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Data from: Suppression of the invasive plant mile-a-minute (Mikania micrantha) by local crop sweet potato (Ipomoea batatas) by means of higher growth rate and competition for soil nutrients

Citation

Shen, Schicai et al. (2015), Data from: Suppression of the invasive plant mile-a-minute (Mikania micrantha) by local crop sweet potato (Ipomoea batatas) by means of higher growth rate and competition for soil nutrients, Dryad, Dataset, https://doi.org/10.5061/dryad.vb1qv

Abstract

Background: Competitive crops may provide potent management tools against invasive plants. To elucidate the competitive mechanisms between a sweet potato crop (Ipomoea batatas) and an invasive plant mile-a-minute (Mikania micrantha) field experiments were carried out in Longchuan County of Yunnan Province Southwest China utilizing a de Wit replacement series. The trial incorporated seven ratios of sweet potato and mile-a-minute plants in 25 m2 plots. Results: In monoculture the total biomass biomass of adventitious root leafstalk length and leaf area of sweet potato were all higher than those of mile-a-minute and in mixed culture the plant height branch leaf stem node adventitious root flowering and biomass of mile-a-minute were suppressed significantly (P<0.05). The relative yield (RY) of mile-a-minute and sweet potato was less than 1.0 in mixed culture indicating that intraspecific competition was less than interspecific competition. The competitive balance index of sweet potato demonstrated a higher competitive ability than mile-a-minute. Except pH other soil nutrient contents of initial soil (CK) were significantly higher than those of seven treatments. The concentrations of soil organic matter total N total K available N available P available K exchange Ca exchange Mg available Mn and available B were significantly greater (P<0.05) in mile-a-minute monoculture soil than in sweet potato monoculture soil and were reduced by the competition of sweet potato in the mixture. Conclusions: Evidently sweet potato has a competitive advantage in terms of plant growth characteristics and greater absorption of soil nutrients. Thus planting sweet potato is a promising technique for reducing infestations of mile-a-minute providing weed management benefits and economic returns from harvest of sweet potatoes. Nomenclature: sweet potato Ipomoea batatas (L.) Lam. mile-a-minute Mikania micrantha H.B.K.

Usage Notes

Location

Longchuan County
China
Yunnan Province