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Potential Effect of Nutrient on Native/Invasive Plants in Disturbed Road-cuts.

Authors: Park, J.
Mentor: Jennifer Reithel
Year: 2014
Publisher: UNKNOWN

Abstract

Invasive species is destructive to many habitats because it prevents several native species to grow. Controlling invasive species is challenging because invasive also prefer conditions what native likes (Gusewell 2004). The purpose of the experiment was to manipulate the nutrient available to L. vulgarisulgaris, Cirsium arvense, and native species to prevent invasive species’ fast growth, and ultimately, domination. Among eight plots per a field experiment, I added sawdust and sugar to the experimental plot to determine whether percent cover and growth rate of invasive plants and native plants were affected. To test effects of carbon and nitrogen on the growth rate of juvenile L. vulgaris, I treated four different groups with fertilizer, sugar/sawdust, sugar/sawdust/fertilizer, and nothing. Carbon compositions of straw site plant community (Bromus. sp, 28.9%±0.58) were significantly lower than control one (Bromus. sp, 38.3%±0.6; Hackelia.sp , 7.44%±0.59). In the pot study, plants with carbon (33%; viability) and carbon /nitrogen (58%) treatment died significantly more than plants with nitrogen (100%), and control (100%) treatment. Plants with carbon (0.22g±0.079) and carbon/nitrogen (0.28g±0.082) treatment had significantly higher biomass than plants with nitrogen (0.45g±0.076) and control (0.49g±0.079) treatments. Changes in the microbe community might inhibit the L. vulgaris root growth and explain the results in the pot study.

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