Plant Protection Science - Online first

Comparison of different modeling approaches to estimate cardinal temperatures for germination of Persicaria lapathifolia, Polygonum aviculare and Solanum nigrumOriginal Paper

Donato Loddo, Stefano Carlesi, Nebojša Nikolić, Roberta Masin

Plant Protect. Sci., X:X | DOI: 10.17221/175/2024-PPS  

Emergence predictive models can facilitate weed management, but estimating cardinal temperatures for germination of target species is necessary. Germination tests at a range of alternating temperatures from 12.5/2.5 °C to 35/25 °C were conducted to estimate cardinal temperatures of Persicaria lapathifolia (L.) Delarbre, Polygonum aviculare L. and Solanum nigrum L. Two statistical methodologies were tested: the Thermal time-to-event model (TTEM) and the Threshold limit model (TL). Germination of P. aviculare was maximum at low-mid temperatures, where its optimal range probably lies, and decreased at high temperatures. No...

Assessing stem rust tolerance in commercial wheat varieties: Insights from field trials in KazakhstanOriginal Paper

Akerke Maulenbay, Aralbek Rsaliyev

Plant Protect. Sci., X:X | DOI: 10.17221/219/2024-PPS  

This study provides the first comprehensive assessment of stem rust tolerance in commercial wheat varieties from Kazakhstan and Russia, including spring and winter varieties. Field trials were conducted to compare yield and agronomic traits between stem rust-inoculated and fungicide-treated plots, providing a practical framework for assessing tolerance. Key indicators such as disease severity, area under the disease progress curve, thousand kernel weight, and the stress tolerance index were evaluated to gauge variety resilience under stress. Significant variations in tolerance were observed, with varieties such as 'Pamyat' 47', 'Nadezhda', 'Lyubava...

Isolation and Identification of herbicidal active substances of Botrytis strain HZ-011Original Paper

Haixia Zhu, Liang Cheng, Yongqiang Ma

Plant Protect. Sci., X:X | DOI: 10.17221/183/2024-PPS  

The herbicidally active Botrytis strain HZ-011 was isolated from naturally infected leaves of Rumex patientia L., and previous studies found that strain HZ-011 exhibits highly effective herbicidal effects against the broadleaf weeds Amaranthus retroflexus L., Elsholtzia densa Benth, Malva crispa, and Chenopodium album L. In this study, the active components of strain HZ-011 were isolated, purified, and structurally characterised using silica gel column chromatography, thin-layer chromatography, and high-performance liquid chromatography. The extraction test was carried out using four organic solvents with different polarities,...