Abstract
Two on-farm field studies were conducted in 1996 and repeated in 1997 to determine the effects of soil amendments and scape (flower stalk) removal on yield, dry matter partitioning, and storage quality of hardneck garlic ( Allium sativum L.). One study site was on a loamy sand soil with low organic matter and fertility and the other site was on a sandy loam soil with high organic matter and fertility. Soil amendment treatments tested at both sites were: 1) no amendment, 2) composted manure, and 3) inorganic fertilizer according to soil test recommendations. A fourth treatment, dried, composted turkey-manure-based fertilizer, was included at the low organic matter site. Scapes were removed at the curled stage from plants in half of the harvest rows. Scapes from the remainder of the harvest row plants were allowed to mature until harvest. In 1997, bulbs from each treatment were stored at 0 to 3 °C or 19 to 21 °C for 6 months. Soil amendment treatments had no effect on total garlic bulb yield, dry mass partitioning, or stored bulb weight loss at the sandy loam, high organic matter site. Manure compost, fertilizer, and composted turkey manure soil amendments reduced the yield of smaller bulbs compared with the control at the loamy sand, low organic matter site. The proportion of bulbs >5 cm was highest with the manure compost treatment. At the low organic matter site, scape removal resulted in a 15% increase in bulb yield and an increase in bulb size compared with leaving scapes on until harvest ( P = 0.05). At the high organic matter site, scape removal increased bulb yield by 5% ( P = 0.10). Scape removal increased dry matter partitioning to the bulbs, but had no effect on total (scape + shoot + bulb) aboveground dry matter production. The increase in bulb dry mass when scapes were removed was offset by an increase in scape dry mass when scapes were left on. Bulb weight loss in storage was less at 0 to 3 °C than 19 to 21 °C. Soil amendments only affected bulb storage quality at the loamy sand, low soil organic matter site. The effect of scape removal on bulb weight loss was nonsignificant at either location.
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Claims 14
Claim · model-written summary
At the high organic matter site, soil amendments had no effect on yield, dry mass partitioning or stored bulb weight loss.
- Taxon
- garlic
Allium sativume0 - Treatment
- Soil amendment treatmentse0
- Outcome
- total garlic bulb yield, dry mass partitioning, or stored bulb weight losse0
- Direction
- no effecte0
- Setting
- sandy loam, high organic matter sitee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Soil amendment treatments had no effect on total garlic bulb yield, dry mass partitioning, or stored bulb weight loss at the sandy loam, high organic matter site”
Claim · model-written summary
Manure compost reduced smaller bulb yield at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- Manure composte0
- Outcome
- yield of smaller bulbse0
- Direction
- reducede0
- Comparator
- controle0
- Setting
- loamy sand, low organic matter sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Manure compost, fertilizer, and composted turkey manure soil amendments reduced the yield of smaller bulbs compared with the control at the loamy sand, low organic matter site”
Claim · model-written summary
fertilizer reduced smaller bulb yield at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- fertilizere0
- Outcome
- yield of smaller bulbse0
- Direction
- reducede0
- Comparator
- controle0
- Setting
- loamy sand, low organic matter sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Manure compost, fertilizer, and composted turkey manure soil amendments reduced the yield of smaller bulbs compared with the control at the loamy sand, low organic matter site”
Claim · model-written summary
composted turkey manure reduced smaller bulb yield at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- composted turkey manuree0
- Outcome
- yield of smaller bulbse0
- Direction
- reducede0
- Comparator
- controle0
- Setting
- loamy sand, low organic matter sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Manure compost, fertilizer, and composted turkey manure soil amendments reduced the yield of smaller bulbs compared with the control at the loamy sand, low organic matter site”
Claim · model-written summary
Manure compost gave the highest proportion of bulbs above 5 cm.
- Taxon
- GarlicAllium sativumt0
- Treatment
- manure compost treatmente0
- Outcome
- proportion of bulbs >5 cme0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“The proportion of bulbs >5 cm was highest with the manure compost treatment”
Claim · model-written summary
Scape removal increased bulb yield by 15% at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- scape removale0
- Outcome
- bulb yielde0
- Direction
- increasee0
- Value
- 15%e0
- Comparator
- leaving scapes on until harveste0
- Setting
- low organic matter sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“At the low organic matter site, scape removal resulted in a 15% increase in bulb yield and an increase in bulb size compared with leaving scapes on until harvest ( P = 0.05)”
Claim · model-written summary
Scape removal increased bulb size at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- scape removale0
- Outcome
- bulb sizee0
- Direction
- increasee0
- Comparator
- leaving scapes on until harveste0
- Setting
- low organic matter sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“At the low organic matter site, scape removal resulted in a 15% increase in bulb yield and an increase in bulb size compared with leaving scapes on until harvest ( P = 0.05)”
Claim · model-written summary
Scape removal increased bulb yield by 5% at the high organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- scape removale0
- Outcome
- bulb yielde0
- Direction
- increasede0
- Value
- 5%e0
- Setting
- high organic matter sitee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“At the high organic matter site, scape removal increased bulb yield by 5% ( P = 0.10)”
Claim · model-written summary
Scape removal increased dry matter partitioning to bulbs.
- Taxon
- GarlicAllium sativumt0
- Treatment
- Scape removale0
- Outcome
- dry matter partitioning to the bulbse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Scape removal increased dry matter partitioning to the bulbs”
Claim · model-written summary
Scape removal did not change total aboveground dry matter production.
- Taxon
- GarlicAllium sativumt0
- Treatment
- Scape removale0
- Outcome
- total (scape + shoot + bulb) aboveground dry matter productione0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Scape removal increased dry matter partitioning to the bulbs, but had no effect on total (scape + shoot + bulb) aboveground dry matter production”
Claim · model-written summary
With scapes retained, higher scape dry mass offset the bulb dry mass increase from removal.
- Taxon
- GarlicAllium sativumt0
- Outcome
- scape dry masse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“The increase in bulb dry mass when scapes were removed was offset by an increase in scape dry mass when scapes were left on”
Claim · model-written summary
Bulb storage weight loss was lower at 0 to 3 °C than at 19 to 21 °C.
- Taxon
- GarlicAllium sativumt0
- Treatment
- 0 to 3 °Ce0
- Outcome
- Bulb weight loss in storagee0
- Direction
- lesse0
- Comparator
- 19 to 21 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Bulb weight loss in storage was less at 0 to 3 °C than 19 to 21 °C”
Claim · model-written summary
Soil amendments affected bulb storage quality only at the low organic matter site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- Soil amendmentse0
- Outcome
- bulb storage qualitye0
- Setting
- loamy sand, low soil organic matter sitee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“Soil amendments only affected bulb storage quality at the loamy sand, low soil organic matter site”
Claim · model-written summary
Scape removal did not significantly affect bulb weight loss at either site.
- Taxon
- GarlicAllium sativumt0
- Treatment
- scape removale0
- Outcome
- bulb weight losse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hardneck Garlic”
e0“The effect of scape removal on bulb weight loss was nonsignificant at either location”
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See all 6 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.