Efficiency of Methodologies Used in the Evaluation of the Weed Seed Bank under Mediterranean Conditions

Autor: María Luisa Gandía, Juan Pablo Del Monte, María Inés Santín-Montanyá
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Agronomy, Vol 12, Iss 1, p 138 (2022)
Druh dokumentu: article
ISSN: 12010138
2073-4395
DOI: 10.3390/agronomy12010138
Popis: The objective of this study was to compare the efficiency of two methodologies, seed germination (SG) and seed physical extraction SPE), to assess the weed community from two locations with different soil and climatic conditions: M, with dry and low soil fertility, and S with high soil humidity and fertility. Over three years of study, the analysis of both methodologies confirmed differences in seed bank composition. In M, fewer seeds were recorded by SG than SPE (13.5% and 86.5% respectively), while in S, the difference between percentages was less (31.58% by SG and 68.41% by SPE). Our findings confirmed that Portulaca oleracea L., Amaranthus blitoides S. Watson and Chenopodium album L. were abundantly found in M. Anacyclus clavatus (Def.) Res. seeds were also found, mainly detected by SG. In S, Stellaria media (L.) Vill. was widely found. All species found in S were similarly detected by SG and SPE. The results confirmed that climatic and soil conditions influenced the efficiency of the methodology used to assess the seed bank. M conditions led to an increased seed reservoir, and both methodologies were necessary to obtain the seed bank composition. In S conditions, the seed bank was continuously renewed, and either one of methodologies defined the seed bank composition equally well.
Databáze: Directory of Open Access Journals
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