Abstract
ABSTRACT Nitrogen (N) is the nutrient most absorbed by the oat crop. Unfavorable climate conditions decrease its efficiency, generating instability and reduction in yield. The objective of this study was to improve N use efficiency in oat grain yield by the economic value of the product and of the input and by models that scale the stability, considering systems of succession of high and reduced residual-N release in favorable and unfavorable years for cultivation. The study was conducted in the years 2013, 2014 and 2015 in two systems of succession (soybean/oat, maize/oat) in randomized blocks with eight replicates, using the N-fertilizer doses of 0, 30, 60 and 120 kg ha-1. The N-fertilizer dose for maximum economic efficiency in oats should be considered based on the meteorological trends of the cultivation year. N use optimization by models that determine the stability is an innovative proposal to increase fertilization efficiency on the yield. The N-fertilizer dose of 60 kg ha-1 promotes greater efficiency with predictability and yield, regardless of the agricultural year and the system of succession.
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Claims 3
Claim · model-written summary
The authors recommend basing the economically efficient nitrogen dose on cultivation-year meteorological trends.
- Taxon
- oats
Avena sativae0 - Outcome
- N-fertilizer dose for maximum economic efficiencye0
- Qualifier
- meteorological trends of the cultivation yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N-fertilizer dose for maximum economic efficiency in oats should be considered based on the meteorological trends of the cultivation year”
Claim · model-written summary
The authors propose stability models to improve nitrogen fertilization efficiency for yield.
- Taxon
- oatsAvena sativat0
- Outcome
- N use optimization by models that determine the stabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“oats”
e0“N use optimization by models that determine the stability is an innovative proposal to increase fertilization efficiency on the yield”
Claim · model-written summary
A 60 kg ha-1 nitrogen fertilizer dose improved efficiency, predictability and yield across years and succession systems.
- Taxon
- oatsAvena sativat0
- Treatment
- N-fertilizer dose of 60 kg ha-1e0
- Outcome
- efficiency with predictability and yielde0
- Direction
- greatere0
- Qualifier
- regardless of the agricultural year and the system of successione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N-fertilizer dose of 60 kg ha-1 promotes greater efficiency with predictability and yield, regardless of the agricultural year and the system of succession”
t0“oats”
The same questions in other papers
nitrogen · yield · Avena sativa (oats)Positive and negative results
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