Greenhouse and Field Evaluation of Two Biopesticides Against Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae)
Evaluacija dva biopesticida u suzbijanju Tetranychus urticae i Panonychus ulmi (Acari: Tetranychidae) u plasteniku i polju
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Author
Marcic, Dejan
Prijovic, Mirjana
Drobnjakovic, Tanja
Medjo, Irena
Peric, Pantelija
Milenkovic, Slobodan
Keywords
BiopesticidesSpider mites
Beauveria bassiana
Oxymatrine
Biopesticidi
grinje-paučinari
oksimatrin
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Show full item recordAbstract
The mycopesticide Naturalis (based on Beauveria bassiana strain ATCC 74040) and
botanical pesticide Kingbo (based on oxymatrine, an alkaloid from Sophora flavescens, a traditional
Chinese herb) were tested against the two-spotted spider mite (Tetranychus urticae)
on greenhouse vegetables and the European red mite (Panonychus ulmi) on apples. These
biopesticide products were applied twice at 5-day interval and concentrations of 0.1% and
0.2%, and their effectiveness was compared to abamectin-based products and the synthetic
acaricides acrinathrin and spirodiclofen, applied once at their recommended rates.
The mycopesticide Naturalis, applied at 0.1% concentration against T. urticae on cucumber,
reduced mite population density by 85-86%, achieving 91-93% efficacy. In a trial on tomato,
efficacy reached some 96%, while population density was reduced by 93%. In a field trial
on apple, Naturalis demonstrated an increasing and long-lasting effectiveness against the
summer population of P. ulmi of nearly 100%, and population reduction was achieved in
assessments 30 days after the first treatment. Naturalis applied at a double rate achieved a
somewhat better effect but only in the first trial. The botanical pesticide Kingbo, applied at
0.1% concentration, demonstrated very high control efficacy (≥98%) and population density
reduction (≥96%) of T. urticae in both trials. A high and long-lasting effectiveness of this
bioacaricide was also achieved in a trial on P. ulmi. Its concentration of 0.2% achieved similar
effect. The results in these trials indicate that applications of the mycopesticide Naturalis
and the botanical pesticide Kingbo can provide effective control of T. urticae on cucumber
and tomato grown in greenhouses, as well as P. ulmi on apple. Ispitivana je efektivnost mikopesticida Naturalis (na bazi Beauveria bassiana, soj ATCC
74040) i botaničkog pesticida Kingbo (na bazi oksimatrina, alkaloida iz biljke Sophora flavescens,
poznate u kineskoj tradicionalnoj madicini) u suzbijanju obične paučinaste grinje (Tetranychus
urticae) na povrću u plasteniku i crvene voćne grinje (Panonychus ulmi) na jabuci.
Ovi biopesticidi su primenjeni dva puta u razmaku od 5 dana, u koncentracijama 0,1%
i 0,2%, a njihova efektivnost je upoređena sa akaricidima na bazi abamektina, akrinatrina i
spirodiklofena, primenjenim jednom u preporučenim koncentracijama. Mikopesticid Naturalis,
primenjen u koncentraciji 0,1% protiv T. urticae na krastavcu, redukovao je gustinu populacije
za 85-86% i ostvario efikasnost 91-93%. U ogledu na paradajzu, efikasnost je dostigla
96%, dok je populaciona gustaina redukovana za 93%. U ogledu u zasadu jabuke,
Naturalis je pokazao rastuću i dugotrajnu efikasnost u suzbijanju letnje populacije P. ulmi: u
oceni 30 dana posle prvog tretiranja zabeleženi su gotovo 100% efikasnost i redukcija populacione
gustine. Efektivnost preparata Naturalis primenjenog u dvostruko većoj koncentraciji
bila je nešto bolja, ali samo u prvom ogledu. Botanički pesticid Kingbo je pokazao visoku
efikasnost (≥98%) i redukciju populacione gustine (≥96%) u oba ogleda sa T. urticae.
U ogledu suzbijanja P. ulmi postignuta je visoka i dugotrajna efektivnost ovog bioakaricida.
Koncentracija 0,2% ostvarila je slične efekte. Rezultati ovih ogleda pokazuju da se primenom
preparata Naturalis i Kingbo obezbeđuje efikasno suzbijanje T. urticae na krastavcu
i paradajzu u plasteniku, kao i P. ulmi na jabuci.