The main purpose of this study was to reveal if the UV-A, and visible light reflection leaves white cabbage varieties is correlated resistance against onion thrips. antixenotic (AR) thrips damage differed between Balashi, Bloktor, Riana – considered resistant Green Gem, Hurricane, Quisor susceptible. solar UV-A (340–400 nm) (401–650 were recorded. Correlation AR in range studied computed. According evaluation density always higher on susceptible than varieties. head forming contrast exterior...

Field assessments and genetic analyses on tansy aphid, Metopeurum fuscoviride Stroyan were made aiming to investigate whether a specialist aphid species its associated predator density differ between chemotypes of the plant host, tansy, essential oil composition host determines differences observed colonies M. inhabiting these different chemotypes. Tansy plants defined after volatile extractions as Camphor Pure Borneol Pure, respectively, with hybrid Hybrid, Thujone respectively. Ladybird...

We tested whether chemical content of individual Tansy plants influences aboveground arthropod and belowground soil microbial community composition. use defence composition as focus for our analysis, given that changes in are a dominant mechanism expected to modify nutrient cycling. Detailed assessment food webs were made on tansy chemotypes. Next generation DNA analyses used assess bacterial community. defended by Camphor Borneol had higher total diversity than control (soils under...

In this study, different maize fields cultivated under management systems were sampled to test corn leaf aphid, Rhopalosiphum maidis, populations in terms of total and endosymbiotic bacterial diversity. Corn aphid natural collected from traditionally managed grown high agricultural landscape diversity as well conventionally treated high-input monoculture with fertilizers use, hence low Total community assessment by DNA sequencing was performed using the Illumina MiSeq platform. total, 365...

The effect of fungal entomopathogen M. anisopliae strain NCAIM 362 against melolontha larvae in sweet potato was tested under open field conditions when crop management included compost supply and soil cover (agro-foil or agro-textile). Additionally, the same compared with α-cypermethrin greenhouse conditions. Soil microbial community using Illumina sequencing biological activity were as possible parameter influencing effect. According to results, textile may enhance effectiveness...

Abstract Aphids (Hemiptera: Aphididae) are small, phloem-feeding insects that exhibit remarkable adaptability and resilience to various environmental conditions, including heat stress. Recent research has shed light on the role of bacterial symbionts in influencing tolerance aphids. Additionally, an intriguing avenue investigation explored how aphids can acquire through a unique mechanism involving soil nematodes. In this paper, we provide in-depth overview interplay between stress,...

The aim our research was to develop effective methods for organic apple farming, based on the use of plant extracts control asexual reproduction Venturia inaequalis. Plant artemisinin, chelidonine, thymol, and populin tested in vitro under laboratory conditions significantly slowed down germination V. inaequalis conidia. During a 2-year study field conditions, effect 1% populin, an extract from black poplar buds, scab parallel with synthetic fungicides no-pesticide regime Golden Delicious...

In the present study, we conducted field surveys to detect population density of most important invasive weed species and their associated virus vectoring aphids in crops grown under high input (HIF) vs. low-input (LIF) conditions, with without fertilizers pesticides. The frequent were annual fleabane, Erigeron annua (L.), Canadian horseweed, canadensis (L.) goldenrod, Solidago (L.). These predominantly hosts Brachycaudus helichrysi Aulacorthum solani both management systems. 13% higher...

Ornamental plants are cultivated worldwide. Chrysanthemum is classified as one of the most important cut and potted flowers in countries. The consumer’s expectation to find small–compact, full inflorescences plants. To meet these demands, growers tending use plant growth retardants. Three indicum L. varieties (‘Smola White’, ‘Arber’ ‘Vienna White’) were assessed by using four regulators (PP–Bumper 250 EC; CC–Stabilan SL; MP–Medax Top SC; PD–Toprex SC). Results indicate that treated show...

The effect of populin extract from black poplar (Populus nigra) on seven different late blight strains was tested under laboratory and field conditions. growth rate hyphae found to be significantly lower in vitro after 3 4 v/v% applications. Stain M16 resistant treatment lab conditions, however. Both 5% 10% concentration reduced the strain’s severity potato leaves conditions proved even more effective than conventionally used fungicides Infinito 687 Sc Valis M. Higher infection intensity at...

The distribution pattern of the specialist crimson tansy aphid Uroleucon tanaceti (L.) on leaves its host plant, Tanacetum vulgare L., was investigated, along with associated arthropod predators, in relationship to differing chemotype (concentrations different terpenes/terpenoids phloem: borneol, camphor, carvone and β-thujone) order ascertain how a specific trait (here, secondary antifeedant content) can reinforce warning signal displayed by such aposematically coloured animals. colonies...

Artemisinin extracted from Artemisia annua has been used efficiently in malaria treatment since 2005. In this study, the variations plant parameters (plant biomass, glandular trichome density, essential oil total chemical content, artemisinin production, and polyphenol oxidase (PPO) activity) were tested under different soil types (Luvisol, Gleysol, Anthrosol sterile peat) cultivation conditions (potted plants semi-open field, open field experiments) for inoculated with arbuscular...

Abstract The germination of seed batches two rapeseed ( Brassica napus L.) hybrids (‘Hybrirock’ and ‘Factor’) were investigated in response to priming aqueous solutions ascorbic acid (10 mM), L-cysteine mM) triacontanol (1 μM), respectively tap water (as control treatment). Investigations focused on quality parameters, such as percentage, mean time, index, uniformity germination, seedling shoot root growth. Germinated seeds counted every 24 hours for a period seven days, recording the final...

The tissue invasion can be achieved by active (direct penetration of epidermal surface) and passive economic losses caused the pathogen exceeded $ 10 billion worldwide (Weiberg et al., 2013) due to impathogen in world (Dean 2012).One strategies for B. cinerea management is fungicide application,The most serious problem cyclamen production cinerea, which turns up at infection damage blossoms, but without growers choose between two solutions: avoid using pesbut save plants even so this...

Present studies were made to investigate the association between epidermal thickness and resistance of white cabbage against onion thrips, Thrips tabaci Lindeman, 1889 (Thysanoptera: Thripidae). Six varieties including three susceptible (‘Green Gem’, ‘Hurricane’ ‘Quisor’) resistant thrips (‘Balashi’, ‘Bloktor’ ‘Riana’) involved in studies. Additionally, extent antixenotic during head formation level damage at harvest also assessed compared varieties. A higher density was observed on than The...

In Eastern Europe, the traditional marketing of cyclamen is in period from middle February to March. The poor light winter months and higher number plants (because reduction heating costs) often result elongated plants. To avoid this, it recommended use plant growth retardants. At same time, another problem that flowers do not rise level rosette due unfavorable cultivation conditions. This can be solved with stimulants. experiment, we tested effect regulators on a frequently used variety...

Abstract The effect of populin extract from black poplar (Populus nigra) on late blight was assessed under laboratory and field conditions. growth rate hyphae found to be significantly lower after 1v/v% application, no detected 3 6v/v% application. Populin also reduced the light severity potato leaves From our results, we have concluded that can considered as a new environmentally-friendly alternative for control