Abstract
No-tillage production systems are being used by an increasing number of producers in the Great Plains, however, the large amount of surface residue left on the soil surface can made nitrogen (N) management difficult. There are several products currently available for use with granular urea (46% N) and urea-ammonium nitrate solution (UAN) that have the ability to reduce or eliminated N losses. The objective of this study was to evaluate the effectiveness of several N-fertilizer additives and a slow-release polymer coated urea product in a no-tillage corn (Zea mays L.) production system. A 3-year field experiment was conducted from 2006–2008 at the North Central Kansas Experiment Field, located near Scandia, KS, on a Crete silt loam soil (fine, montmorillonitic, mesic Pachic Arquistoll). When averaged over the 3-years of the experiment, the treated fertilizer products yielded greater than untreated urea or UAN. This occurred regardless of applied N-rate. The additive treated products along with the time release-polymer coated urea yield the same as ammonium nitrate. There were no significant differences among additive products. If producers wish to broadcast urea-containing N-fertilizer on the soil surface in high-residue production systems there are several N- additive options available that limit N loses and maximize grain yield with reduced environmental risk
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Claims 5
Claim · model-written summary
Treated fertilizers yielded more corn than untreated urea or UAN regardless of nitrogen rate.
- Taxon
- CORN
Zea mays subsp. mayst0 - Treatment
- treated fertilizer productse0
- Outcome
- yieldede0
- Direction
- greatere0
- Qualifier
- regardless of applied N-ratee0
- Comparator
- untreated urea or UANe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the treated fertilizer products yielded greater than untreated urea or UAN. This occurred regardless of applied N-rate”
t0“CORN”
Claim · model-written summary
Additive treated fertilizers yielded the same as ammonium nitrate.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- additive treated productse0
- Outcome
- yielde0
- Direction
- the samee0
- Comparator
- ammonium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The additive treated products along with the time release-polymer coated urea yield the same as ammonium nitrate”
t0“CORN”
Claim · model-written summary
Time release polymer coated urea yielded the same as ammonium nitrate.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- time release-polymer coated ureae0
- Outcome
- yielde0
- Direction
- the samee0
- Comparator
- ammonium nitratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The additive treated products along with the time release-polymer coated urea yield the same as ammonium nitrate”
t0“CORN”
Claim · model-written summary
Additive products did not differ significantly.
- Taxon
- CORNZea mays subsp. mayst0
- Outcome
- differences among additive productse0
- Direction
- no significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences among additive products”
t0“CORN”
Claim · model-written summary
Several nitrogen additives can limit losses and maximize grain yield in high residue systems.
- Taxon
- CORNZea mays subsp. mayst0
- Outcome
- N- additive optionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there are several N- additive options available that limit N loses and maximize grain yield with reduced environmental risk”
t0“CORN”
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See all 3,908 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.