Abstract
Seed crops of carrots were grown in 1962, 1963 and 1964, on plots of a 24 N, P, K and farmyard manure factorial experiment. Significant seed yield responses were obtained to each of the fertilizers and to manure, as compared with the yields from the control plot with no manure or fertilizers.Except when a seed-borne disease caused by Stemphylium radicinum was present, the germination of the ungraded seed was well above the statutory declarable minimum of 60% and there were no significant differences in germination caused by the manurial treatments.The seed produced in 1963 and 1964 was of similar mean chemical composition to commercial seed and, although its composition was affected by the nitrogen and farmyard manure dressings, these variations in composition did not affect the yield of roots obtained from field sowings of the 1963 seed. The 1962 seed was exceptional in having a lower mean phosphorus concentration than commercial seed. The seed with the lowest phosphorus concentration was obtained from the plots which had received nitrogen but not phosphorus fertilizers, and the root yields from such seed were significantly lower than those from the seed containing higher concentrations of phosphorus.
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Claims 8
Claim · model-written summary
Fertilizers and manure increased carrot seed yield compared with a control plot with no manure or fertilizers.
- Taxon
- carrot
Daucus carotat0 - Treatment
- fertilizerse1
- Outcome
- seed yielde1
- Direction
- increaseinferrede1
- Comparator
- control plot with no manure or fertilizerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e1“Significant seed yield responses were obtained to each of the fertilizers and to manure, as compared with the yields from the control plot with no manure or fertilizers”
Claim · model-written summary
The germination of ungraded carrot seed was well above the statutory minimum of 60%, except where Stemphylium radicinum seed-borne disease was present.
- Taxon
- carrotDaucus carotat0
- Outcome
- germination of the ungraded seede2
- Value
- well above the statutory declarable minimum of 60%e2
- Qualifier
- Except when a seed-borne disease caused by Stemphylium radicinum was presente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e2“Except when a seed-borne disease caused by Stemphylium radicinum was present, the germination of the ungraded seed was well above the statutory declarable minimum of 60%”
Claim · model-written summary
Manurial treatments did not change germination of carrot seed.
- Taxon
- carrotDaucus carotat0
- Treatment
- manurial treatmentse3
- Outcome
- germinatione3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e3“there were no significant differences in germination caused by the manurial treatments”
Claim · model-written summary
Seed composition of carrot was affected by nitrogen and farmyard manure dressings.
- Taxon
- carrotDaucus carotat0
- Treatment
- nitrogen and farmyard manure dressingse4
- Outcome
- compositione4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e4“although its composition was affected by the nitrogen and farmyard manure dressings”
Claim · model-written summary
Variations in seed composition did not affect the root yield obtained from field sowings of the 1963 seed.
- Taxon
- carrotDaucus carotat0
- Material
- 1963 seede5
- Outcome
- yield of rootse5
- Direction
- no_changeinferrede5
- Setting
- field sowingse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e5“these variations in composition did not affect the yield of roots obtained from field sowings of the 1963 seed”
Claim · model-written summary
The 1962 carrot seed had a lower mean phosphorus concentration than commercial seed.
- Taxon
- carrotDaucus carotat0
- Material
- 1962 seede6
- Outcome
- mean phosphorus concentratione6
- Direction
- lowere6
- Comparator
- commercial seede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e6“The 1962 seed was exceptional in having a lower mean phosphorus concentration than commercial seed”
Claim · model-written summary
The seed with the lowest phosphorus concentration came from plots that received nitrogen but no phosphorus fertilizers.
- Taxon
- carrotDaucus carotat0
- Treatment
- nitrogen but not phosphorus fertilizerse7
- Outcome
- lowest phosphorus concentratione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e7“The seed with the lowest phosphorus concentration was obtained from the plots which had received nitrogen but not phosphorus fertilizers”
Claim · model-written summary
Root yields from seed with low phosphorus concentration were significantly lower than from seed with higher phosphorus concentrations.
- Taxon
- carrotDaucus carotat0
- Compound
- phosphoruse1
- Outcome
- root yieldse1
- Direction
- lowere1
- Comparator
- seed containing higher concentrations of phosphoruse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Carrot Seed”
e1“the root yields from such seed were significantly lower than those from the seed containing higher concentrations of phosphorus”
The same questions in other papers
fertilization · yield · Daucus carota (carrot)Results differ
107 papers in the same direction as this paper · 11 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- negative
- no effect
117 papers more in this group
See all 121 papers →fertilization · growth · Daucus carota (carrot)Positive and negative results
6 papers in the same direction as this paper · 70 in the opposite direction
- positive
- positive
- positive
73 papers more in this group
See all 77 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.