Abstract
Abstract Information on crop response to depth and salinity of ground water and soil submergence is important for planning drainage and optimizing crop production. Response of a semidwarf wheat ( Triticum aestivum L.) to four depths (60, 90, 120, and 150 cm) and three salinities (EC 0.5, 2.9, and 5.2 mmho/cm) of ground water was studied in lysimeters filled with silt loam soil during 1970–71 and 1971–72. The plants were irrigated with water of EC 0.5 mmho/cm when the lysimeters with a 150‐cm water table depth indicated a tension of 0.5 bar at a 75‐cm depth. Ground water of EC 0.5 mmho/cm at 60 and 90‐cm depths gave highest yields. Comparable increase in the salinity of ground water caused greater reduction in yield with shallow water tables than with deep water tables. It is indicated that critical depth of ground water, for optimum crop production, would vary in relation to its salinity. Growth and yield response of wheat to soil submergence was investigated in another set of lysimeters with water table at 60 cm. Soil submergence up to 2 days did not affect growth. It decreased yield gradually up to 5 days and sharply thereafter. Prolonged soil submergence reduced protein content in the grain as indexed by N content. To ensure optimum grain quality and production, excess water must be drained from the root zone within 3 days of submergence.
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Claims 6
Claim · model-written summary
Ground water of EC 0.5 mmho/cm at 60 and 90-cm depths gave the highest wheat yields.
- Taxon
- Triticum aestivum
Triticum aestivumt0 - Treatment
- Ground water of EC 0.5 mmho/cm at 60 and 90‐cm depthse1
- Outcome
- yieldse1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e1“Ground water of EC 0.5 mmho/cm at 60 and 90‐cm depths gave highest yields”
Claim · model-written summary
A comparable rise in ground water salinity caused a greater yield reduction under shallow than under deep water tables.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- increase in the salinity of ground watere3
- Outcome
- yielde3
- Direction
- greater reductione3
- Qualifier
- shallow water tablese3
- Comparator
- deep water tablese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e3“Comparable increase in the salinity of ground water caused greater reduction in yield with shallow water tables than with deep water tables.”
Claim · model-written summary
Soil submergence up to 2 days did not affect wheat growth.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- Soil submergencee4
- Outcome
- growthe4
- Direction
- did not affecte4
- Qualifier
- up to 2 dayse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e4“Soil submergence up to 2 days did not affect growth.”
Claim · model-written summary
Soil submergence decreased wheat yield gradually up to 5 days and sharply thereafter.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- soil submergencee2
- Outcome
- yielde5
- Direction
- decreasede5
- Qualifier
- gradually up to 5 days and sharply thereaftere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e2“Growth and yield response of wheat to soil submergence”
e5“It decreased yield gradually up to 5 days and sharply thereafter.”
Claim · model-written summary
Prolonged soil submergence reduced protein content in wheat grain, as indexed by N content.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- Prolonged soil submergencee6
- Outcome
- protein content in the graine6
- Direction
- reducede6
- Qualifier
- as indexed by N contente6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e6“Prolonged soil submergence reduced protein content in the grain as indexed by N content.”
Claim · model-written summary
Excess water should be drained from the root zone within 3 days of submergence to protect wheat grain quality and production.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- excess water must be drained from the root zone within 3 days of submergencee7
- Qualifier
- To ensure optimum grain quality and productione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat (Triticum aestivum L.)”
e7“To ensure optimum grain quality and production, excess water must be drained from the root zone within 3 days of submergence.”
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