Canola response to nitrogen sources and split application

Kaefer, João Edson; Richart, Alfredo; Nozaki, Márcia de Holanda; Daga, Jacir; Campagnolo, Rodrigo; Follmann, Paulo E.

doi:10.1590/1807-1929/agriambi.v19n11p1042-1048

Cited by 3 publications

(3 citation statements)

References 9 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, physiological investigations have shown that the stem elongation stage is important in the N nutrition of crop when a high N-supply is needed for yield formation (Behrens et al, 2001;Barlo'g and Grzebisz, 2004). Kaefer et al (2015) reported that oilseed rape growth and yield response were not influenced by N fertiliser sources, but were significantly influenced by split N pattern of 1 /3 at sowing and 2 /3 at top-dressing.…”

Section: Discussionmentioning

confidence: 99%

Split nitrogen sources effects on nitrogen use efficiency, yield and seed quality of safflower (Carthamus tinctorius L.)

et al. 2018

View full text Add to dashboard Cite

The effects of nitrogen (N) on crop yields have historically been assessed with field trials, but selection and use of the best sources and optimal timing N applications have a significant role in realizing the maximum potential of oilseeds quality and quantity. This study was conducted to determine the combine effects of N sources [ammonium nitrate (AN), ammonium sulphate (AS), sulphur coated urea (SCU), and urea (U)] and split N fertilisation [(1/4,3/4,0), (1/3,1/3,1/3), (1/2,1/2,0), and (1/3,2/3,0)] on safflower (Carthamus tinctorius L.) some growth characters, yield and seed quality, and N use efficiency based on a split plot design with three replications at the experimental research station, Shiraz University in 2015 and 2016. The highest safflower dry matter (5140.93 kg ha–1), seed yield (3303.52 kg ha–1) and protein yield (694.95 kg ha–1) were achieved with the application of AN fertiliser in a split pattern of 1/2,1/2,0 (applying half of the N at sowing time and the rest at stem elongation), while the highest oil yield (753.09 kg ha– 1) was observed by U fertiliser and similar split pattern. Applying AN fertiliser and split patterns of 1/3,2/3,0 (applying one third of the N at sowing and two thirds of the N at stem elongation) and 1/4,3/4,0 (applying one quarter of the N at sowing and three quarters at stem elongation) maximised safflower N uptake efficiency (NUpE) (0.78 kg kg–1). However, the highest N utilisation efficiency (NUtE) (43.70 kg kg–1) was obtained when AN fertiliser in a split pattern of 1/2,1/2,0 was applied. On the contrary, applying AS and SCU fertilisers was less effective on safflower performance by all split patterns. It is concluded that applying AN fertiliser in a split pattern of 1/3,2/3,0 and or U fertiliser in a split pattern of 1/2,1/2,0 not only enhanced safflower growth, yield and seed quality improved, but also increased the N use efficiency of safflower.

show abstract

Section: Discussionmentioning

confidence: 99%

Split nitrogen sources effects on nitrogen use efficiency, yield and seed quality of safflower (Carthamus tinctorius L.)

et al. 2018

View full text Add to dashboard Cite

show abstract

“…At Moorreesburg, nitrogen source had no effect on yield, which may be ascribed to optimum soil N availability and optimum N rates during fertilizer applications (Kaefer et al., 2015). Soil mineral N concentrations ranged between 0.06 and 0.12% from 2016 to 2019 at the site.…”

Section: Discussionmentioning

confidence: 99%

Nitrogen source effects on canola (Brassica napus L.) grown under conservation agriculture in South Africa

Crous

Labuschagne²,

Swanepoel

2021

Crop Science

View full text Add to dashboard Cite

Canola (Brassicanapus L.) growth and yield can be enhanced by, amongst others, choosing the correct rate, source, and timing of N fertilizer. Limited research exists on the effects of nitrogen (N) source on canola growth and yield properties when grown under conservation agriculture. This study compared the performance of different N fertilizer sources on canola biomass production, seed yield, and oil content. Field trials were conducted from 2016 to 2019 at five sites in the Western Cape Province of South Africa which is characterized by a Mediterranean climate. Nitrogen fertilizer source had no effect (p > .05) on biomass production or oil content at any site.Sufficient soil water levels and warm daily temperatures led to greater biomass production regardless of nitrogen source. Oil content was determined by the presence of rainfall during the flowering and seed filling stages. The effect of N source on yield varied among sites in accordance with timing of fertilizer application in relation to rainfall. The urea + urease inhibitor N source led to greater (p < .05) yields than the urea N source without the inhibitor at the Darling site, regardless of the soil water conditions. Mean yield values of all seasons and sites indicated that urea + urease inhibitor fertilizer to be the most reliable N source to ensure optimal yields over the long-term.

show abstract

“…In wheat, Ercoli et al (2013) found higher nitrogen efficiency with the application of 30 kg ha -1 of the nutrient at the time of sowing and the remainder of the total top dressing dose. In canola, Kaefer et al (2015) observed an increase in the efficiency of nitrogen utilization in the preparation of grains by parceling, with one third at sowing and two thirds at top dressing (40 and 80 kg ha -1 ) applied at the fourth true leaf stage. Due to the supply of nitrogen in top dressing, Mantai et al (2015) state that the maximum efficiency of nitrogen fertilization in oats is obtained with the total dose supplied from 70 to 90 kg ha -1 of nitrogen, this variation being dependent on the condition of the agricultural year and the time of fertilization.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

Time of Nitrogen Supply in Yield and Industrial Quality of Oat Grains by Agricultural Condition

Kraisig

Silva

Carvalho

et al. 2020

JAS

View full text Add to dashboard Cite

The timing of nitrogen application in oats improves the efficiency of use of the nutrient, expressing the yield and industrial quality of grains. The objective of the study is to indicate the appropriate timing of nitrogen supply on the yield and industrial quality of oat grains, considering the use of low and high dose of nitrogen at sowing and favorable and unfavorable years for cereal growing in soybean/oat system. The experiment was conducted in the years 2016, 2017 and 2018, in Augusto Pestana, RS, Brazil. The experimental design was a randomized block with four replications in a 2 x 4 factorial, for two doses of nitrogen at sowing (5 and 25 kg ha-1), changing the top dressing dose by the total supplied of 70 kg ha-1, in the expectation grain yield of 4000 kg ha-1, with time of supply at 0, 10, 30 and 60 days after emergence. In an unfavorable and intermediate year for the growing of oats, it is necessary to increase the dose of the nutrient at sowing in order to favor greater amplitude of the time of application in top dressing. In a favorable year, whether low or high, this range of application is guaranteed. Regardless of the reduced and high dose of nitrogen at sowing, the greatest expression of grain and industry yield occurs with the nutrient applied at 30 and 35 days after emergence in an unfavorable year, 35 days in an intermediate year and 40 to 45 days in a favorable year, respectively.

show abstract

Canola response to nitrogen sources and split application

Cited by 3 publications

References 9 publications

Split nitrogen sources effects on nitrogen use efficiency, yield and seed quality of safflower (Carthamus tinctorius L.)

Split nitrogen sources effects on nitrogen use efficiency, yield and seed quality of safflower (Carthamus tinctorius L.)

Nitrogen source effects on canola (Brassica napus L.) grown under conservation agriculture in South Africa

Time of Nitrogen Supply in Yield and Industrial Quality of Oat Grains by Agricultural Condition

Contact Info

Product

Resources

About