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Ecological and agriculture impacts of bakery yeast wastewater use on weed communities and crops in an arid environment
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Ecological and agriculture impacts of bakery yeast wastewater use on weed communities and crops in an arid environment
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Journal Article
Ecological and agriculture impacts of bakery yeast wastewater use on weed communities and crops in an arid environment
2017
Overview
The goal of this study was to evaluate the impact of using yeast wastewater (YW) on weed communities. The study showed that all ecological parameters including species richness, dispersion, density, frequency, and % of vegetation cover were significantly increased in the site irrigated with YW compared to a natural rain fed site and another site irrigated with fresh water. The vegetation cover (%) was significantly increased by 2-folds in the site irrigated with YW (52%) than the one irrigated with fresh water (27%). Species richness increases to 23 in the site irrigated with yeast wastewater compared to 12 species in natural rain fed site and 7 species in areas irrigated with fresh water. The 10 studied weed species germinated better at 10 and 20% dilutions of baker’s YW. However, only five species achieved few germination (3–25%) at 50% of YW and the two species
Sisymbrim irio
and
Cardariia droba
achieved (6–13%) germination using 100% YW. No germination occurred for the crop seeds (tomato, squash, lentil, and barley) at 50 and 100% YW. For tomato, 10 and 20% of YW achieved better germination (82 and 63%, respectively) than the seeds of other species, followed by barley with 80 and 53% of germination. Squash showed the lowest germination percentage with 59 and 42% at 10 and 20% of YW, respectively. Yeast wastewater seems to be crop specific and can affect weed species composition and relative abundances and care should be taken before using the effluent for irrigation of tree plantations and crops.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
