Abstract
Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia. It has potential as an emergency hay, pasture, or silage crop in the United States. Our objective was to determine the optimum N rate for single and multiple cut systems evaluating both dry matter (DM) yield and forage quality. Eight N‐rate studies (0, 50, 75, and 100 lb/acre) were conducted over 2 years (four as single‐cut systems and two each as 2‐ or 3‐cut systems). Yields ranged from 0.8 to 2.4, 3.3 to 3.6, and 4.8 to 4.9 ton/acre for the 1‐, 2‐ and 3‐cut systems, respectively. Nitrogen application increased yield at all but two sites which had manure or rotation nutrient inputs. Only at one site was there a yield benefit from applying > 50 lb N per acre. Crude protein levels of 1st cutting increased 3.3% units when 50 lb per acre was added with similar trends for 2nd and 3rd cuttings. For multiple‐cut systems, an application of 50 lb N per acre per cut reduced forage neutral detergent fiber (NDF) while NDF digestibility was not impacted. We conclude teff grown under New York growing conditions needs 50 lb N per acre per cut for maximum DM yield.
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Claims 8
Claim · model-written summary
Nitrogen application increased teff yield at all but two sites.
- Taxon
- Eragrostis tef
Eragrostis tefe0 - Treatment
- Nitrogen applicatione1
- Outcome
- yielde1
- Direction
- increasede1
- Qualifier
- at all but two sitese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e1“Nitrogen application increased yield at all but two sites which had manure or rotation nutrient inputs”
Claim · model-written summary
Only at one site did applying more than 50 lb N per acre give a yield benefit.
- Taxon
- Eragrostis tefEragrostis tefe0
- Treatment
- applying > 50 lb N per acree2
- Outcome
- yielde2
- Direction
- benefite2
- Qualifier
- Only at one sitee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e2“Only at one site was there a yield benefit from applying > 50 lb N per acre”
Claim · model-written summary
Crude protein of first-cutting teff increased by 3.3% units with 50 lb N per acre.
- Taxon
- Eragrostis tefEragrostis tefe0
- Organ / stage
- 1st cuttinge3
- Treatment
- 50 lb per acree3
- Outcome
- Crude protein levelse3
- Direction
- increasede3
- Value
- 3.3% unitse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e3“Crude protein levels of 1st cutting increased 3.3% units when 50 lb per acre was added with similar trends for 2nd and 3rd cuttings”
Claim · model-written summary
Crude protein of second- and third-cutting teff showed a similar increase with 50 lb N per acre.
- Taxon
- Eragrostis tefEragrostis tefe0
- Organ / stage
- 2nd and 3rd cuttingse3
- Treatment
- 50 lb per acree3
- Outcome
- Crude protein levelse3
- Direction
- increaseinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e3“Crude protein levels of 1st cutting increased 3.3% units when 50 lb per acre was added with similar trends for 2nd and 3rd cuttings”
Claim · model-written summary
Applying 50 lb N per acre per cut reduced forage NDF in multiple-cut teff systems.
- Taxon
- Eragrostis tefEragrostis tefe0
- Treatment
- 50 lb N per acre per cute4
- Outcome
- forage neutral detergent fiber (NDF)e4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e4“an application of 50 lb N per acre per cut reduced forage neutral detergent fiber (NDF) while NDF digestibility was not impacted”
Claim · model-written summary
Applying 50 lb N per acre per cut did not affect NDF digestibility of teff forage.
- Taxon
- Eragrostis tefEragrostis tefe0
- Treatment
- 50 lb N per acre per cute4
- Outcome
- NDF digestibilitye4
- Direction
- not impactede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e4“an application of 50 lb N per acre per cut reduced forage neutral detergent fiber (NDF) while NDF digestibility was not impacted”
Claim · model-written summary
Teff grown under New York conditions needs 50 lb N per acre per cut for maximum DM yield.
Verbatim
e6“We conclude teff grown under New York growing conditions needs 50 lb N per acre per cut for maximum DM yield”
Claim · model-written summary
Teff dry matter yields ranged from 0.8 to 4.9 ton/acre across cutting systems.
- Taxon
- Eragrostis tefEragrostis tefe0
- Outcome
- Yieldse5
- Value
- 0.8 to 2.4, 3.3 to 3.6, and 4.8 to 4.9 ton/acree5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Teff [ Eragrostis tef (Zucc.) Trotter]is an annual C 4 grass native to Ethiopia”
e5“Yields ranged from 0.8 to 2.4, 3.3 to 3.6, and 4.8 to 4.9 ton/acre”
The same questions in other papers
nitrogen · yield · Eragrostis tef (tef)Results agree
17 papers in the same direction as this paper
- positive
- positive
- positive
14 papers more in this group
See all 18 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.