Claim · model-written summary
Palmer amaranth had greater growth and biomass than common waterhemp or redroot pigweed.
- Taxon
- Palmer amaranthe1
- Outcome
- growth and biomasse1
- Direction
- greatere1
- Comparator
- common waterhemp or redroot pigweede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Verbatim
e1“Palmer amaranth had greater growth and biomass than either common waterhemp or redroot pigweed”
Title
Palmer Amaranth in South Dakota: Growth, Herbicidal Control, and Soybean Yield Loss
Brian Van De Stroet Open PRAIRIE (South Dakota State University) 2018
Other claims from this paper (17)
- Association Final volume of Palmer amaranth was greater at lower densities.
- Association Growth rates between sampling dates varied among planting dates.
- Association Final volume of Palmer amaranth was similar among planting dates.
- Association Common waterhemp and redroot pigweed had similar plant volumes and biomass.
- Association Common waterhemp and redroot pigweed plants were larger in 2015, possibly due to climatic differences between years.
- Association A pre-emergence application of S-metolachlor offered the best control of Palmer amaranth.
- Association A post-emergence application of dicamba or glufosinate offered the best control of Palmer amaranth.
- Association Glyphosate gave only partial control of Palmer amaranth.
- Association Mesotrione gave variable control of Palmer amaranth.
- Association Atrazine gave little control of Palmer amaranth as a pre- or post-emergence treatment.
- Association Thifensulfuron gave no control of Palmer amaranth.
- Association One Palmer amaranth plant per square metre caused an incremental soybean yield loss of 9% in 2016.
- Association Maximum soybean yield loss of 45% was seen at 15 Palmer amaranth plants per square metre.
- Association A maximum yield loss prediction of 35% was obtained for densities slightly lower and higher than the 45% peak.
- Association In 2017 no relationship between soybean yield loss and Palmer amaranth density or biomass could be determined.
- Recommendation More needs to be done to provide information to the public about Palmer amaranth.
- Observation Several survey respondents indicated possible infestations of Palmer amaranth.