Abstract
Short-term (5 years) effect of conservation agriculture (CA) practice on soil hydro-physical characteristics, soil organic carbon status and root morphology in wheat (triticum aestivum L.) was monitored under rice (Orgza sativa L.)-wheat rotation in a clay loam soil at the Indian Agricultural Research Institute, New Delhi. A small improvement in soil water content and a marginal decrease in bulk density by CA contributed in significant reduction (30-37%)in sub-surface compaction. The CA improved soil structure in the plough layer (0-15 cm) with significant increase in soil organic carbon status (27-38%). A marginal change in pore size distribution was recorded in favour of larger volume of retention pores (11-12%), in expense of macro- or drainable pore space. Steady-state infiltration, which was essentially profile-controlled, was therefore lower in the CA plots. Decrease in sub-surface soil strength and better soil water retention facilitated root growth in wheat in the sub-surface layer under CA. Results implied thatthe CA practice in rice-wheat system, although with a shorter period, led to an overall physical improvement of the most active root zone. This had positive impact on root morphology, which contributed to increase in the crop yield.
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Claims 10
Claim · model-written summary
Conservation agriculture improved soil water content.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- CAe0
- Outcome
- soil water contente0
- Direction
- improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“A small improvement in soil water content and a marginal decrease in bulk density by CA”
Claim · model-written summary
Conservation agriculture marginally decreased soil bulk density.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe0
- Outcome
- bulk densitye0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“A small improvement in soil water content and a marginal decrease in bulk density by CA”
Claim · model-written summary
Conservation agriculture significantly reduced subsurface compaction by 30-37%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe0
- Outcome
- sub-surface compactione0
- Direction
- reductione0
- Value
- 30-37%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“by CA contributed in significant reduction (30-37%)in sub-surface compaction”
Claim · model-written summary
Conservation agriculture improved plough-layer soil structure.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe0
- Outcome
- soil structuree0
- Direction
- improvede0
- Qualifier
- plough layer (0-15 cm)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“The CA improved soil structure in the plough layer (0-15 cm)”
Claim · model-written summary
Conservation agriculture significantly increased soil organic carbon status by 27-38%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe1
- Outcome
- soil organic carbon statuse0
- Direction
- increasee0
- Value
- 27-38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“with significant increase in soil organic carbon status (27-38%)”
e1“The CA improved soil structure”
Claim · model-written summary
The volume of soil retention pores increased marginally by 11-12%.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe1
- Outcome
- volume of retention porese0
- Direction
- largere0
- Value
- 11-12%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“A marginal change in pore size distribution was recorded in favour of larger volume of retention pores (11-12%), in expense of macro- or drainable pore space.”
e1“by CA contributed in significant reduction”
Claim · model-written summary
Conservation agriculture reduced macro- or drainable pore space.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe1
- Outcome
- macro- or drainable pore spacee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“in expense of macro- or drainable pore space”
e1“by CA contributed in significant reduction”
Claim · model-written summary
Steady-state infiltration was lower in conservation agriculture plots.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- CAe0
- Outcome
- Steady-state infiltratione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“Steady-state infiltration, which was essentially profile-controlled, was therefore lower in the CA plots.”
Claim · model-written summary
Conservation agriculture facilitated subsurface wheat root growth.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- roote0
- Treatment
- CAe0
- Outcome
- root growthe0
- Direction
- facilitatede0
- Qualifier
- sub-surface layere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decrease in sub-surface soil strength and better soil water retention facilitated root growth in wheat in the sub-surface layer under CA.”
Claim · model-written summary
Conservation agriculture increased crop yield through improved root morphology.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- root morphologye0
- Outcome
- crop yielde0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum)”
e0“This had positive impact on root morphology, which contributed to increase in the crop yield.”
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See all 267 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.