Interaction Between Two Types of Earthworm and Ageratum on Soil Physicochemical Properties

Agricultural Science Pub Date : 2020-03-25 DOI:10.30560/AS.V2N2P1

I. Nweke

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Abstract

Earthworms are one of the most important soil organisms in tropical ecosystem as they influence mineralogical, structural and microbial composition of soil. The study investigated the effect of interaction between two Nigerian earthworms Eudrilus Eugeniae and Irridodrilus sp and Ageratum species (AG) on soil physicochemical properties in potted experiment. The treatment consisted of 1000g subsoil treated with ageratum (AG); Ageratum + soil inoculated with Eudrilus Eugeniae (AE), Ageratum + soil inoculated with Irridodrilus sp (AI) and control soil not treated (CO). The results of the study showed remarkable differences between the treatments in soil physicochemical properties. The pots inoculated with Eudrilus Eugeniae (AE) relative to other treatments produced high quality ion exchange as evidence from the high (CEC) recorded, enhanced soil aggregation 73% compared to 52% recorded in AI, stabilization of soil aggregates and enhanced availability of nutrient elements by 150% compared to 120% observed in AI. High level of soil pH (9.15) was recorded in AE. AG induced 62% increase in soil erodibility and only 9% increase in availability of soil nutrients. AG was found to be toxic particularly to Irridodrilus whose percentage survival was 0% relative to 67% of Eudrilus Eugeniae whose weight loss was 27%. Ageratum is a bio-pesticide and bio-fertilizer of which its production is simple and cost effective and the efficacy for soil management will require the presence of active soil organisms like earthworms to process Ageratum adequately as was found in this study. The primary materials used in this study are abundantly available and within the reach of farmers. The production and application is eco-friendly, promotes sustainable soil productivity, soil conservation and environmental health. This technology will discourage the use of chemical pesticides and fertilizers in the study area if well integrated in crop production activities.

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两种蚯蚓与无虫对土壤理化性质的相互作用

蚯蚓是热带生态系统中最重要的土壤生物之一，因为它们影响土壤的矿物学、结构和微生物组成。在盆栽试验中，研究了两种尼日利亚蚯蚓Eudrilus Eugenia和Irridodrilus sp以及Ageatum物种（AG）之间的相互作用对土壤理化性质的影响。处理包括用ageratum（AG）处理1000g底土；接种Eudrilus Eugenia（AE）的Ageratum+土壤、接种Irridodrilus sp（AI）的Ageeratum+土壤和未处理的对照土壤（CO）。研究结果表明，不同处理的土壤理化性质存在显著差异。与其他处理相比，接种Eudrilus Eugenia（AE）的花盆产生了高质量的离子交换，这是记录的高（CEC）的证据，与AI中记录的52%相比，提高了73%的土壤聚集性，与AI观察到的120%相比，稳定了土壤聚集性并提高了150%的营养元素可用性。AE中记录了高水平的土壤pH（9.15）。AG使土壤可蚀性增加62%，土壤养分有效性仅增加9%。AG被发现是有毒的，特别是对Irridodrilus，其存活率为0%，而Eudrilus Eugenia的体重减轻了27%，存活率为67%。Ageratum是一种生物农药和生物肥料，其生产简单且成本效益高，土壤管理的功效需要蚯蚓等活性土壤生物的存在才能充分处理Ageratum，正如本研究所发现的那样。本研究中使用的主要材料非常丰富，农民可以获得。生产和应用是环保的，促进可持续的土壤生产力、土壤保护和环境健康。如果能很好地融入作物生产活动，这项技术将阻止研究区域使用化学杀虫剂和化肥。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Agricultural Science

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