Abstract
Inappropriate and excessive irrigation and fertilization have led to the predominant decline of crop yields, and water and fertilizer use efficiency in intensive vegetable production systems in China. For many vegetables, fertigation can be applied daily according to the actual water and nutrient requirement of crops. A greenhouse study was therefore conducted to investigate the effect of daily fertigation on migration of water and salt in soil, and root growth and fruit yield of cucumber. The treatments included conventional interval fertigation, optimal interval fertigation and optimal daily fertigation. Generally, although soil under the treatment optimal interval fertigation received much lower fertilizers than soil under conventional interval fertigation, the treatment optimal interval fertigation did not statistically decrease the economic yield and fruit nutrition quality of cucumber when compare to conventional interval fertigation. In addition, the treatment optimal interval fertigation effectively avoided inorganic nitrogen accumulation in soil and significantly (P<0.05) increased the partial factor productivity of applied nitrogen by 88% and 209% in the early-spring and autumn-winter seasons, respectively, when compared to conventional interval fertigation. Although soils under the treatments optimal interval fertigation and optimal daily fertigation received the same amount of fertilizers, the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation. These results suggested that optimal daily fertigation is a beneficial practice for improving crop yield and the water and fertilizers use efficiency in solar greenhouse.
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Claims 11
Claim · model-written summary
Optimal interval fertigation did not statistically reduce economic yield.
- Taxon
- Cucumber
Cucumis sativust0 - Treatment
- optimal interval fertigatione0
- Outcome
- economic yielde0
- Direction
- did not statistically decreasee0
- Comparator
- conventional interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal interval fertigation did not statistically decrease the economic yield and fruit nutrition quality of cucumber when compare to conventional interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal interval fertigation did not statistically reduce fruit nutrition quality.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal interval fertigatione0
- Outcome
- fruit nutrition qualitye0
- Direction
- did not statistically decreasee0
- Comparator
- conventional interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal interval fertigation did not statistically decrease the economic yield and fruit nutrition quality of cucumber when compare to conventional interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal interval fertigation avoided soil inorganic nitrogen accumulation.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal interval fertigatione0
- Outcome
- inorganic nitrogen accumulation in soile0
- Direction
- avoidede0
- Comparator
- conventional interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal interval fertigation effectively avoided inorganic nitrogen accumulation in soil and significantly (P<0.05) increased the partial factor productivity of applied nitrogen by 88% and 209% in the early-spring and autumn-winter seasons, respectively, when compared to conventional interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal interval fertigation increased nitrogen partial factor productivity by 88% in early spring.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal interval fertigatione0
- Outcome
- partial factor productivity of applied nitrogene0
- Direction
- increasede0
- Value
- 88%e0
- Qualifier
- early-springe0
- Comparator
- conventional interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal interval fertigation effectively avoided inorganic nitrogen accumulation in soil and significantly (P<0.05) increased the partial factor productivity of applied nitrogen by 88% and 209% in the early-spring and autumn-winter seasons, respectively, when compared to conventional interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal interval fertigation increased nitrogen partial factor productivity by 209% in autumn winter.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal interval fertigatione0
- Outcome
- partial factor productivity of applied nitrogene0
- Direction
- increasede0
- Value
- 209%e0
- Qualifier
- autumn-winter seasonse0
- Comparator
- conventional interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal interval fertigation effectively avoided inorganic nitrogen accumulation in soil and significantly (P<0.05) increased the partial factor productivity of applied nitrogen by 88% and 209% in the early-spring and autumn-winter seasons, respectively, when compared to conventional interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation maintained stable surface soil water, conductivity and mineral nitrogen.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- relatively stable water, electrical conductivity and mineral nitrogen levels in surface soilse0
- Direction
- maintainede0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation promoted fine cucumber root growth.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- fine root (<1.5 mm diameter) growth of cucumbere0
- Direction
- promotede0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation increased economic yield by 6.2% in early spring.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- cucumber economic yielde0
- Direction
- increasede0
- Value
- 6.2%e0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation increased economic yield by 8.3% in autumn winter.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- cucumber economic yielde0
- Direction
- increasede0
- Value
- 8.3%e0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation increased nitrogen partial factor productivity by 55% in early spring.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- partial factor productivity of applied nitrogene0
- Direction
- increasede0
- Value
- 55%e0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
Claim · model-written summary
Optimal daily fertigation increased nitrogen partial factor productivity by 75% in autumn winter.
- Taxon
- CucumberCucumis sativust0
- Treatment
- optimal daily fertigatione0
- Outcome
- partial factor productivity of applied nitrogene0
- Direction
- increasede0
- Value
- 75%e0
- Comparator
- optimal interval fertigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treatment optimal daily fertigation maintained the relatively stable water, electrical conductivity and mineral nitrogen levels in surface soils, promoted fine root (<1.5 mm diameter) growth of cucumber, and eventually increased cucumber economic yield by 6.2% and 8.3% and partial factor productivity of applied nitrogen by 55% and 75% in the early-spring and autumn-winter seasons, respectively, when compared to the treatment optimal interval fertigation”
t0“Cucumber (Cucumis sativus L.)”
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