Ukusetshenziswa kwe-prohexadione calcium ku-cotton topping ngokuyinhloko kuhloswe ukulawula ukukhula kwezitshalo, ukwakha isakhiwo esihle sesitshalo, nokwandisa isivuno. Indlela yayo yokusebenza, ehlanganiswe nezindlela zokwejwayelekile zokwengeza (i-manual noma amakhemikhali), ithuthukisa ngempumelelo ukwabiwa kwezakhi ukotini.
Imiphumela yayo ethile ibonakala kulezi zici ezilandelayo:
1. Ukuvimbela ukunwetshwa kwesiqu esikhulu nokukhuthaza ukuthuthukiswa kwegatsha lezithelo:
I-Prohexadione calcium ivimbela ukukhula ngokweqile kwesiqu sikakotini esiyinhloko, ilawula ukuphakama kwesitshalo kuyilapho ikhuthaza ukunwetshwa kanye nokwanda kwenani lamagatsha ezithelo. Lokhu kuphumela ekwakhiweni kwesitshalo okunengqondo kakhudlwana, okwenza kube lula ukungena komoya, ukungena kancane, nokuvuna ngemishini.
2. Ukukhuthaza ukudluliswa kwezakhi ezithweni zokuzala:
Ngokuvimbela izigaba zakamuva ze-gibberellin synthesis, i-prohexadione calcium inciphisa ukusetshenziswa kwezakhi ngokukhula kwemifino (njengokukhula ngokweqile kwesiqu nokukhula kweqabunga), ikhuthaze ukudluliswa kwemikhiqizo ye-photosynthetic ezithweni zokuzala ezifana nama-buds nama-bolls, ngaleyo ndlela ikhulise inani lamabholi ngesitshalo ngasinye kanye nesivuno.
3. Ukuthuthukisa ukumelana nokucindezeleka kanye nokumelana nezifo: I-Prohexadione calcium ingathuthukisa ukumelana nokucindezeleka kwezitshalo zikakotini, isize ekudambiseni ukucindezeleka ngokomzimba okubangelwa ukunqwabelana, futhi inomphumela othile wokulawula kwezinye izifo (njengebala leqabunga).
4. Izinsalela ezinobungani bemvelo neziphansi: Uma kuqhathaniswa nama-triazole retardants (njenge-chlormequat chloride), i-prohexadione calcium yonakala ngokushesha endaweni ezungezile, inohhafu wempilo emfushane, futhi ayinabo ubuthi obusalela ezitshalweni ezijikelezayo, okuyenza ibe isilawuli sokukhula kwezitshalo esivumelana nemvelo.
Ucwaningo luye lwabonisa ukuthi ukusebenzisa i-prohexadione calcium ngezigaba ngesikhathi sokuhluma, ukuqhakaza kokuqala, ngaphambi kokugcwalisa, nangemva kwezigaba zokugqoka ukotini kungakhuphula kakhulu ukuqoqwa kwe-biomass kanye nesivuno. Ukwelashwa nge-1950 g/hm² (T3) kubonise imiphumela evelele ngokukhethekile, ukukhulisa i-bud ne-boll biomass ngaphezu kuka-35% uma kuqhathaniswa nokulawula, ngaphandle kokuthikameze kakhulu isisindo sebholi eyodwa noma iphesenti le-lint, kodwa kukhuphule ngokuphawulekayo inani lamabholi ngesitshalo ngasinye.
