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The effect of Atpolan 80 EC on atrazine residues in the soil

100%

Swarcewicz M., Skórska E., Paździoch W.

Polish Journal of Chemical Technology

2007

vol. 9

issue 3

5-8

The persistence of atrazine residues in soils may have an effect on the contamination of the ground water or surface water. Besides the active ingredients, pesticide formulations contain many other compounds called adjuvants. One of them is the Atpolan 80 EC which belongs to the group of oil mineral adjuvants used as tank-mix. The utilization of a fraction of paraffin oil 1113 is one of the examples of utilising waste as the component of Atpolan 80 EC in agriculture. When the Atpolan concentration comprised 1.25% (v/v), the atrazine degradation rate decreased in the sandy loam and muck soil. The half-life of atrazine increased over a period of 40 or 57 days, depending on the type of the soil. The least significant effect was caused by Atpolan concentration at 0.25 and 0.75%. This result points at the capability of limiting atrazine run-off and leaching down the soil profile. Each ingredient of the pesticide, besides having the overall ability to distribute between different phases, also demonstrates some single compound behaviour. This paper shows our current understanding of the factors that influence the adjuvant performance and their potentially complex interactions with the pesticide.

Can Ising model and/or QKPZ equation properly describe reactive-wetting interface dynamics?

75%

Efraim Y., Taitelbaum H.

Open Physics

2009

vol. 7

issue 3

503-508

The reactive-wetting process, e.g. spreading of a liquid droplet on a reactive substrate is known as a complex, non-linear process with high sensitivity to minor fluctuations. The dynamics and geometry of the interface (triple line) between the materials is supposed to shed light on the main mechanisms of the process. We recently studied a room temperature reactive-wetting system of a small (∼ 150 μm) Hg droplet that spreads on a thin (∼ 4000 Å) Ag substrate. We calculated the kinetic roughening exponents (growth and roughness), as well as the persistence exponent of points on the advancing interface. In this paper we address the question whether there exists a well-defined model to describe the interface dynamics of this system, by performing two sets of numerical simulations. The first one is a simulation of an interface propagating according to the QKPZ equation, and the second one is a landscape of an Ising chain with ferromagnetic interactions in zero temperature. We show that none of these models gives a full description of the dynamics of the experimental reactivewetting system, but each one of them has certain common growth properties with it. We conjecture that this results from a microscopic behavior different from the macroscopic one. The microscopic mechanism, reflected by the persistence exponent, resembles the Ising behavior, while in the macroscopic scale, exemplified by the growth exponent, the dynamics looks more like the QKPZ dynamics.

Growth inhibition of Fusarium verticillioides (Sacc.) Nirenberg by isolates of Trichoderma pseudokoningii strains from maize plant parts and its rhizosphere

75%

Sobowale A. A., Cardwell K. F., Odebode A. C., Bandyopadhyay R., Jonathan S. G.

Journal of Plant Protection Research

2005

vol. 45

issue 4

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1 Bandyopadhyay R.

1 Cardwell K. F.

1 Efraim Y.

1 Jonathan S. G.

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1 Paździoch W.

1 Skórska E.

1 Sobowale A. A.

1 Swarcewicz M.

1 Taitelbaum H.

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The effect of Atpolan 80 EC on atrazine residues in the soil

Can Ising model and/or QKPZ equation properly describe reactive-wetting interface dynamics?

Growth inhibition of Fusarium verticillioides (Sacc.) Nirenberg by isolates of Trichoderma pseudokoningii strains from maize plant parts and its rhizosphere