Results 81 to 90 of about 936 (209)

Future management of arable perennials - an introduction to the project AC/DC-weeds

Julius-Kühn-Archiv, 2020
Creeping perennial weeds have strong negative impacts on arable production. The common control practices are intensive inversion tillage and chemical herbicides. However, these traditional methods negatively affect non-target species and the environment.
Zhang, Han, Andert, Sabine, Brandsæter, Lars Olav, Rasmussen, Jesper, Robin, Marie-Helene, Salonen, Jukka, Tørresen, Kirsten S., Valantin-Morison, Muriel, Gerowitt, Bärbel   +8 more
doaj   +1 more source

Intermediate‐tier options in the environmental risk assessment of plant protection products for soil invertebrates—Synthesis of a workshop

Integrated Environmental Assessment and Management, Volume 20, Issue 3, Page 780-793, May 2024.
The introduction of intermediate tiers in the environmental risk assessment of plant protection products for soil organisms can help to reduce uncertainties in the risk assessment and serve as a bridge between the Tier 1 and higher‐tier risk assessment.
Gregor Ernst, Mónica J. B. Amorim, Melanie Bottoms, Amy C. Brooks, Mark E. Hodson, Stefan Kimmel, Pia Kotschik, Michael T. Marx, Tiago Natal‐da‐Luz, Céline Pelosi, Silvia Pieper, Agnes Schimera, Janeck Scott‐Fordsmand, Amanda Sharples, José P. Sousa, Cornelis A. M. van Gestel, Bart van Hall, Matthias Bergtold   +17 more
wiley   +1 more source

Effect of two NeemAzalTM formulations on honeybees under semi-field conditions

Plant Protection Science, 2005
The effects of NeemAzalTM formulations: NeemAzalTM T/S (1% azadirachtin) and NeemAzalTM granules (1% azadirachtin) on honeybees, Apis mellifera L., were studied under semi-field conditions.
Shawki Mahmoud Abd-Allah, Vladimír Táborský, František Kamler, Jan Kazda   +3 more
doaj   +1 more source

Quantifying the impact of Psylliodes chrysocephala injury on the productivity of oilseed rape

Pest Management Science, Volume 80, Issue 5, Page 2383-2392, May 2024.
The impact of Psylliodes chrysocephala adult and larval damage on oilseed rape yield was quantified to help develop improved thresholds for Integrated Pest Management. Up to 90% leaf area loss (simulated using a hole punch) during early growth did not affect yield.
Duncan J Coston, Suzanne J Clark, Tom D Breeze, Linda M Field, Simon G Potts, Samantha M Cook   +5 more
wiley   +1 more source

The BEL-rank of finite semifields [PDF]

Designs, Codes and Cryptography, 2016
In this article we introduce the notion of the BEL-rank of a finite semifield, prove that it is an invariant for the isotopism classes, and give geometric and algebraic interpretations of this new invariant. Moreover, we describe an efficient method for calculating the BEL-rank, and present computational results for all known small semifields.
Michel Lavrauw, John Sheekey
openaire   +4 more sources

The quantum group $\dot U$ and flag manifolds over the semifield Z [PDF]

, 2023
We give a parametrization of the canonical basis of the modified quantum group corresponding to a root datum in terms of the flag manifold over the semifield Z associated to the reductive group corresponding to the dual root datum.
Lusztig, G.
core   +1 more source

Experimental arena settings might lead to misinterpretation of movement properties

Insect Science, Volume 31, Issue 1, Page 271-284, February 2024.
Many studies examine movement in the laboratory and use different laboratory conditions, specifically arenas differing in structure, size, and shape. We examined the effect of the arena structure on movement properties using the red flour beetle as a model. The arena structure greatly affected movement properties, such as movement distance, turn angles,
Inon Scharf, Kimberley Hanna, Daphna Gottlieb   +2 more
wiley   +1 more source

Blocking sets and semifields

Journal of Combinatorial Theory, Series A, 2006
In the paper under review the author shows a relationship between semifield spreads of \({\text PG}(2 t - 1, q)\) and \(\text{GF}(s)\)-linear sets of rank \(n t\) with \(q = s^n\). For \(t = 2\), the indicator set of a semifield spread of \({\text PG}(3, q)\) defines a Rédei linear blocking set of \({\text PG}(2, q^2)\), disjoint from a Baer subline of
openaire   +3 more sources

Comparative Efficacy of Insecticides on Bactrocera tryoni and Zeugodacus cucumis (Diptera: Tephritidae) in Laboratory and Semifield Trials in Fruiting Vegetables [PDF]

, 2017
In-field management of Bactrocera tryoni (Froggatt) and Zeugodacus cucumis (French) (Diptera: Tephritidae) in fruiting vegetable crops has relied almost exclusively on organophosphate cover sprays.
L. J. Senior, Missenden, Brendan, B. P. Missenden, C. Wright, Wright, Carole L., Senior, Lara J.   +5 more
core   +1 more source

Tropical Solution of Discrete Best Approximation Problems

Mathematics
We consider discrete best approximation problems in the setting of tropical algebra, which is concerned with the theory and application of algebraic systems with idempotent operations. Given a set of input–output pairs of an unknown function defined on a
Nikolai Krivulin
doaj   +1 more source