' ▁met abol ism ▁and ▁termin ating ▁sp ore ▁production . ▁Sul fur ▁and ▁Fish ▁O il ▁+ ▁Ses ame ▁O il ▁is ▁a ▁mixture ▁effective ▁against ▁pow der y ▁mil de w . ▁ ▁Mil k ▁has ▁long ▁been ▁popular ▁with ▁home ▁garden ers ▁and ▁small - scale ▁organ ic ▁grow ers ▁as ▁a ▁treatment ▁for ▁pow der y ▁mil de w . ▁Mil k ▁is ▁dil uted ▁with ▁water ▁( typ ically ▁ 1 : 1 0 ) ▁and ▁sp rayed ▁on ▁sus cept ible ▁plants ▁at ▁the ▁first ▁sign ▁of ▁in fection , ▁or ▁as ▁a ▁prevent ative ▁measure , ▁with ▁repeated ▁week ly ▁application ▁often ▁cont rolling ▁or ▁elimin ating ▁the ▁disease . ▁Studies ▁have ▁shown ▁milk ' s ▁effect iveness ▁as ▁compar able ▁to ▁some ▁conventional ▁fung ic ides , ▁and ▁better ▁than ▁ben om yl ▁and ▁fen ar im ol ▁at ▁higher ▁concentr ations . ▁Mil k ▁has ▁proven ▁effective ▁in ▁tre ating ▁pow der y ▁mil de w ▁of ▁summer ▁squ ash , ▁p ump kins , ▁ ▁g rap es , ▁and ▁ros es . ▁The ▁exact ▁mechanism ▁of ▁action ▁is ▁unknown , ▁but ▁one ▁known ▁effect ▁is ▁that ▁fer rog lob ul in , ▁a ▁protein ▁in ▁whe y , ▁produces ▁o xygen ▁radical s ▁when ▁exposed ▁to ▁sun light , ▁and ▁contact ▁with ▁these ▁radical s ▁is ▁dam aging ▁to ▁the ▁fung us . ▁ ▁D il ute ▁sp ray s ▁containing ▁sod ium ▁b ic ar bon ate ▁( b aking ▁s