Ukusetyenziswa kwe-2-4d yokulawula ukukhula kwezityalo:

1. Itumato: Ukususela kusuku olu-1 ngaphambi kokudubula kweentyantyambo ukuya kwiintsuku eziyi-1-2 emva kokutyatyamba, sebenzisa isisombululo se-5-10mg/L 2,4-D ukutshiza, ukufaka okanye ukucwina iintyatyambo zeentyatyambo ukukhusela ukuwa kweentyatyambo kunye neziqhamo.

I-Gibberellic Acid GA3 yihomoni yesityalo. Xa kuziwa kumahomoni, abantu abaninzi bacinga ukuba kuya kuba yingozi kumzimba womntu. Enyanisweni, i-Gibberellic Acid GA3, njenge-hormone yesityalo, ayinabungozi kumzimba womntu.

I-Gibberellic Acid GA3 yihomoni ebalulekileyo yokukhula kwezityalo enokukhuthaza ukuntshula kwembewu. I-Gibberellic Acid GA3 kufunyaniswe ukuba ivuselela ezinye iigenes kwimbewu, yenza ukuba imbewu intshule lula phantsi kobushushu obufanelekileyo, ukufuma kunye neemeko zokukhanya. Ukongeza, i-Gibberellic Acid GA3 inokuxhathisa ubunzima ukuya kumlinganiselo othile kwaye inyuse izinga lokusinda kwembewu.

Zininzi iindidi zezichumiso zamagqabi. Ngokweempembelelo kunye nemisebenzi yazo, izichumisi zamagqabi zinokushwankathelwa zibe ziindidi ezine: isondlo, ulawulo, ibhayoloji kunye nekhompawundi.