Abstract
Soil water deficits constrain productivity in Ethiopia. Farmers respond to variable onset of rain in the Central Rift Valley (CRV) of Ethiopia by dry soil planting sorghum [ Sorghum bicolor (L.) Moench] to take advantage of early rains and increase the period of crop growth before rains cease in late September or early October. Crop establishment is often unsatisfactory. The effect of dry soil planting depth for sorghum was evaluated with three water deficit scenarios on Vertisols in CRV. Dry soil planting at 5‐cm depth resulted in relatively better seedling emergence, plant survival, individual plant wt., and leaf plant −1 for all water regimes as compared with other dry planting depths. The best plant establishment (80%) occurred with a local variety planted at 5‐cm depth with no water applied for 15 d after dry soil planting followed by 30 mm applied at 5‐d intervals from 15 to 30 d after planting (W3). The worst establishment (12%) was with planting at 7‐cm depth and irrigating after planting with 30 mm of water and then adding 30 mm at 5‐d intervals from 15 to 30 d after planting (W1). Risk of failed crop establishment with dry soil planting on a Vertisol is less with 5 cm compared with other planting depths. The W3 type of water deficit, with seed lying in dry soil for 15 d before water was applied, is less detrimental to sorghum establishment and early growth, compared with rainfall after planting followed by a dry period of 15 d.
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Claims 5
Claim · model-written summary
Five-centimeter dry planting improved emergence, survival, weight, and leaves across water regimes.
- Treatment
- 5‐cm depthe0
- Outcome
- seedling emergence, plant survival, individual plant wt.e0
- Direction
- relatively bettere0
- Comparator
- other dry planting depthse0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry soil planting at 5‐cm depth resulted in relatively better seedling emergence, plant survival, individual plant wt., and leaf plant −1 for all water regimes as compared with other dry planting depths.”
t0“Sorghum”
Claim · model-written summary
A local variety at 5 cm under W3 reached 80% establishment.
- Material
- local varietye0
- Treatment
- 5‐cm depth with no water applied for 15 d after dry soil planting followed by 30 mm applied at 5‐d intervals from 15 to 30 d after planting (W3)e0
- Outcome
- plant establishmente0
- Value
- 80%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best plant establishment (80%) occurred with a local variety planted at 5‐cm depth with no water applied for 15 d after dry soil planting followed by 30 mm applied at 5‐d intervals from 15 to 30 d after planting (W3).”
t0“Sorghum”
Claim · model-written summary
Planting at 7 cm with W1 gave the worst establishment, 12%.
- Treatment
- planting at 7‐cm depth and irrigating after planting with 30 mm of water and then adding 30 mm at 5‐d intervals from 15 to 30 d after planting (W1)e0
- Outcome
- establishmente0
- Value
- 12%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The worst establishment (12%) was with planting at 7‐cm depth and irrigating after planting with 30 mm of water and then adding 30 mm at 5‐d intervals from 15 to 30 d after planting (W1).”
t0“Sorghum”
Claim · model-written summary
Five-centimeter planting lowered failure risk relative to other depths.
- Treatment
- 5 cme0
- Outcome
- Risk of failed crop establishmente0
- Direction
- lesse0
- Comparator
- other planting depthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Risk of failed crop establishment with dry soil planting on a Vertisol is less with 5 cm compared with other planting depths.”
t0“Sorghum”
Claim · model-written summary
W3 water deficit was less detrimental to sorghum establishment and early growth than rainfall followed by a dry period.
- Treatment
- W3 type of water deficite0
- Outcome
- sorghum establishment and early growthe0
- Direction
- less detrimentale0
- Comparator
- rainfall after planting followed by a dry period of 15 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The W3 type of water deficit, with seed lying in dry soil for 15 d before water was applied, is less detrimental to sorghum establishment and early growth, compared with rainfall after planting followed by a dry period of 15 d.”
The same questions in other papers
drought · growth · SorghumResults differ
13 papers in the same direction as this paper · 58 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
69 papers more in this group
See all 73 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.