Udzu wamchenga ndi chomera "chomata" chomwe chimawoneka ngati udzu.Nthawi zambiri imafika pa kapinga woonda, makamaka m'zaka zouma.Choncho, kulamulira bwino kwa udzu ndi udzu wandiweyani ndi wathanzi.Komabe, ngati udzu wanu ndi woonda kwambiri masika ano ndipo mchenga wa udzu wa chaka chatha ndi vuto, gwiritsani ntchito mankhwala ophera udzu asanatulukire mchengawo usanawonekere.Komabe, si mankhwala onse ophera udzu asanamere omwe ali othandiza.Zinthu zitatu zomwe zingathandize kuchepetsa kudulidwa kwa udzu ndi udzu, pendimethalin ndi propylene diamine.
Oryzalin amagulitsidwa pansi pa dzina la Ageruo.Ikhoza kugwiritsidwa ntchito pa udzu wonse wa nyengo yofunda ndi udzu wamtali wa fescue.Kupatula fescue ndi udzu wina wautali, sayenera kugwiritsidwa ntchito pa udzu mu nyengo yozizira, monga Kentucky bluegrass.Oryzalin imathanso kugulitsidwa ndi benefin ngati chophatikiza cha Green Light Amaze.Mofanana ndi udzu wokha, ukhoza kugwiritsidwa ntchito pa udzu wonse wa nyengo yofunda ndi udzu wautali wa fescue.Kupatula fescue ndi udzu wina wautali, sayenera kugwiritsidwa ntchito pa udzu mu nyengo yozizira, monga Kentucky bluegrass.
Pendimethalin imagulitsidwa ngati Pendulum pamsika, ndipo palinso mayina ena angapo.Kumbali ya eni nyumba, imagulitsidwa ngati Scotts Halts.Ndi bwino kugwiritsa ntchito Pendimethalin padera, theka loyamba lidzagwiritsidwa ntchito pafupi ndi April 15, ndipo gawo lachiwiri lidzagwiritsidwa ntchito pa June 1st.Kapena, chitani ntchito yoyamba pamene mtengo wa bauhinia uli pachimake, ndipo masabata asanu ndi limodzi pambuyo pa sabata lachiwiri.
Propylenediamine imagulitsidwa pansi pa dzina lamalonda Barricade.Amagulitsidwanso ngati katundu wa eni nyumba Howard Johnson Crabgrass Control Plus ndi 0.37 Prodiamine 00-00-07.Itha kugwiritsidwa ntchito pa udzu wathu wamba wamba.Pafupifupi pa Epulo 15 kapena maluwa a bauhinia, spartina amagwiritsidwabe ntchito.Ntchito imodzi yokha ndiyofunikira pachaka.
Palibe “mankhwala ophera udzu” amene angaletsedwe kotheratu, koma aliyense ayenera kuthandiza.Quinclorac (drive) imatha kuwongolera mbande zikamera, makamaka ngati mchenga uli pamlingo wa mbande.