diplomsko delo
Kris Pirih (Avtor), Metka Hudina (Mentor), Danilo Bevk (Komentor)

Povzetek

Čeprav je žlahtni jagodnjak (Fragaria x ananasa Duch.) samooprašna rastlina, je za doseganje velikih in kakovostnih pridelkov pomembna prisotnost opraševalcev. Poskus smo izvedli leta 2019 na laboratorijskem polju Biotehniške fakultete. Zanimala nas je dejavnost opraševalcev na cvetovih žlahtnega jagodnjaka in razlike v pomoloških lastnostih plodov pri različnih sistemih prekrivanja. Rastline sorte 'Clery' so bile posajene na grebenu v dvovrstnem sistemu, prekritem s črno folijo, pod katero je bila namakalna cev. Del grebena je bil prekrit s protitočno mrežo na visokih lokih (visoki tunel), drugi del je bil pokrit čez nizke loke (nizki tunel), tretji pa je bil odkrit (kontrola). V poskus smo vključili 10 jagodnjakov za vsako obravnavanje. Plodove smo obirali postopoma in beležili njihovo število, razvitost in maso pridelka za vsako vzorčno rastlino. Trikrat smo opravili tudi meritve pomoloških lastnosti (višina, širina, debelina, masa, trdota ploda in delež topne suhe snovi). Rezultati so pokazali, da so bili plodovi v nizkem tunelu lažji za 6 % in 16 % v visokem v primerjavi s kontrolo. Kontrolne rastline so imele 11,7 % deformiranih plodov, medtem ko je bilo v nizkem tunelu 17,1 % in v visokem 20,7 % takšnih plodov. Obratno sorazmerno z večanjem deleža deformiranih plodov se je njihova višina, širina in debelina zmanjševala. Med cvetenjem se je štirikrat spremljalo tudi prisotnost opraševalcev. Ob slabšem in hladnejšem vremenu so na cvetovih prevladovale samotarske čebele in muhe trepetavke. Na topel in jasen dan pa so bile najbolj številčne medonosne čebele.

Ključne besede

sadjarstvo;jagodnjak;Fragaria x ananassa;opraševanje;opraševalci;medonosna čebela;čmrlji;čebele samotarke;pridelek;kakovost;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL BF - Biotehniška fakulteta
Založnik: [K. Pirih]
UDK: 634.75:631.527.82:581.162.3:638.19:631.599(043.2)
COBISS: 76095747 Povezava se bo odprla v novem oknu
Št. ogledov: 290
Št. prenosov: 37
Ocena: 0 (0 glasov)
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Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Pollinators and fruit quality of strawberry (Fragaria x ananassa Duch.) cultivar 'Clery' in different covering systems
Sekundarni povzetek: Although the strawberry (Fragaria x ananasa Duch.) is a self-pollinating plant, presence of pollinators is important to achieve the best yields. The experiment was performed in 2019 on the laboratory field of the Biotechnical Faculty. Activity of pollinators on strawberry flowers and differences in the pomological properties of fruits in different covering systems were investigated. Cultivar ‘Clery’ plants were planted on a ridge in a two-row system covered with black foil, under which was an irrigation pipe. Part of the ridge was covered with an anti-hail net on high arches (high tunnel), another part was covered over low arches (low tunnel), and a third was not covered (control). We included 10 strawberry plants for each treatment. The fruits were harvested gradually, and their number, development and yield weight were recorded for each sample plant. We also performed measurements of pomological properties three times (height, width, thickness, weight, firmness and total soluble solids). The results showed that fruit in the low tunnel were 6% lighter and 16% lighter in the high tunnel compared to the control. Control plants had 11.7% of deformed fruit, while in the low tunnel there were 17.1% and in the high 20.7% of such fruit. Inversely proportional to the increase in share of deformed fruit, their height, width and thickness decreased. The presence of pollinators was also monitored four times during flowering. In bad and colder weather, solitary bees and hover flies predominated on flowers. On a warm and clear day, however, honeybees were most numerous.
Sekundarne ključne besede: fruit farming;strawberry;pollination;pollinators;honey bee;bumblebees;solitary bees;yield;quality;
Vrsta dela (COBISS): Diplomsko delo/naloga
Študijski program: 0
Komentar na gradivo: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Strani: VIII, 45 f.
ID: 13386270