Abstract
Irrigation parameters(reference crop evapotranspiration, actual plant water use, amount ofirrigation water, water use efficiency, irrigation water use efficiency, plantwater consumption coefficient, variations in soil moisture based on plant waterconsumption-amount of irrigation water) and yield parameters (seed yield,1000-kernel weight, harvest index) were investigated for soybean grown inHarran Plain under conventional every-furrow and alternate-furrow irrigationmanagement systems, three different compaction levels (control withoutcompaction, low compaction, high compaction) and three different nitrogenlevels (6, 9, 12 kg da-1). Experiments were carried out during 2006and 2007 cropping seasons in Şanlıurfa, Turkey in split-split plotsexperimental design with 3 replications. Irrigation program was created byKanSched simulation model. The amount of applied irrigation water inconventional and alternate furrow systems in 2006 and 2007 were measured as435.61 and 291.59 mm, and 429.51 and 271.72 mm, respectively. ET valuesdecreased with increasing compaction levels. The highest ET value (568 mm) wasobserved in non-compacted control treatment and the lowest value (240 mm) inhigh-compaction treatment. Irrigation water use efficiency increased withdecreased irrigation water and the values were higher than water useefficiencies. While the highest yield (94.78 kg da-1) was observed in controltreatment of the year 2006, conventional furrow system had the highest yield(209.93 kg da-1) in the year 2007. While effects of compaction and irrigationon harvest index were insignificant, nitrogen doses were found to besignificant. Results revealed that KanSched irrigation model could be used forirrigation scheduling but plant coefficients to be used in the model should bedetermined properly based on climate conditions. Negative impacts of soilcompaction in agricultural fields due to traffic and various other reasons canbe eliminated with proper irrigation and fertilization implementations.However, yield losses at high-compaction levels may reach up to 45%.
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Claims 13
Claim · model-written summary
The highest seed yield (94.78 kg da-1) was observed in the control treatment in 2006.
- Taxon
- Soybean
Glycine maxt0 - Outcome
- yielde0
- Direction
- higheste0
- Value
- 94.78 kg da-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“While the highest yield (94.78 kg da-1) was observed in control treatment of the year 2006”
Claim · model-written summary
The conventional furrow system had the highest yield (209.93 kg da-1) in 2007.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- conventional furrow systeme1
- Outcome
- yielde1
- Direction
- higheste1
- Value
- 209.93 kg da-1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“conventional furrow system had the highest yield (209.93 kg da-1) in the year 2007”
Claim · model-written summary
Compaction had no significant effect on harvest index.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- compactione2
- Outcome
- harvest indexe3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e2“effects of compaction”
e3“harvest index were insignificant, nitrogen doses were found to”
Claim · model-written summary
Nitrogen doses had a significant effect on harvest index.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- nitrogen dosese3
- Outcome
- harvest indexe3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e3“harvest index were insignificant, nitrogen doses were found to”
Claim · model-written summary
Evapotranspiration values decreased with increasing soil compaction levels.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- increasing compaction levelse5
- Outcome
- ET valuese5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e5“ET values decreased with increasing compaction levels”
Claim · model-written summary
The highest evapotranspiration value (568 mm) was observed in the non-compacted control treatment.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- non-compacted control treatmente4
- Outcome
- ET valuee4
- Direction
- higheste4
- Value
- 568 mme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e4“The highest ET value (568 mm) was observed in non-compacted control treatment”
Claim · model-written summary
The lowest evapotranspiration value (240 mm) was observed under high compaction.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- ET valuee4
- Direction
- loweste5
- Value
- 240 mme5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e4“The highest ET value (568 mm) was observed in non-compacted control treatment”
e5“the lowest value (240 mm)”
Claim · model-written summary
Irrigation water use efficiency increased with decreased irrigation water.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- decreased irrigation watere6
- Outcome
- Irrigation water use efficiencye7
- Direction
- increasede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e7“Irrigation water use efficiency increased”
e6“decreased irrigation water”
Claim · model-written summary
Applied irrigation water was 435.61 and 291.59 mm in conventional furrow and 429.51 and 271.72 mm in alternate furrow in 2006 and 2007.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- conventional and alternate furrow systemse1
- Outcome
- applied irrigation watere1
- Value
- 435.61 and 291.59 mm, and 429.51 and 271.72 mme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“applied irrigation water in conventional and alternate furrow systems in 2006 and 2007 were measured as 435.61 and 291.59 mm, and 429.51 and 271.72 mm”
Claim · model-written summary
The KanSched irrigation model could be used for irrigation scheduling.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- irrigation schedulinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“Results revealed that KanSched irrigation model could be used for irrigation scheduling”
Claim · model-written summary
Plant coefficients used in the KanSched model should be determined properly for the climate conditions.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- plant coefficients to be used in the model should be determined properly based on climate conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“plant coefficients to be used in the model should be determined properly based on climate conditions”
Claim · model-written summary
The authors conclude that negative impacts of soil compaction can be eliminated with proper irrigation and fertilization.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- eliminated with proper irrigation and fertilizatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“be eliminated with proper irrigation and fertilization implementations”
Claim · model-written summary
Yield losses at high compaction levels may reach 45%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- high-compaction levelse1
- Outcome
- yield lossese1
- Direction
- decreaseinferrede1
- Value
- 45%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e1“yield losses at high-compaction levels may reach up to 45%”
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