Abstract
Greenhouse horticultural crops are characterized by high levels of efficiency and productivity of irrigation water and nutrients applied. However, these indices may be affected by poor distribution uniformity of fertigation (DU). Different previous prospective studies show that there is a significant percentage of facilities with a low level of DU. However, there is no precise relationship between DU and the efficiency and productivity of water and fertilizers. This relationship may be affected by different factors, especially by the irrigation dose. The objective of this work was to determine the effect of the distribution uniformity of fertigation and the fertigation volume (FV) on the bio productive parameters and efficiency of water and nutrient use of the zucchini crop. The trial was developed in a greenhouse located in La Mojonera (Almería), on sanded soil. The greenhouse was equipped with an automated fertigation installation. The experimental design was randomized complete blocks with six treatments and three repetitions. The established treatment was a combination of two factors: distribution uniformity and fertigation volume. Three levels of DU were established: 100%, 75% and 50% approximately and two levels of fertigation volume: FV100% and FV70%. Volume of water and nutrients applied, soil matric potential (SMP), yield, biomass and efficiency in the water and nutrients use were determined. The maximum efficiency in the use of water and nutrients was obtained with a DU of 100% or 75% and a fertigation volume of FV70%, but this fertigation volume reduced the bio-productive parameters of the crop such as yield. The maximum yield and biomass were obtained with the volume of fertigation of 100% (FV100%), and with a DU of 100% or 75%. DU50% level reduced all bio-productive parameters, reducing yield by 45%, as well as the water use efficiency (WUE) and nutrient efficiency with any level of fertigation.
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Claims 8
Claim · model-written summary
Water use efficiency was maximum with DU 100% or 75% and FV70%.
- Taxon
- zucchini
Cucurbita pepo subsp. pepot0 - Treatment
- a DU of 100% or 75% and a fertigation volume of FV70%e0
- Outcome
- efficiency in the use of watere0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“The maximum efficiency in the use of water and nutrients was obtained with a DU of 100% or 75% and a fertigation volume of FV70%”
Claim · model-written summary
Nutrient use efficiency was maximum with DU 100% or 75% and FV70%.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- a DU of 100% or 75% and a fertigation volume of FV70%e0
- Outcome
- efficiency in the use of water and nutrientse0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“The maximum efficiency in the use of water and nutrients was obtained with a DU of 100% or 75% and a fertigation volume of FV70%”
Claim · model-written summary
FV70% reduced yield.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- this fertigation volumee0
- Outcome
- yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“this fertigation volume reduced the bio-productive parameters of the crop such as yield”
Claim · model-written summary
Yield was maximum with FV100% and DU 100% or 75%.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- the volume of fertigation of 100% (FV100%), and with a DU of 100% or 75%e0
- Outcome
- yielde0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“The maximum yield and biomass were obtained with the volume of fertigation of 100% (FV100%), and with a DU of 100% or 75%”
Claim · model-written summary
Biomass was maximum with FV100% and DU 100% or 75%.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- the volume of fertigation of 100% (FV100%), and with a DU of 100% or 75%e0
- Outcome
- biomasse0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“The maximum yield and biomass were obtained with the volume of fertigation of 100% (FV100%), and with a DU of 100% or 75%”
Claim · model-written summary
DU50% reduced yield by 45% at either fertigation level.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- DU50% levele0
- Outcome
- yielde0
- Direction
- reducinge0
- Value
- 45%e0
- Qualifier
- with any level of fertigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“DU50% level reduced all bio-productive parameters, reducing yield by 45%, as well as the water use efficiency (WUE) and nutrient efficiency with any level of fertigation”
Claim · model-written summary
DU50% reduced water use efficiency at either fertigation level.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- DU50% levele0
- Outcome
- water use efficiency (WUE)e0
- Direction
- reducede0
- Qualifier
- with any level of fertigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“DU50% level reduced all bio-productive parameters, reducing yield by 45%, as well as the water use efficiency (WUE) and nutrient efficiency with any level of fertigation”
Claim · model-written summary
DU50% reduced nutrient efficiency at either fertigation level.
- Taxon
- zucchiniCucurbita pepo subsp. pepot0
- Treatment
- DU50% levele0
- Outcome
- nutrient efficiencye0
- Direction
- reducede0
- Qualifier
- with any level of fertigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“zucchini”
e0“DU50% level reduced all bio-productive parameters, reducing yield by 45%, as well as the water use efficiency (WUE) and nutrient efficiency with any level of fertigation”
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