Abstract
Nitrogen is essential to development of bulbing crops such as garlic ( Allium sativum L.). Little scientific research thus far has concentrated on the optimum timing and concentration of applied N fertilizer for garlic grown under conditions found in the northeastern United States. A trial in Freeville, N.Y., on a gravely loam soil used three levels of ammonium nitrate fertilizer, 0 kg·ha –1 , 52 kg·ha –1 sidedressed in mid-Apr., and 52 kg·ha –1 applied in mid-Apr. and early June 1995. The samples included a nonbolting (softneck) garlic and a bolting (topset) clone `Spanish Roja', both grown under wheat ( Triticum aestivum ) straw mulch. A separate trial in East Ithaca studied the same clones plus another topset, Merrifield Rocambole, on a sandy loam soil, using two levels, 0 and 52 kg·ha –1 , of ammonium nitrate applied in mid-April only. The East Ithaca trial also examined the efficacy of hairy vetch ( Vicia villosa Roth) as an alternate N source. Application of ammonium nitrate in April increased average bulb size of topset in Freeville >30%, and the average bulb size of softneck by 23%. Applying in April and June increased average bulb size of topset by 35% and of softneck by 26%. Earlier timing of the second application might enhance these increases. The East Ithaca trial found N fertilization increased average bulb size by 30% for `Spanish Roja', by 20% for Merrifield Rocambole, and 23% for softneck. Analysis of leaf tissue of garlic grown with vetch found that ammonium N increased by 22% to 28% in topset garlic and 14% to 26% in softneck. These results indicate that N fertilization, in the form of either chemical fertilizer or a legume, can benefit this crop in northeastern United States.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
April fertilizer increased topset bulb size by more than 30% in Freeville.
- Taxon
- Garlic
Allium sativumt0 - Material
- topsete0
- Treatment
- ammonium nitrate in Aprile0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- >30%e0
- Setting
- Freevillee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of ammonium nitrate in April increased average bulb size of topset in Freeville >30%”
t0“Garlic”
Claim · model-written summary
April fertilizer increased softneck bulb size by 23%.
- Taxon
- GarlicAllium sativumt0
- Material
- softnecke0
- Treatment
- ammonium nitrate in Aprile0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of ammonium nitrate in April increased average bulb size of topset in Freeville >30%, and the average bulb size of softneck by 23%”
t0“Garlic”
Claim · model-written summary
April and June fertilizer increased topset bulb size by 35%.
- Taxon
- GarlicAllium sativumt0
- Material
- topsete0
- Treatment
- Applying in April and Junee0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying in April and June increased average bulb size of topset by 35%”
t0“Garlic”
Claim · model-written summary
April and June fertilizer increased softneck bulb size by 26%.
- Taxon
- GarlicAllium sativumt0
- Material
- softnecke0
- Treatment
- Applying in April and Junee0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 26%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying in April and June increased average bulb size of topset by 35% and of softneck by 26%”
t0“Garlic”
Claim · model-written summary
East Ithaca nitrogen fertilization increased Spanish Roja bulb size by 30%.
- Taxon
- GarlicAllium sativumt0
- Material
- Spanish Rojae0
- Treatment
- N fertilizatione0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 30%e0
- Setting
- East Ithacae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The East Ithaca trial found N fertilization increased average bulb size by 30% for `Spanish Roja'”
t0“Garlic”
Claim · model-written summary
East Ithaca nitrogen fertilization increased Merrifield Rocambole bulb size by 20%.
- Taxon
- GarlicAllium sativumt0
- Material
- Merrifield Rocambolee0
- Treatment
- N fertilizatione0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization increased average bulb size by 30% for `Spanish Roja', by 20% for Merrifield Rocambole”
t0“Garlic”
Claim · model-written summary
East Ithaca nitrogen fertilization increased softneck bulb size by 23%.
- Taxon
- GarlicAllium sativumt0
- Material
- softnecke0
- Treatment
- N fertilizatione0
- Outcome
- average bulb sizee0
- Direction
- increasede0
- Value
- 23%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization increased average bulb size by 30% for `Spanish Roja', by 20% for Merrifield Rocambole, and 23% for softneck”
t0“Garlic”
Claim · model-written summary
With vetch, topset leaf ammonium N rose by 22% to 28%.
- Taxon
- garlicAllium sativume0
- Material
- topset garlice0
- Treatment
- vetche0
- Outcome
- ammonium Ne0
- Direction
- increasede0
- Value
- 22% to 28%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Analysis of leaf tissue of garlic grown with vetch found that ammonium N increased by 22% to 28% in topset garlic”
Claim · model-written summary
With vetch, softneck leaf ammonium N rose by 14% to 26%.
- Taxon
- GarlicAllium sativumt0
- Material
- softnecke0
- Outcome
- ammonium Ne0
- Direction
- increasede0
- Value
- 14% to 26%e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ammonium N increased by 22% to 28% in topset garlic and 14% to 26% in softneck”
t0“Garlic”
The same questions in other papers
fertilization · yield · Allium sativum (garlic)Results differ
154 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- negative
- negative
162 papers more in this group
See all 166 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.