scholarly journals Effectiveness of biological protection of cabbage against pests in the conditions of the Primorsky Territory

2021 ◽  
Vol 51 (5) ◽  
pp. 51-57
Author(s):  
A. S. Pronyushkina ◽  
T. K. Kovalenko ◽  
E. N. Lastushkina
Keyword(s):  
Field Experiments ◽  
High Efficiency ◽  
Pieris Rapae ◽  
Diamondback Moth ◽  
Pieris Brassicae ◽  
Mamestra Brassicae ◽  
Biological Products ◽  
Biological Protection ◽  
Cabbage Pests ◽  
Cabbage Moth

The results of the use of entomophages and biological products to regulate the number of cabbage pests (cabbage moth Mamestra brassicae L., cabbage butterfly Pieris brassicae L., turnip butterfly Pieris rapae L., diamondback moth Plutella xylostella L.) are presented. The study was carried out in the Primorsky Territory in 2018-2020. The efficiency of Trichogramma ussuricum Sorokina applications was assessed on cabbage varieties. The effectiveness of the entomophage against the cabbage moth varied from 33.3 to 66.6%, against the turnip butterfly - from 32.6 to 70.2%. In field experiments the effectiveness of biological products Fitoverm EC (0.09 l/ha), Akarin EC (1.6 l/ha), Proclaim WG (0.3 kg/ha), Bitoxibacillin (10 l/ha), Bitoxibacillin P (2 kg/ha), Lepidocid SC (2 l/ha), Lepidocid P (2 kg/ha) against diamondback moth are studied. Cabbage plants were sprayed with the preparations once. Pest counts were carried out before treatment and after treatment on the 5th, 10th and 15th day in accordance with the approved methods. Bioinsecticide Proclaim showed a high efficiency of 93.0-100% on the 5-10th day. The effectiveness of preparations based on aversectin C and avertin N was 65.0-88.6%. Using the biological product Bitoxibacillin and Lepidocid a decrease the number of diamondback moth relative to the control by 61.2-97.5 и 65.0-78.0% was registered.

scholarly journals Susceptibility of different species of lepidoptera insects to strain Bacillus thuringiensis ssp. aizawai

2020 ◽  
Vol 49 (6) ◽  
pp. 44-52
Author(s):  
I. V. Andreeva ◽  
E. I. Shatalova ◽  
G V. Kalmykova ◽  
N. I. Akulova ◽  
E. G. Ulyanova
Keyword(s):  
Bacillus Thuringiensis ◽  
Diamondback Moth ◽  
Pieris Brassicae ◽  
Individual Characteristics ◽  
Mamestra Brassicae ◽  
Resistant Species ◽  
Greater Wax Moth ◽  
Cabbage Moth ◽  
Thuringiensis Strain ◽  
Wax Moth

The results of assessing the effect of Bacillus thuringiensis ssp. aizawai strain on fi ve species of lepidopteran pests (Lepidoptera) belonging to different families are presented. The mortality of larvae infected with B. thuringiensis strain varied signifi cantly depending on the species of insect. In four species: the cabbage white butterfl y (Pieris brassicae L.), the cabbage moth (Mamestra brassicae L.), the greater wax moth (Galleria melonella L.) and the black-veined white (Aporia crataegi L.), death of individuals was noted on the second day of the experiment. However, mortality rate was signifi cantly different between species and increased over time. The diamondback moth (Plutella xylostella L.) was more susceptible to the pathogen. Signifi cant mortality of the larvae of this phytophage was observed already on the fi rst day after infection; while on the second day of the experiment all individuals died. Lethal time LT90 of more resistant species (black-veined white) and more sensitive ones (diamondback moth) differed sevenfold. Semi-lethal concentrations of B. thuringiensis strain for the tested insect species were determined: on the third day of the experiment, lethal concentration LC50 for the cabbage moth larvae, the greater wax moth and blackveined white ranged from 1.7 to 4.5 × 108 spores/ ml. For the cabbage white butterfl y, it was much lower (1.8×107 spores/ml). For diamondback moth caterpillars, LC50 was 4.25×107 spores/ml already one day after infection. It was noted that the specifi city of B. thuringiensis strain is associated with various mechanisms of insect protection from pathogens, and is due to individual characteristics of the species. In particular, the pH of excrement of intact caterpillars of the cabbage white butterfl y, a species sensitive to B. thuringiensis, was 2 times higher than that of caterpillars of the greater wax moth – 8.9 and 4.3, respectively, which is one of the reasons for the susceptibility (or resistance) of the species to bacterial entomopathogen.

scholarly journals Effect of intercropping white cabbage with French Marigold (Tagetes patula nana L.) and Pot Marigold (Calendula officinalis L.) on the colonization of plants by pest insects

2009 ◽  
Vol 21 (1) ◽  
pp. 95-103 ◽  
Author(s):  
Beata Jankowska ◽  
Małgorzata Poniedziałek ◽  
Elżbieta Jędrszczyk
Keyword(s):  
Pieris Rapae ◽  
Diamondback Moth ◽  
Mamestra Brassicae ◽  
Tagetes Patula ◽  
Calendula Officinalis ◽  
Large White ◽  
White Cabbage ◽  
Pest Insects ◽  
Pot Marigold ◽  
The Impact

Abstract In 2003 - 2005 the impact of intercropping white cabbage ‘Bently F1’ with French Marigold (Tagetes patula nana ‘Kolombina’) and Pot Marigold (Calendula officinalis ‘Promyk’) on the occurrence of pest insects was estimated. On plots where cabbage was intercropped the number of cabbage aphid Brevicoryne brassicae L. and flea beetles Phyllotreta was significantly lower when compared with control variant (homogenous crop). Intercropping had an effect on the butterfly oviposition too. The lower number of eggs of the small white butterfly Pieris rapae L., large white butterfly P. brassicae L., cabbage moth Mamestra brassicae L. and larvae and pupae of the diamondback moth Plutella xylostella L. were observed on plots with Calendula and Tagetes. Intercropping with Pot Marigold was the most effective pest control on cabbage.

scholarly journals Evaluation of a first-event sampling model for monitoring cabbage pests

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
K.G. Kim ◽  
S. Toepfer
Keyword(s):  
Decision Making ◽  
Pieris Rapae ◽  
Production Systems ◽  
Diamondback Moth ◽  
Sampling Plan ◽  
Sampling Plans ◽  
Integrated Production ◽  
Fixed Sample ◽  
Current Sampling ◽  
Cabbage Pests

First-event sampling models for monitoring diamondback moth Plutella xylostella (Lepidoptera: Plutellidae) and small white butterfly, Pieris rapae (Pieridae) are used in integrated production systems of cabbage. Decision-making accuracy and reduced labour needs of those models were unknown compared to fixed-sample monitoring. This we addressed through computer simulations of the currently most used first-event sampling plan for cabbage in DPR Korea. Indeed, this sampling plan in five subplots of a cabbage field at a sampling limit of a maximum 10 plants each, appeared less labour intense than many fixed-sample monitoring plans. However, only a medium accuracy of infestation estimates and correct decision-making for or against pest control was achieved, particularly at high pest densities. If accepting such medium accuracy, the current sampling plan could be reduced from five to three subplots at a sampling limit of 10 plants each, or to a maximum of five assessed plants per each of five subplots, this is, without further loosing accuracy whilst saving labour. Such sampling requires little investment in time and might be therefore applied and validated across more cabbage productions systems of East Asia. Ultimately, first-event sampling, as other sampling plans will remain a compromise between accuracy and practicability.

scholarly journals Results of assessment of white cabbage and napa cabbage for resistance to diamondback moth and cabbage moth

2020 ◽  
pp. 37-40
Author(s):  
Р.А. Багров ◽  
Н.Ф. Денискина ◽  
Г.А. Костенко
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Weather Conditions ◽  
Population Characteristics ◽  
Mamestra Brassicae ◽  
Breeding Work ◽  
Damage Rate ◽  
White Cabbage ◽  
Favorable Weather ◽  
Cabbage Moth

Представлены результаты оценки линейного и гибридного материала капусты белокочанной на устойчивость к капустной моли (Plutella xylostella (L.)) и гибридов капусты пекинской на устойчивость к капустной моли и капустной совке (Mamestra brassicae L.). Цель исследований: выделить устойчивые к листогрызущим фитофагам образцы капусты белокочанной для дальнейшей селекционной работы и гибриды капусты пекинской для выращивания безопасной товарной продукции. Задачи исследований: оценить повреждаемость образцов капусты белокочанной гусеницами капустной моли, оценить повреждаемость гибридов капусты пекинской гусеницами капустной моли и капустной совки. Для оценки показателей состояния природной и лабораторной популяций вредителей использовали популяционные характеристики: численность, плодовитость, продолжительность развития, смертность на разных стадиях развития. При работе с белокочанной и пекинской капустой использовали стандартные методики. Повреждаемость растений капусты белокочанной оценивали визуально в фазе розетки и фазе рыхлого кочана по характерным повреждениям, используя шестибальную шкалу ВИЗР. По результатам оценки капусты белокочанной для дальнейшей селекционной работы отобраны линии без признаков повреждения капустных растений: в группе раннеспелых: Су-200м, 3002 а1, Нозом б, Эксп2, в группе среднепоздних 347 и 52, в группе позднеспелых Су–1г54, 5-41, L 11-13, 613. По результатам оценки повреждаемости образцов капусты белокочанной в 2019 году, на жестком фоне заселения из-за благоприятных для фитофага погодных условий, выявлено два образца (504, 505) сильно повреждаемых капустной молью. Шесть образцов (511, 522, 524, 516, 526, 537) имели балл поврежденности 1 и менее. Комплексная энтомологическая оценка гибридов пекинской капусты различными методиками выявила устойчивый гибрид F1 Гидра, который можно рекомендовать для снижения пестицидной нагрузки на агроценоз и получения экологически безопасной продукции. The results of assessment of linear and hybrid material of white cabbage for resistance to diamondback moth (Plutella xylostella (L.)) and hybrids of napa cabbage for resistance to diamondback moth and cabbage moth (Mamestra brassicaeL.) are presented. The purpose of the research: to select breeding samples of white cabbage resistant to leaf-eating phytophagous insect for further breeding work and hybrids of napa cabbage for safe commercial products growing. Research tasks: to assess the damage rate of cabbage lines and hybrids by diamondback moth caterpillars, to assess the damage rate of napa cabbage hybrids by diamondback moth and cabbage moth caterpillars. To assess indicators of the state of natural and laboratory pest populations, we used population characteristics: number, fecundity, development duration, and mortality at different stages of development. When working with white cabbage and napa cabbage, standard methods were used. Damage to cabbage plants was assessed visually by characteristic damage at the stage of rosette and the stage of loose cabbage head using a six-point VIZR scale. According to the results of the assessment of white cabbage for further breeding work, lines without damage were selected: in the early-maturing group: Su-200m, 3002 a1, Nozom b, Exp2, in the middle-late group 347 and 52, in the late-maturing group Su-1g54, 5-41, L 11-13, 613. According to the results of damage assessment of white cabbage in 2019, against a harsh background of colonization due to favorable weather conditions for diamondback moth, two hybrids (504, 505) were found to be severely damaged by these insect. Six hybrids (511, 522, 524, 516, 526, 537) they had a damage score of 1 or less. A comprehensive entomological assessment of napa cabbage hybrids using various methods has revealed as resistant a F1Hydra hybrid that can be recommended for reducing the pesticide press on agrocenosis and obtaining environmentally safe products.

Inhibitory effects of an extract from non-host plants on physiological characteristics of two major cabbage pests

2017 ◽  
Vol 108 (3) ◽  
pp. 370-379 ◽  
Author(s):  
M. Dastranj ◽  
E. Borzoui ◽  
A. R. Bandani ◽  
O. L. Franco
Keyword(s):  
Pieris Rapae ◽  
Enzyme Inhibitors ◽  
Diamondback Moth ◽  
Larval Growth ◽  
Alternative Methods ◽  
Inhibitory Effects ◽  
Larval Body ◽  
Cabbage Butterfly ◽  
White Cabbage ◽  
Cabbage Pests

AbstractThe diamondback moth (Plutella xylostella) and small white cabbage butterfly (Pieris rapae) are the two main serious pests of cruciferous crops (Brassicaceae) that have developed resistance to chemical control methods. In order to avoid such resistance and also the adverse effects of chemical pesticides on the environment, alternative methods have usually been suggested, including the use of plant enzyme inhibitors. Here, the inhibitory effects of proteinaceous inhibitors extracted from wheat, canola, sesame, bean and triticale were evaluated against the digestive α-amylases, larval growth, development and nutritional indecs of the diamondback moth and small white cabbage butterfly. Our results indicated that triticale and wheat extracts inhibited α-amylolytic activity in an alkaline pH, which is in accordance with the moth and butterfly gut α-amylase optimum pH. Dose-dependent inhibition of two crucifer pests by triticale and wheat was observed using spectrophotometry and gel electrophoresis. Implementation of specificity studies showed that wheat and triticale-proteinaceous extract were inactive against Chinese and purple cabbage amylase. Triticale and wheat were resistant against insects’ gut proteases. Results of the feeding bioassay indicated that triticale-proteinaceous extract could cause a significant reduction in survival and larval body mass. The results of the nutritional indecs also showed larvae of both species that fed on a Triticale proteinaceous inhibitor-treated diet had the lowest values for the efficiency of conversion of ingested food and relative growth rate. Our observations suggested that triticale shows promise for use in the management of crucifer pests.

scholarly journals Effect of pot marigold (Calendula officinalis L.) and cypress spurge (Euphorbia cyparissias L.) plant water extracts on the occurrence of pest insects on white cabbage

2011 ◽  
Vol 23 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Beata Jankowska ◽  
Anna Wilk
Keyword(s):  
Pieris Rapae ◽  
Diamondback Moth ◽  
Mamestra Brassicae ◽  
Plant Water ◽  
Calendula Officinalis ◽  
Water Extracts ◽  
White Cabbage ◽  
Pest Insects ◽  
Pot Marigold ◽  
Euphorbia Cyparissias

Effect of pot marigold (Calendula officinalisL.) and cypress spurge (Euphorbia cyparissiasL.) plant water extracts on the occurrence of pest insects on white cabbageIn 2007-2008 the effects of pot marigold (Calendula officinalisL.) and cypress spurge (Euphorbia cyparissiasL.) water extracts on the occurrence of pest insects on white cabbage were tested. The numbers of cabbage aphid (Brevicoryne brassicaeL.) were significantly lower on the treated plants. During the period of the most numerous occurrence of aphids on the unsprayed plants, their number was almost twice as high as on the plants sprayed with spurge extract and almost three times as high as on the plants sprayed with marigold extracts. Spraying plants had an effect on the number ofPhyllotreta atraandP. nemorumbeetles andPieris rapaeL. eggs. Pot marigold extract proved to be the most effective in this respect. Egg clusters of large white butterfly (P. brassicaeL.) and cabbage moth (Mamestra brassicaeL.) were observed only in 2008, and only on the control. In the case of the diamondback moth,Plutella xylostellaL., only marigold extract had a positive impact on reducing its number. Diamondback moth larvae numbers were even slightly higher on plants treated with cypress spurge extract than on the control plots where plants had not been sprayed.

scholarly journals Quantity of glucosinolates in 10 cabbage genotypes and their impact on the feeding of Mamestra brassicae caterpillars

2014 ◽  
Vol 66 (2) ◽  
pp. 867-876 ◽  
Author(s):  
Tanja Bohinc ◽  
M. Devetak ◽  
S. Trdan
Keyword(s):  
Growth Period ◽  
Natural Resistance ◽  
Glucosinolate Content ◽  
Mamestra Brassicae ◽  
Moderate Correlation ◽  
Extent Of Damage ◽  
Cabbage Moth

In 2011, we studied the glucosinolate content in 5 cultivars and 5 cabbage hybrids grown outdoors in order to study their influence on the feeding of cabbage moth caterpillars (Mamestra brassicae). The selected genotypes were categorized into three groups, early (the growth period from 55 to 70 days), mid-early (80-90 days) and mid-late (110-140 days), while the samples of cabbage for glucosinolate analysis were taken at five intervals, during which we also assessed genotypes for the extent of damage caused by caterpillars. We found that the feeding of caterpillars affected primarily the mid-early and mid-late genotypes of cabbage, and that the glucosinolate content among the different cabbage genotypes varies. The highest content of the analyzed glucosinolates was established in mid-late genotypes. Glucobrassicin was the only glucosinolate found in all cabbage genotypes, yet its antixenotic effect (r=0.20) was very low. We found that sinalbin negatively affects the feeding of cabbage moth caterpillars in mid-early cabbage genotypes (r=-0.34), while the same effect of sinigrin on the extent of damage can be observed in mid-late genotypes (r=-0.27). We have established a strong or moderate correlation between the gluconapin (r=0.87) and progoitrin (r=0.66) contents in mid-late genotypes and the extent of damage caused by caterpillars. Our research proves that different cabbage genotypes are responsible for different susceptibilities to damage by the cabbage moth, and that one of the factors of natural resistance of cabbage are also glucosinolates. Despite this, due to their variability in cabbage we cannot precisely determine the set of genotypes that would ensure a higher cabbage yield as a result of less damage caused by the cabbage moth. Thus, we need to identify in more detail the reasons for the time and quantum variability of glucosinolates in Brassicaceae.

scholarly journals Phenology of the cabbage moth, Mamestra brassicae L., in Kagoshima

1978 ◽  
Vol 24 ◽  
pp. 112-114
Author(s):  
Saburo FUKAMACHI ◽  
Hidemi KAMIWADA
Keyword(s):  
Mamestra Brassicae ◽  
Cabbage Moth

scholarly journals Using Improved Edge Detection Method to Detect Mining-Induced Ground Fissures Identified by Unmanned Aerial Vehicle Remote Sensing

2021 ◽  
Vol 13 (18) ◽  
pp. 3652
Author(s):  
Duo Xu ◽  
Yixin Zhao ◽  
Yaodong Jiang ◽  
Cun Zhang ◽  
Bo Sun ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Edge Detection ◽  
Unmanned Aerial Vehicle ◽  
Field Experiments ◽  
High Efficiency ◽  
Detection Method ◽  
Laplacian Operator ◽  
Ground Fissures ◽  
Aerial Vehicle ◽  
Edge Detection Method

Information on the ground fissures induced by coal mining is important to the safety of coal mine production and the management of environment in the mining area. In order to identify these fissures timely and accurately, a new method was proposed in the present paper, which is based on an unmanned aerial vehicle (UAV) equipped with a visible light camera and an infrared camera. According to such equipment, edge detection technology was used to detect mining-induced ground fissures. Field experiments show high efficiency of the UAV in monitoring the mining-induced ground fissures. Furthermore, a reasonable time period between 3:00 a.m. and 5:00 a.m. under the studied conditions helps UAV infrared remote sensing identify fissures preferably. The Roberts operator, Sobel operator, Prewitt operator, Canny operator and Laplacian operator were tested to detect the fissures in the visible image, infrared image and fused image. An improved edge detection method was proposed which based on the Laplacian of Gaussian, Canny and mathematical morphology operators. The peak signal-to-noise rate, effective edge rate, Pratt’s figure of merit and F-measure indicated that the proposed method was superior to the other methods. In addition, the fissures in infrared images at different times can be accurately detected by the proposed method except at 7:00 a.m., 1:00 p.m. and 3:00 p.m.

Aestival dormancy in the cabbage moth Mamestra brassicae L. (Lepidoptera: Noctuidae)

Oecologia ◽  
1988 ◽  
Vol 76 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Klaus Peter Sauer ◽  
Cornelia Grüner
Keyword(s):  
Mamestra Brassicae ◽  
Lepidoptera Noctuidae ◽  
Cabbage Moth
Sign in / Sign up

Export Citation Format

Share Document