Abstract
In this study, we evaluated the effects of soil incorporation of crotalaria as a green manure on the growth and yields of 'Seolhyang' strawberry and inorganic soil nitrogen levels in a greenhouse. Four different N treatments were used, as follows: zero N fertilizer (control), crotalaria, crotalaria with 50% urea, and 100% urea. The recommended N requirement (100% urea) for strawberry was 86 kg Nha -1 and 50% of the recommended N (50% urea) was 43 kg Nha -1 . Crotalaria was sowed on June 17 th , 2011 and cultivated for 37 days. The amount of N supply from soil incorporation of crotalaria was 104 kg Nha -1 . Strawberry was planted on September 9 th , 2011 and cultivated for 255 days after planting. The concentrations of soluble solids and acidity of strawberry fruits for the crotalaria treatment were higher than for the crotalaria with 50% urea and 100% urea treatments. On the other hand, the growth and yield of strawberry was the highest for the crotalaria with 50% urea and 100% urea treatments, followed by the crotalaria treatment, and the lowest for the control. Soil inorganic N concentration for the crotalaria treatment was continuously decreased to 24 mgkg -1 at the end of the growing season, while crotalaria with 50% urea and 100% urea treatments maintained an inorganic N concentration that ranged from 35 to 50 mgkg -1 . These results indicate that the amount of N supply from soil incorporation of crotalaria may not be enough because strawberry yield was lower than for other N treatments. Therefore, additional nitrogen, such as 50% urea after soil incorporation of crotalaria, is recommended.
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Claims 8
Claim · model-written summary
Crotalaria-only treatment gave higher soluble solids and acidity in strawberry fruits than crotalaria with urea treatments.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae1 - Material
- Seolhyange0
- Organ / stage
- fruitse1
- Treatment
- crotalariae1
- Outcome
- soluble solids and aciditye1
- Direction
- highere1
- Comparator
- crotalaria with 50% urea and 100% urea treatmentse1
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e1“The concentrations of soluble solids and acidity of strawberry fruits for the crotalaria treatment were higher than for the crotalaria with 50% urea and 100% urea treatments”
e0“we evaluated the effects of soil incorporation of crotalaria as a green manure on the growth and yields of 'Seolhyang' strawberry and inorganic soil nitrogen levels in a greenhouse”
Claim · model-written summary
Growth and yield of strawberry were highest with crotalaria plus 50% or 100% urea, followed by crotalaria alone.
- Taxon
- strawberryFragaria ×ananassae2
- Material
- Seolhyange0
- Treatment
- crotalaria with 50% ureae2
- Outcome
- growth and yielde2
- Direction
- higheste2
- Comparator
- crotalaria treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“the growth and yield of strawberry was the highest for the crotalaria with 50% urea and 100% urea treatments, followed by the crotalaria treatment, and the lowest for the control”
e0“we evaluated the effects of soil incorporation of crotalaria as a green manure on the growth and yields of 'Seolhyang' strawberry and inorganic soil nitrogen levels in a greenhouse”
Claim · model-written summary
Growth and yield of strawberry were lowest for the zero-N control.
- Taxon
- strawberryFragaria ×ananassae2
- Treatment
- zero N fertilizere3
- Outcome
- growth and yielde2
- Direction
- loweste2
- Comparator
- crotalaria with 50% urea and 100% urea treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“the growth and yield of strawberry was the highest for the crotalaria with 50% urea and 100% urea treatments, followed by the crotalaria treatment, and the lowest for the control”
e3“Four different N treatments were used, as follows: zero N fertilizer (control), crotalaria, crotalaria with 50% urea, and 100% urea”
Claim · model-written summary
Soil inorganic N under crotalaria alone decreased continuously to 24 mg/kg by the end of the growing season.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- crotalariae4
- Outcome
- Soil inorganic N concentratione4
- Direction
- continuously decreasede4
- Value
- 24 mgkg -1e4
- Qualifier
- at the end of the growing seasone4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Soil inorganic N concentration for the crotalaria treatment was continuously decreased to 24 mgkg -1 at the end of the growing season, while crotalaria with 50% urea and 100% urea treatments maintained an inorganic N concentration that ranged from 35 to 50 mgkg -1”
t0“Growth of Strawberry”
Claim · model-written summary
Soil inorganic N under crotalaria with urea treatments was maintained between 35 and 50 mg/kg.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- crotalaria with 50% urea and 100% urea treatmentse4
- Outcome
- inorganic N concentratione4
- Direction
- maintainede4
- Value
- 35 to 50 mgkg -1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Soil inorganic N concentration for the crotalaria treatment was continuously decreased to 24 mgkg -1 at the end of the growing season, while crotalaria with 50% urea and 100% urea treatments maintained an inorganic N concentration that ranged from 35 to 50 mgkg -1”
t0“Growth of Strawberry”
Claim · model-written summary
Strawberry yield with soil-incorporated crotalaria was lower than with other N treatments, so crotalaria N supply may not be enough.
- Taxon
- strawberryFragaria ×ananassae5
- Treatment
- soil incorporation of crotalariae5
- Outcome
- strawberry yielde5
- Direction
- lowere5
- Qualifier
- may not be enoughe5
- Comparator
- other N treatmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“These results indicate that the amount of N supply from soil incorporation of crotalaria may not be enough because strawberry yield was lower than for other N treatments”
Claim · model-written summary
The amount of N supplied by soil-incorporated crotalaria was 104 kg N/ha.
- Taxon
- StrawberryFragaria ×ananassat0
- Outcome
- amount of N supply from soil incorporation of crotalariae6
- Value
- 104 kg Nha -1e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The amount of N supply from soil incorporation of crotalaria was 104 kg Nha -1”
t0“Growth of Strawberry”
Claim · model-written summary
The authors recommend additional nitrogen, such as 50% urea, after soil incorporation of crotalaria.
- Taxon
- StrawberryFragaria ×ananassat0
- Outcome
- additional nitrogen, such as 50% urea after soil incorporation of crotalariae7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Therefore, additional nitrogen, such as 50% urea after soil incorporation of crotalaria, is recommended”
t0“Growth of Strawberry”
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