leaves as water-soaked, grey-green spots.
As the disease matures, these spots darken and a white fungal growth forms on the undersides. Eventually, the entire plant will become infected.
Crops can be severely damaged.
The disease spreads quickly in fields and can result in total crop failure if untreated

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13/09/2019

Weed Control in Tomato Crop:-

About 2-3 hoeing up are essential at the initial stage of plant growth.
Application of pre-emergence weedicide of Pendimethalin 30% SC @ 700 ml/Acre with one hand weeding 45 days after transplanting is more effective for weed control.
Application of post-emergence weedicide of Metribuzin 70% WP @ 300 Gm/Acre 15 days after transplanting.
Application of mulches like straw, saw dust and black polythene are used in controlling weeds, moisture conservation for better quality of yield.

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Use resistant varieties.
Do use deep summer plowing to control root-knot nematode.
Neem cake at the rate of 80 Kg/Acre should be applied for effective control.
Carbofuran 3G at the rate of 8 kg/acre should be applied as a soil treatment.
Paecilomyces lilacinus-1% WP @ 10 g / kg seed for seed treatment, 50 gm / meter sq Nursery Treatment, 2.5 to 5 kg/ Hectare Soil application.

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Damage:-

The nematode attacks the roots and produces tiny galls.
The infected plants show symptoms of withering and wilting of leaves.
It blocks the movement of nutrients and water in the plant system and subjected to wilt and finally leads to death.
The growth of the plant is stunted by fruiting capacity adversely affected.
Yellow of the foliage and wilting of the upper leaves occurs.

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