Abstract
Extended use of glyphosate poses the problem of its accumulation into soil and further on crops. The objective of this study was to evaluate the effects of different doses of soil glyphosate on growth parameters and chlorophyll content of maize Zea mays L. and bean Phaseolus vulgaris L. plants. An experiment was arranged in randomized complete blocks design with ten replications. Glyphosate solutions were applied to the soil in six concentrations, two subdoses of 0.1 and 0.2 g, the recommended dose of 0.4 g and three overdoses of 0.6, 0.8 and 1.0 g kg-¹ of soil. An uncontaminated soil control was used. At 21, 28, 35 and 42 days after sowing (DAS), evaluations of plant height, number of leaves, stem diameter, leaf surface and plant injury were conducted. At 42 DAS, nodulation (in bean), root length, chlorophyll and dry matter yield were assessed. Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants. Some similar effects of the product were observed on the both plants at each time period. Therefore, there was an evidence that soil glyphosate already at the recommended dose had an inhibitory and even a phytocide effects on non-target plants.
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Claims 5
Claim · model-written summary
Glyphosate in soil at the recommended dose and beyond caused significant damage to growth characteristics of maize.
- Treatment
- glyphosatee0
- Outcome
- growth characteristicse0
- Direction
- significant damagee0
- Comparator
- uncontaminated soil controle1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chlorophyll content of maize”
e0“Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants”
e1“An uncontaminated soil control was used”
Claim · model-written summary
Glyphosate in soil at the recommended dose and beyond caused significant damage to growth characteristics of bean.
Verbatim
t0“bean Phaseolus vulgaris L.”
e0“Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants”
e1“An uncontaminated soil control was used”
Claim · model-written summary
Glyphosate in soil at the recommended dose and beyond caused significant damage to nodulation in bean.
Verbatim
t0“bean Phaseolus vulgaris L.”
e0“Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants”
e1“An uncontaminated soil control was used”
Claim · model-written summary
Glyphosate in soil at the recommended dose and beyond caused significant damage to chlorophyll content of maize.
- Treatment
- glyphosatee0
- Outcome
- chlorophyll contente0
- Direction
- significant damagee0
- Comparator
- uncontaminated soil controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“chlorophyll content of maize”
e0“Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants”
e1“An uncontaminated soil control was used”
Claim · model-written summary
Glyphosate in soil at the recommended dose and beyond caused significant damage to chlorophyll content of bean.
Verbatim
t0“bean Phaseolus vulgaris L.”
e0“Already at the recommended dose and beyond, glyphosate caused significant damage to growth characteristics, nodulation and chlorophyll content in both plants”
e1“An uncontaminated soil control was used”
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