Abstract
Growth of vinca [Catharanthus roseus (L.) G. Don ‘Grape Cooler'] was compared under several cultural conditions. Conditions investigated included two types of media (a peat‐lite mix and a mix containing 25% pine bark) and five types of nutrient charges in the peat‐lite media (sulfated micros, chelated micros, sulfated or chelated micros with pH adjustment to 5.5, and no charge). Nitrogen (N) source effect on growth was also investigated. Plants were grown at five different ratios of nitrate‐N to ammonium‐N. Greatest growth as measured by shoot length and shoot dry weight occurred in the peat‐lite media at either the sulfated micro or chelated micros adjusted to pH 5.5 and at the highest ratios of nitrate‐N to ammonium‐N. Root dry weight and growth were negatively affected by high levels of ammonium‐N in the fertilizer solution.
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Claims 3
Claim · model-written summary
Shoot length was greatest in peat-lite medium with sulfated micros or chelated micros adjusted to pH 5.5 and high nitrate-to-ammonium ratios.
- Treatment
- peat‐lite media at either the sulfated micro or chelated micros adjusted to pH 5.5 and at the highest ratios of nitrate‐N to ammonium‐Ne0
- Outcome
- shoot lengthe0
- Direction
- Greateste0
VincaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greatest growth as measured by shoot length and shoot dry weight occurred in the peat‐lite media at either the sulfated micro or chelated micros adjusted to pH 5.5 and at the highest ratios of nitrate‐N to ammonium‐N.”
t0“vinca”
Claim · model-written summary
Shoot dry weight was greatest in peat-lite medium with sulfated micros or chelated micros adjusted to pH 5.5 and high nitrate-to-ammonium ratios.
- Treatment
- peat‐lite media at either the sulfated micro or chelated micros adjusted to pH 5.5 and at the highest ratios of nitrate‐N to ammonium‐Ne0
- Outcome
- shoot dry weighte0
- Direction
- Greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greatest growth as measured by shoot length and shoot dry weight occurred in the peat‐lite media at either the sulfated micro or chelated micros adjusted to pH 5.5 and at the highest ratios of nitrate‐N to ammonium‐N.”
t0“vinca”
Claim · model-written summary
High ammonium nitrogen negatively affected vinca root dry weight and growth.
- Treatment
- high levels of ammonium‐N in the fertilizer solutione0
- Outcome
- Root dry weight and growthe0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root dry weight and growth were negatively affected by high levels of ammonium‐N in the fertilizer solution.”
t0“vinca”
The same questions in other papers
fertilization · growth · VincaPositive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
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1 paper more in this group
See all 5 papers →growing medium · growth · VincaResults agree
1 paper in the same direction as this paper
- positive
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.