Abstract
Abstract Because of different climatical conditions during the growing season from those of reported experiments in literature and the relatively few data about annual cropped winter‐grown wheat ( Triticum aestivum L.) yield response to depth of tillage and to incorporation of previously broadcasted P‐fertilizer, a 2‐year field trial was conducted to evaluate the effects of three tillage depths, 10, 20, and 40 cm; and three P‐fertilizer rates on grain yields and dry matter production. The three P‐fertilizer rates were: no P‐fertilizer, 12 kg P/ha per 10 cm depth of tilled soil, and a flat 60 kg P/ha rate. The field trial had a randomized split plot design with four replications and was simultaneously conducted on two soils of different texture. Grain yields, dry matter production, and P‐uptake over 2 years were not influenced by depths of tillage. Initial development of wheat plants was better on shallow tilled soil. Added P‐fertilizer markedly increased grain yields, dry matter production, and P‐uptake. P‐fertilizer rates based on volume of tilled soil were as effective as the flat P‐fertilizer rate. Dry matter production response to P‐fertilizer was influenced by soil texture, indicating limiting P‐availability with decreasing clay content of soil. From the data obtained it can be concluded that increasing depth of tillage has no significant effect on annual cropped winter‐grown wheat yields and secondly that there is no need to incorporate P‐fertilizer deeper than the top soil layer of 10 cm. Therefore, if plowing a wheat stubble becomes necessary, P‐fertilizer rate can be based on the P‐availability of the sampled top soil layer after plowing and adjusted to the depth of the planned seedbed preparation to keep P‐availability at the recommended level for wheat growing.
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Claims 7
Claim · model-written summary
Tillage depth did not influence grain yield, dry matter or phosphorus uptake.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- depths of tillagee0
- Outcome
- Grain yields, dry matter production, and P‐uptakee0
- Direction
- not influencede0
- Qualifier
- over 2 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields, dry matter production, and P‐uptake over 2 years were not influenced by depths of tillage.”
t0“Wheat”
Claim · model-written summary
Wheat initially developed better on shallow tilled soil.
- Taxon
- wheatTriticum aestivume0
- Treatment
- shallow tilled soile0
- Outcome
- Initial developmente0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Initial development of wheat plants was better on shallow tilled soil.”
Claim · model-written summary
Added phosphorus increased grain yield, dry matter and phosphorus uptake.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Added P‐fertilizere0
- Outcome
- grain yields, dry matter production, and P‐uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Added P‐fertilizer markedly increased grain yields, dry matter production, and P‐uptake.”
t0“Wheat”
Claim · model-written summary
Volume-based phosphorus rates were as effective as a flat rate.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- P‐fertilizer rates based on volume of tilled soile0
- Outcome
- as effectivee0
- Direction
- as effectivee0
- Comparator
- flat P‐fertilizer ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P‐fertilizer rates based on volume of tilled soil were as effective as the flat P‐fertilizer rate.”
t0“Wheat”
Claim · model-written summary
Soil texture influenced dry-matter response to phosphorus fertilizer.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- P‐fertilizere0
- Outcome
- Dry matter production responsee0
- Qualifier
- decreasing clay content of soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter production response to P‐fertilizer was influenced by soil texture, indicating limiting P‐availability with decreasing clay content of soil.”
t0“Wheat”
Claim · model-written summary
The authors conclude that fertilizer need not be incorporated below 10 cm.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- no need to incorporate P‐fertilizer deeper than the top soil layer of 10 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no need to incorporate P‐fertilizer deeper than the top soil layer of 10 cm.”
t0“Wheat”
Claim · model-written summary
The authors recommend setting the fertilizer rate from topsoil phosphorus availability after plowing and planned seedbed depth.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- P‐fertilizer rate can be based on the P‐availability of the sampled top soil layer after plowing and adjusted to the depth of the planned seedbed preparatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P‐fertilizer rate can be based on the P‐availability of the sampled top soil layer after plowing and adjusted to the depth of the planned seedbed preparation”
t0“Wheat”
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