Indole-3-butyric acid (IBA) bụ onye na-ahụ maka uto osisi nke nwere ike ịkwalite uto na mmepe ihe ọkụkụ, mee ka ihe ọkụkụ dịkwuo mma na nke siri ike, na-emeziwanye ihe mgbochi osisi na nguzogide nrụgide.

Brassinolide (BRs) bụ onye na-ahụ maka uto osisi dị irè nke a na-eji ebelata mmebi pesticide. Brassinolide (BRs) nwere ike na-enyere aka n'ụzọ dị irè ihe ọkụkụ ịmaliteghachi itolite nkịtị, na-emeziwanye ngwaahịa ọrụ ugbo ngwa ngwa ma na-amụba ihe ọkụkụ, karịsịa n'ibelata mmebi ahịhịa. Ọ nwere ike mee ka njikọ nke amino acid dị n'ime ahụ dịkwuo ngwa, mejupụta amino acids furu efu n'ihi mmebi pesticide, ma gboo mkpa nke ihe ọkụkụ, si otú ahụ na-ebelata mmebi pesticide.

Defoliant bụ onye na-ahụ maka uto nke nwere ike ịkwalite ihe ọkụkụ iji wụsa akwụkwọ n'oge mgbụsị akwụkwọ, belata oge ntolite osisi, melite arụmọrụ nke photosynthesis osisi, ma welie ihe ọkụkụ na-eguzogide nrụgide na oyi. Usoro nke defoliants na-eme ihe bụ ịhazi ọkwa nke homonụ endogenous, na-agba akwụkwọ ndụ akwụkwọ ndụ, na ịkwalite ịkwasa. Maka osisi ndị nọ na ọnọdụ okpomọkụ dị ala ruo ogologo oge, iji defoliants kwesịrị ekwesị mee ihe nwekwara ike ịkwalite uto na mmepe ha nke ọma.

Njirimara anụ ahụ na kemịkal nke forchlorfenuron (KT-30). Forchlorfenuron bụ otu n'ime ihe ndị bụ isi na ihe ọṅụṅụ aki oyibo. Ọgwụ mbụ bụ ntụ ntụ siri ike na-acha ọcha, nke a na-esighị ike n'ime mmiri, na-agbaze ngwa ngwa na ihe mgbaze organic dị ka acetone na ethanol.