Paper · 2023 · Journal of Essential Oil Bearing Plants

Effect of Plant Spacing and Nitrogen Levels on Growth, Yield and Essential Oil Content of Rosemary (Salvia rosmarinus Spenn) under Marginal Land Conditions

Bilkees Ayoob; Amerjeet Singh; Sajad Ahmed Gangoo; et al.

4
claims
6
verbatim quotes
4
citations
3
research areas
—
Not open access

Abstract

Salvia rosmarinus has the ability of environmental restoration as it prevents desertification and rapid soil erosion, this species has been assessed on marginal lands of Kashmir valley which was devoid of vegetation and in order to achieve maximum herbage and oil yield of rosemary, the optimization of plant spacing and nitrogen levels were very important factors that determine the physiology of the plants in the field. Four levels of spacing viz. 30×20 cm, 30×30 cm, 45×40 cm and 60×50 cm along with nitrogen viz. control, 175 kg N/ha, 225 kg N/ha and 275 kg N/ha were used to assess their effect on growth, yield and essential oil content of rosemary. The experiment consists of 16 treatment combinations which were replicated three times in a factorial randomized block design. Considering the results, rosemary plants transplanted at the widest spacing of 60×50 cm exhibited maximum growth, yield and quality attributes per plant except plant height. On a hectare basis, the growth, yield and quality attributes were found maximum at the closer spacing of 30×20 cm. Among nitrogen levels, rosemary plants nourished with a moderate amount of nitrogen (225 kg N/ha) attained maximum growth, yield and quality attributes. However dry leaf to stem ratio and essential oil content was not significantly influenced by plant spacing and nitrogen levels.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Widest spacing maximized per-plant growth, yield and quality except height.

Taxon
rosemarySalvia rosmarinuse0
Treatment
widest spacing of 60×50 cme0
Outcome
growth, yield and quality attributes per plante0
Direction
maximume0
Qualifier
except plant heighte0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Salvia rosmarinus
Salvia rosmarinus · TaxonMargalob · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“rosemary plants transplanted at the widest spacing of 60×50 cm exhibited maximum growth, yield and quality attributes per plant except plant height”

✓ located verbatim in the source · abstract, characters 809–956 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Closer 30×20 cm spacing maximized per-hectare growth, yield and quality.

Taxon
rosemarySalvia rosmarinuse0
Treatment
closer spacing of 30×20 cme1
Outcome
growth, yield and quality attributese1
Direction
maximume1
Qualifier
On a hectare basise1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Salvia rosmarinus
Salvia rosmarinus · TaxonMargalob · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“rosemary plants transplanted”

✓ located verbatim in the source · abstract, characters 809–837 · show in text ↑
e1

“On a hectare basis, the growth, yield and quality attributes were found maximum at the closer spacing of 30×20 cm”

✓ located verbatim in the source · abstract, characters 958–1071 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

225 kg N/ha maximized rosemary growth, yield and quality.

Taxon
rosemarySalvia rosmarinuse0
Treatment
225 kg N/hae0
Outcome
growth, yield and quality attributese0
Direction
maximume0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Salvia rosmarinus
Salvia rosmarinus · TaxonMargalob · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“rosemary plants nourished with a moderate amount of nitrogen (225 kg N/ha) attained maximum growth, yield and quality attributes”

✓ located verbatim in the source · abstract, characters 1096–1224 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Spacing and nitrogen did not significantly influence dry leaf to stem ratio or oil content.

Taxon
rosemarySalvia rosmarinuse0
Treatment
plant spacing and nitrogen levelse1
Outcome
dry leaf to stem ratio and essential oil contente1

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Salvia rosmarinus
Salvia rosmarinus · TaxonMargalob · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“rosemary plants nourished”

✓ located verbatim in the source · abstract, characters 1096–1121 · show in text ↑
e1

“dry leaf to stem ratio and essential oil content was not significantly influenced by plant spacing and nitrogen levels”

✓ located verbatim in the source · abstract, characters 1234–1352 · show in text ↑

nitrogen · quality: oil · Salvia rosmarinus (rosemary)Results differ

5 papers: 3 positive, 2 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

density · quality: oil · Salvia rosmarinus (rosemary)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

density · quality: general · Salvia rosmarinus (rosemary)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. no effect
See all 2 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.