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pyrethrum
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Pyrethrum flowers
Pyrethrum flowers
By Charles B. Gnadinger
The use of sulphur in the control of truck crop and cane fruit insects and diseases
The use of sulphur in the control of truck crop and cane fruit insects and diseases
By Alfred Fenton
Pyrethrum, the natural insecticide
By International Symposium on Recent Advances with Pyrethrum the Natural Insecticide University of Minnesota 1972.
El cultivo del pelitre ..
El cultivo del pelitre ..
By Guatemala. Dirección general de agricultura.
El piretro en el Ecuador
El piretro en el Ecuador
By Luis Werner Levy
"Keniya"-san jochūgiku
"Keniya"-san jochūgiku
By Nihon Yushutsu Nōsanbutsu Kabushiki Kaisha
A study of pyrethrosin, an insecticidally inert constituent of pyrethrum flowers
A study of pyrethrosin, an insecticidally inert constituent of pyrethrum flowers
By William Alexander Stanton