Abstract
Abstract Close linear correlations were obtained between yield of spring‐sown crops and evapotranspiration calculated for each of four soil types and irrigation treatments in Canterbury. Available soil water storage, derived from soil depth (which was the only soil factor used to represent soil types), was shown to be the major soil factor determining crop yield. Under dryland conditions, barley and pea yields were greatly affected by each soil's available water storage capacity. In the two driest seasons, crops grown on the deep soils yielded 2–3 times higher than those on the shallow soils. Under irrigation, soil type differences were less important and, where adequate water was supplied, crops grown on shallow soils produced yields equivalent to those from deep soils. Relative crop responses to irrigation of the different soils were dependent upon the nature of the season and the timing of irrigation. In drier seasons, whenever irrigation treatments failed to eliminate severe water deficit stress in crops on the shallow soils, crops grown on the deeper soils had larger responses to the same irrigation treatment. In moister seasons, or where irrigation treatments maintained adequate water for crops growing on shallow soils, the shallow soils showed greatest crop responses to the water applied. In certain seasons irrigation suppressed yields on some deeper soils. Greenfeed grown on shallow soils commonly had lower yields than on deeper soils and this was partially attributed to nitrogen deficiency. Differences in yields were reflected in differences in grain and pea weights and in other yield components in peas. Nitrogen contents of barley grain showed only small variations between soils but large variations between seasons. Soil types had significant effects on barley screenings percentages, particularly under dryland conditions. Quality differences between soil types were lessened or eliminated through irrigation.
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Claims 16
Claim · model-written summary
Close linear correlations were found between yield of spring-sown crops and evapotranspiration across four soil types and irrigation treatments in Canterbury.
- Taxon
- barley and peas
Lathyrus oleraceus.jpg?width=60)
Hordeum vulgaret0 - Treatment
- evapotranspiratione0
- Outcome
- yielde0
- Setting
- Canterburye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“spring‐sown barley and peas”
e0“Close linear correlations were obtained between yield of spring‐sown crops and evapotranspiration calculated for each of four soil types and irrigation treatments in Canterbury”
Claim · model-written summary
Available soil water storage, derived from soil depth, was the major soil factor determining crop yield.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- Available soil water storagee0
- Outcome
- crop yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Available soil water storage, derived from soil depth (which was the only soil factor used to represent soil types), was shown to be the major soil factor determining crop yield”
Claim · model-written summary
Under dryland conditions barley and pea yields were greatly affected by each soil's available water storage capacity.
- Taxon
- barley and peaLathyrus oleraceusHordeum vulgaree0
- Treatment
- available water storage capacitye0
- Outcome
- barley and pea yieldse0
- Setting
- dryland conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Under dryland conditions, barley and pea yields were greatly affected by each soil's available water storage capacity”
Claim · model-written summary
In the two driest seasons crops on deep soils yielded 2-3 times higher than those on shallow soils.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Outcome
- yieldede0
- Direction
- highere0
- Value
- 2–3 timese0
- Qualifier
- In the two driest seasonse0
- Comparator
- shallow soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“In the two driest seasons, crops grown on the deep soils yielded 2–3 times higher than those on the shallow soils”
Claim · model-written summary
Under irrigation soil type differences were less important, and with adequate water crops on shallow soils produced yields equivalent to those on deep soils.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- irrigatione0
- Outcome
- yieldse0
- Direction
- equivalente0
- Comparator
- deep soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Under irrigation, soil type differences were less important and, where adequate water was supplied, crops grown on shallow soils produced yields equivalent to those from deep soils”
Claim · model-written summary
Relative crop responses to irrigation of the different soils depended on the nature of the season and the timing of irrigation.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- timing of irrigatione0
- Outcome
- Relative crop responses to irrigatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Relative crop responses to irrigation of the different soils were dependent upon the nature of the season and the timing of irrigation”
Claim · model-written summary
In drier seasons, when irrigation failed to eliminate severe water deficit in crops on shallow soils, crops on deeper soils had larger responses to the same irrigation.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- irrigation treatmente0
- Outcome
- responses to the same irrigation treatmente0
- Direction
- largere0
- Comparator
- shallow soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“In drier seasons, whenever irrigation treatments failed to eliminate severe water deficit stress in crops on the shallow soils, crops grown on the deeper soils had larger responses to the same irrigation treatment”
Claim · model-written summary
In moister seasons, or where irrigation kept adequate water for crops on shallow soils, shallow soils showed the greatest crop responses to the water applied.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- water appliede0
- Outcome
- crop responses to the water appliede0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“In moister seasons, or where irrigation treatments maintained adequate water for crops growing on shallow soils, the shallow soils showed greatest crop responses to the water applied”
Claim · model-written summary
In certain seasons irrigation suppressed yields on some deeper soils.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- irrigatione0
- Outcome
- yieldse0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“In certain seasons irrigation suppressed yields on some deeper soils”
Claim · model-written summary
Greenfeed grown on shallow soils commonly had lower yields than on deeper soils.
Verbatim
t0“spring‐sown barley and peas”
e0“Greenfeed grown on shallow soils commonly had lower yields than on deeper soils”
Claim · model-written summary
The lower greenfeed yields on shallow soils were partially attributed to nitrogen deficiency.
Verbatim
t0“spring‐sown barley and peas”
e0“Greenfeed grown on shallow soils commonly had lower yields than on deeper soils and this was partially attributed to nitrogen deficiency”
Claim · model-written summary
Differences in yields were reflected in differences in grain and pea weights and in other yield components in peas.
- Taxon
- peasLathyrus oleraceuse0
- Outcome
- grain and pea weights and in other yield componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Differences in yields were reflected in differences in grain and pea weights and in other yield components in peas”
Claim · model-written summary
Nitrogen contents of barley grain varied only slightly between soils.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- soilse0
- Outcome
- Nitrogen contents of barley graine0
- Direction
- only small variationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Nitrogen contents of barley grain showed only small variations between soils but large variations between seasons”
Claim · model-written summary
Nitrogen contents of barley grain varied greatly between seasons.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- seasonse0
- Outcome
- Nitrogen contents of barley graine0
- Direction
- large variationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Nitrogen contents of barley grain showed only small variations between soils but large variations between seasons”
Claim · model-written summary
Soil types had significant effects on barley screenings percentages, particularly under dryland conditions.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Soil typese0
- Outcome
- barley screenings percentagese0
- Setting
- dryland conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Soil types had significant effects on barley screenings percentages, particularly under dryland conditions”
Claim · model-written summary
Quality differences between soil types were lessened or eliminated through irrigation.
- Taxon
- barley and peasLathyrus oleraceusHordeum vulgaret0
- Treatment
- irrigatione0
- Outcome
- Quality differences between soil typese0
- Direction
- lessened or eliminatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring‐sown barley and peas”
e0“Quality differences between soil types were lessened or eliminated through irrigation”
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