Obvladovanje hmeljevega bolhača (Psylliodes attenuatus Koch) na hmelju (Humulus lupulus L.) : diplomsko delo

Cizej, Mitja

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Title:	Obvladovanje hmeljevega bolhača (Psylliodes attenuatus Koch) na hmelju (Humulus lupulus L.) : diplomsko delo
Authors:	ID Cizej, Mitja (Author) ID Paušič, Andrej (Mentor) More about this mentor... ID Lešnik, Mario (Comentor)
Files:	VS_Cizej_Mitja_2022.pdf (3,34 MB) MD5: 5DAFA3646A18387CD82215BCA85DE647
Language:	Slovenian
Work type:	Bachelor thesis/paper
Typology:	2.11 - Undergraduate Thesis
Organization:	FKBV - Faculty of Agriculture and Life Sciences
Abstract:	Hmeljev bolhač (Psylliodes attenuatus Koch) je pomemben škodljivec hmelja (Humulus lupulus L.), ki se prehranjuje tudi z navadno konopljo (Cannabis sativa L.) in veliko koprivo (Urtica dioica L.). Ima eno generacijo letno z dvema pojavoma in sicer spomladi v času intenzivne rasti hmelja in poleti v času oblikovanja storžkov. Ko hmeljev bolhač preseže prag gospodarske škode, uporabimo insekticide. Na hmelju ima trenutno registracijo aktivna snov (a. s.) lambda-cihalotrin in ciantraniliprol. A. s. lambda-cihalotrin bo v Evropski Uniji kmalu prepovedana, zato smo v raziskavi preučevali možnost obvladovanja hmeljevega bolhača v spomladanskem času z alternativnimi metodami z nizkim tveganjem, kot so biostimulanti, regulatorji rasti, gnojila, repelenti. Nekateri pripravki uporabljeni v raziskavi naj bi imeli stimulativen učinek na rast in razvoj hmelja, ki pa niso dali želenih učinkov v smislu hitre rasti in posledično zmanjšani pojavnosti poškodb od hmeljevega bolhača. Število hmeljevih bolhačev na rastlini ni merodajno glede ugotavljanja učinkovitosti pripravkov, saj so bolhači zelo mobilni. Najmanj bolhačev smo zasledili na parcelah, kjer smo uporabili insekticid Karate Zeon 5 CS (a. s. lambda-cihalotrin) in Exirel (a. s. ciantraniliprol), med alternativnimi pripravki pa na parcelah, kjer smo večkrat uporabili pripravek Algo-Plasmin. Poškodbe na listih hmelja so bile statistično značilno manjše, kjer smo uporabili kontaktna insekticida Karate Zeon 5 CS in Exirel. Med alternativnimi pripravki so bile manjše poškodbe na listih hmelja, kjer smo uporabili Algo-Plasmin, CutiSan in Invelope. Z raziskavo smo ugotovili, da lahko z nekaterimi alternativnimi pripravki delno omejimo poškodbe od hmeljevega bolhača na hmelju v spomladanskem času, kar pa ni primerljivo z uporabo kontaktnih insekticidov.
Keywords:	hmelj, Humulus lupulus, hmeljev bolhač, Psylliodes attenuatus, alternativni pripravki, učinkovitost
Place of publishing:	Maribor
Place of performance:	Maribor
Publisher:	[M. Cizej]
Year of publishing:	2022
Number of pages:	XII, 47 f., [1] f. pril.
PID:	20.500.12556/DKUM-83039
UDC:	633.791:632.937(043.2)=163.6
COBISS.SI-ID:	123213059
Publication date in DKUM:	28.09.2022
Views:	577
Downloads:	87
Metadata:
Categories:	FKBV
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Licences

License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	14.09.2022

Secondary language

Language:	English
Title:	Control of Hop Flea Beetle (Psylliodes attenuatus Koch) on Hops (Humulus lupulus L.)
Abstract:	The hop flea beetle (Psylliodes attenuatus Koch) is the most common pest on hops (Humulus lupulus L.), which also feeds on hemp (Cannabis sativa L.) and stinging nettle (Urtica dioica L.). It has one generation per year with two occurrences, one in springtime when the hop plants growth intensely, and the other in the summertime when the plants formulate cones. When the hop flea beetle exceeds the economic threshold it is recommended to use insecticides. Active ingredient (a. i.) lambda-cyhalothrin and cyantraniliprole are currently registered pesticides for hops. Because a. i. lambda-cyhalothrin will soon be prohibited in the European Union, the thesis focuses on the possibility of managing the hop flea beetle with low-risk methods such as biostimulants, growth regulators, fertilizers and repellents in spring. Some of the products, used in the research are stimulators for the growth and development of hops, but they have no effects on reducing the damage caused by the hop flea beetle. Counting the number of hop flea beetles is not a good method for determining the effectiveness of preparations, simply because flea beetles are very mobile. The lowest numbers of hop flea beetles were found on the plots where the insecticides Karate Zeon 5 CS (a. s. lambda-cyhalothrin), Exirel (a. s. cyantraniliprole), and alternative preparation Algo-Plasmin (several times used) were used. The damage on hop leaves from the hop flea beetles was statistically significantly lower where the contact insecticides Karate Zeon 5 CS and Exirel were used. Among the alternative preparations, there were minor damages on the hop leaves from the hop flea beetle where we used Algo-Plasmin, CutiSan and Envelope. This research indicates that some alternative preparations can partially limit the damage caused by hop flea beetles in springtime, but that is not comparable to the use of contact insecticides.
Keywords:	hops, Humulus lupulus, hop flea beetle, Psylliodes attenuatus, alternative products, efficacy

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