Abstract
Abstract Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services and economic incentives when adopted as an oilseed cover crops in corn ( Zea mays L.)–soybean [ Glycine max (L.) Merr.] rotations. However, PC and WC establishment and yield in the northern Corn Belt and their subsequent impact on row crops are not well known. This study was conducted to determine the effects of interseeding dates (R4, R5, and R6; and R6, R7, and R8 development stages for corn and soybean, respectively) and cover crop species (PC, WC, and winter rye [ Secale cereale L.]) on seed yield and oil content of interseeded oilseeds (PC and WC) and relay soybean, and 3rd‐year corn grain yield and quality. Study sites were initiated near Ames, IA; Morris and Rosemount, MN; and Prosper, ND. Late interseeding of PC and WC resulted in greater oilseed yield. Overall yields of PC (218–880 kg ha –1 ) and WC (15–770 kg ha –1 ), averaged across interseeding dates, were low when interseeded in corn and soybean. The PC and WC reduced relay‐soybean grain yield by 13–32% and 13–42%, respectively. Corn grain yield and quality following relay soybean were not affected by the residual effects of oilseed cover crops. Based on the results of our study, we do not recommend relay cropping soybean with PC and WC in the upper Midwest.
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Claims 8
Claim · model-written summary
Late interseeding resulted in greater oilseed yield for field pennycress.
- Taxon
- Field pennycress
_-_Guelph%2C_Ontario_2020-04-12.jpg?width=60)
Thlaspi arvensee0 - Treatment
- Late interseedinge1
- Outcome
- oilseed yielde1
- Direction
- greatere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_Guelph%2C_Ontario_2020-04-12.jpg?width=500)
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e1“Late interseeding of PC and WC resulted in greater oilseed yield”
Claim · model-written summary
Late interseeding resulted in greater oilseed yield for winter camelina.
CamelinaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e1“Late interseeding of PC and WC resulted in greater oilseed yield”
Claim · model-written summary
Field pennycress yields were low when interseeded in corn and soybean, at 218–880 kg ha –1 averaged across interseeding dates.
- Taxon
- Field pennycressThlaspi arvensee0
- Treatment
- interseeded in corn and soybeane2
- Outcome
- yieldse2
- Direction
- lowe2
- Value
- 218–880 kg ha –1e2
- Qualifier
- averaged across interseeding datese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e2“Overall yields of PC (218–880 kg ha –1 ) and WC (15–770 kg ha –1 ), averaged across interseeding dates, were low when interseeded in corn and soybean”
Claim · model-written summary
Winter camelina yields were low when interseeded in corn and soybean, at 15–770 kg ha –1 averaged across interseeding dates.
- Treatment
- interseeded in corn and soybeane2
- Outcome
- yieldse2
- Direction
- lowe2
- Value
- 15–770 kg ha –1e2
- Qualifier
- averaged across interseeding datese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e2“Overall yields of PC (218–880 kg ha –1 ) and WC (15–770 kg ha –1 ), averaged across interseeding dates, were low when interseeded in corn and soybean”
Claim · model-written summary
Field pennycress reduced relay soybean grain yield by 13–32%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e3“The PC and WC reduced relay‐soybean grain yield by 13–32% and 13–42%, respectively”
Claim · model-written summary
Winter camelina reduced relay soybean grain yield by 13–42%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field pennycress ( Thlaspi arvense L.) (PC) and winter camelina [ Camelina sativa (L.) Crantz] (WC) have the potential to provide ecosystem services”
e3“The PC and WC reduced relay‐soybean grain yield by 13–32% and 13–42%, respectively”
Claim · model-written summary
Corn grain yield and quality following relay soybean were not affected by residual effects of the oilseed cover crops.
- Taxon
- Corn
Zea mays subsp. mayse4 - Treatment
- residual effects of oilseed cover cropse4
- Outcome
- grain yield and qualitye4
- Direction
- not affectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Corn grain yield and quality following relay soybean were not affected by the residual effects of oilseed cover crops”
Claim · model-written summary
The authors do not recommend relay cropping soybean with pennycress and winter camelina in the upper Midwest.
- Taxon
- soybean
Glycine maxe5 - Outcome
- relay cropping soybean with PC and WCe5
- Setting
- upper Midweste5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“we do not recommend relay cropping soybean with PC and WC in the upper Midwest”
The same questions in other papers
cover crop · quality: general · Zea mays (maize)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
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.