Abstract
Abstract Potato (Solanum tuberosum L.) tuber yield and quality are impacted by irrigation and nitrogen (N) management. This study was conducted in the Pacific Northwest (PNW) region of United States to evaluate the effects of deficit irrigation (DI) and rates of pre-plant and in-season N applications on Ranger Russet and Umatilla Russet cultivars. In 2004, with Ranger Russet only, DI with 20% lower total irrigation for the entire growing period resulted in 28% tuber yield reduction compared to that of plants irrigated to replenishment full evapotranspiration (ET), i.e., full irrigation (FI). A subsequent study in 2006 and 2007 with DI (14% to 17% deficit) resulted in tuber yield reduction of 7% to 10% in both cultivars compared to full ET irrigation. Yield reduction in DI was generally attributed to reduction in large weight tubers, >0.227 kg/tuber, in both cultivars across three years. Petiole NO3-N concentrations were greater in plants grown under DI as compared to those of plants in full ET irrigation across all years and cultivars, particularly during tuber maturation stage. This is an important consideration as increased N availability during the late growing season adversely affects tuber quality. Petiole NO3-N concentrations increased with increased in-season N rates. In 2007, 112 kg·ha−1 in-season N resulted in petiole NO3-N concentrations below desirable concentrations across most of the growing season in both cultivars. This, in turn, contributed to a significant reduction in tuber yield as compared to the 224 kg·ha−1 in-season N rate. Continuous DI with 14% to 20% reduction in water as compared to irrigation to replenish full ET, begun three to four weeks after seedling emergence, had significant negative effects on tuber yields of both cultivars in high-production irrigated growing conditions. Application of N up to 112 kg ha−1 as pre-plant soil applied plus 224 kg ha−1 of in-season fertigation in five applications at two-week intervals beginning four weeks after seedling emergence appears to be adequate to support high yields of high-quality tubers. Keywords: Solanum tuberosumevapotranspirationnitrogen managementnitrate leachingpetiole nutrientsharvest indexsoil-water balance Acknowledgments This study was made possible by the generous support of AgriNorthwest Company, Kennewick, Wash., by providing: (i) field site, water, field equipment, and major tillage operations support during this project and (ii) petiole analyses support (Martin Moore). Grateful appreciation is also extended to Bill Boge, Marc Seymour, and several field helpers for their contributions to this experiment and preparation of this manuscript. Notes This article is not subject to US copyright law. 1 Effects of irrigation and nitrogen management on potato quality. Washington Potato Information Exchange. Pasco, WA. May 29, 1997.
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Claims 9
Claim · model-written summary
In 2004, a 20% irrigation deficit reduced Ranger Russet tuber yield by 28% versus full irrigation.
- Taxon
- Potato (Solanum tuberosum L.)
Solanum tuberosume1 - Material
- Ranger Russete0
- Treatment
- DI with 20% lower total irrigatione0
- Outcome
- tuber yielde0
- Direction
- reductione0
- Value
- 28%e0
- Comparator
- full irrigation (FI)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2004, with Ranger Russet only, DI with 20% lower total irrigation for the entire growing period resulted in 28% tuber yield reduction compared to that of plants irrigated to replenishment full evapotranspiration (ET), i.e., full irrigation (FI)”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
In 2006–2007, a 14%–17% deficit reduced tuber yield by 7%–10% in both cultivars.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Material
- both cultivarse0
- Treatment
- DI (14% to 17% deficit)e0
- Outcome
- tuber yielde0
- Direction
- reductione0
- Value
- 7% to 10%e0
- Comparator
- full ET irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A subsequent study in 2006 and 2007 with DI (14% to 17% deficit) resulted in tuber yield reduction of 7% to 10% in both cultivars compared to full ET irrigation”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
Deficit irrigation reduced large weight tubers across three years.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- DIe0
- Outcome
- large weight tuberse0
- Direction
- reductione0
- Qualifier
- >0.227 kg/tubere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reduction in DI was generally attributed to reduction in large weight tubers, >0.227 kg/tuber, in both cultivars across three years”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
Deficit irrigation raised petiole NO3-N concentrations compared with full irrigation.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Organ / stage
- tuber maturation stagee0
- Treatment
- DIe0
- Outcome
- Petiole NO3-N concentrationse0
- Direction
- greatere0
- Comparator
- full ET irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Petiole NO3-N concentrations were greater in plants grown under DI as compared to those of plants in full ET irrigation across all years and cultivars, particularly during tuber maturation stage”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
Petiole NO3-N concentrations increased with in-season nitrogen rate.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- in-season N ratese0
- Outcome
- Petiole NO3-N concentrationse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Petiole NO3-N concentrations increased with increased in-season N rates”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
In 2007, 112 kg·ha−1 in-season nitrogen left petiole NO3-N below desirable concentrations.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- 112 kg·ha−1 in-season Ne0
- Outcome
- petiole NO3-N concentrationse0
- Direction
- belowe0
- Comparator
- desirable concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 2007, 112 kg·ha−1 in-season N resulted in petiole NO3-N concentrations below desirable concentrations across most of the growing season in both cultivars”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
The 112 kg·ha−1 in-season nitrogen rate significantly reduced tuber yield versus 224 kg·ha−1.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- 112 kg·ha−1 in-season Ne2
- Outcome
- tuber yielde0
- Direction
- reductione0
- Comparator
- 224 kg·ha−1 in-season N ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This, in turn, contributed to a significant reduction in tuber yield as compared to the 224 kg·ha−1 in-season N rate”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
Continuous deficit irrigation had significant negative effects on tuber yields of both cultivars.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- Continuous DI with 14% to 20% reduction in watere0
- Outcome
- tuber yieldse0
- Direction
- negative effectse0
- Qualifier
- begun three to four weeks after seedling emergencee0
- Comparator
- irrigation to replenish full ETe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Continuous DI with 14% to 20% reduction in water as compared to irrigation to replenish full ET, begun three to four weeks after seedling emergence, had significant negative effects on tuber yields of both cultivars in high-production irrigated growing conditions”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
Claim · model-written summary
The authors suggest the stated pre-plant and in-season nitrogen schedule to support high-quality, high-yield tubers.
- Taxon
- Potato (Solanum tuberosum L.)Solanum tuberosume1
- Treatment
- Application of N up to 112 kg ha−1 as pre-plant soil applied plus 224 kg ha−1 of in-season fertigation in five applications at two-week intervals beginning four weeks after seedling emergencee0
- Outcome
- high yields of high-quality tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N up to 112 kg ha−1 as pre-plant soil applied plus 224 kg ha−1 of in-season fertigation in five applications at two-week intervals beginning four weeks after seedling emergence appears to be adequate to support high yields of high-quality tubers”
t0“Potato”
e1“Potato (Solanum tuberosum L.)”
e2“112 kg·ha−1 in-season N”
The same questions in other papers
irrigation · yield · Solanum tuberosum (potato)Results differ
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