Abstract
Abstract Seeding rate affected stand establishment and survival, and row spacing influenced seedstalk height, herbage yield and protein content of crested wheatgrass ( Agropyron desertorum (Fisch. ex Link) Schult.) on range seedings in northern Colorado. In rows seeded in the spring of 1960, 1961, and 1962 at 33, 66, and 98 seeds/m, number of seedlings per m of row increased with seeding rate, but the percentage of seeds producing seedlings generally declined with increasing rate. Stand survival in 1967 (when the study was terminated) was significantly better at the 98‐seed rate than at the 33‐seed/m rate. Herbage yields averaged highest for row spacings of 30 and 46 cm; intermediate at spacings of 15 and 61 cm; and lowest for the 76‐cm spacing. However, yields varied widely among row spacings due to year of seeding, weather conditions and age of stand. Seedstalk height increased as row spacing became wider. Row spacing did not affect protein content of the 1963 harvest, but in 1964 the percent crude protein declined as row spacing increased.
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Claims 7
Claim · model-written summary
Seedling number per metre increased with seeding rate.
- Taxon
- Crested Wheatgrass
Agropyron cristatumt0 - Treatment
- seeding ratee0
- Outcome
- number of seedlings per m of rowe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“number of seedlings per m of row increased with seeding rate”
Claim · model-written summary
The percentage of seeds producing seedlings declined as seeding rate increased.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- increasing ratee0
- Outcome
- percentage of seeds producing seedlingse0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“the percentage of seeds producing seedlings generally declined with increasing rate”
Claim · model-written summary
Stand survival in 1967 was significantly better at 98 seeds per metre than at 33 seeds per metre.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- 98‐seed ratee0
- Outcome
- Stand survivale0
- Direction
- bettere0
- Comparator
- 33‐seed/m ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“Stand survival in 1967 (when the study was terminated) was significantly better at the 98‐seed rate than at the 33‐seed/m rate”
Claim · model-written summary
Herbage yield was highest at 30 and 46 cm spacing, intermediate at 15 and 61 cm, and lowest at 76 cm.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- row spacings of 30 and 46 cme0
- Outcome
- Herbage yieldse0
- Direction
- higheste0
- Comparator
- 76‐cm spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“Herbage yields averaged highest for row spacings of 30 and 46 cm; intermediate at spacings of 15 and 61 cm; and lowest for the 76‐cm spacing”
Claim · model-written summary
Seedstalk height increased with wider row spacing.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- row spacing became widere0
- Outcome
- Seedstalk heighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“Seedstalk height increased as row spacing became wider”
Claim · model-written summary
Row spacing did not affect protein content in the 1963 harvest.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- Row spacinge0
- Outcome
- protein contente0
- Direction
- did not affecte0
- Qualifier
- 1963 harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“Row spacing did not affect protein content of the 1963 harvest”
Claim · model-written summary
In 1964, crude protein percentage declined as row spacing increased.
- Taxon
- Crested WheatgrassAgropyron cristatumt0
- Treatment
- row spacing increasede0
- Outcome
- percent crude proteine0
- Direction
- declinede0
- Qualifier
- 1964e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Crested Wheatgrass”
e0“in 1964 the percent crude protein declined as row spacing increased”