Abstract
ABSTRACT Herb production in soilless culture systems (SCSs) requires precise composition of hydroponic nutrient solutions (HNSs) to optimise growth, yield and quality. This study aimed to investigate the effect of four nutrient solutions having different ion concentrations on the yield, quality and safety of basil grown in a New Growing System (NGS ® ) at two harvest times. The results showed that as ion concentration increased, yield and leaf fresh weight decreased, while total dry matter varied with harvest time. Lower levels of phosphorus and potassium in the HNS increased nitrate concentration in basil leaves, with higher nitrogen specifically increasing nitrate levels, and the second harvest showed the highest concentration in the N12P2K6 (nitrogen: 12 mmol · L −1 ; phosphorus: 2 mmol · L −1 ; potassium: 6 mmol · L −1 ) treatment. This study showed that SCS was successful in reducing the growth of microbial contamination, with the lowest levels of mould and yeast contamination detected in nutrient solutions containing N6P4K12. HNS affected the contents of essential oil compounds such as linalool (the highest amount at the lowest ion concentration) and (E)-α-bergamotene (the highest amount at the highest ion concentration). In conclusion, the quantity, quality and microbiological contamination of basil grown in NGS ® depend on the HNS used and harvesting time.
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Claims 9
Claim · model-written summary
Increasing ion concentration of the nutrient solution decreased yield and leaf fresh weight of basil.
- Taxon
- basil
Ocimum basilicume0 - Treatment
- ion concentratione1
- Outcome
- yield and leaf fresh weighte1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“as ion concentration increased, yield and leaf fresh weight decreased, while total dry matter varied with harvest time”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Total dry matter of basil varied with harvest time.
- Taxon
- basilOcimum basilicume0
- Outcome
- total dry mattere1
- Qualifier
- varied with harvest timee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“as ion concentration increased, yield and leaf fresh weight decreased, while total dry matter varied with harvest time”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Lower phosphorus and potassium levels in the nutrient solution increased nitrate concentration in basil leaves.
- Taxon
- basilOcimum basilicume0
- Organ / stage
- basil leavese1
- Treatment
- Lower levels of phosphorus and potassium in the HNSe1
- Outcome
- nitrate concentratione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Lower levels of phosphorus and potassium in the HNS increased nitrate concentration in basil leaves”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Higher nitrogen in the nutrient solution increased nitrate levels in basil.
- Taxon
- basilOcimum basilicume0
- Treatment
- higher nitrogene1
- Outcome
- nitrate levelse1
- Direction
- increasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with higher nitrogen specifically increasing nitrate levels, and the second harvest showed the highest concentration in the N12P2K6”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
The second harvest showed the highest nitrate concentration in basil grown with the N12P2K6 nutrient solution.
- Taxon
- basilOcimum basilicume0
- Treatment
- N12P2K6e1
- Outcome
- highest concentratione1
- Direction
- higheste1
- Qualifier
- second harveste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with higher nitrogen specifically increasing nitrate levels, and the second harvest showed the highest concentration in the N12P2K6”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Soilless culture systems reduced the growth of microbial contamination in basil.
- Taxon
- basilOcimum basilicume0
- Treatment
- SCSe1
- Outcome
- growth of microbial contaminatione1
- Direction
- reducinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study showed that SCS was successful in reducing the growth of microbial contamination”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Mould and yeast contamination was lowest in basil grown with the N6P4K12 nutrient solution.
- Taxon
- basilOcimum basilicume0
- Treatment
- nutrient solutions containing N6P4K12e1
- Outcome
- mould and yeast contaminatione1
- Direction
- loweste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with the lowest levels of mould and yeast contamination detected in nutrient solutions containing N6P4K12”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
Linalool content of basil essential oil was highest at the lowest ion concentration of the nutrient solution.
- Taxon
- basilOcimum basilicume0
- Treatment
- lowest ion concentratione1
- Outcome
- linaloole1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“linalool (the highest amount at the lowest ion concentration)”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
Claim · model-written summary
The essential oil compound (E)-alpha-bergamotene was highest at the highest ion concentration of the nutrient solution.
- Taxon
- basilOcimum basilicume0
- Treatment
- highest ion concentratione1
- Outcome
- (E)-α-bergamotenee1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“(E)-α-bergamotene (the highest amount at the highest ion concentration)”
e0“basil grown in a New Growing System (NGS ® ) at two harvest times”
The same questions in other papers
nitrogen · nutrient: content · Ocimum basilicum (basil)Positive and negative results
2 in the opposite direction
- positive
- positive
phosphorus · nutrient: content · Ocimum basilicum (basil)Positive and negative results
2 in the opposite direction
- positive
- 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.