Abstract
The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003. In both years, seeds were sown on the first day of April, May, June, July, August and September. Three different nitrogen sources were used: farmyard (cattle) manure (100 tonnes·ha−1), calcium nitrate [Ca(NO3)2]-15.5% N (150 kg N·ha−1) and ammonium sulfate [(NH4)2SO4)]-21% N (150 kg N·ha−1). Yield, leaf color, dry matter, vitamin C and total glucosinolate content and nitrate accumulation was assessed. Growing months affected all the assessed parameters significantly both years, with the exception of hue angle in 2003, whereas nitrogen source only influenced yield and nitrate accumulation in 2003. In both years the highest yield was obtained in April, but vitamin C and total glucosinolate contents were higher during summer months, and leaves were slightly darker colored. Chemical fertilizers increased the yield compared to farmyard manure; however, they also increased nitrate accumulation slightly, without any significant difference between them. Nitrate accumulation never exceeded 300 mg kg−1 fresh weight (FW), which is well below the acceptable daily intake of 3.7 mg nitrate per kg−1 bodyweight set by European Commission's Scientific Committee on Food.
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Claims 7
Claim · model-written summary
Growing months significantly affected all assessed yield, quality and nitrate parameters of salad rocket in both years.
- Taxon
- Eruca sativa
Eruca vesicaria subsp. sativae0 - Treatment
- Growing monthse1
- Outcome
- all the assessed parameterse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e1“Growing months affected all the assessed parameters significantly both years”
Claim · model-written summary
The highest salad rocket yield was obtained in April in both years.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Outcome
- yielde2
- Direction
- higheste2
- Qualifier
- obtained in Aprile2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e2“In both years the highest yield was obtained in April, but vitamin C and total glucosinolate contents were higher during summer months, and leaves were slightly darker colored”
Claim · model-written summary
Vitamin C and total glucosinolate contents of salad rocket were higher during summer months.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Outcome
- vitamin C and total glucosinolate contentse2
- Direction
- highere2
- Qualifier
- during summer monthse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e2“In both years the highest yield was obtained in April, but vitamin C and total glucosinolate contents were higher during summer months, and leaves were slightly darker colored”
Claim · model-written summary
Salad rocket leaves were slightly darker colored in summer months.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Outcome
- leavese2
- Direction
- darker colorede2
- Qualifier
- slightlye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e2“In both years the highest yield was obtained in April, but vitamin C and total glucosinolate contents were higher during summer months, and leaves were slightly darker colored”
Claim · model-written summary
Chemical fertilizers increased salad rocket yield compared with farmyard manure.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Treatment
- Chemical fertilizerse3
- Outcome
- yielde3
- Direction
- increasede3
- Comparator
- farmyard manuree3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e3“Chemical fertilizers increased the yield compared to farmyard manure”
Claim · model-written summary
Chemical fertilizers slightly increased nitrate accumulation compared with farmyard manure, without a significant difference between them.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Treatment
- Chemical fertilizerse3
- Outcome
- nitrate accumulatione4
- Direction
- increasede4
- Qualifier
- without any significant difference between theme4
- Comparator
- farmyard manuree3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e3“Chemical fertilizers increased the yield compared to farmyard manure”
e4“however, they also increased nitrate accumulation slightly, without any significant difference between them”
Claim · model-written summary
Nitrate accumulation in salad rocket never exceeded 300 mg kg−1 fresh weight, well below the acceptable daily intake.
- Taxon
- Eruca sativaEruca vesicaria subsp. sativae0
- Outcome
- Nitrate accumulatione5
- Direction
- lowerinferrede5
- Value
- 300 mg kg−1 fresh weight (FW)e5
- Qualifier
- well below the acceptable daily intakee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of months of the year and nitrogen (N) sources on salad rocket (Eruca sativa Mill.) yield, quality, and nitrate accumulation was investigated during the years 2002 and 2003”
e5“Nitrate accumulation never exceeded 300 mg kg−1 fresh weight (FW), which is well below the acceptable daily intake of 3.7 mg nitrate per kg−1 bodyweight set by European Commission's Scientific Committee on Food”
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See all 11 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.