Trinexapac-ethyl ke ea cyclohexanedione plant growth regulator, gibberellins biosynthesis inhibitor, e laolang kholo e matla ea limela ka ho fokotsa litaba tsa gibberellins. Trinexapac-ethyl e ka monyela ka potlako mme e tsamaiswa ke dikutu tsa dimela le makgasi, mme e bapala karolo e kgahlanong le bodulo ka ho fokotsa bophahamo ba semela, ho eketsa matla a kutu, ho kgothalletsa ho eketseha ha metso ya bobedi, le ho hlahisa metso e tswetseng pele hantle.

Paclobutrazol ke moemeli oa temo o ka fokolisang molemo o moholo oa kholo ea limela. E ka monngoa ke metso ea lijalo le makhasi, ea laola kabo ea limatlafatsi tsa semela, ea liehisa sekhahla sa kholo, ea thibela kholo e ka holimo le bolelele ba kutu, le ho khutsufatsa sebaka sa internode. Ka nako e ts'oanang, e khothalletsa phapang ea lipalesa, e eketsa palo ea lipalesa, e eketsa sekhahla sa ho beha litholoana, e potlakisa karohano ea lisele.

Ho kopanngoa ha li-regulator tsa kholo ea limela le li-fungicides ho itšetlehile ka mochine oa liketso tsa mahlahana, tsamaiso ea tsamaiso, ho tlatsana ha lintho tse laoloang, le hore na ho tla ba le antagonism ka mor'a ho kopanya. Maemong a mang, joalo ka ho fihlela sepheo sa ho thibela mafu kapa ho matlafatsa ho hanyetsa mafu a limela, ho khothaletsa kholo ea semela kapa ho lema lipeo tse matla.

Naphthalene acetic acid (NAA) ke molaoli oa semela sa auxin. E kena 'meleng oa semela ka makhasi, li-epidermis tse bonolo le lipeo,' me e isoa likarolong tse nang le khōlo e matla (lintlha tsa kholo, litho tse nyenyane, lipalesa kapa litholoana) ka phallo ea limatlafatsi, e khothalletsang nts'etsopele ea lintlheng tsa metso (rooting powder) , ho etsa lipalesa, ho thibela lipalesa le litholoana tse oeleng, ho etsa litholoana tse se nang peo, ho khothalletsa khōlo ea pele, tlhahiso e ntseng e eketseha, joalo-joalo E ka boela ea ntlafatsa bokhoni ba semela ho hanela komello, serame, maloetse, letsoai le alkali, le meea e chesang e omileng.