Qualidade De Cebola Em Função De Doses De Nitrogênio E Épocas De Plantio

Rodrigues, Gardênia Silvâna de Oliveira; Grangeiro, Leílson Costa; Negreiros, Maria Zuleide de; Silva, Ana Cláudia da; Júnior, José Novo

doi:10.1590/1983-21252015v28n327rc

Cited by 11 publications

(15 citation statements)

References 12 publications

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“…Trani, Breda Júnior and Factor (2014) mentioned that the highest yield from onion was obtained with the N rate of 200 kg ha -1 , which is higher than that used in our experiment (173 kg ha -1 N). The application of 135 kg ha -1 N promoted higher percentages of bulbs in class-3 onions (RODRIGUES et al, 2015). These authors also recommend up to 160 kg ha -1 K 2 O, which is lower than the quantity accumulated by the onion plants in the current study (188 kg ha -1 K 2 O).…”

Section: Resultsmentioning

confidence: 46%

Determination of Growth and Nutrient Accumulation in Bella Vista Onion

et al. 2018

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Knowledge of the nutrient uptake by crops at different stages of growth may provide the basis for rational application of fertilizers, which may lead to reduced production costs and improved use of fertilizers by plants. Based on this knowledge, we conducted this study to determine the biomass and nutrient accumulation curve of the onion cultivar Bella Vista in a system of transplanted seedlings. The experiment was carried out in Ituporanga-SC, Brazil, by using a randomized block design with three replicates. Eleven plant collections were carried out throughout the crop cycle. The variables evaluated included plant length; total dry biomass of leaves, bulbs, and roots; and concentrations of macro- and micronutrients. The maximum dry biomass accumulation in the shoots and bulbs at 140 days after transplanting (DAT) was 4.26 and 27.41 mg per plant, respectively, which contributed to 13% and 85% of the whole plant dry biomass at the end of the cycle, respectively. Potassium (K, 521.6 mg) was accumulated in the largest quantity per plant, followed by nitrogen (N, 465.7 mg), calcium (Ca, 253.3 mg), sulfur (S, 109.0 mg), magnesium (Mg, 86.9 mg), and phosphorus (P, 76.5 mg). The micronutrient accumulation was as follows: iron (Fe, 6,227.5 µg), boron (B, 902.3 µg), zinc (Zn, 573.7 µg), manganese (Mn, 573.7 µg), and copper (Cu, 241.4 µg).

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Section: Resultsmentioning

confidence: 46%

Determination of Growth and Nutrient Accumulation in Bella Vista Onion

et al. 2018

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“…Different results were observed by Bolandnazar et al (2012), Rodrigues et al (2016) and Benti (2017), who identified reduction of SS with the increase in N doses.…”

Section: Resultsmentioning

confidence: 67%

Yield and quality of densely cultivated onion cultivars as function of nitrogen fertilization

Gonçalves

Grangeiro

Sousa

et al. 2019

Rev. bras. eng. agríc. ambient.

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Nitrogen exerts a marked influence on the yield and quality of the onion. The present work was developed from June to October 2016, aiming to evaluate the yield and quality of two cultivars of onion under a system densified as a function of nitrogen doses in Mossoró, RN, Brazil. A randomized block design was used in a 2 x 7 factorial scheme, with four repetitions, corresponding to two cultivars (IPA 11 and Rio das Antas) and seven nitrogen doses (0, 45, 90, 135, 180, 225 and 270 kg ha-1 of N), provided by fertigation, with four repetitions. The dose of 92 kg ha-1 of N provides the highest total and marketable yields of bulbs. Nitrogen fertilization increases the concentrations of N, chlorophyll a, b and total in the leaves of the onion, as well as the percentage of bulbs of classes 3 and 4 and the pungency, reducing the percentage of bulbs of class 2 and non-commercial. The doses of 108 and 82 kg ha-1 of N provide the highest rates of return for ‘IPA 11’ (R$ 2.07) and ‘Rio das Antas’ (R$ 2.41), respectively.

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“…In onion, the absorption of nitrogen is surpassed only by that of potassium (Pôrto et al, 2007), and it is the nutrient that most affects bulb yield, health and quality (Resende et al, 2008). However, excessive quantity may limit bulb yield and increase post-harvest losses (Souza & Resende, 2002), whereas its deficiency may reduce bulb growth rate (Rodrigues et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Yield of onion in soil with cattle manure and nitrogen

Belem

Guimarães

Chaves

et al. 2020

Rev. bras. eng. agríc. ambient.

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Onion is the third vegetable crop in economic importance for Brazil, only behind potato and tomato, and responds with increased production to the use of organic and mineral fertilizers. The objective of this study was to evaluate the effect of doses of cattle manure and nitrogen (N) on onion growth and yield. The experimental design used was randomized blocks, in 6 x 2 factorial scheme, corresponding to six doses of cattle manure (0; 10; 20; 30; 40 and 50 t ha-1), in the presence and absence of N, with four repetitions. The variables studied were: shoot fresh and dry masses, total and marketable bulb yields, percentage of bulbs classified and leaf N content. There was an interactive effect (p ≤ 0.05) of cattle manure and N doses on shoot fresh and dry masses, total and marketable yields, classification of bulbs according to transverse diameter and N concentration in onion bulbs. The optimal dose for marketable yield of bulbs is 27 t ha-1 of cattle manure in the presence of N.

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Qualidade De Cebola Em Função De Doses De Nitrogênio E Épocas De Plantio

Cited by 11 publications

References 12 publications

Determination of Growth and Nutrient Accumulation in Bella Vista Onion

Determination of Growth and Nutrient Accumulation in Bella Vista Onion

Yield and quality of densely cultivated onion cultivars as function of nitrogen fertilization

Yield of onion in soil with cattle manure and nitrogen

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