Seed Treatment - Using Insecticides & Fungicides

By TamilNadu Agricultural University on 23 Feb 2019 | read

Insecticide and Fungicide seed treatment

Seed treatment is a term that describes both products and processes. The usages of specific products and specific techniques can improve the growth environment for the seed, seedlings and young plants. Seed treatment complexity ranges from a basic dressing to coating and pelleting.

1. Seed dressing: This is the most common method of seed treatment. The seed is dressed with either a dry formulation or wet treated with a slurry or liquid formulation. Dressings can be applied at both farm and industries. Low cost earthen pots can be used for mixing pesticides with seed or seed can be spread on a polythene sheet and required quantity of chemical can be sprinkled on seed lot and mixed mechanically by the farmers.

2. Seed coating: A special binder is used with a formulation to enhance adherence to the seed. Coating requires advanced treatment technology, by the industry.

3. Seed pelleting: The most sophisticated Seed Treatment Technology, resulting in changing physical shape of a seed to enhance pelletibility and handling. Pelleting requires specialized application machinery and techniques and is the most expensive application.

Recommendation of seed treatment for different crops

S.No.Name of CropPest/DiseaseSeed Treatment
 1.SugarcaneRoot rot, wilt

Carbendazim (0.1%) 2 gm/kg seed
Trichoderma spp. 4-6 gm/kg. seed

 2.SunflowerSeed rotJassids, WhiteflyTrichoderma viride @ 6 gm/kg  seed.Imidaclorprid 48FS @ 5-9 gm a.i. per kg. seedImidacloprid 70WS @ 7 gm a.i. per kg. seed 


3.Pigeon pea Wilt,
Blight and Root rot
Trichoderma spp. @ 4 gm/kg. seed
4.GramWilt and damping offSeed treatment with Trichoderma viridi 1% WP @ 9 gm/kg seeds 
Combination of Carbendazim with carbosulfan @ 0.2% Carbendazim with Thiram with carbosulfan @ 0.2%
Treat the seed with Chlorpyriphos 20 EC @ 15-30 ml a.i./kg seed.


5.RiceRoot rot disease other insects/pestsBacterial shealth blightTrichoderma 5-10 gm/kg. seed (before transplanting)
Chloropyriphos 3gm/kg seed.Pseudomonas flourescens 0.5% W.P. 10 gm/kg.
6.WheatTermiteBunt/False smut/loose smut/covered smutTeat the seed before sowing with any one of the following insecticides.
i) Chlorpyriphos @ 4 ml/kg seed or Endosulfan @ 7ml / kg seedsThiram 75% WP
Carboxin 75 % WP
Tebuconazole 2 DS @ 1.5 to 1.87 gm a.i. per kg seed.
T. viride 1.15 % WP @ 4 gm/kg.
7.BarleyLoos smut 
Covered smut
Leaf stripeTermite
Carboxin 75% WP
Thiram 75% WP @ 1.5 to 1.87 gm a.i./kg seed. Treat the seed with Chlorpyriphos @ 4 ml/kg seed.

Recommendation of seed treatment for Vegatable crops

S.No.Name of CropPest/Disease

Seed Treatment


 1.ChilliesAnthracnose spp.
Damping off
Seed treatment with
Trichoderma viride 4g/kg, Carbandazim @ 1g/100 gm seed.

 2.PeaRoot rot White rotSeed treatment with
  1. Bacillus subtilis
  2. Pseudomonas  fluorescens

Soil application @ 2.5 – 5 kg in 100kg FYM (or)

1. Carbendazim or Captan 2 gm/kg. seed 2.Thiram+Carbendazim 2gm/kg seed

 3.BhendiRoot knot nematode Paecilomyces lilacinus and Pseudomonas  fluorescens @ 10 gm/kg as seed dresser.

 4.TomatoSoil borne infection  of fungal disease
Early blight 
Damping offWilt
T. viride @ 2 gm/100gm seed.
Captan 75 WS @ 1.5 to 2.0 gm a.i./litre for soil drenching.Pseudomonas fluorescens  and V. clamydosporium @ 10gm/kg as seed dresser.

 5.CorianderWiltTrichoderma viride @ 4 gm./kg seed.

 6.BrinjalBacterial wiltPseudomonas  fluorescens @ 10gm/kg.

 7.Leguminous VegetablesSoil borne infectionNematodeTrichoderma viride @ 2 gm/100gms. seed.Carbofuran/Carbosulfan 3% (w/w)

 8.Cruciferous  vegetables
(Cabbage, Cauliflower, Broccoli, Knol-khol, radish)
Soil / Seed  borne  diseases (Damping off) Root knot nematodeSeed treatment with Trichoderma viridi  @ 2 g / 100 g  seeds 
Captan 75% WS @ 1.5 to 2.5 gm a.i./litre for soil drenching.Pseudomonas  fluorescens and Verlicillium clamydosporium @ 10gm/kg seed as seed dresser

 9.PotatoSoil and Tuber borne diseasesSeed treatment with MEMC 3% WS @ 0.25% or boric acid 3% for 20 minuts before storage.

 10.CapsicumRoot knot nematodePseudomonas fluorescens 1% WP, Paecilomyces lilacirius and Verticillium chlamydosporium 1% WP @ 10g/kg as seed dresser.