Abstract
The presence of volunteer corn plants among soybeans, both resistant to glyphosate, has increased in recent years in Brazil. The objective of this study was to quantify the impact on the agronomic performance in RR soybeans by the presence of volunteer RR corn in field conditions. The experiment was conducted in Tiradentes do Sul (RS), 2018/19 harvest. The experimental design used in the experiment was randomized blocks with four replications: control in the clean (only soybean) and eight densities of volunteer corn in soybean crop with 1, 2, 3, 4, 5, 6, 7 and 8 corn plants m-2. In the physiological maturation of soybean, plant height, number of lateral branches, stem diameter, height of insertion of the first pod, number of pods plant-1 and grain yield were evaluated. All variables analyzed were negatively affected by the increase in the density of volunteer corn infestation, where the variables grain yield and number of pods plant-1 were the most affected, 63% and 81%, respectively. The presence of volunteer corn has a high capacity to reduce the yield of soybeans in the proportion of 500 kg ha-1 plant-1 of corn m-2, and even at low densities, it needs control.
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Claims 6
Claim · model-written summary
Increasing volunteer corn density negatively affected soybean plant height, number of lateral branches and stem diameter.
- Taxon
- soybeans
Glycine maxt0 - Treatment
- increase in the density of volunteer corn infestatione1
- Interactor
- volunteer corne1weed
- Outcome
- plant height, number of lateral branches, stem diametere3
- Direction
- negatively affectede1
- Comparator
- control in the clean (only soybean)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e1“All variables analyzed were negatively affected by the increase in the density of volunteer corn infestation”
e2“control in the clean (only soybean)”
e3“In the physiological maturation of soybean, plant height, number of lateral branches, stem diameter, height of insertion of the first pod, number of pods plant-1 and grain yield were evaluated”
Claim · model-written summary
Increasing volunteer corn density negatively affected the height of insertion of the first pod in soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- increase in the density of volunteer corn infestatione1
- Interactor
- volunteer corne1weed
- Outcome
- height of insertion of the first pode3
- Direction
- negatively affectede1
- Comparator
- control in the clean (only soybean)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e1“All variables analyzed were negatively affected by the increase in the density of volunteer corn infestation”
e2“control in the clean (only soybean)”
e3“In the physiological maturation of soybean, plant height, number of lateral branches, stem diameter, height of insertion of the first pod, number of pods plant-1 and grain yield were evaluated”
Claim · model-written summary
Volunteer corn most affected the number of pods per plant in soybean, reduced by 81%.
- Taxon
- soybeansGlycine maxt0
- Treatment
- increase in the density of volunteer corn infestatione1
- Interactor
- volunteer corne1weed
- Outcome
- number of pods plant-1e4
- Direction
- decreaseinferrede4
- Value
- 81%e4
- Comparator
- control in the clean (only soybean)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e1“All variables analyzed were negatively affected by the increase in the density of volunteer corn infestation”
e2“control in the clean (only soybean)”
e4“where the variables grain yield and number of pods plant-1 were the most affected, 63% and 81%, respectively”
Claim · model-written summary
Volunteer corn most affected soybean grain yield, reduced by 63%.
- Taxon
- soybeansGlycine maxt0
- Treatment
- increase in the density of volunteer corn infestatione1
- Interactor
- volunteer corne1weed
- Outcome
- grain yielde4
- Direction
- decreaseinferrede4
- Value
- 63%e4
- Comparator
- control in the clean (only soybean)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e1“All variables analyzed were negatively affected by the increase in the density of volunteer corn infestation”
e2“control in the clean (only soybean)”
e4“where the variables grain yield and number of pods plant-1 were the most affected, 63% and 81%, respectively”
Claim · model-written summary
Volunteer corn reduces soybean yield by 500 kg ha-1 per plant of corn per m2.
- Taxon
- soybeansGlycine maxt0
- Interactor
- volunteer corne5weed
- Outcome
- yield of soybeanse5
- Direction
- reducee5
- Value
- 500 kg ha-1 plant-1 of corn m-2e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e5“The presence of volunteer corn has a high capacity to reduce the yield of soybeans in the proportion of 500 kg ha-1 plant-1 of corn m-2”
Claim · model-written summary
Volunteer corn needs control even at low densities in soybean.
- Taxon
- soybeansGlycine maxt0
- Outcome
- needs controle6
- Qualifier
- even at low densitiese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Agronomic performance of soybeans”
e6“and even at low densities, it needs control”
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