Abstract
Purpose: The objective of this study is to evaluate a sustainable management for oat crops with high nitrogen use efficiency combined with high seeding density to improve grain yield and quality while increasing oat competitive ability against ryegrass. Method/design/approach: The experiment was carried out in the years 2020, 2021 and 2022, with an experimental design of randomized blocks with four replications, in a 4 x 3 factorial arrangement, for sowing densities (100, 300, 600 and 900 viable seeds m-2) and form of nutrient supply: [single dose, (100%) at phenological stage V4 (fourth expanded leaf); fractional (70/30%) at the V4/V6 phenological stage (fourth and sixth expanded leaves) and; fractionated (70/30%) at phenological stage V4/R1 (beginning of anthesis)], respectively. Indicators of productivity and chemical quality of oat grains were analyzed, and lodging and ryegrass inflorescences exposed on oat plants were analyzed in the field. Results and conclusion: The application of a single dose of nitrogen at the V4 stage resulted in higher grain and oat straw yields, without changes in the crude protein and crude fiber content of the grains. The combination of this nitrogen application method with a sowing density of 490 seeds m-2 increased the competitive capacity of white oat plants, reducing the number of ryegrass inflorescences. Originality/value: This study contributes to more sustainable management practices in the use of nitrogen and the contribution of plant density in promoting competitive ability, reducing dependence on agrochemicals in ryegrass control and promoting food security and environmental protection.
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Claims 4
Claim · model-written summary
A single dose of nitrogen at the V4 stage resulted in higher oat grain and straw yields.
- Taxon
- oat
Avena sativat0 - Treatment
- single dose of nitrogen at the V4 stagee1
- Outcome
- grain and oat straw yieldse1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“oat Grain Yield and Quality”
e1“The application of a single dose of nitrogen at the V4 stage resulted in higher grain and oat straw yields”
Claim · model-written summary
A single dose of nitrogen at the V4 stage did not change the crude protein and crude fiber content of oat grain.
- Taxon
- oatAvena sativat0
- Treatment
- single dose of nitrogen at the V4 stagee1
- Outcome
- crude protein and crude fiber contente2
- Direction
- without changese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“oat Grain Yield and Quality”
e1“The application of a single dose of nitrogen at the V4 stage resulted in higher grain and oat straw yields”
e2“without changes in the crude protein and crude fiber content of the grains”
Claim · model-written summary
A sowing density of 490 seeds m-2 combined with single-dose V4 nitrogen increased the competitive capacity of white oat plants.
- Taxon
- oatAvena sativat0
- Treatment
- combination of this nitrogen application method with a sowing density of 490 seeds m-2e3
- Outcome
- competitive capacity of white oat plantse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“oat Grain Yield and Quality”
e3“The combination of this nitrogen application method with a sowing density of 490 seeds m-2 increased the competitive capacity of white oat plants, reducing the number of ryegrass inflorescences”
Claim · model-written summary
The combination of single-dose V4 nitrogen and 490 seeds m-2 reduced the number of ryegrass inflorescences in oat.
- Taxon
- oatAvena sativat0
- Treatment
- combination of this nitrogen application method with a sowing density of 490 seeds m-2e3
- Outcome
- number of ryegrass inflorescencese3
- Direction
- reducinge3
LoliumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“oat Grain Yield and Quality”
e3“The combination of this nitrogen application method with a sowing density of 490 seeds m-2 increased the competitive capacity of white oat plants, reducing the number of ryegrass inflorescences”
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