How often to apply
: ere is no rule for this. Different regions, cli-
mate, plants, diseases, pests all call for different approach. Generally, you
will use natural pesticide in 2-days shorter cycle compared to chemical pes-
ticides. Application in early stage of growth is important because leaves are
tender and prone to pest damage. Spray thoroughly. Use repeatedly when
infestation is serious. In this case, take out the JS and use only JHS and
JWA. You can have 2-3 hours term or 12 hours term between irst and sec-
ond applications. You can spray in the evening and again next morning.
When to apply
: Apply when humid. If pesticide evaporates, it is inef-
fective. What we want to do is to coat the pest and/or pathogens with pes-
ticidal substance and keep them wet for as long as possible. Early morning
and sunset are good times for application.
ULC영어본문.qxp_레이아웃 1 2016. 2. 19. 오후 6:46 페이지 302
Natural Pesticides
●
303
Do'stlaringiz bilan baham: |