Location

Buller Hallway

Start Date

3-7-2014 2:30 PM

End Date

3-7-2014 4:00 PM

Description

Rhizobium rubi AT3-4RS/6 and tryptophan may be useful in replacing chemical herbicides as biological control agents. Previous research has shown that Rhizobium rubi AT3-4RS/6 produces IAA-like compounds that are deleterious to weed growth. In this project R. rubi AT3/4RS/6 will be formulated in Celite, a granular, diatomaceous earth carrier. The purpose of this research is to analyze if tryptophan influences R. rubi AT3/4RS/6 populations in the velveltleaf rhizosphere, and if this colonization is associated with reduced root weight and shoot length. The experiment design consists of five soil treatments (bacteria+tryptophan+celite, tryptophan+celite, bacteria+celite, celite alone, and soil alone) with 10 velvetleaf plants each. The decreasing trend of the root weights, shoot lengths, and bacterial colony counts of the tryptophan and R. rubi AT3/4RS/6 treatments will be recorded and analyzed using two statistical tests (t-test and ANOVA).

Acknowledgments

J.N. Andrews Honors Scholar

Advisor: Robert Zdor, Biology

Included in

Weed Science Commons

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Mar 7th, 2:30 PM Mar 7th, 4:00 PM

P-01 The Effects of Celite Formulated Rhizobium rubi and Tryptophan on Velvetleaf Plant Growth

Buller Hallway

Rhizobium rubi AT3-4RS/6 and tryptophan may be useful in replacing chemical herbicides as biological control agents. Previous research has shown that Rhizobium rubi AT3-4RS/6 produces IAA-like compounds that are deleterious to weed growth. In this project R. rubi AT3/4RS/6 will be formulated in Celite, a granular, diatomaceous earth carrier. The purpose of this research is to analyze if tryptophan influences R. rubi AT3/4RS/6 populations in the velveltleaf rhizosphere, and if this colonization is associated with reduced root weight and shoot length. The experiment design consists of five soil treatments (bacteria+tryptophan+celite, tryptophan+celite, bacteria+celite, celite alone, and soil alone) with 10 velvetleaf plants each. The decreasing trend of the root weights, shoot lengths, and bacterial colony counts of the tryptophan and R. rubi AT3/4RS/6 treatments will be recorded and analyzed using two statistical tests (t-test and ANOVA).