13 research outputs found
A szĹ‘lĹ‘ tĹ‘kebetegsĂ©geinek vizsgálata Ă©s a kĂłrokozĂłk izolálása a Debreceni Egyetem Pallagi KertĂ©szeti KĂsĂ©rleti TelepĂ©nek szĹ‘lĹ‘ fajtagyűjtemĂ©nyĂ©ben
A dolgozat cĂ©lja a Debreceni Egyetem Pallagi KĂsĂ©rleti TelepĂ©nek szĹ‘lĹ‘ fajtagyűjtemĂ©nyĂ©nek felmĂ©rĂ©se a tĹ‘kebetegsĂ©gek szempontjábĂłl. Megvizsgáltuk a betegsĂ©g sĂşlyosbodásához vezetĹ‘ környezeti tĂ©nyezĹ‘ket, megfigyeltĂĽk a betegsĂ©g terjedĂ©sĂ©t az ĂĽltetvĂ©nyben, valamint izoláltuk a szĹ‘lĹ‘tĹ‘kĂ©kben Ă©lĹ‘ endofiton gombákat.MSc/MANövĂ©nyorvos
AlternatĂv termĂ©snövelĹ‘ anyagok hatásainak vizsgálata vöröshagyma kultĂşrában
A dolgozat tĂ©mája egyes alternatĂv termĂ©snövelĹ‘ anyagok, biostimulátorok tesztje tenyĂ©szedĂ©nyes vöröshagyma kultĂşrában.EredmĂ©nyeink: A kiprĂłbált anyagok az Organic Green Gold Ă©lĹ‘alga-kĂ©szĂtmĂ©ny, az Organic Activator Plus magas aminosavtartalmĂş növĂ©nyi kivonat Ă©s az Organic Agro Guard citruskivonat voltak. A kĂsĂ©rletet a DE AGTC AgrokĂ©mia Ă©s Talajtani IntĂ©zetĂ©nek tenyĂ©szedĂ©nyházában vĂ©geztĂĽk. A szereket levĂ©ltrágyakĂ©nt juttattuk ki.Az OGG a vöröshagyma termĂ©smutatĂłit csak tendenciájukban növelte. Az OAP statisztikailag igazolhatĂł mĂ©rtĂ©kben növelte a levĂ©lzet tömegĂ©t. ErrĹ‘l a szerrĹ‘l feltĂ©telezhetĹ‘, hogy alkalmas termĹ‘egyensĂşlyt vegetatĂv irányba vinni. Az OAG kezelĂ©s a gyártĂł által ajánlott koncentráciĂłban perzselt, kijuttatását hĂgabb oldatban javasoljuk.BSc/BAMezĹ‘gazdasági mĂ©rnök
The Biocontrol Potential of Endophytic Trichoderma Fungi Isolated from Hungarian Grapevines. Part I. Isolation, Identification and In Vitro Studies
This paper reports on the identification and in vitro characterization of several Trichoderma strains isolated from the Tokaj Wine Region in North-East Hungary. Ten isolates were analyzed and found to consist of six individual species—T. gamsii, T. orientale, T. simmonsii, T. afroharzianum, T. atrobrunneum and T. harzianum sensu stricto. The growth potential of the strains was assessed at a range of temperatures. We also report here on the in vitro biocontrol properties and fungicide tolerance of the most promising strains
The Biocontrol Potential of Endophytic <i>Trichoderma</i> Fungi Isolated from Hungarian Grapevines, Part II, Grapevine Stimulation
In the first part of this two-piece publication, the isolation, identification and in vitro characterization of ten endophytic Trichoderma isolates were reported. Here we report the ability of two different mixes of some of these isolates (Trichoderma simmonsii, Trichoderma orientale and Trichoderma gamsii as well as of Trichoderma afroharzianum and T. simmonsii) to colonize and stimulate the growth of grapevines. Two commercial vineyards about 400 km away from the site of isolation were used as experimental fields, from which the strains of three Trichoderma species were re-isolated up to four years after rootstock soaking treatment with conidiospores, performed before planting. The treatments decreased the overall percentage of lost plants of about 30%, although a low number of lost plants (about 5%) were observed also in the control plot. For all cultivars and clones, the Trichoderma treatments significantly increased both the bud burst ratio and bud burst vigor index. In addition, the grape must parameters such as the Brix degrees, as well as the extract, the D-glucose and the D-fructose concentrations all appeared to be improved, suggesting a potentially higher ethanol content of the produced wine. We conclude that grapevine-endophytic Trichoderma isolates promote plant growth, which could be a useful feature for sustainable agriculture in general and integrated plant production in particular