Abstract
Three constraints affect the growth of crops in the Rabi (dry) season in southern Bangladesh: these are the clay nature of the soils which decreases the infiltration of water, the conserving of soil moisture with the increasingly dry conditions and the accumulation of salts on the soil surface through capillary from saline groundwater. Field experiments were conducted in the salt-affected areas of southern Bangladesh. The objectives of the study were to: (i) evaluate the effect of straw and irrigation frequency on crop growth and yield in maize and sunflower, and (ii) determine the combined effect of straw and irrigation frequency on the salinity, osmotic potential and moisture of soils. The experiment was carried out in farmers’ fields with eight treatments and was replicated three times during the dry (rabi) season of 2018–2019. There were two rice straw treatments (with or without straw), and 4 irrigation frequencies (at intervals of 5–7,10–12,15–17 or 20–25 days). Maize and sunflower seeds were sown by dibbling in no-tilled systems. The results showed that rice straw significantly affected the crop growth and yield, increasing the yield of maize and sunflower by 22% and 4.3% compared to treatments of without residue. The irrigation treatments also significantly affected crop yields. There was no interaction between straw levels and irrigation. The causes of these effects appeared to be improved water relations: rice straw and more frequent irrigations both reduced the salinity and osmotic potential of soils compared with treatments without straw while the soil moisture was greater in rice straw treatments and increased with the increased soil layers. We conclude that straw mulching and irrigation management practice could be used in coastal saline of heavy soils to reduce soil salinity, osmotic potentials thereby increasing crop yields in no-tilled systems.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Rice straw increased maize yield by 22% versus no residue.
- Treatment
- rice strawe0
- Outcome
- yield of maizee0
- Direction
- increasinge0
- Value
- 22%e0
- Comparator
- without residuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice straw significantly affected the crop growth and yield, increasing the yield of maize and sunflower by 22% and 4.3% compared to treatments of without residue”
Claim · model-written summary
Rice straw increased sunflower yield by 4.3% versus no residue.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- rice strawe0
- Outcome
- yield of maize and sunflowere0
- Direction
- increasinge0
- Value
- 4.3%e0
- Comparator
- without residuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice straw significantly affected the crop growth and yield, increasing the yield of maize and sunflower by 22% and 4.3% compared to treatments of without residue”
Claim · model-written summary
Irrigation treatments significantly affected crop yields.
- Taxon
- Sunflower and MaizeHelianthus annuus
Zea mayst0 - Treatment
- irrigation treatmentse0
- Outcome
- crop yieldse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The irrigation treatments also significantly affected crop yields.”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
Straw levels and irrigation showed no interaction.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Outcome
- no interaction between straw levels and irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no interaction between straw levels and irrigation.”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
Rice straw reduced soil salinity and osmotic potential relative to no straw.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Treatment
- rice strawe0
- Outcome
- salinity and osmotic potential of soilse0
- Direction
- reducede0
- Comparator
- without strawe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice straw and more frequent irrigations both reduced the salinity and osmotic potential of soils compared with treatments without straw”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
More frequent irrigation reduced soil salinity and osmotic potential relative to no straw treatments.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Treatment
- more frequent irrigationse0
- Outcome
- salinity and osmotic potential of soilse0
- Direction
- reducede0
- Comparator
- without strawe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice straw and more frequent irrigations both reduced the salinity and osmotic potential of soils compared with treatments without straw”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
Rice straw treatments had greater soil moisture.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Treatment
- rice straw treatmentse0
- Outcome
- soil moisturee0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil moisture was greater in rice straw treatments”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
Soil moisture increased with soil layers.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Outcome
- soil moisturee0
- Direction
- increasede0
- Setting
- soil layerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil moisture was greater in rice straw treatments and increased with the increased soil layers”
t0“Sunflower and Maize Cultivation”
Claim · model-written summary
The authors recommend straw mulching and irrigation management to reduce soil salinity and improve yields in coastal saline no-till systems.
- Taxon
- Sunflower and MaizeHelianthus annuusZea mayst0
- Outcome
- straw mulching and irrigation management practicee0
- Setting
- coastal saline of heavy soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“straw mulching and irrigation management practice could be used in coastal saline of heavy soils to reduce soil salinity, osmotic potentials thereby increasing crop yields in no-tilled systems”
t0“Sunflower and Maize Cultivation”
The same questions in other papers
Oryza sativa · yield · Helianthus annuus (common sunflower)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →Oryza sativa · yield · Zea mays (maize)Positive and negative results
62 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
62 papers more in this group
See all 66 papers →Oryza sativa · soil: physics · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- positive
Oryza sativa · soil: physics · Zea mays (maize)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →Oryza sativa · physiology: water · Zea mays (maize)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →irrigation · physiology: water · Helianthus annuus (common sunflower)Positive and negative results
41 papers in the same direction as this paper · 7 in the opposite direction
- negative
- no effect
- negative
45 papers more in this group
See all 49 papers →irrigation · physiology: water · Zea mays (maize)Positive and negative results
283 papers in the same direction as this paper · 39 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- negative
320 papers more in this group
See all 324 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.