Obuolinio pjūklelio (Hoplocampa testudinea Klug) populiacijos tankis ir žalingumas soduose Lietuvoje, įvairių veislių obelis auginant pagal dvi ūkininkavimo sistemas

Tamošiūnas, Rimantas; Valiuškaitė, Alma; Survilienė, E.; Duchovskienė, L.; Rasiukevičiūtė, Neringa

doi:10.13080/z-a.2014.101.027

Cited by 4 publications

(6 citation statements)

References 11 publications

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“…In the case of our study, a preference towards certain apple cultivars could also play a role in spatial distribution patterns. As was demonstrated in the study by Tamošiūnas et al (2014), certain cultivars suffered more severe infestation levels in comparison to others; however, no significant differences in sawfly numbers between cultivars were detected. Higher reproduction success or better survivability in certain cultivars may influence increase of population density and consequently, taking into account limited flying traits of apple sawfly species, aggregation around these spots.…”

Section: (2015) 77supporting

confidence: 56%

“…On the other hand, in conventional orchard, where sticky traps were deployed along rows of different cultivars, no clear distribution pattern, indicating a clear preference towards cultivars could be distinguished. A rootstock -cultivar combination also seemed to have no influence either on density or on infestation (Tamošiūnas et al, 2014). These results indicate more accidental nature of apple sawfly distribution in orchard territory than clearly influenced by certain apple phenotype.…”

Section: (2015) 77mentioning

confidence: 75%

“…Several tools for predicting the spring emergence of adult sawflies (Graf et al, 1996 a; Zijp, apple orchards Blommers, 1997;Tamošiūnas, Valiuškaitė, 2013), life span and egg-laying time (Graf et al, 2001), embryonic development duration and egg-hatch (Ciglar, Barić, 2002;Graf et al, 2002;Falta, Kneifl, 2006) were developed. White sticky traps were investigated and proposed as a valuable and reliable tool for monitoring apple sawfly population dynamics and infestation prognosis (Wildbolz, Staub, 1984;Galli et al, 1993;Graf et al, 1996 b), economic damage threshold was determined under western Germany, Swiss and Lithuanian conditions (Wildbolz, Staub, 1984;Graf et al, 1996 b;Tamošiūnas et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

Tamošiūnas

Valiuškaitė

Jukna

et al. 2015

Zemdirbyste-Agriculture

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An investigation on spatial distribution of apple sawfly (Hoplocampa testudinea Klug, 1816) populations was conducted in organically and conventionally managed apple orchards of Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in 2010-2013. The aim of this study was to examine population density patterns of within orchard spatial distribution of apple sawfly. White sticky traps Rebell ® bianco (Andermatt Biocontrol, Switzerland) were used to monitor apple sawfly population density. In order to determine aggregation extent in sawfly populations, coefficient k of the negative binomial distribution, serving as aggregation index, was computed using maximum-likelihood method. Additionally, in order to accurately evaluate distribution patterns of apple sawfly within orchards, spatial analysis using Kernel density function was performed. Spatial analysis was performed using program package ARCGIS 10. Results of the study on spatial distribution patterns of apple sawfly imagoes demonstrated strong tendency for aggregation of adult sawflies across the orchard area. Localisation of clumps was quite constant despite the size of the orchard. Such knowledge could be applied for optimization of apple sawfly control strategies, especially in large orchards. The highest infestation levels were recorded exactly in the aggregations of sawflies over the course of the study. Moreover, knowing exact locations of such aggregations could be useful for optimization of positioning of traps in the orchards and, ultimately, restricting insecticide applications only to places where it is really necessary.

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Section: (2015) 77supporting

confidence: 56%

Section: (2015) 77mentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

Tamošiūnas

Valiuškaitė

Jukna

et al. 2015

Zemdirbyste-Agriculture

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“…Some studies indicated highly variable damage levels by secondary apple pests like apple sawfly (Tamosiunas et al, 2013;Tamošiūnas et al, 2014;2015) or green apple aphids (Raudonis et al, 2010) on different apple cultivars in the same orchard, pests were successfully controlled in our experiment by sustainable plant protection system. The activity of apple codling moth adults was determined during all seasons of our investigations (Table 3).…”

Section: Resultsmentioning

confidence: 64%

“…mancozeb (2.0) -pheromone traps for insects pheromone traps for insects pheromone traps for insects measure based on a mean number of insects captured per trap during a particular time interval (Tamosiunas et al, 2013;Tamošiūnas et al, 2014). Insecticides were applied when the density of pests was reaching the threshold of harmfulness.…”

Section: Methodsmentioning

confidence: 99%

The effect of sustainable plant protection and apple tree management on fruit quality and yield

Valiuškaitė

Uselis

Kviklys

et al. 2017

Zemdirbyste-Agriculture

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Recently, relatively large amounts of pesticides have been used to control diseases and pests in modern apple production. Our investigations were aimed to estimate the effects of sustainable plant protection system and integrated apple-growing technology on apple fruit quality. The research was carried out in 2011-2013 with apple cultivars 'Auksis', 'Alva', 'Connell Red', 'Ligol', 'Lodel', 'Rubin' and 'Šampion'. Sustainable plant protection system based on the internet supported forecasting system iMETOS®sm. According to the rules of the sustainable plant protection system, plant protection products with the same active ingredients were used not more than twice, and preharvest interval was 1.5 times longer than indicated on the product label. Plant protection products labelled as "very toxic" and "toxic" were not used. Scab susceptible cultivars 'Alva' and 'Ligol' on average were sprayed twelve times when other cultivars -nine times. Sustainable plant protection system did not guarantee total scab control; therefore, damaged fruits should be thinned manually. High-quality fruit yield was on average 39 t ha -1 , but the yield of 'Šampion' and 'Ligol' reached 51-56 t ha -1 . The 59% of all investigated cultivars fruits were 70-80 mm in diameter, and 30% of fruits -more than 85 mm. All tested cultivars had averaged low index of biennial bearing 0.11-0.34.

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The Efficiency of Biological Control Treatments of Codling Moth (Cydia Pomonella L.) on Three Different Apple Varieties

Tomaš¹,

Šimić²,

Mihaljević³

et al. 2018

Appl. Ecol. Env. Res.

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Abstract. Codling moth (Cydia pomonella L.) is one of the most important apple pests which population is steadily growing. The aim of this study, conducted in Eastern Croatia, was to determine the efficiency of two biological preparations CpGV and kaolin clay compared with pyrethroids and control treatment. The preparations used in treatments were: 1) Cydia pomonella granulovirus (CpGV), 2) deltamethrin, beta cyfluthrin and alpha-cipemetrina, 3) kaolin, 4) control treatment, applying in two different methods of time control, on the three apple varieties 'Melrose', 'Jonagored' and 'Golden Delicious' clone B. The efficiency of the treatment 1 (CpGV) ranged from 78% to 95%, of treatment 2 (pyrethroids) from 96% to 97%, and treatment 3 (kaolin) -between 21.5 and 57%. There was significant negative correlation between yield and damage (r = −07.56). Two methods of determining time control did not differ significantly. Variety 'Melrose' had the highest number of fruits damage in all three years and 'Golden Delicious' clon B the lowest number which can be related to the codling moth caterpillar affinity to a certain variety. It is very important to make the best choice of preparations in control and at the same time be sure of their positive effect on the environment and human health.

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Obuolinio pjūklelio (Hoplocampa testudinea Klug) populiacijos tankis ir žalingumas soduose Lietuvoje, įvairių veislių obelis auginant pagal dvi ūkininkavimo sistemas

Abstract: An investigation of apple sawfly (Hoplocampa testudinea Klug 1816) (Hymenoptera: Symphyta: Tenthredinidae) populations was conducted in conventionally and organically managed apple orchards

Cited by 4 publications

References 11 publications

Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

The effect of sustainable plant protection and apple tree management on fruit quality and yield

The Efficiency of Biological Control Treatments of Codling Moth (Cydia Pomonella L.) on Three Different Apple Varieties

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