نتایج جستجو برای: ovicidal
تعداد نتایج: 316 فیلتر نتایج به سال:
Impact of brown seaweed, Padina pavonica (Linn.) chloroform, and benzene extracts were evaluated against an economically important cotton pest, Dysdercus cingulatus (Fab.) (Pyrrhocoridae). The result reveled that between the two solvents, benzene extracts of P. pavonica caused more nymphal mortality. It reduce D. cingulatus egg hatchability than chloroform extract. Benzene extract also reduced ...
The objective of this study was to use chlamydospores of the fungus Pochonia chlamydosporia (isolates VC1 and VC4) against Toxocara canis eggs in a 15-day in vitro assay. One thousand T. canis eggs were placed in Petri dishes containing 2% water agar medium with different concentrations of chlamydospores (1,000, 10,000 or 100,000) of each fungal isolate of P. chlamydosporia (treated groups) and...
One of the main pests on rice plants difficult to control is Leptocorisa acuta . This has a distinctive odor and attacks in generative phase. L. by sucking grains at milk stage so that become empty quality reduced. High attack intensity will cause decrease production. The most widely used method controlling these use synthetic insecticides. insecticides among farmers tends be excessive damage e...
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