Abstract
A field experiment was conducted during the autumn season of 2016 at the research station of College of agriculture, University of Basrah, Iraq. The soil texture was clay. The aims of the experiment were to study the effect of two irrigation water salinity levels, which were low water salinity (3.00-3.60 DSm-1) and high water salinity (7-8 DSm-1) and soil amendments on the soil moisture distribution and the yield of corn crop (Zea mays). The irrigation treatments included six treatments using the proposed double drip irrigation system. These treatments are first 100% high water salinity, second 100% Low water salinity, third 50% high water salinity plus 50% low water Salinity (remained constant along the growth season), fourth 50% low water salinity plus 50% high water salinity (variable), fifth 25% low water salinity plus 75% high water salinity and sixth 75% low water salinity plus 25% high water salinity. 20% irrigation water was added as leaching requirements. The soil amendment treatments are: first (0.2% fuel oil plus 0.2% lubrication oil) used on dry weight after they were emulsificated with irrigation water and applicated as a single treatment, second animals manure (2% amendment after C / N adjustment and third the control treatment. The treatments were applicated using RCBD. At the end of growth season of the corn crop the results showed that the moisture content of the soil increased as the amount of the water salinity increased and when the soil amendments were added to the soil. The animal manure surpassed the fuel oil plus lubrication oil in increasing the soil ability in moisture retention. The corn crop yield increased significantly when low water salinity was used with amendment addition. The gravimetric moisture content decreased as the lateral distance increased away from the driper. The highest moisture content was recorded for depth of (15-30 cm).
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Claims 6
Claim · model-written summary
Soil moisture content increases as irrigation water salinity increases
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- water salinitye2
- Outcome
- moisture content of the soile2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e2“the moisture content of the soil increased as the amount of the water salinity increased and when the soil amendments were added to the soil”
Claim · model-written summary
Soil moisture content increases when soil amendments are added
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- soil amendmentse2
- Outcome
- moisture content of the soile2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e2“the moisture content of the soil increased as the amount of the water salinity increased and when the soil amendments were added to the soil”
Claim · model-written summary
Animal manure surpasses fuel oil plus lubrication oil in increasing soil moisture retention ability
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- animal manuree3
- Outcome
- soil ability in moisture retentione3
- Direction
- increasinge3
- Comparator
- fuel oil plus lubrication oile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e3“The animal manure surpassed the fuel oil plus lubrication oil in increasing the soil ability in moisture retention”
Claim · model-written summary
Corn yield increases significantly with low irrigation water salinity combined with amendment addition
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- low water salinitye4
- Outcome
- corn crop yielde4
- Direction
- increasede4
- Qualifier
- with amendment additione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e4“The corn crop yield increased significantly when low water salinity was used with amendment addition”
Claim · model-written summary
Gravimetric soil moisture content decreases as lateral distance from the dripper increases
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- lateral distancee5
- Outcome
- gravimetric moisture contente5
- Direction
- decreasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e5“The gravimetric moisture content decreased as the lateral distance increased away from the driper”
Claim · model-written summary
Highest soil moisture content is recorded at the 15-30 cm depth
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- depthe6
- Outcome
- moisture contente6
- Direction
- higheste6
- Value
- 15-30 cme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn crop productivity”
e6“The highest moisture content was recorded for depth of (15-30 cm)”
The same questions in other papers
salinity · yield · Zea mays (maize)Results differ
8 papers in the same direction as this paper · 61 in the opposite direction
- no effect
- negative
- negative
66 papers more in this group
See all 70 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.