Allelopathy in asparagus 1: Reduction of the allelopathic effect on asparagus by the flowable agent in activated Carbon

Satoru Motoki, T. Ozawa, K. Komatsu, M. Tsukada, T. Hattori, T. Komura, J. Oka

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Citations (Scopus)

Abstract

In Nagano Prefecture, Japan, asparagus (Asparagus officinalis L.) is grown on 1,930 hectares (1999). Approximately 200 hectares in Nagano Prefecture is now being replanting. When asparagus is planted in a field where it has been grown before, there are often lower yields and greater loss of young plants. One of the causes of these phenomena is allelopathy. In this study, we examined the effect of the flowable agent in activated carbon (herein referred to as "activated carbon F") to mitigate allelopathy in asparagus. The results of tests on lettuce as an assay plant and one-year-old asparagus showed that activated carbon F acts to mitigate allelopathy and promote growth in asparagus. In all 3 areas where local adaptability was examined, the growth of asparagus was improved as measured by the weight of the rhizome and storage roots, the number of storage roots, the growth of plants and GI' (growth index) in plots treated with activated carbon F (using a 25 to 100-fold dilution) compared to non-treated plots. It can be concluded that activated carbon F is effective in mitigating the allelopathy of asparagus in the field.

Original languageEnglish
Title of host publicationX International Asparagus Symposium
PublisherInternational Society for Horticultural Science
Pages381-386
Number of pages6
ISBN (Print)9789066057968
DOIs
Publication statusPublished - 1 Jan 2002

Publication series

NameActa Horticulturae
Volume589
ISSN (Print)0567-7572

Keywords

  • Asparagus officinalis L.
  • Bioassay
  • Flowable activated carbon
  • Local adaptability
  • Replanting

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