Abstract
Small size of cabbage heads around 2.0 kg, preferred by the fresh market, may be attained by the choice of cultivar suitable for such purpose of production as well as culture practice, including reasonable rate of fertilization. The aim of the study was to evaluate the impact of increasing plant population combined with differentiated dose of nitrogen on yield of cabbage, its structure and plant composition. White head cabbage ‘Kalorama F1’ cv. was planted in rows 45 cm apart and 50, 40, 35 or 30 cm within rows, which assured 44 000, 55 000, 63 000 and 74 000 plants per 1 ha, respectively. Nitrogen at the rates of 150 or 300 kg ha-1 was used in 3 equal doses supplied as preplant and top dressing fertilization. Data obtained in the trial indicate that the dose of 150 kg N ha-1 was a limiting factor for the increment of crop yield in higher than 44 000 plant population per 1 ha. In the case of application the dose of 300 kg N ha-1 plants grown in population 63 000 and 74 000 per hectare produced significantly higher yield of heads if compared to the treatment with 44 000 plants. Taking into account the yield size and its structure it can be assumed that spacing 45 cm between plant rows and 40 cm distance in the row, which assure 55 000 plants per 1 ha is the optimum for production of cabbage heads weighted 1.0–2.0 kg, that meet the consumers expectation in the fresh market. Close plant spacing appeared to be beneficial for dry matter, vitamin C and total sugars contents and for decrease of nitrates accumulation. The enhancement of N dose to 300 kg N ha-1 was beneficial for total yield of heads as well those weighted > 1.0 kg. The only change in plant composition under influence of heavy N fertilization was the increment of nitrates accumulation and decrease of Ca content in cabbage heads.
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Claims 9
Claim · model-written summary
150 kg N ha-1 limited yield increments above 44 000 plants per hectare.
- Taxon
- cabbage
Brassica oleracea var. capitatat0 - Treatment
- 150 kg N ha-1e0
- Outcome
- crop yielde0
- Direction
- limitinge0
- Qualifier
- higher than 44 000 plant population per 1 hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dose of 150 kg N ha-1 was a limiting factor for the increment of crop yield in higher than 44 000 plant population per 1 ha.”
t0“cabbage”
Claim · model-written summary
At 300 kg N ha-1, 63 000 plants per hectare yielded significantly more heads than 44 000 plants.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- 63 000e0
- Outcome
- yield of headse0
- Direction
- highere0
- Qualifier
- 300 kg N ha-1e0
- Comparator
- 44 000 plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of application the dose of 300 kg N ha-1 plants grown in population 63 000 and 74 000 per hectare produced significantly higher yield of heads if compared to the treatment with 44 000 plants.”
t0“cabbage”
Claim · model-written summary
At 300 kg N ha-1, 74 000 plants per hectare yielded significantly more heads than 44 000 plants.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- 74 000 per hectaree0
- Outcome
- yield of headse0
- Direction
- highere0
- Qualifier
- 300 kg N ha-1e0
- Comparator
- 44 000 plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of application the dose of 300 kg N ha-1 plants grown in population 63 000 and 74 000 per hectare produced significantly higher yield of heads if compared to the treatment with 44 000 plants.”
t0“cabbage”
Claim · model-written summary
The authors propose 45 by 40 cm spacing, giving 55 000 plants per hectare, as optimal for 1.0–2.0 kg market heads.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Outcome
- spacing 45 cm between plant rows and 40 cm distance in the rowe0
- Value
- 55 000 plants per 1 hae0
- Qualifier
- heads weighted 1.0–2.0 kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spacing 45 cm between plant rows and 40 cm distance in the row, which assure 55 000 plants per 1 ha is the optimum for production of cabbage heads weighted 1.0–2.0 kg”
Claim · model-written summary
Close spacing benefited dry matter, vitamin C and total sugar contents.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Close plant spacinge0
- Outcome
- dry matter, vitamin C and total sugars contentse0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Close plant spacing appeared to be beneficial for dry matter, vitamin C and total sugars contents and for decrease of nitrates accumulation.”
t0“cabbage”
Claim · model-written summary
Close spacing decreased nitrate accumulation.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- Close plant spacinge0
- Outcome
- nitrates accumulatione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Close plant spacing appeared to be beneficial for dry matter, vitamin C and total sugars contents and for decrease of nitrates accumulation.”
t0“cabbage”
Claim · model-written summary
Increasing N to 300 kg N ha-1 benefited total head yield and yield of heads above 1.0 kg.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- enhancement of N dose to 300 kg N ha-1e0
- Outcome
- total yield of heads as well those weighted > 1.0 kge0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhancement of N dose to 300 kg N ha-1 was beneficial for total yield of heads as well those weighted > 1.0 kg.”
t0“cabbage”
Claim · model-written summary
Heavy N fertilization increased nitrate accumulation in cabbage heads.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Organ / stage
- headse0
- Treatment
- heavy N fertilizatione0
- Outcome
- nitrates accumulatione0
- Direction
- incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The only change in plant composition under influence of heavy N fertilization was the increment of nitrates accumulation and decrease of Ca content in cabbage heads.”
Claim · model-written summary
Heavy N fertilization decreased Ca content in cabbage heads.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Organ / stage
- headse0
- Treatment
- heavy N fertilizatione0
- Outcome
- Ca contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The only change in plant composition under influence of heavy N fertilization was the increment of nitrates accumulation and decrease of Ca content in cabbage heads.”
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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.