magistrsko delo
Povzetek
Koloradski hrošč je gospodarsko najpomembnejši škodljivec krompirja pri nas in v
svetu. Ličinke in odrasli osebki se prehranjujejo z listi krompirja, kar vpliva na izpad
pridelka gomoljev. Glavni način zmanjševanja škodljivosti koloradskega hrošča v
preteklosti je bil, prav tako pa je tudi danes, vezan na uporabo kemičnih sredstev za
varstvo rastlin. Zaradi pojava odpornosti na insekticide iz različnih kemijskih skupin,
je vse večja težnja po iskanju alternativnih načinov zatiranja. V raziskavi, ki je
potekala od aprila do avgusta 2022 na Laboratorijskem polju Biotehniške fakultete v
Ljubljani, smo preučevali učinkovitost petih inertnih prašiv (zeolit, kremenov pesek,
diatomejska zemlja, lesni pepel, prah listov velikega pajesena) na različne razvojne
stadije koloradskega hrošča (jajčna legla, mlajše ličinke [L1-L2], starejše ličinke [L3-
L3], odrasli osebki). V poskus smo vključili tudi negativno kontrolo, kjer varstva
krompirja nismo izvajali ter pozitivno kontrolo, kjer smo rastline škropili s pripravkom
Laser Plus (spinosad). Ocenili smo odstotek defoliacije krompirja ter pridelek
gomoljev. Rezultati so pokazali, da sta bila najbolj učinkovita pri zatiranju mlajših
ličink spinosad in lesni pepel. Starejše ličinke in odrasle osebke sta najbolje zatirala
spinosad in zeolit. Ugotovili smo, da imata lesni pepel in zeolit določene insekticidne
lastnosti, zato bi jih lahko v bodoče uporabljali kot dodatno metodo zatiranja
koloradskega hrošča.
Ključne besede
koloradski hrošč;inertna prašiva;insekticidi;alternativne metode zatiranja;zeolit;lesni pepel;kremen;rastlinski prahovi;diatomejska zemlja;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2023 |
Tipologija: |
2.09 - Magistrsko delo |
Organizacija: |
UL BF - Biotehniška fakulteta |
Založnik: |
[M. Gorišek] |
UDK: |
632.76:633.491:632.937(043.2) |
COBISS: |
164626435
|
Št. ogledov: |
59 |
Št. prenosov: |
15 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Investigation on the efficacy of inert dusts in reducing the damage caused by Colorado potato beetle (Leptinotarsa decemlineata [Say]) on potato (Solanum tuberosum L.) |
Sekundarni povzetek: |
The Colorado potato beetle is the most economically significant pest of potatoes in our
country and worldwide. Its larvae and adultbeetles feed on potato leaves, which affects
the yield of tubers. The primary method of reducing the damage caused by the
Colorado potato beetle in the past, and also today, has been the use of chemical plant
protection products. However, due to the development of resistance to insecticides
from various chemical groups, there is an increasing trend in seeking alternative
methods of control. In a study conducted from April to August 2022 at the Field
Laboratory of the Biotechnical Faculty in Ljubljana, we examined the effectiveness of
five inert powders (zeolite, silica sand, diatomaceous earth, wood ash, powdered
leaves of common tansy) on different developmental stages of the Colorado potato
beetle (egg masses, younger larvae [L1-L2], older larvae [L3-L3], adult beetles). We
also included a negative control where no potato protection measures were applied and
a positive control where the plants were sprayed with the product Laser Plus
(spinosad). We assessed the percentage of defoliation of the potato plants and the yield
of tubers. The results showed that spinosad and wood ash were most effective in
suppressing younger larvae. Spinosad and zeolite were the most effective in
controlling older larvae and adult beetles. We found that wood ash and zeolite possess
certain insecticidal properties, suggesting that they could be used as additional
methods for the control of the Colorado potato beetle in the future. |
Sekundarne ključne besede: |
Colorado potato beetle;inert dusts;insecticides;alternative approaches of plant protection;zeolite;wood ash;quartz;plant based dusts;diatomaceous earth; |
Vrsta dela (COBISS): |
Magistrsko delo/naloga |
Študijski program: |
0 |
Komentar na gradivo: |
Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo |
Strani: |
1 spletni vir (1 datoteka PDF (VIII, 36 str.)) |
ID: |
19933637 |