Dinamika rasta presadnica salate i pojava štetnih organizama u jesenskom uzgoju

master's thesis

• Title (english): Growth dynamics of lettuce seedlings and appearance of harmful organisms in autumn crop
• Author: Barbara Oremuš
• Mentor: Božidar Benko (mentor)
• Committee member: Božidar Benko (predsjednik povjerenstva)
• Committee member: Edyta Đermić (član povjerenstva)
• Committee member: Maja Čačija (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Vegetable Crops); Zagreb
• Defense date and country: 2023-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Najveću važnost u uzgoju salate, koja je dobro prihvaćena na tržištu, dajemo zdravim i čvrstim presadnicama. Produktivnost biljaka i kvaliteta proizvoda ovisi o proizvodnji presadnica koja se stoga smatra najvažnijom fazom u cjelokupnom uzgoju salate. Cilj ovog rada je pratiti dinamiku rasta i razvoja presadnica tijekom jesenskog uzgoja. Uz mjerenje morfoloških svojstava presadnica važno je bilo pratiti i intezitet pojave i determinacije štetnih organizama tijekom uzgoja. Pokus je postavljen na pokušalištu Sveučilište u Zagrebu Agronomskog fakulteta u grijanom plasteniku. Koristile su se dvije sorte zelene salate: Posavka i Baby leaf Coulthard RZ, a sjetva salate provedena je u polistirenskim kontejnerima sa 160 sjetvenih mjesta. Sorta Posavka sijana je tijekom listopada, dok je sorta Baby leaf Coulthard RZ sijana tijekom studenog. Budući da rast i razvoj presadnica ovise o vremenu sjetve, zbog klimatskih čimbenika presadnice sorte Baby leaf Coulthard RZ razvijale su se sporije nego presadnice sorte Posavka koja je bila sijana ranije. Presadnice salate sorte Posavka imale su veću masu, dok su presadnice salate sorte Baby leaf Coulthard RZ imale više listova. Tijekom uzgoja nije zabilježena pojava štetnika, a tijekom prosinca i siječnja relativna vlaga zraka bila je vrlo visoka što je dovelo do pojave bolesti kao što su plamenjača i siva plijesan. Prilikom uzgoja presadnica nisu primjenjivana sredstva za zaštitu bilja.

Abstract (english)

The greatest importance in the cultivation of lettuce, which is well accepted on the market, is given to healthy and strong seedlings. The productivity of the plants and the quality of the product both depend on the production of seedlings, which is therefore considered the most important stage in the entire cultivation of lettuce. The aim of this work is to monitor the dynamics of growth and development of seedlings during autumn cultivation. In addition to measuring the morphological properties of seedlings, it was also important to monitor the intensity of occurrence and determination of harmful organisms during cultivation. The experiment was set up at the experimental site of the Zagreb Faculty of Agriculture in a heated greenhouse. Two varieties of lettuce were used: Posavka and Baby leaf Coulthard RZ, and the lettuce was sown in polystyrene containers with 160 seeding places. The Posavka variety was sown during October, while the Baby leaf Coulthard RZ variety was sown during November. Since the growth and development of the seedlings both depend on the time of sowing, due to climatic factors the seedlings of the Baby leaf Coulthard RZ variety developed more slowly than the seedlings of the Posavka variety that were sown earlier. Seedlings of Posavka variety lettuce had a larger mass, while Baby leaf Coulthard RZ lettuce seedlings had more leaves. No pests were recorded during cultivation, but during December and January the relative humidity was very high, which led to the appearance of diseases such as downy mildew and gray mold. No plant protection agents were used during the cultivation of seedlings.

• Keywords: Lactuca sativa L.; rast i razvoj presadnica; bolesti; štetnici
• Keywords (english): Lactuca sativa L.; growth and development of seedlings; diseases; pests
• Language: croatian
• URN:NBN: urn:nbn:hr:204:560753
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2023-08-22 08:40:13