Abstract
The effect of soil water supply on peach root production in summer was studied in the Goulburn Valley area of northern Victoria. Under commercial irrigation practice roots do not grow in summer. Field experiments showed that when the soil was kept moist by frequent irrigation (every 3–4 days), the concentration of roots in the surface soil nearly doubled in a single season. Furthermore, observation through glass plates showed that this enhanced root growth occurred throughout summer. When roots were kept inactive in dry soil until midsummer and thereafter irrigated frequently, they immediately responded and grew rapidly. The increased root growth did not impair fruit production. In a glasshouse experiment, with glass-fronted chambers, a relationship between root elongation, root concentration and the drying rate of the soil was found. Each experiment supported the hypothesis that soil drying rate determines the growth of roots in the surface soil. Where there was a high concentration of roots, a low irrigation frequency, and high transpiration, the rate of soil drying was rapid and roots grew slowly. It is suggested that manipulation of root growth by regulation of soil water supply may be an important method of studying root-top interactions.
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Claims 10
Claim · model-written summary
Under commercial irrigation practice, peach roots do not grow in summer.
- Taxon
- peach trees
Prunus persicat0 - Outcome
- rootse0
- Qualifier
- do not grow in summere0
- Setting
- commercial irrigation practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e0“Under commercial irrigation practice roots do not grow in summer”
Claim · model-written summary
Frequent irrigation nearly doubled the concentration of roots in the surface soil in a single season in field experiments.
- Taxon
- peach treesPrunus persicat0
- Treatment
- frequent irrigation (every 3–4 days)e1
- Outcome
- concentration of roots in the surface soile1
- Direction
- nearly doublede1
- Setting
- Field experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e1“Field experiments showed that when the soil was kept moist by frequent irrigation (every 3–4 days), the concentration of roots in the surface soil nearly doubled in a single season”
Claim · model-written summary
Root growth enhanced by frequent irrigation was observed through glass plates to occur throughout summer.
- Taxon
- peach treesPrunus persicat0
- Outcome
- enhanced root growthe2
- Qualifier
- occurred throughout summere2
- Setting
- glass platese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e2“observation through glass plates showed that this enhanced root growth occurred throughout summer”
Claim · model-written summary
Roots kept inactive in dry soil until midsummer grew rapidly after frequent irrigation.
- Taxon
- peach treesPrunus persicat0
- Treatment
- irrigated frequentlye3
- Outcome
- rootse3
- Direction
- grew rapidlye3
- Comparator
- kept inactive in dry soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e3“When roots were kept inactive in dry soil until midsummer and thereafter irrigated frequently, they immediately responded and grew rapidly”
Claim · model-written summary
The increased root growth did not impair peach fruit production.
- Taxon
- peach treesPrunus persicat0
- Treatment
- increased root growthe4
- Outcome
- fruit productione4
- Direction
- did not impaire4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e4“The increased root growth did not impair fruit production”
Claim · model-written summary
In a glasshouse experiment, root elongation was related to root concentration and the drying rate of the soil.
- Taxon
- peach treesPrunus persicat0
- Treatment
- drying rate of the soile5
- Outcome
- root elongatione5
- Setting
- glasshousee5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e5“In a glasshouse experiment, with glass-fronted chambers, a relationship between root elongation, root concentration and the drying rate of the soil was found”
Claim · model-written summary
Soil drying rate is hypothesised to determine the growth of roots in the surface soil.
- Taxon
- peach treesPrunus persicat0
- Outcome
- growth of roots in the surface soile6
- Qualifier
- soil drying rate determinese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e6“Each experiment supported the hypothesis that soil drying rate determines the growth of roots in the surface soil”
Claim · model-written summary
The rate of soil drying was rapid where there was a high concentration of roots, a low irrigation frequency and high transpiration.
- Taxon
- peach treesPrunus persicat0
- Treatment
- a low irrigation frequencye7
- Outcome
- the rate of soil dryinge7
- Direction
- rapide7
- Qualifier
- Where there was a high concentration of roots, a low irrigation frequency, and high transpiratione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e7“Where there was a high concentration of roots, a low irrigation frequency, and high transpiration, the rate of soil drying was rapid and roots grew slowly”
Claim · model-written summary
Roots grew slowly under high root concentration, low irrigation frequency and high transpiration.
- Taxon
- peach treesPrunus persicat0
- Treatment
- a low irrigation frequencye7
- Outcome
- rootse7
- Direction
- grew slowlye7
- Qualifier
- Where there was a high concentration of roots, a low irrigation frequency, and high transpiratione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e7“Where there was a high concentration of roots, a low irrigation frequency, and high transpiration, the rate of soil drying was rapid and roots grew slowly”
Claim · model-written summary
Manipulating root growth by regulating soil water supply is suggested as a method for studying root-top interactions.
- Taxon
- peach treesPrunus persicat0
- Outcome
- manipulation of root growth by regulation of soil water supplye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“root production of peach trees in summer”
e7“It is suggested that manipulation of root growth by regulation of soil water supply may be an important method of studying root-top interactions”
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See all 43 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.