Abstract
Vegetable response to fertilizer treatments of a well decomposed organic soil over a 4-yr period showed potassium as the primary nutrient to be first in short supply for celery (Apium graveolens L.), carrot (Daucus carota L.) and lettuce (Lactuca sativa L.). Onion (Allium cepa L.) yields were depressed on the addition of N, P and K in the 1st yr of the experiment, and subsequently did not respond significantly. Only after 4 yr of cropping were there significant differences between plots of celery, carrot and onion receiving no fertilizers and those receiving N and P annually. After 4 yr cropping without the addition of commercial fertilizers, carrot was the crop showing the greatest reduction in yield. With respect to dry matter produced that normally would be left on the land as crop residues, the average for celery, carrot and lettuce was 3.66, 3.60 and 2.03 t/ha respectively. The percentages of the total N, P and K taken up by whole carrot plants and removed in the harvested portion of the crop were 53.3, 51.1 and 51.8%, respectively. Comparable figures for celery were 49.3, 47.0 and 49.5%, respectively; and for lettuce 34.9, 47.9 and 26.7%, respectively. Data are also provided for the total uptake and removal of Ca, Mg, Mn, Zn, Cu and B by carrot, celery and lettuce.
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Claims 12
Claim · model-written summary
Potassium was the first limiting nutrient for celery.
- Taxon
- celery
%2C_Elswick%2C_Northumberland_4.jpg?width=60)
Apium graveolens Dulce Groupe0 - Outcome
- primary nutrient to be first in short supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
%2C_Elswick%2C_Northumberland_4.jpg?width=500)
Verbatim
e0“potassium as the primary nutrient to be first in short supply for celery (Apium graveolens L.), carrot (Daucus carota L.) and lettuce (Lactuca sativa L.)”
Claim · model-written summary
Potassium was the first limiting nutrient for carrot.
- Taxon
- carrot
Daucus carotae0 - Outcome
- primary nutrient to be first in short supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium as the primary nutrient to be first in short supply for celery (Apium graveolens L.), carrot (Daucus carota L.) and lettuce (Lactuca sativa L.)”
Claim · model-written summary
Potassium was the first limiting nutrient for lettuce.
- Taxon
- lettuce
Lactuca sativae0 - Outcome
- primary nutrient to be first in short supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium as the primary nutrient to be first in short supply for celery (Apium graveolens L.), carrot (Daucus carota L.) and lettuce (Lactuca sativa L.)”
Claim · model-written summary
N, P and K addition depressed onion yield in the first year.
- Taxon
- Onion
Allium cepae0 - Treatment
- addition of N, P and Ke0
- Outcome
- yieldse0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Onion (Allium cepa L.) yields were depressed on the addition of N, P and K in the 1st yr of the experiment”
Claim · model-written summary
Onion yield did not respond significantly to fertilization in subsequent years.
Not reportedTaxonTreatmentComparator
Verbatim
e0“and subsequently did not respond significantly”
Claim · model-written summary
After four years, celery plots without fertilizer differed significantly from plots receiving N and P.
- Taxon
- celeryApium graveolens Dulce Groupe0
- Treatment
- N and P annuallye0
- Outcome
- significant differencese0
- Comparator
- no fertilizerse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 4 yr of cropping were there significant differences between plots of celery, carrot and onion receiving no fertilizers and those receiving N and P annually”
Claim · model-written summary
After four years, carrot plots without fertilizer differed significantly from plots receiving N and P.
- Taxon
- carrotDaucus carotae0
- Treatment
- N and P annuallye0
- Outcome
- significant differencese0
- Comparator
- no fertilizerse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 4 yr of cropping were there significant differences between plots of celery, carrot and onion receiving no fertilizers and those receiving N and P annually”
Claim · model-written summary
After four years, onion plots without fertilizer differed significantly from plots receiving N and P.
- Taxon
- onionAllium cepae0
- Treatment
- N and P annuallye0
- Outcome
- significant differencese0
- Comparator
- no fertilizerse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 4 yr of cropping were there significant differences between plots of celery, carrot and onion receiving no fertilizers and those receiving N and P annually”
Claim · model-written summary
Carrot had the greatest yield reduction after four years without commercial fertilizer.
- Taxon
- carrotDaucus carotae0
- Treatment
- without the addition of commercial fertilizerse0
- Outcome
- yielde0
- Direction
- greatest reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 4 yr cropping without the addition of commercial fertilizers, carrot was the crop showing the greatest reduction in yield”
Claim · model-written summary
Celery produced 3.66 t/ha of dry matter normally left as crop residues.
- Taxon
- celeryApium graveolens Dulce Groupe0
- Outcome
- averagee0
- Value
- 3.66e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average for celery, carrot and lettuce was 3.66, 3.60 and 2.03 t/ha respectively”
Claim · model-written summary
Carrot produced 3.60 t/ha of dry matter normally left as crop residues.
- Taxon
- carrotDaucus carotae0
- Outcome
- averagee0
- Value
- 3.60e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average for celery, carrot and lettuce was 3.66, 3.60 and 2.03 t/ha respectively”
Claim · model-written summary
Lettuce produced 2.03 t/ha of dry matter normally left as crop residues.
- Taxon
- lettuceLactuca sativae0
- Outcome
- averagee0
- Value
- 2.03 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average for celery, carrot and lettuce was 3.66, 3.60 and 2.03 t/ha respectively”
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See all 184 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.