Abstract
The standard growth-stage-based fertigation schedule has provided the weekly supply amount of fertilizer considering the expecting yield with no regard of soil nutrient status. The study aimed to examine if fertigation with nitrogen applied at a standard rate results in the best cucumber yield in two greenhouses with different soil nutrient levels, i.e. optimal and high. We investigated the nitrogen (N) uptake pattern of cucumbers with the different nitrogen supply levels which included half the standard rate (N0.5), the standard rate (N1) and double the standard rate (N2). In year 2020, the N1 amendment resulted in highest yield in the soil with optimal nutrient level, however, lower N0.5 resulted in higher yield in the high-nutrient soil. In year 2021, there was no statistical difference in the yield by different nitrogen supply levels in both soils with optimal and high nutrient level. Soil NO 3 -N remained low in the low nutrient soil regardless of the amount of N supplied, but soil NO 3 -N was high in the high nutrient soil supplied with N2. The Partial Factor Productivity of Nitrogen (PFPN) was highest in the N0.5 and it decreased as N supply increased in the optimal and high nutrient soil. In conclusion, a precise fertigation schedule is needed to be set with the consideration of the soil nutrient status.
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Claims 8
Claim · model-written summary
Standard N gave highest cucumber yield in optimal soil in 2020.
- Taxon
- cucumbers
Cucumis sativust0 - Treatment
- N1 amendmente0
- Outcome
- yielde0
- Direction
- higheste0
- Setting
- soil with optimal nutrient levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In year 2020, the N1 amendment resulted in highest yield in the soil with optimal nutrient level, however, lower N0.5 resulted in higher yield in the high-nutrient soil.”
t0“Cucumbers”
Claim · model-written summary
Half-standard N gave higher yield in high-nutrient soil in 2020.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N0.5e0
- Outcome
- yielde0
- Direction
- highere0
- Setting
- high-nutrient soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In year 2020, the N1 amendment resulted in highest yield in the soil with optimal nutrient level, however, lower N0.5 resulted in higher yield in the high-nutrient soil.”
t0“Cucumbers”
Claim · model-written summary
Nitrogen rates did not significantly differ in yield in either soil in 2021.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- different nitrogen supply levelse0
- Outcome
- yielde0
- Direction
- no statistical differencee0
- Setting
- soils with optimal and high nutrient levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In year 2021, there was no statistical difference in the yield by different nitrogen supply levels in both soils with optimal and high nutrient level.”
t0“Cucumbers”
Claim · model-written summary
Soil nitrate N stayed low in low-nutrient soil regardless of N supply.
- Taxon
- cucumbersCucumis sativust0
- Outcome
- Soil NO 3 -Ne0
- Direction
- remained lowe0
- Qualifier
- regardless of the amount of N suppliede0
- Setting
- low nutrient soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil NO 3 -N remained low in the low nutrient soil regardless of the amount of N supplied, but soil NO 3 -N was high in the high nutrient soil supplied with N2.”
t0“Cucumbers”
Claim · model-written summary
Soil nitrate N was high in high-nutrient soil supplied with N2.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N2e0
- Outcome
- Soil NO 3 -Ne0
- Direction
- highe0
- Setting
- high nutrient soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil NO 3 -N remained low in the low nutrient soil regardless of the amount of N supplied, but soil NO 3 -N was high in the high nutrient soil supplied with N2.”
t0“Cucumbers”
Claim · model-written summary
Partial factor productivity was highest at N0.5.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N0.5e0
- Outcome
- Partial Factor Productivity of Nitrogen (PFPN)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Partial Factor Productivity of Nitrogen (PFPN) was highest in the N0.5 and it decreased as N supply increased in the optimal and high nutrient soil.”
t0“Cucumbers”
Claim · model-written summary
Partial factor productivity decreased as N supply increased in both soils.
- Taxon
- cucumbersCucumis sativust0
- Treatment
- N supplye0
- Outcome
- Partial Factor Productivity of Nitrogen (PFPN)e0
- Direction
- decreasede0
- Setting
- optimal and high nutrient soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Partial Factor Productivity of Nitrogen (PFPN) was highest in the N0.5 and it decreased as N supply increased in the optimal and high nutrient soil.”
t0“Cucumbers”
Claim · model-written summary
The authors recommend tailoring fertigation schedules to soil nutrient status.
- Taxon
- cucumbersCucumis sativust0
- Outcome
- a precise fertigation schedule is needed to be set with the consideration of the soil nutrient statuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In conclusion, a precise fertigation schedule is needed to be set with the consideration of the soil nutrient status.”
t0“Cucumbers”
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See all 34 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.