do pest control in my rice fields

every week I spray pest poison in the fields. and I've been spraying pest poison 4 times. now my paddy is 50 days old it took another 40 days for the harvest to arrive. I am very grateful until now my paddy's condition is fine. but I saw so many insects perched on my rice field. such as grasshoppers and tiny butterflies. and I saw some rice leaves that looked red. today I used 3 pest poison products.

the first is buztox. it is poison with contact and stomach types. this poison will kill the tiny butterfly pests. the dose for this poison is 2 bottle caps.

the second one sankill. this pest poison left last week. so I added it too. This poison will kill the caterpillar and kempinding pests. 1 bottle cap of this poison.

the third is nordox. This is also Pest poison left over from last week. this is the powder model. the function of this poison for blast disease / crackle. the dose for this poison is one tablespoon.

I sprayed 6 tanks of Hama poison. and will be sprayed again in the following week. I hope the pests don't attack my rice.