Effect of picloram concentrations on residues in the soil

Bussetti, S.G. de; Ferreiro, E.A.

Agrochimica 40(5/6): 304-316

1996


ISSN/ISBN: 0002-1857
Accession: 002815973

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Abstract
Adsorption-desorption of picloram (applied at the recommended application rate) by ten soils of Bahia Blanca (Argentina) was studied. In order to show the effect of concentration on residuality, the N dissipation index is defined. It is possible to calculate - from adsorption isotherms - the number of times the soil should be changed by a new portion until adsorption is lowered to undetectable values. This N index show a good relation with some soil properties, the lower N values corresponding to acid soils with a good supply of organic matter and high cation exchange capacity.