master's thesis
Utjecaj roka sjetve na morfološka svojstva i kompeticijsku sposobnost usjeva facelije (Phacelia tanacetifolia Benth.)

Ines Ljepoja (2016)
University of Zagreb
Faculty of Agriculture
Department of Plant Pathology
Metadata
TitleUtjecaj roka sjetve na morfološka svojstva i kompeticijsku sposobnost usjeva facelije (Phacelia tanacetifolia Benth.)
AuthorInes Ljepoja
Mentor(s)Dubravka Dujmović Purgar (thesis advisor)
Abstract
Facelija (Phacelia tanacetifolia Benth.) je biljna vrsta koja je kod nas relativno malo istražena, a porijeklom iz Amerike, Kalifornije. Ova vrsta je u Europu stigla u 19. stoljeću prvenstveno kao ukrasna i medonosna biljka. Cilj ovog diplomskog rada bio je utvrditi morfološka svojstva facelije koja utječu na njenu kompetitivnu sposobnost u borbi protiv korova u različitim rokovima sjetve. Osim navedenih svojstava cilj je utvrditi i ostala morfološka svojstva kako bi se osigurali do sada nepoznati podaci za uzgoj i opis ove kultivirane vrste. Pokus je proveden tijekom 2015. godine na pokušalištu Maksimir, Agronomskog fakulteta u Zagrebu. Sjetva facelije obavljena je u dva proljetna roka sjetve. Na 20 nasumično odabranih biljaka facelije unutar svakog roka sjetve napravljena su mjerenja i ocjene 20 morfoloških svojstava. Vizualnom metodom praćena je posjećenost entomofaune te zabilježena prisutnost korovnih vrsta. Rezultati istraživanja pokazuju da je rok sjetve utjecao na morfološka svojstva facelije, a time i na njenu kompeticijsku sposobnost. Vrijednosti mjerenih svojstva razlikovala su se između dva roka sjetve. Biljke facelije iz ranog proljetnog roka sjetve su prosječno bile osjetno nižeg rasta i imale su manje listova i cvjetova, te posljedično manju masu od bilajka iz ranog proljetnog roka sjetve. Glavni uzroci manje razvijenosti biljaka iz ranog proljetnog roka sjetve su nepovoljni okolišni uvjeti (suvišak oborina i relativno niske temperature) te slaba priprema tla za sjetvu. U ranom proljetnom roku sjetve zabilježena je prisutnost ukupno 26 korovnih vrsta, dok je u kasnom proljetnom roku sjetve zabilježeno svega osam korovnih vrsta. U ovom istraživanju utvrđena je jača razvijenost biljaka facelije i slabija zakorovljenost usjeva u kasnom u usporedbi s ranim proljetnim rokom sjetve.
Keywordsphacelia sowing date morphological characteristic weed
Committee MembersDubravka Dujmović Purgar (committee chairperson)
Maja Šćepanović (committee member)
Klara Barić (committee member)
GranterUniversity of Zagreb
Faculty of Agriculture
Lower level organizational unitsDepartment of Plant Pathology
PlaceZagreb
StateCroatia
Scientific field, discipline, subdisciplineBIOTECHNICAL SCIENCES
Agronomy
Study programme typeuniversity
Study levelgraduate
Study programmePhytomedicine
Academic title abbreviationmag. ing. agr.
Genremaster's thesis
Language Croatian
Defense date2016-09-30
Parallel abstract (English)
Lacy phacelia (Phacelia tanacetifolia Benth.) is relatively unknown and information’s about this species in our environment are limited. This species originally from America arrived in Europe in the 19th century, primarily as decorative and honey production plant. The main aim of this study was to determine the morphological characteristics of phacelia which affecting its competitive ability at two different spring sowing dates. In addition, research was made to identify other morphological characteristics to ensure unknown data for description and growing of these cultivated species. The experiment was conducted during 2015 growing season at Maksimir experimental station, Faculty of Agriculture. Measurements of 20 morphological characters were made at 20 randomly selected plants within each sowing date. Presence of weeds in both phacelia crops was visually monitored and recorded. Sowing date influenced on morphological characteristics of phacelia in this study. Phacelia plants from early spring sowing were characterized by an lower stem height, smaller diameter of the stem, smaller number of internodes and branches per stem, smaller number of leaves per plant, smaller number of inflorescence branches per plant, fewer flowers per plant and less fruit per plant) compared to plants from late spring sowing. Reasons for smaller plants from the first sowing date probably were less favorable environmental conditions (high precipitation and low temperature) during the initial period of phacelia growth and poor physical soil conditions (compacted soil) in early compared to late sowing. Early spring phacelia sowing date resulted in 26 different weed species in crop while in late spring sowing date only six species of summer weeds were recorded. Results of this study indicate on greater plants development and less weed species in phacelia crop from late compared to early spring sowing date.
Parallel keywords (Croatian)facelija rok sjetve morfološke karakteristike korov
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:204:304176
CommitterValentina Bezek