Ukusetyenziswa kwe-prohexadione calcium kwi-cotton topping ngokuyinhloko kujolise ekulawuleni ukukhula kwezityalo, ukubumba isakhiwo esifanelekileyo sesityalo, kunye nokwandisa isivuno. Indlela yokusebenza kwayo, idityaniswe neendlela zokuthambisa zemveli (i-manual okanye iikhemikhali), ilungisa ngokufanelekileyo ulwabiwo lwezondlo kwikotoni.
Iziphumo zayo ezithile zibonakaliswa kule miba ilandelayo:
1. Ukuthintela ukolulwa kwesiqu esingundoqo kunye nokukhuthaza uphuhliso lwesebe leziqhamo:
Iprohexadione calcium inqanda ukukhula okugqithisileyo kwesikhondo somqhaphu esingundoqo, ilawula ubude besityalo ngelixa ikhuthaza ukwanda kunye nokwanda kwenani lamasebe eziqhamo. Oku kukhokelela kulwakhiwo olunengqiqo ngakumbi lwezityalo, lula ukuphefumla, ukungena ukukhanya, kunye nokuvuna ngoomatshini.
2. Ukukhuthaza ukudluliselwa kwezondlo kumalungu okuzala:
Ngokuthintela amanqanaba okugqibela e-gibberellin synthesis, i-prohexadione calcium iyanciphisa ukusetyenziswa kwezondlo ngokukhula kwezityalo (ezifana nesiqu esigqithisileyo kunye nokukhula kwamagqabi), ukukhuthaza ukuhanjiswa kweemveliso ze-photosynthetic kwizitho zokuzala ezifana ne-buds kunye neebholi, ngaloo ndlela ukwandisa inani leebholi kwisityalo ngasinye kunye nesivuno.
3. Ukuphucula ukunyanzeliswa kwengcinezelo kunye nokuxhatshazwa kwezifo: I-Prohexadione calcium inokuphucula ukunyanzeliswa kwengcinezelo yezityalo zekotoni, inceda ukunciphisa uxinzelelo lwe-physiological olubangelwa ukugquma, kwaye inefuthe elithile lokulawula kwezinye izifo (ezifana neqabunga leqabunga).
4. Ubume bendalo kunye nentsalela ephantsi: Xa kuthelekiswa ne-triazole retardants yendabuko (efana ne-chlormequat chloride), i-prohexadione calcium iyancipha ngokukhawuleza kwimo engqongileyo, inesiqingatha sobomi obufutshane, kwaye ayinayo i-toxicity eshiyekileyo kwizityalo ezijikelezayo, okwenza kube lula ukulawulwa kokukhula kwezityalo.
Uphononongo lubonise ukuba ukusebenzisa i-prohexadione calcium ngezigaba ngexesha lokuhluma, intyatyambo yokuqala, ngaphambi kokunyuka, kwaye emva kwezigaba eziphezulu zekotoni kunokunyusa kakhulu ukuqokelelwa kwe-biomass kunye nesivuno. Unyango ngo-1950 g/hm² (T3) lubonise iziphumo ezigqwesileyo ngokukodwa, ukwandisa i-bud kunye ne-boll biomass ngaphezulu kwe-35% xa kuthelekiswa nolawulo, ngaphandle kokuchaphazela kakhulu ubunzima bebholi enye okanye ipesenti ye-lint, kodwa ngokuphawulekayo ukwandisa inani leebholi kwisityalo ngasinye.
