<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Cultural practices such as tillage used for crop production influence the composition of the weed seed bank in the soil. In order to investigate the effects of different tillage methods on seed bank properties, species diversity and similarity, two laboratory and greenhouse experiments were carried out as randomized complete block design with four replications in 2011. Treatments included: once tillage per year (T1), twice tillage per year (T2), more than twice tillage (T3) and no tillage (T4). Laboratory results showed that the T3 and T4 treatments had the highest and the lowest observed seeds numbers, respectively. Between the laboratory observed weed seeds, the maximum weed seed numbers were Echinochloa crus-galli and Amaranthus retroflexus in the T3 treatment, while Chenopodium album, Polygonum aviculare and Cuscuta campestris had the highest seed numbers in the T2 treatment. At the greenhouse study, Chenopodium album, Amaranthus retroflexus and Hordeum morinum in the T2 treatment were dominant species. The highest diversity was observed in the T2 treatment, and Chenopodium album and Echinochloa crus-galli were dominant species in the T2 and T3 treatments. Maximum species similarity index was achieved from the T1 and T3 treatments. Thereby this study concluded that increasing of tillage number could affect the similarity index of weed seeds and subsequently alters the weed community composition.</p></abstract>

Cultural practices such as tillage used for crop production influence the composition of the weed seed bank in the soil. In order to investigate the effects of different tillage methods on seed bank properties, species diversity and similarity, two laboratory and greenhouse experiments were carried out as randomized complete block design with four replications in 2011. Treatments included: once tillage per year (T1), twice tillage per year (T2), more than twice tillage (T3) and no tillage (T4). Laboratory results showed that the T3 and T4 treatments had the highest and the lowest observed seeds numbers, respectively. Between the laboratory observed weed seeds, the maximum weed seed numbers were Echinochloa crus-galli and Amaranthus retroflexus in the T3 treatment, while Chenopodium album, Polygonum aviculare and Cuscuta campestris had the highest seed numbers in the T2 treatment. At the greenhouse study, Chenopodium album, Amaranthus retroflexus and Hordeum morinum in the T2 treatment were dominant species. The highest diversity was observed in the T2 treatment, and Chenopodium album and Echinochloa crus-galli were dominant species in the T2 and T3 treatments. Maximum species similarity index was achieved from the T1 and T3 treatments. Thereby this study concluded that increasing of tillage number could affect the similarity index of weed seeds and subsequently alters the weed community composition.

Do Tillage Methods Affect Germination and Species Similarity of Soil Weed Seeds Bank?

Islamic Azad University, Khomein Branch, Khomein, Iran

Young Researchers and Elite Club, Maragheh Branch, Islamic Azad University, Maragheh, Iran

Young Researchers and Elite Club, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran

University of Zabol, Sistan and Baluchestan, Iran

Acta Technologica Agriculturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Cultural practices such as tillage used for crop production influence the composition of the weed seed bank in the soil. In order to investigate the effects of...

Do Tillage Methods Affect Germination and Species Similarity of Soil Weed Seeds Bank?

Publié en ligne: 12 déc. 2015

Pages: 97 - 101

DOI: https://doi.org/10.1515/ata-2015-0019

Mots clés
diversity, germination, Shannon index, Sorenson index, tillage

© Slovak University of Agriculture in Nitra

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Do Tillage Methods Affect Germination and Species Similarity of Soil Weed Seeds Bank?

Publié en ligne: 12 déc. 2015

Pages: 97 - 101

DOI: https://doi.org/10.1515/ata-2015-0019

Mots clésdiversity, germination, Shannon index, Sorenson index, tillage

© Slovak University of Agriculture in Nitra

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
diversity, germination, Shannon index, Sorenson index, tillage