Farmers can produce their own seed for sowing in the next season only in case of varieties. Hybrid seeds can not be multiplied unless the parental lines are available. The seed produced from hybrid crop cannot be used for next sowing. But in case of varieties the seed produced from a variety grown from certified or seed purchased from seed companies can be used again provided care is taken during multiplication. The crop variety should be grown in isolation i.e. sufficiently away from other field grown with the same crop. The doubtful plants which are not true to type should be removed as and when they are noticed preferably before flowering. The seed produced in this way can be used for 3 -4 years.
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FAQ
Collect suckers from a disease free garden and dip in carbendazim solution before planting. This should follow the soil drenching with carbendazim as a prophylltic treatments.
Spray Pongamia oil or Neem oil 5 ml/l at initial infestation level. If the incidence is severe, spray vertimec 1.9 EC 0.5 ml/l followed by cascade 10 DC 1 ml/l or magister 10 EC 1ml/l. Alternatively, release predatory mite, Amblyseius sp @ 20mites/ plant at moderate levels of the mite populations.
Foliar application of hexaconazole (0.075%) or fenarimol (0.05%)or Topas (0.075%) is recommended for the effective management of powdery mildew in tomato.
If seed is to be stored in moisture previous containers such as paper bags, cloth bags or gunny bags. Seeds should be dried to less than 9 - 10% and seeds should be treated with Captan @ 2 g per kg of seed. If seed is to be stored in polythene covers of > 700 guage seeds should be dried to 5 - 7% moisture and then seeds should be packed in polythene cover and it should be sealed to make it moisture proof.
A management package consisting of spray of diflubenzuron 25 % WP 1g + quinalphos 25 EC 2ml/l or methyl parathion 50 EC 1ml/l; Spodoptera NPV 250 LE /ha; spreading of poison bait consisting of rice bran 10 kg, jaggery 1 kg and chlorpyriphos 20 EC 500ml after making into balls to attract and kill the larvae; use of de-shooted twigs for trapping grown up larvae brings down the pest population.
Foliar application of Mancozeb (0.25%) or COC (0.3%) is recommended for the management of above diseases. Removal of old senescent leaves affected by disease will reduce the spread of secondary infection with field. Staking the crop during rainy season minimizes the incidence of BER.
These seeds lose viability quickly in open storage. Hence, these seeds should be stored in moisture proof containers such as aluminium pouches, polythene cover, tin cans and these should be sealed properly. The moisture content of seeds should be less than 6%. The initial seed quality should be high. Care should be taken while threshing seeds of onion because they are susceptible for mechanical injuries.
- For powdery mildew foliar application of hexaconazole (0.075) or Fenarimal (0.05%) is recommended for the effective management of powdery mildew.
- the Management of downy mildew- Curzte M-8 (0.075%) or Aliette (0.2%) or mancozeb (0.25%) is recommended.
Tomato virus diseases can be managed by Integrated management approaches such as
a). Nursery Stage:
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b). Main field Management:
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Spray endosulfan 35 EC 2ml/l or methyl parathion 50 EC 1ml/l for caterpillar pests and fenitrothion 50 EC 1.5 ml/l or carbaryl 50 WP 3g/l for chaffer beetle control. Whenever thrips damage is severe spray acephate 75 SP 1 g/l or confidor 200 SL 0.4 ml/ l.
For planting, select scale free planting material. Once incidence starts the infested shoots should be cut and burned. Dig the soil and apply carbofuran 3G @ 1 kg ai/ha (33 Kg/ha) and swab the pruned shoots with combination of pongamia oil 10 % and chlorpyriphos 4ml/l. Spray dimethoate 30 EC 2 ml/l + malathion 50 EC 1 ml/l to infested parts of growing plants.
The disease is caused by Peanut bud necrosis virus (PBNV) which is transmitted by thrips (Thrips palmi). This virus is not transmitted through seed.
Chilli virus diseases can be managed by Integrated management approaches such as Seeds:
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b). Main field Management:
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These are assemblies of genotypes or populations representatives of cultivars, genetic stocks and related wild and weedy species.