Abstract
SUMMARY General mathematical relations between yield parameters, plant populations and rainfall were developed for an indigenous sorghum from the results of 28 population/row spacing trials conducted at four sites over five seasons. Populations maximizing yield increased from 25 000 to 69 000 plants ha −1 over the rainfall range 200–700 mm (pre-planting to harvest total). Tillering partly compensated for low populations but yields from 10000 plants ha −1 at 300 and 600 mm rainfall were only 80 and 61% of potential maximum, respectively. Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.
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Claims 8
Claim · model-written summary
Yield maximizing sorghum populations increased from 25 000 to 69 000 plants ha −1 across 200–700 mm rainfall.
- Outcome
- Populations maximizing yielde0
- Direction
- increasede0
- Value
- 25 000 to 69 000 plants ha −1e0
- Setting
- rainfall range 200–700 mme0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Populations maximizing yield increased from 25 000 to 69 000 plants ha −1 over the rainfall range 200–700 mm (pre-planting to harvest total).”
t0“Sorghum”
Claim · model-written summary
Tillering partly compensated for low populations.
- Outcome
- Tillering partly compensated for low populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillering partly compensated for low populations but yields from 10000 plants ha −1 at 300 and 600 mm rainfall were only 80 and 61% of potential maximum, respectively.”
t0“Sorghum”
Claim · model-written summary
At 300 mm rainfall, yield at 10000 plants ha −1 was 80% of potential maximum.
- Treatment
- 10000 plants ha −1e0
- Outcome
- yieldse0
- Direction
- onlye0
- Value
- 80e0
- Qualifier
- 300e0
- Comparator
- potential maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillering partly compensated for low populations but yields from 10000 plants ha −1 at 300 and 600 mm rainfall were only 80 and 61% of potential maximum, respectively.”
t0“Sorghum”
Claim · model-written summary
At 600 mm rainfall, yield at 10000 plants ha −1 was 61% of potential maximum.
- Treatment
- 10000 plants ha −1e0
- Outcome
- yieldse0
- Direction
- onlye0
- Value
- 61%e0
- Qualifier
- 600e0
- Comparator
- potential maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillering partly compensated for low populations but yields from 10000 plants ha −1 at 300 and 600 mm rainfall were only 80 and 61% of potential maximum, respectively.”
t0“Sorghum”
Claim · model-written summary
Row spacing at constant population affected tiller numbers.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.”
t0“Sorghum”
Claim · model-written summary
Row spacing at constant population affected panicle weights.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.”
t0“Sorghum”
Claim · model-written summary
Row spacing at constant population did not affect panicle numbers.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.”
t0“Sorghum”
Claim · model-written summary
Yield differences from row spacing were unrelated to rainfall.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Row spacing at constant population affected tiller numbers and eventual panicle weights but not panicle numbers, and any yield differences were unrelated to rainfall.”
t0“Sorghum”
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