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Accueil du site → Master → Etats Unis → 1974 → Some effects of carbamate insecticide on primary producers in a desert grassland ecosystem

New Mexico State University (1974)

Some effects of carbamate insecticide on primary producers in a desert grassland ecosystem

Hickman GW.

Titre : Some effects of carbamate insecticide on primary producers in a desert grassland ecosystem

Auteur : Hickman GW.

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1974

Résumé
Field and greenhouse studies were undertaken to determine some effects of a carbamate insecticide on primary producers in a desert grassland ecosystem. A 2500 m2 field area was sprayed with Sevin and periodically sampled over a period of one year to obtain density, cover and biomass data. These results were compared to an untreated control area. Over the study period, no significant differences developed in the above parameters between treatment and control areas. In the greenhouse, field transplanted Boutelua eriopoda plants received various concentrations of insecticide and were sampled over a period equivalent to the growing season for vegetative and reproductive biomass. No significant differences developed among the various treatments and control. The only study that produced significantly different results was the germination experiment. B. eriopoda seeds were soaked in various concentrations of insecticide and allowed to germinate in moistened petri plates. The medium concentration tested, 0.01%, produced significantly higher germination percentages than the water only control.

Mots Clés : Bouteloua, germination, , grassland, insecticide effects, carbamate, primary production, insecticide, Sevin

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Page publiée le 1er mai 2016, mise à jour le 25 décembre 2019