#agriculture #farming #lateblight #potatocrops #tomatocrops #plantdefensemechanisms #beta-caryophyllene #cropprotection #naturalcompounds #pestcontrol
Ukubola okuphuzile kubangelwa ukhunta iPhytophthora infestans, engasakazeka ngokushesha futhi ibulale izitshalo zonke. Ngokwemininingwane yakamuva, lesi sifo sidla abalimi emhlabeni wonke izigidigidi zamaRandi ngokulahleka unyaka ngamunye. Kodwa ososayensi manje sebethole indlela entsha emangalisayo yokulwa nokulimaza sekwephuzile: ngokusebenzisa inhlanganisela eyenzeka ngokwemvelo etholakala emaqabunga ezinye izitshalo.
Inhlanganisela, ebizwa nge-compound beta-caryophyllene (BCP), itholwe yenza kusebenze izindlela zokuzivikela zemvelo zesitshalo ngokumelene nesifo. Uma sivezwa ku-BCP, lesi sitshalo sikhiqiza amazinga aphezulu ezinto ezivikelayo ezingasiza ukulwa nesikhunta. Lokhu kutholwa kungase kube nomthelela omkhulu kubalimi, njengoba kunikeza indlela entsha yokuvikela izitshalo zabo ngaphandle kokuthembela ekwelashweni kwamakhemikhali okumba eqolo futhi okungaba yingozi.
Nakuba ucwaningo lusezigabeni zalo zokuqala, kunesizathu sokuba nethemba mayelana nezinzuzo ezingaba khona zalokhu kutholwa. Ngokungeziwe emandleni ayo okuvikela izitshalo zamazambane kanye notamatisi ekubhujisweni sekwephuzile, i-BCP ingase futhi isebenze kwezinye izindawo zezolimo, njengokuvikela ezinye izitshalo ezinambuzaneni nasezifweni.
Ukutholakala kwezinzuzo ezingaba khona ze-BCP zokuvikela izitshalo zamazambane kanye notamatisi ekubhubhiseni sekwephuzile kuyintuthuko ethokozisayo kwezolimo. Nakuba ucwaningo olwengeziwe ludingeka ukuze kuqondwe ngokugcwele ukusebenza kwayo kanye nezicelo ezingase zibe khona, lokhu kutholwa kunikeza ithuluzi elisha elithembisayo kubalimi ukuze bavikele izitshalo zabo futhi banciphise ukuthembela kwabo ekwelashweni kwamakhemikhali.