Abstract
The effect of frequency of irrigation on the growth, development and yield of soybeans was studied in two experiments at the Irrigation Research Station, Ord Irrigation Area (15¦39'S., 128¦43' E.), Western Australia. Irrigation frequencies were based on Class A pan evaporation and involved irrigation after every 30, 60, 120 or 240 mm of cumulative pan evaporation. An additional treatment, saturated soil culture (SSC) or continuous furrow irrigation (analogous to 0 mm pan evaporation), was included in one of the experiments. Seed yields increased linearly with increasing irrigation frequency with the highest yields being obtained with SSC. Increasing the frequency of irrigation increased seed yields through the promotion and prolongation of crop growth. Growth rates of all plant components, viz. vegetative, reproductive, roots and nodules 'were enhanced by more frequent irrigation, senescence was delayed, and leaf area retained later in the growing period. Greater yields were reflected mainly in larger seed. The physiological basis for the observed responses is discussed.
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Claims 7
Claim · model-written summary
Soybean seed yield increased linearly with irrigation frequency.
- Taxon
- soybean
Glycine maxt0 - Treatment
- increasing irrigation frequencye0
- Outcome
- Seed yieldse0
- Direction
- increasede0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields increased linearly with increasing irrigation frequency”
t0“soybean”
Claim · model-written summary
Saturated soil culture produced the highest seed yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- saturated soil culture (SSC)e1
- Outcome
- yieldse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest yields being obtained with SSC”
e1“saturated soil culture (SSC) or continuous furrow irrigation”
t0“soybean”
Claim · model-written summary
More frequent irrigation promoted and prolonged crop growth.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Increasing the frequency of irrigatione0
- Outcome
- crop growthe0
- Direction
- promotion and prolongatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the frequency of irrigation increased seed yields through the promotion and prolongation of crop growth”
t0“soybean”
Claim · model-written summary
More frequent irrigation enhanced growth rates of vegetative and reproductive components, roots, and nodules.
- Taxon
- soybeanGlycine maxt0
- Treatment
- more frequent irrigatione0
- Outcome
- Growth rates of all plant componentse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth rates of all plant components, viz. vegetative, reproductive, roots and nodules 'were enhanced by more frequent irrigation”
t0“soybean”
Claim · model-written summary
More frequent irrigation delayed senescence.
- Taxon
- soybeanGlycine maxt0
- Treatment
- more frequent irrigatione1
- Outcome
- senescencee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“senescence was delayed”
e1“more frequent irrigation, senescence was delayed”
t0“soybean”
Claim · model-written summary
More frequent irrigation retained leaf area later in the growing period.
- Taxon
- soybeanGlycine maxt0
- Treatment
- more frequent irrigatione1
- Outcome
- leaf areae0
- Direction
- retainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area retained later in the growing period”
e1“more frequent irrigation, senescence was delayed, and leaf area retained later in the growing period”
t0“soybean”
Claim · model-written summary
Greater soybean yield was mainly reflected in larger seed.
- Taxon
- soybeanGlycine maxt0
- Outcome
- larger seede0
- Direction
- largere0
- Comparator
- Greater yieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greater yields were reflected mainly in larger seed”
t0“soybean”
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irrigation · growth · Glycine max (soybean)Positive and negative results
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1 paper in the same direction as this paper
- positive
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.