Naphthalene acetic acid (NAA) is an auxin plant regulator. Inopinda mumuviri wechirimwa kuburikidza nemashizha, nyoro epidermis uye mbeu, uye inotakurwa kune zvikamu zvine simba rekukura (nzvimbo dzekukura, nhengo dzechidiki, maruva kana michero) nekuyerera kwezvokudya, zvinonyanya kukurudzira kukura kwetipi yemidzi (rooting powder) , kukonzera maruva, kudzivirira maruva nemichero inowira, kuumba michero isina mhodzi, kukurudzira kukura kwekutanga, kuwedzera kugadzirwa, etc. Inogonawo kuwedzera kukwanisa kwechirimwa kudzivisa kusanaya kwemvura, kutonhora, zvirwere, munyu uye alkali, uye mhepo inopisa yakaoma.

Indole-3-butyric acid (IBA) inogadzirisa kukura kwechirimwa iyo inogona kukurudzira kukura kwechirimwa uye kusimukira, kuita kuti zvidyarwa zvive zvakasvibirira uye zvakasimba, uye kuvandudza kusadzivirirwa kwechirimwa uye kusagadzikana kusagadzikana.

Brassinolide (BRs) isimba rinoshanda rekukura kwechirimwa rinoshandiswa kuderedza kukuvadzwa kwezvipembenene. Brassinolide (BRs) inogona kubatsira zvirimwa kuti zvitangezve kukura, nekukurumidza kuvandudza mhando yezvigadzirwa zvekurima uye kuwedzera goho, kunyanya mukuderedza kukuvadzwa kwemishonga yesora. Inogona kukurumidzira kuumbwa kwemaamino acids mumuviri, kugadzira maamino acids akarasika nekuda kwekukuvadzwa kwemushonga wezvipembenene, uye kusangana nezvinodiwa zvekukura kwechirimwa, nekudaro kuderedza kukuvadzwa kwemushonga.

Defoliant inodzora kukura iyo inogona kusimudzira zvirimwa kuti zvidonhe mashizha muvhuvhu, kupfupisa nguva yekukura kwechirimwa, kuvandudza kushanda kwechirimwa photosynthesis, uye kuwedzera chirimwa kuramba kushushikana uye kutonhora. Iyo nzira yekuita ye defoliants ndeye kudzora mwero we endogenous mahormone, kuchembera mashizha, uye kukurudzira kudurura. Kune zvinomera zvave zviri munzvimbo yakadzika yekushisa kwenguva yakareba, kushandiswa kwakakodzera kwe defoliants kunogonawo kukurudzira zvinobudirira kukura kwavo nekukura.