Abstract
Abstract Switchgrass ( Panicum virgatum L.) is a warm‐season, native grass that may have value in humid areas for summer pasture. The objective of this research was to obtain additional information on its response to N and K fertilization. Soil cores of ‘Forestburg’ switchgrass were removed from the field before spring growth started and transplanted into plastic pots in a warm greenhouse (27 to 35 C). The soil was a Dodge silt loam (Typic Argiudoll) with low levels of N and K. Potted plants were fertilized with 0,50,100,200, and 400 kg/ha of N as NH 4 NO 3 in all combinations with 0 and 200 kg/ha of K as KCl. Plants were harvested 52 days later at near anthesis. Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble. Fertilization with N decreased significantly the percentage of K in the herbage, but did not influence the content of K in the herbage and the percentage of TNC in the stubble. Fertilization with K significantly increased stubble dry matter yields, but did not influence the yields of herbage. Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble. It was concluded that the vegetative growth of switchgrass is very responsive to N fertilization to the highest rate applied (400 kg/ha), but was not affected greatly by fertilization with K.
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Claims 18
Claim · model-written summary
N fertilization significantly increased dry matter yields (g/pot) of herbage.
- Taxon
- Switchgrass
Panicum virgatumt0 - Treatment
- Fertilization with Ne0
- Outcome
- dry matter yields (g/pot) of herbagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization significantly increased stem base tissue (stubble).
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- stem base tissue (stubble)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization significantly increased percentage of N in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- percentage and content (mg/pot) of N in the herbagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization significantly increased content (mg/pot) of N in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- content (mg/pot) of N in the herbagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization significantly increased content of total nonstructural carbohydrates (TNC) in the stubble.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- content of total nonstructural carbohydrates (TNC) in the stubblee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N significantly increased the dry matter yields (g/pot) of herbage and of stem base tissue (stubble), percentage and content (mg/pot) of N in the herbage, and content of total nonstructural carbohydrates (TNC) in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization significantly decreased herbage K percentage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- percentage of K in the herbagee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N decreased significantly the percentage of K in the herbage, but did not influence the content of K in the herbage and the percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization did not influence content of K in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- content of K in the herbagee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N decreased significantly the percentage of K in the herbage, but did not influence the content of K in the herbage and the percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
N fertilization did not influence percentage of TNC in the stubble.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ne0
- Outcome
- percentage of TNC in the stubblee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with N decreased significantly the percentage of K in the herbage, but did not influence the content of K in the herbage and the percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization significantly increased stubble dry matter yield.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- stubble dry matter yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased stubble dry matter yields, but did not influence the yields of herbage.”
t0“Switchgrass”
Claim · model-written summary
K fertilization did not influence herbage yield.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- yields of herbagee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased stubble dry matter yields, but did not influence the yields of herbage.”
t0“Switchgrass”
Claim · model-written summary
K fertilization significantly increased percentage of K in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- percentage and content of K in the herbagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization significantly increased content of K in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- content of K in the herbagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization significantly increased content of TNC in the stubble.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- content of TNC in the stubblee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization did not influence percentage of N in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- percentage and content of N in the herbagee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization did not influence content of N in the herbage.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- content of N in the herbagee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
K fertilization did not influence percentage of TNC in the stubble.
- Taxon
- SwitchgrassPanicum virgatumt0
- Treatment
- Fertilization with Ke0
- Outcome
- percentage of TNC in the stubblee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization with K significantly increased the percentage and content of K in the herbage and content of TNC in the stubble, but did not influence the percentage and content of N in the herbage or percentage of TNC in the stubble.”
t0“Switchgrass”
Claim · model-written summary
The authors concluded that switchgrass vegetative growth responds strongly to N up to 400 kg/ha.
- Taxon
- switchgrassPanicum virgatume0
- Treatment
- N fertilizatione0
- Outcome
- vegetative growthe0
- Direction
- very responsivee0
- Value
- 400 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that the vegetative growth of switchgrass is very responsive to N fertilization to the highest rate applied (400 kg/ha), but was not affected greatly by fertilization with K.”
Claim · model-written summary
The authors concluded that K fertilization has little effect on switchgrass vegetative growth.
- Taxon
- switchgrassPanicum virgatume0
- Treatment
- fertilization with Ke0
- Outcome
- vegetative growthe0
- Direction
- not affected greatlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that the vegetative growth of switchgrass is very responsive to N fertilization to the highest rate applied (400 kg/ha), but was not affected greatly by fertilization with K.”
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- negative
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fertilization · growth · Panicum virgatum (switchgrass)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
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See all 12 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.