Abstract
Field studies on tillage and residue management for spring corn were conducted at two sites, in Tunliu (1987-1990), and Shouyang (1992-1995) counties of Shanxi province in the semihumid arid regions of northern China. This paper discusses the effects of different fall tillage (winter fallow tillage) and residue application methods on soil water profile with time and water use, as well as corn yields. Conservation tillage practices for corn in Shouyang resulted in significantly higher soil water contents, especially in the 0-100 cm profiles during April-July and September, than under conventional tillage, providing more available water for corn growth due to increased soil water storage during the rainy season. Conservation tillage with residue application practices generally led to yield advantages. Increases of 18-26% were found for reduced tillage with residue incorporation over the conventional systems. Yields under no-till were equivalent to those from conventional methods, especially in dry years. These results suggest that the following two alternatives -both reducing the number of secondary tillage passes after the main operation for spring corn production systems: - using deep ploughing with incorporated straw and fertilizers after harvest in fall, and no-till seeding practices - using subsoiling between rows or no-till with residue mulching after harvest in fall, and no-till seeding practices.
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Claims 6
Claim · model-written summary
Conservation tillage raised soil water content relative to conventional tillage.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Conservation tillage practicese0
- Outcome
- soil water contentse0
- Direction
- highere0
- Qualifier
- especially in the 0-100 cm profiles during April-July and Septembere0
- Comparator
- conventional tillagee0
- Setting
- Shouyange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conservation tillage practices for corn in Shouyang resulted in significantly higher soil water contents, especially in the 0-100 cm profiles during April-July and September, than under conventional tillage”
Claim · model-written summary
Conservation tillage with residue application generally improved yield.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Conservation tillage with residue application practicese0
- Outcome
- yielde0
- Direction
- advantagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conservation tillage with residue application practices generally led to yield advantages.”
t0“corn”
Claim · model-written summary
Reduced tillage with residue incorporation increased corn yield by 18-26% over conventional systems.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- reduced tillage with residue incorporatione0
- Outcome
- corn yieldse1
- Direction
- Increasese0
- Value
- 18-26%e0
- Comparator
- conventional systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases of 18-26% were found for reduced tillage with residue incorporation over the conventional systems.”
t0“corn”
e1“corn yields”
Claim · model-written summary
No-till yields were equivalent to conventional methods, especially in dry years.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- no-tille0
- Outcome
- Yieldse0
- Direction
- equivalente0
- Qualifier
- especially in dry yearse0
- Comparator
- conventional methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields under no-till were equivalent to those from conventional methods, especially in dry years.”
t0“corn”
Claim · model-written summary
The authors propose deep ploughing with incorporated straw and fertilizers followed by no-till seeding.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- using deep ploughing with incorporated straw and fertilizers after harvest in fall, and no-till seeding practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using deep ploughing with incorporated straw and fertilizers after harvest in fall, and no-till seeding practices”
t0“corn”
Claim · model-written summary
The authors propose subsoiling between rows or no-till with residue mulching followed by no-till seeding.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- using subsoiling between rows or no-till with residue mulching after harvest in fall, and no-till seeding practicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using subsoiling between rows or no-till with residue mulching after harvest in fall, and no-till seeding practices”
t0“corn”
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