Abstract
The technology that employs genetic modifications brought a significant increase in the utilization of glyphosate. Transgenic soybean has been suffering injury, even though it possesses a resistance mechanism to glyphosate. Currently, there are only a few studies on the dynamics of glyphosate in transgenic soybean planted in soils with different textures interacting with phosphorus concentrations. This study focused on assessing the effects of glyphosate in transgenic soybean plants on different types of soil and at different phosphorus levels. The experimental design was completely randomized, in factorial design: 2 x 6 x 3, that being 2 soil types, 6 doses of glyphosate and 3 levels of phosphorus, and four replications. Plants were cultivated for thirty days in pots with two types of soil, one being clayey (Red-Yellow Latosol) and the other sandy (Quartzarenic Neosol). They received one, two, and three times the maintenance dose of fertilization of phosphorus, corresponding to: 170, 250 and 330 kg of P2O5 ha-1 to QN, and 380, 460 and 540 kg P2O5 ha-1 to RYL, respectively. Glyphosate was applied at six different doses: 0, 1,200, 2,400, 12,000, 60,000 and 120,000 g ha-1 of active ingredient. Plant height, a and b chlorophyll, and shoot were lower for the plants that received lower doses of glyphosate, regardless of the type of soil. Greater availability of phosphorus and lower amount of glyphosate used in Quartzarenic Neosol soil provided for less phytointoxication symptoms in transgenic soybean.
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Claims 4
Claim · model-written summary
Lower glyphosate doses reduced plant height.
- Taxon
- transgenic soybean
Glycine maxt0 - Treatment
- lower doses of glyphosatee0
- Outcome
- Plant heighte0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, a and b chlorophyll, and shoot were lower for the plants that received lower doses of glyphosate, regardless of the type of soil.”
t0“transgenic soybean”
Claim · model-written summary
Lower glyphosate doses reduced chlorophyll a and b.
- Taxon
- transgenic soybeanGlycine maxt0
- Treatment
- lower doses of glyphosatee0
- Outcome
- a and b chlorophylle0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, a and b chlorophyll, and shoot were lower for the plants that received lower doses of glyphosate, regardless of the type of soil.”
t0“transgenic soybean”
Claim · model-written summary
Lower glyphosate doses reduced shoot.
- Taxon
- transgenic soybeanGlycine maxt0
- Treatment
- lower doses of glyphosatee0
- Outcome
- shoote0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, a and b chlorophyll, and shoot were lower for the plants that received lower doses of glyphosate, regardless of the type of soil.”
t0“transgenic soybean”
Claim · model-written summary
Greater phosphorus availability and less glyphosate in Quartzarenic Neosol reduced soybean phytointoxication.
- Taxon
- transgenic soybeanGlycine maxe0
- Treatment
- Greater availability of phosphorus and lower amount of glyphosatee0
- Outcome
- phytointoxication symptomse0
- Direction
- lesse0
- Setting
- Quartzarenic Neosol soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greater availability of phosphorus and lower amount of glyphosate used in Quartzarenic Neosol soil provided for less phytointoxication symptoms in transgenic soybean.”
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