Abstract
Abstract Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.). Specific objectives were to compare the two tillage systems in respect to growth characteristics and final yield of corn, to ascertain the most effective method of applying fertilizer P with chisel plowing, and to determine residual P distribution in the rooting zone after 3 years with the various systems employed. Fertilizer P was applied at three or four rates as orthophosphoric acid in conjunction with varied tillage and placement as follows: 1) surface broadcasting of P and incorporation by chisel plow tillage, 2) P application by chisel plow at 18 to 20‐cm depth, 3) chisel plow tillage with P banded beside the row at planting, and 4) moldboard plow tillage following surface broadcasting of P. Primary tillage was accomplished in the fall after corn harvest. Somewhat higher yields were obtained with moldboard plowing than with chisel plowing, irrespective of P rate or placement. This benefit for the moldboard plow is offset by the moisture conservation and erosion control advantages afforded by the chisel. Broadcast P prior to chiselling and deep placement of P with the chisel gave comparable yields, although deep placement afforded greater season‐long crop feeding on the fertilizer. Runoff loss of P on sediment was minimized with chisel placement of the P.
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Claims 5
Claim · model-written summary
Moldboard plowing gave somewhat higher corn yields than chisel plowing, irrespective of P rate or placement.
- Taxon
- corn
Zea mays subsp. mayse2 - Treatment
- moldboard plowinge1
- Outcome
- yieldse1
- Direction
- highere1
- Qualifier
- irrespective of P rate or placemente1
- Comparator
- chisel plowinge1
- Setting
- three locations in Nebraska and one in Illinoise2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Somewhat higher yields were obtained with moldboard plowing than with chisel plowing, irrespective of P rate or placement”
e2“Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.)”
Claim · model-written summary
The moisture conservation and erosion control advantages of chisel plowing offset the yield benefit of moldboard plowing.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- chisele3
- Outcome
- moisture conservation and erosion controle3
- Comparator
- moldboard plowe3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.)”
e3“This benefit for the moldboard plow is offset by the moisture conservation and erosion control advantages afforded by the chisel”
Claim · model-written summary
Broadcast P before chiselling and deep P placement with the chisel gave comparable corn yields.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- Broadcast P prior to chisellinge4
- Outcome
- yieldse4
- Direction
- no_changeinferrede4
- Comparator
- deep placement of P with the chisele4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.)”
e4“Broadcast P prior to chiselling and deep placement of P with the chisel gave comparable yields”
Claim · model-written summary
Deep placement of P gave greater crop feeding on the fertilizer than broadcast P prior to chiselling.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- deep placemente5
- Outcome
- crop feeding on the fertilizere5
- Direction
- greatere5
- Comparator
- Broadcast P prior to chisellinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.)”
e4“Broadcast P prior to chiselling and deep placement of P with the chisel gave comparable yields”
e5“although deep placement afforded greater season‐long crop feeding on the fertilizer”
Claim · model-written summary
Chisel placement of P minimized runoff loss of P on sediment from corn fields.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- chisel placement of the Pe6
- Outcome
- Runoff loss of P on sedimente6
- Direction
- minimizede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Field experiments conducted at three locations in Nebraska and one in Illinois compared tillage by chisel and moldboard plowing for corn ( Zea mays L.)”
e6“Runoff loss of P on sediment was minimized with chisel placement of the P”
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