Effect of Soil Treatments and Amendments on the Nematode Community under Miscanthus Growing in a Lead Contaminated Military Site
| Autor: | Olexander Zhukov, Tim Todd, Zafer Alasmary, Larry E. Erickson, Valentina Pidlisnyuk, Kraig L. Roozeboom, Lawrence C. Davis, Ganga M. Hettiarachchi, Tatyana Stefanovska |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
agronomic practices
mixed vegetation Growing season 010501 environmental sciences Biology 01 natural sciences diversity lcsh:Agriculture phytotechnology trophic groups 0105 earth and related environmental sciences Soil health nematode communities soil pollution biosolids lcsh:S Sowing 04 agricultural and veterinary sciences Miscanthus biology.organism_classification Soil contamination maturity index Tillage Energy crop Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Plant cover Agronomy and Crop Science |
| Zdroj: | Agronomy Volume 10 Issue 11 Agronomy, Vol 10, Iss 1727, p 1727 (2020) |
| ISSN: | 2073-4395 |
| DOI: | 10.3390/agronomy10111727 |
| Popis: | Applying phytotechnologies with energy crops on lands contaminated with trace elements provides cellulosic biomass and improves soil health. The process can be reflected in changes in the soil nematode community structure. This study assessed the nematode community composition of soil with Miscanthus grown with different agronomic practices. The research was conducted at Fort Riley, Kansas, USA, in soil with aged contamination by Pb at 1000 to 1500 mg/kg. The experimental design was a randomized complete block composed of four replications of five treatments: Control-undisturbed mixed plant cover and four conditions of Miscanthus growth, which consisted of No-till, Till (immediately before planting), Till + P, and Till + biosolids. Analysis of abundance, diversity, and community functional status indicators showed differential sensitivity of nematode taxa to agronomic treatments. Significant transformations in the nematode trophic group structure occurred under Miscanthus cultivation compared with the undisturbed mixed plant cover. Shannon and Pielou index response to agronomic treatments illustrated decreasing nematode community diversity with all Miscanthus agronomic conditions. However, agronomic practices led to increasing nematode community maturity, but those effects varied between spring and fall seasons. Increasing herbivores and omnivore-predators were the primary drivers of the observed changes in the nematode community due to planting Miscanthus. The nematode ecological structure indicators suggested that growth in Pb-contaminated land using different agronomical practices likely affects essential soil processes. More study is needed to define the effects of pre-plant tillage and amendments to soil nematode communities and Miscanthus yield over multiple growing seasons of this perennial crop. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |