Lecture 24 PESTICIDE APPLICATION METHODS
The desired effect of a pesticide can be obtained only if it si applied by an
appropriate method in appropriate time. The method of application depends on nature
of pesticide, formulation, pests to be managed, site of application, availability of
water etc.
1. Dusting : Dusting is carried out in the morning hours and during very light air
stream. It can be done manually or by using dusters. Some times dust can be
applied in soil for the control of soil insects. Dusting is cheaper and suited for dry
land crop pest control.
2. Spraying : Spraying is normally carried out by mixing EC (or) WP formulations
in water. There are three types of spraying.
Spray Droplet Area Equipment used
fluid (litre size covered
per acre) per day
a) High volume spraying 200-400 150 2.5 ac Knapsack, Rocker
sprayers
b) Low volume spraying 40-60 70-150 5.6 ac Power sprayer, Mist
blower
c) Ultra low volume 2-4 lit. 20-70 20 ac ULV sprayer,
spraying Electrodyn sprayer
3. Granular application : Highly toxic pesticides are handled safely in the form
of granules. Granules can be applied directly on the soil or in the plant parts.
The methods of application are
a) Broadcasting : Granules are mixed with equal quantity of sand and
broadcasted directly on the soil or in thin film of standing water. (eg.)
Carbofuran 3G applied @ 1.45 kg/8 cent rice nursery in a thin film of water
and impound water for 3 days.
b) Infurrow application : Granules are applied at the time of sowing in furrows
in beds and covered with soil before irrigation. (eg.) Carbofuran 3G applied @
3 g per meter row for the control of sorghum shootfly.
c) Side dressing : After the establishment of the plants, the granules are applied
a little away from the plant (10-15 cm) in a furrow.
The desired effect of a pesticide can be obtained only if it si applied by an
appropriate method in appropriate time. The method of application depends on nature
of pesticide, formulation, pests to be managed, site of application, availability of
water etc.
1. Dusting : Dusting is carried out in the morning hours and during very light air
stream. It can be done manually or by using dusters. Some times dust can be
applied in soil for the control of soil insects. Dusting is cheaper and suited for dry
land crop pest control.
2. Spraying : Spraying is normally carried out by mixing EC (or) WP formulations
in water. There are three types of spraying.
Spray Droplet Area Equipment used
fluid (litre size covered
per acre) per day
a) High volume spraying 200-400 150 2.5 ac Knapsack, Rocker
sprayers
b) Low volume spraying 40-60 70-150 5.6 ac Power sprayer, Mist
blower
c) Ultra low volume 2-4 lit. 20-70 20 ac ULV sprayer,
spraying Electrodyn sprayer
3. Granular application : Highly toxic pesticides are handled safely in the form
of granules. Granules can be applied directly on the soil or in the plant parts.
The methods of application are
a) Broadcasting : Granules are mixed with equal quantity of sand and
broadcasted directly on the soil or in thin film of standing water. (eg.)
Carbofuran 3G applied @ 1.45 kg/8 cent rice nursery in a thin film of water
and impound water for 3 days.
b) Infurrow application : Granules are applied at the time of sowing in furrows
in beds and covered with soil before irrigation. (eg.) Carbofuran 3G applied @
3 g per meter row for the control of sorghum shootfly.
c) Side dressing : After the establishment of the plants, the granules are applied
a little away from the plant (10-15 cm) in a furrow.
