20.500.12556/DKUM-10563 UČINEK ETEFONA, NAA, NAD, BA IN NJIHOVIH KOMBINACIJ NA REDČENJE JABLANE (Malus domesica Borkh.) SORTE ‘Fuji’ THE EFFECT OF ETHEPHON, NAA, BA AND THEIR COMBINATIONS ON THINING INTENSITY OF 'Fuji' APPLES (Malus domesica Borkh.) V letih 2004 in 2005 je na posestvu UKC Pohorski dvor potekal poizkus kemičnega redčenja jablane Malus domestica Borkh. 'Fuji'. Ugotavljali smo, kako različni pripravki vplivajo na redčenje, debelino plodov, količino pridelka in barvo plodov. Ocenjevali smo tudi pojav majhnih plodov in povratno cvetenje. V času opravljanju poizkusa nismo imeli težav z vremenom, tako da so vsa tretiranja potekala v lepem in sončnem vremenu, zato o kakšnih posebnih vplivih vremena ne moramo govoriti. ‘Fuji’ je poznan po tem, da se težko redči, kar lahko sklepamo tudi iz našega poizkusa. Večina pripravkov v tem poizkusu ni zredčila plodov, med te sodijo NAD 100 ppm, NAA 15 ppm in BA 150 ppm + NAA 15 ppm. Pri uporabi BA 150 ppm je bilo opaženo rahlo redčenje, kar pripisujemo nepojasnjenim vplivom. Pri vseh navedenih tretiranjih pa je prišlo do pojava majhnih plodov oziroma pigmejskih plodov (<45 mm). Največje število teh plodov se je pojavilo pri tretiranju z BA 150 ppm + NAA 15 ppm. Edini pripravek, ki je signifikantno zredčil plodove je bil ethephon 400 ppm, vendar pa se je pri ethephonu pokazalo, da je prišlo do preredčenja in smo tako dobili manjše število plodov komercialnega razreda. Tako se je še enkrat pokazalo, da je sorta ‘Fuji’ resnično zahtevna sorta za redčenje in da večina pripravkov na ‘Fujiju’ povzroči pojav majhnih plodov (<45 mm). In 2004 and 2005 at the UKC Pohorski dvor the thinning response was studied on Malus domestica Borkh. 'Fuji'. We were evaluating how the thinning effect of different thinners and how do they effect on bigger sized fruits, amount harvest and colour of fruits. We were also evaluating the appearance of small fruits and return blooming. In the time of the experiment, there were no extra difficulties with weather, so all treatments were done in sunny weather. 'Fuji' apples are known to be hard to thinn, that can also be seen in our experiment. NAD 100 ppm, NAA 15 ppm in BA 150 ppm + NAA 15 ppm haven't significant thinned. In treatment with BA 150 ppm the thinning was slightly better. We are assigning that to an unknown parameter. In all those treatments small fruits or pigmy fruits had appeared (<45 mm). At strongest they appeared in treatment with BA 150 ppm + NAA 15 ppm. The only thinner that significantly reduced the amount of fruits was etephon at 400 ppm, but those trees were ower thined, so the amount of comercial fruits was reduced. So our experiment had once more shown that 'Fuji' apples are really hard to thin and that almost all thinners cause the appearance of pigmy fruits. etephon NAD BA NAA 'Fuji' kemično redčenje pigmejski plodovi etephon NAD BA NAA 'Fuji' chemical thinning pigmy fruits true true false Slovenski jezik Angleški jezik Diplomsko delo 2009-05-22 18:59:21 2009-06-04 11:48:50 2022-04-11 16:22:47 2022-04-16 03:32:30 2009 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:AMFX2K98 UNI_Vrhovnik_Gregor_2009.pdf UNI_Vrhovnik_Gregor_2009.pdf 1 0A7787B94AC6AC3EFAF756AAFA8C779A b1cba4ef5767f258eb4f10360b450f5388531d8cfe81dba9aa8d9c74643e4bb1 dccf0c51-7c02-11eb-bb7a-00155d0001ca 20.500.12556/dkum/89fd9aa4-8372-479a-bad4-b1c6b341b934 https://dk.um.si/Dokument.php?lang=slv&id=8725 Fakulteta za kmetijstvo in biosistemske vede 0 0 0