Effect of foliar application of glucose and fructose to reduce codling moth (Cydia pomonella [L., 1758]) damages on apple orchard | Učinek foliarnega nanosa glukoze in fruktoze za zmanjšanje škod po jabolčnem zavijaču (Cydia pomonella [L., 1758]) v nasadu jablan

Inglés. The apple is a dominant crop in Batna region and codling moth (CM) (Cydia pomonella) pressure is constantly very high. In this study, foliar application of single sugars is proposed as a novel control strategy, in an orchard located in Beni Fedhala (province of Batna-Algeria). The effect of spraying fructose (100 ppm), glucose (100 ppm), and insecticide (Deltamethrin) was tested against CM larval damages on the Royal Gala variety. This research showed that CM own four generations in this region. The spraying of glucose alone, fructose alone strongly reduced the percentage of damaged fruits with a very important value of Abbott’s efficacy. In addition, fructose and insecticide induced a significant decrease in the percentages of fallen and damaged fruits. Besides, the use of fructose, glucose and the insecticide has significantly reduced the number of diapausing larvae in corrugated cardboard banding. Foliar application of sugars is a completely innovative way in the field of plant protection. These results open new crop management methods.

Esloveno. Jablana je dominatna sadna vrsta na območju Batne in napad jabolčnega zavijača je stalno zelo velik. V raziskavi je bil uporabljen nanos posameznih sladkorjev kot novi način uravnavanja škodljivca v sadovnjakih na območju Beni Fedhala (provinca Batna-Alžirija). Preiskušeno je bilo škropljenje s fruktozo (100 ppm), glukozo (100 ppm) in insekticidom (Deltametrin) glede na poškodbe, ki so jih ličinke jabolčnega zavijača povzročile na sorti Royal Gala. Raziskava je pokazala, da ima jabolčni zavijač na tem območju štiri generacije. Škropljenje samo z glukozo ali samo s fruktozo je močno zmanjšalo delež poškodovanih plodov s pomembno vrednostjo Abbottove učunkovitosti. Dodatno je obravnava s fruktozo in insekticidom vzpodbudila značilno zmanšanje odstotka odpadlih in poškodovanih plodov. Poleg tega je uporaba fruktoze, glukoze in insekticidov značilno zmanjšala število bub v lovilnih trakovih na deblu jablan. Foliarni nanos sladkorjev je popolnoma nov pristop na področju varstva rastlin. Izsledki te raziskave odpirajo nove metode pri gojenju rastlin.