Abstract
This study evaluated weed infestation and health of the soybean crop grown in crop rotation (CR) and monoculture (CM) under conventional tillage (CT) and no-tillage (NT) conditions. The research proved that growing soybean in monoculture and under no-tillage conditions increases weed infestation and infection of soybean with fungal diseases. In these treatments, increased numbers of most of the dominant species were also found. A significantly higher percentage of monocotyledonous species and a much lower percentage of dicotyledonous ones in total weed dry weight were shown in the CR treatment relative to CM and in the NT system compared to CT. The biodiversity of the weed community was similar in monoculture and crop rotation, and slightly greater in the NT system in comparison with CT conditions. In both tillage systems, Amaranthus retroflexus was the weed species that most infested the soybean crop. In soybean grown after itself, Amaranthus retroflexus was the weed that occurred in the greatest numbers, while, in crop rotation, this was Echinochloa crus-galli. In all years of the study, soybean was infected with Septoria glycines to the highest degree, which was followed by Cercospora sojina, whereas infection with Ascochyta sp. was the lowest. Weather conditions in individual years of the study were proven to affect weed infestation and infection of soybean with fungal diseases. The study results prove that cropping systems and tillage systems significantly affect weed infestation and health of the soybean crop.
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Claims 4
Claim · model-written summary
Soybean monoculture increased weed infestation and fungal infection.
- Taxon
- soybean
Glycine maxe0 - Treatment
- monoculturee0
- Outcome
- weed infestation and infection of soybean with fungal diseasese0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing soybean in monoculture and under no-tillage conditions increases weed infestation and infection of soybean with fungal diseases.”
Claim · model-written summary
No-tillage increased soybean weed infestation and fungal infection.
- Taxon
- soybeanGlycine maxe0
- Treatment
- no-tillagee0
- Outcome
- weed infestation and infection of soybean with fungal diseasese0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing soybean in monoculture and under no-tillage conditions increases weed infestation and infection of soybean with fungal diseases.”
Claim · model-written summary
Monocotyledonous weeds made up a higher percentage of weed dry weight in rotation than monoculture.
- Treatment
- CR treatmente0
- Outcome
- percentage of monocotyledonous speciese0
- Direction
- highere0
- Comparator
- CMe0
Not reportedTaxon
Verbatim
e0“A significantly higher percentage of monocotyledonous species and a much lower percentage of dicotyledonous ones in total weed dry weight were shown in the CR treatment relative to CM”
Claim · model-written summary
Amaranthus retroflexus was the principal weed infesting soybean in both tillage systems.
- Taxon
- soybeanGlycine maxe0
- Interactor
- Amaranthus retroflexus
Amaranthus retroflexuse0weed - Outcome
- most infestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both tillage systems, Amaranthus retroflexus was the weed species that most infested the soybean crop.”
The same questions in other papers
rotation · weed · Glycine max (soybean)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 papers →tillage · weed · Glycine max (soybean)Positive and negative results
24 papers in the same direction as this paper · 19 in the opposite direction
- negative
- negative
- negative
40 papers more in this group
See all 44 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.