depends on the pesticide and the pest If the pest is on the plant the pesticide must contact the plant.
The pesticide must contact the pest.
ampalaya
it is called a botanical pesticide
the pesticides in the plant wouldn't be excreted out of the plant although it had rained afterwards.. this is because, the chemical substances in the pesticide was diffused via the roots of the plant since the chemical substances are more concentrated than the fluid in the plant... Thus, the chemical substance are hypertonic to the plant roots... the substances from the roots will be transported through the xylem tissue of the plant until it reaches the leaves... so the pesticide is contained in the plant... the insect eats the plant and will eventually die afterwards... therefore, the rain couldn't easily wash out the pesticide.... :)
Plant Pesticide
Plant pesticide
the plant will grow or close around an object touching it
a wheat germ is a germ made from wheat like a pesticide
I have had several experiences that the nozzles of my Black Flag pesticide cans do not work. I pushed it down but the gas just did not come out. Is the nozzle jammed inside the can? Somehow the pressurization mechanism does not work?
Reduce Pesticide Use.
chemical pesticides are very harmful for our health and caused many diseases like skin cancer etc. it also helps better plant growth
by using modern pesticides because only a small concentration is needed to work and spraying the pesticide way before harvesting
pesticide