Temperate Vegetables

PESTS

Pea thrips:

• Pea thrips may be problem in very dry weather.
• Adult feed inside the flower, while young ones feed on leaves and pods.
• They lay their eggs in the pods.
• Mottled patches appear which later turn brown.
• Yield is severely affected if attack persists.

Control measures:

• Spray the crop with cypermethrin (0.0075%) or dichlorovos (0.04%) as soon as the attack is noticed.
• If harvesting coincides with spray, spray immediately after harvest and wait for 10-15 days for another harvest.

Pea leaf miner

• More serious damage is caused by larvae.
• They make prominent whitish tunnels in the leaves which interfere with proper photosynthesis activity of plants.
• The manufacture of the food by leaves is severely affected.

Control measures:

• The population of the pea leaf miner is naturally kept under control by a large number of larval and pupal parasitoids which include Braconids and Eulophids.
• Application of oxy-demeton methyl (0.025%) or dichlorvos (0.04%) during the second week of February helps in reducing the population of this pest.

Pea pod borer:

• Caterpillars feed on foliage and later bore into the pods to eat the developing seeds.

Control measures:

• Spray carbaryl (0.1%) on the crop. Repeat after 15 days if attack persists.

SEED PRODUCTION

• The cultivation practices which are followed for table crop are same for seed crop also. In addition to this,
• Isolation distance of 10 meter for certified and 20 meter for foundation seeds between two cultivars should be followed.
• Rogue out off type and diseased plants before flowering and during pod setting stage.
• Harvesting the crop when pods are fully ripe and plants start drying.

SEED CERTIFICATION STANDARDS
A. Field Standards

a. General requirements

Isolation

• Pea seed fields should be isolated from the contaminants as shown the table given below:

Contaminants	Minimum Distance (meters)
	Foundation Seed	Certified Seed
Fields of other varieties	10	5
Fields of the same variety not conforming to varietal purity requirements for certification	10	5

b. Specific requirements

Factors	Maximum permitted (per cent)
	Foundation Seed	Certified Seed
Off types	0.10	0.20

B. Seed Standards

Factors	Standards For Each Class
	Foundation Seed	Certified Seed
Pure seed (minimum %)	98	98
Inert matter (maximum) %	2	2
Other crop (maximum) Number/Kg	--	--
Weed seeds (maximum) Number/kg	--	10
Other distinguishable varieties (maximum) Number/ kg	5	10
Germination including hard seeds (minimum) %	75	75
Moisture (maximum) %	9	9
For vapour-proof containers (maximum) %	8	8