Abstract
The purpose of this study was to investigate the growth, nitrogen (N) uptake and distribution, nitrate nitrogen (NO3(superscript -)-N) content of broccoli and cabbage as affected by different fertilizers, grown in soils with different fertilization histories. The field used in this study is located in Chi-san, at the Kaohsiung District Agricultural Improvement Station, in Southern Taiwan. The soils in this study were subjected to long-term studies, and were treated with organic fertilizer only (OF), chemical fertilizer only (CF), or a combination of organic and chemical fertilizers (IF), all of which were applied continuously. After transplantation, broccoli and cabbage plants were harvested at 75 and 70 days, respectively. The plants were separated into roots, leaves (wrapper leaves for cabbage), and heads. After drying to a constant weight at 65℃, the dry weight, nitrate N, total N, and insoluble N were determined, respectively. The results showed that the growth and N uptake of broccoli and cabbage from the OF-treated plot were the same or even higher than those from the CF and IF plots. The N use efficiency (NUE) for the OF plot was also higher. The NO3(superscript -)-N concentrations of both the entire broccoli and cabbage that received OF treatment were lower than those which received CF treatment. The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones; the reverse was true for cabbage. In conclusion, after 11 years of applying organic fertilizer and establishing the soil fertility, the crop yield of OF treatment, in which the application of N fertilizer was based on the mineralization capacity, can be as high as or higher than that of CF treatment, resulting in lower NO3(superscript -)-N concentrations in the plants.
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Claims 11
Claim · model-written summary
Broccoli growth under organic fertilizer was at least as high as under chemical and integrated fertilizer.
- Taxon
- broccoli
Brassica oleracea var. italicae0 - Treatment
- OF-treated plote0
- Outcome
- growthe0
- Direction
- same or even highere0
- Comparator
- CF and IF plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and N uptake of broccoli and cabbage from the OF-treated plot were the same or even higher than those from the CF and IF plots”
Claim · model-written summary
Cabbage growth under organic fertilizer was at least as high as under chemical and integrated fertilizer.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- OF-treated plote0
- Outcome
- growthe0
- Direction
- same or even highere0
- Comparator
- CF and IF plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and N uptake of broccoli and cabbage from the OF-treated plot were the same or even higher than those from the CF and IF plots”
Claim · model-written summary
Broccoli nitrogen uptake under organic fertilizer was at least as high as under chemical and integrated fertilizer.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- OF-treated plote0
- Outcome
- N uptakee0
- Direction
- same or even highere0
- Comparator
- CF and IF plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and N uptake of broccoli and cabbage from the OF-treated plot were the same or even higher than those from the CF and IF plots”
Claim · model-written summary
Cabbage nitrogen uptake under organic fertilizer was at least as high as under chemical and integrated fertilizer.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- OF-treated plote0
- Outcome
- N uptakee0
- Direction
- same or even highere0
- Comparator
- CF and IF plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and N uptake of broccoli and cabbage from the OF-treated plot were the same or even higher than those from the CF and IF plots”
Claim · model-written summary
Nitrogen use efficiency was higher for the organic fertilizer plot.
- Taxon
- broccoli and cabbageBrassica oleracea var. capitataBrassica oleracea var. italicat0
- Treatment
- OF plote0
- Outcome
- N use efficiency (NUE)e0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N use efficiency (NUE) for the OF plot was also higher”
t0“Broccoli and Cabbage”
Claim · model-written summary
Organic fertilizer lowered broccoli nitrate N concentration relative to chemical fertilizer.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- OF treatmente0
- Outcome
- NO3(superscript -)-N concentrationse0
- Direction
- lowere0
- Comparator
- CF treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO3(superscript -)-N concentrations of both the entire broccoli and cabbage that received OF treatment were lower than those which received CF treatment”
Claim · model-written summary
Organic fertilizer lowered cabbage nitrate N concentration relative to chemical fertilizer.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- OF treatmente0
- Outcome
- NO3(superscript -)-N concentrationse0
- Direction
- lowere0
- Comparator
- CF treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NO3(superscript -)-N concentrations of both the entire broccoli and cabbage that received OF treatment were lower than those which received CF treatment”
Claim · model-written summary
Organic fertilizer lowered total N concentration in broccoli relative to chemical fertilizer.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- organic fertilizer-treatede0
- Outcome
- total Ne1
- Direction
- lowere0
- Comparator
- chemical fertilizer-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones”
e1“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones”
Claim · model-written summary
Organic fertilizer lowered soluble N concentration in broccoli relative to chemical fertilizer.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- organic fertilizer-treatede0
- Outcome
- soluble N concentrationse0
- Direction
- lowere0
- Comparator
- chemical fertilizer-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones”
Claim · model-written summary
Organic fertilizer increased total N concentration in cabbage relative to chemical fertilizer.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- organic fertilizer-treatede0
- Outcome
- total Ne1
- Direction
- higherinferrede0
- Comparator
- chemical fertilizer-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones; the reverse was true for cabbage”
e1“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones”
Claim · model-written summary
Organic fertilizer increased soluble N concentration in cabbage relative to chemical fertilizer.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- organic fertilizer-treatede0
- Outcome
- soluble N concentrationse0
- Direction
- higherinferrede0
- Comparator
- chemical fertilizer-treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N and soluble N concentrations of organic fertilizer-treated broccoli were lower than those of the chemical fertilizer-treated ones; the reverse was true for cabbage”
The same questions in other papers
fertilization · nutrient: efficiency · Brassica oleracea (wild cabbage)Results agree
8 papers in the same direction as this paper
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See all 9 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.