A Comparative Study of the Reproductive and the Vermicomposting Ability of Three Generations of Epigeic and Anecic Earthworms When Subjected to a Toxic Weed (Ipomoea) as the Sole Feed

IF 2 4区 农林科学 Q3 ECOLOGY Compost Science & Utilization Pub Date : 2020-01-02 DOI:10.1080/1065657X.2019.1709918
S. A. Abbasi, P. Patnaik, Tabassum- Abbasi, Channgam Khamrang, Tasneem Abbasi
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引用次数: 2

Abstract

Abstract Recent studies by these authors have shown that the toxic and allalopathic weed ipomoea (Ipomoea carnea), gets transformed into benign organic fertilizer when subjected to vermicomposting. To derive benefit from this finding, it is necessary that a process should be made available for uninterrupted and efficient conversion of ipomoea into vermicompost. The present study has been done toward development of such a process, based on the concept of high-rate vermicomposting. It explores the relative ability to vermicompost ipomoea, and to reproduce in ipomoea-fed vermireactors, of successive generations of four species of earthworms — born and raised in ipomoea-fed vermireactors — in comparison to the first generation which had been raised to adulthood on cow-dung. Three epigeic species Eisenia andrei, Peryonix sansibaricus, Lumbricus rubillus, and one anecic Drawida willsi were explored for the purpose. The results, obtained over 480 days of uninterrupted reactor operation, show that the first generation of all four species of earthworms was slow to adapt to the ipomoea feed and took about 40 days to produce consistent quantities of vermicast. The second and the third generations didn’t need this adaptation and each generated vermicompost at significantly faster rates than it’s previous generation. Overall, the third generation of E. andrei, P. sansibaricus, L. rubellus and D. willsi produced 40, 41, 28, and 26% more vermicast, respectively, than the pioneers of the corresponding species. Similar trend was seen in fecundity as well. Each new generation produced more juveniles and cocoons than the previous generation, the increase being statistically significant at ≥ 95% confidence level. The findings reveal that earthworms can be made to adapt to ipomoea as their sole feed and the earthworm generations born and raised in ipomoea-fed vermireactors display significantly greater vermicomposting ability as well on fecundity than the earthworms which had been cultured on animal manure.
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以毒草为唯一饲料的3代附生蚯蚓和异生蚯蚓繁殖和蚯蚓堆肥能力的比较研究
摘要这些作者最近的研究表明,当进行蚯蚓堆肥时,有毒的、有全草病的杂草ipomoea(ipomoea carnea)会转化为良性有机肥料。为了从这一发现中获益,有必要制定一个不间断、高效地将ipomoea转化为蚯蚓堆肥的过程。本研究基于高速蚯蚓堆肥的概念,致力于开发这种工艺。它探索了四种蚯蚓的相对繁殖能力,与第一代在牛粪上长大成人的蚯蚓相比,这四种蚯蚓是在以蚯蚓为食的蚯蚓中出生和长大的。为此,对三种表观植物——安氏爱胜螺、桑氏Peryonix sansibaricus、rubillus Lumbricus和一种珍奇植物Drawida willsi进行了探索。结果,超过480 连续几天不间断的反应器运行表明,所有四种蚯蚓的第一代对ipomoea饲料的适应缓慢,大约需要40天 天来生产出一致数量的朱砂。第二代和第三代不需要这种适应,每一代产生蚯蚓堆肥的速度都比上一代快得多。总的来说,第三代的E.andrei、P.sansibaricus、L.rubellus和D.willsi分别比相应物种的先驱多出40%、41%、28%和26%的朱砂。在繁殖力方面也出现了类似的趋势。每一代新生代都比上一代产生了更多的幼体和茧,在≥95%的置信水平下,这一增长具有统计学意义。研究结果表明,蚯蚓可以适应以ipomoea为唯一饲料,在ipomoea饲养的蚯蚓反应器中出生和长大的蚯蚓后代比在动物粪便中培养的蚯蚓表现出更大的蚯蚓堆肥能力和繁殖力。
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来源期刊
Compost Science & Utilization
Compost Science & Utilization 农林科学-生态学
CiteScore
4.10
自引率
0.00%
发文量
0
审稿时长
>36 weeks
期刊介绍: 4 issues per year Compost Science & Utilization is currently abstracted/indexed in: CABI Agriculture & Environment Abstracts, CSA Biotechnology and Environmental Engineering Abstracts, EBSCOhost Abstracts, Elsevier Compendex and GEOBASE Abstracts, PubMed, ProQuest Science Abstracts, and Thomson Reuters Biological Abstracts and Science Citation Index
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