Abstract
Yield and quality responses of `Market Prize' cabbage to five nitrogen sources and five rates of each source were measured in a replicated test at Clemson and Florence, SC in 1987 and 88. Soil nitrate solution, analyzed by the ion-electrode method, was monitored bi-weekly with maintenance levels kept throughout the growing season at or above threshold levels of 5, 10, 15, 20, and 30 ppm. The 15-0-14 (nitrate of soda/potash) gave higher total and early yields; higher levels of soluble solids and dry weights when compared to other N-sources of sodium-, ammonium-, potassium-, and calcium nitrate. Uptake, as measured by leaf tissue nitrate ion concentration, increased across soil solution levels up to 20 ppm.
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Claims 3
Claim · model-written summary
The 15-0-14 (nitrate of soda/potash) nitrogen source gave higher total and early cabbage yields than sodium-, ammonium-, potassium- and calcium nitrate.
- Taxon
- cabbage
Brassica oleracea var. capitatae2 - Treatment
- 15-0-14 (nitrate of soda/potash)e1
- Outcome
- total and early yieldse1
- Direction
- highere1
- Comparator
- other N-sources of sodium-, ammonium-, potassium-, and calcium nitratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The 15-0-14 (nitrate of soda/potash) gave higher total and early yields; higher levels of soluble solids and dry weights when compared to other N-sources of sodium-, ammonium-, potassium-, and calcium nitrate”
e2“responses of `Market Prize' cabbage”
Claim · model-written summary
The 15-0-14 (nitrate of soda/potash) nitrogen source gave higher soluble solids and dry weights in cabbage than the other nitrogen sources.
- Taxon
- cabbageBrassica oleracea var. capitatae2
- Treatment
- 15-0-14 (nitrate of soda/potash)e1
- Outcome
- soluble solids and dry weightse1
- Direction
- higher levelse1
- Comparator
- other N-sources of sodium-, ammonium-, potassium-, and calcium nitratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The 15-0-14 (nitrate of soda/potash) gave higher total and early yields; higher levels of soluble solids and dry weights when compared to other N-sources of sodium-, ammonium-, potassium-, and calcium nitrate”
e2“responses of `Market Prize' cabbage”
Claim · model-written summary
Cabbage leaf nitrate uptake increased across soil solution levels up to 20 ppm.
- Taxon
- cabbageBrassica oleracea var. capitatae2
- Treatment
- soil solution levelse3
- Outcome
- Uptakee3
- Direction
- increasede3
- Value
- up to 20 ppme3
- Qualifier
- as measured by leaf tissue nitrate ion concentratione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Uptake, as measured by leaf tissue nitrate ion concentration, increased across soil solution levels up to 20 ppm”
e2“responses of `Market Prize' cabbage”
The same questions in other papers
potassium · quality: sugar starch · Brassica oleracea (wild cabbage)Positive and negative results
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- no effect
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potassium · yield · Brassica oleracea (wild cabbage)Positive and negative results
29 papers in the same direction as this paper · 5 in the opposite direction
- negative
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31 papers more in this group
See all 35 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.