Performance of onion cultivars as a function of spacing between plants

Santos, Jandeilson Pereira dos; Grangeiro, Leílson Costa; Sousa, Valdívia de Fátima Lima de; Gonçalves, Francisco das Chagas; França, Francisco Diorge de; Cordeiro, Carlos J. X.

doi:10.1590/1807-1929/agriambi.v22n3p212-217

Cited by 8 publications

(7 citation statements)

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“…The values observed were lower than those found by Santos et al (2018), who evaluated the performance of onion cultivars as a function of plant spacing and observed that cultivar 'IPA 11' was more pungent than 'Rio das Antas', with PUNG values ranging from 6.06 to 6.92 and 4.85 to 5.67 μmol g -1 , respectively. Grangeiro et al (2008), evaluating the qualitative characteristics of onion genotypes in Mossoró/RN, also recorded a higher PUNG value for cultivar 'IPA 11' (7.60 μmol g -1 ) compared with that found in the present study.…”

Section: Resultscontrasting

confidence: 71%

Agronomic and Qualitative Performance of Densely Cultivated Onion Cultivars as Affected by Potassium Fertilisation

et al. 2019

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The increase in plant density, combined with the use of hybrids in onion cultivation, has provided significant gains in yield, with a direct impact on the amount of absorbed macronutrients. The present work aimed to evaluate the yield and quality of two onion cultivars under a densified system as a function of potassium doses supplied via fertirrigation. A randomized complete block design was used in a 2 x 7 factorial scheme with four replications. The treatments consisted of two cultivars (IPA 11 and Rio das Antas) and seven potassium doses (0, 70, 140, 210, 280, 350 and 420 kg ha-1 K2O), provided by fertigation. The potassium doses that provided maximum total and commercial yields were 215 and 216 kg ha-1 of K2O, respectively. The soluble solids and the percentage of bulbs of classes 2, 3 and 4 were not influenced by potassium fertilization. There was a reduction in the percentage of non-commercial bulbs with the increase of potassium doses. The dose with maximum economical efficiency was 210.6 kg ha-1 of K2O, responsible for a commercial yield of 61.8 t ha-1.

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Section: Resultscontrasting

confidence: 71%

Agronomic and Qualitative Performance of Densely Cultivated Onion Cultivars as Affected by Potassium Fertilisation

et al. 2019

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“…This satisfactory yield achieved is due to the technologies applied along the study, such as the use of adapted cultivars, no-tillage, dense cultivation, weekly split fertilization applied via irrigation water and other cultural practices performed judiciously, whenever necessary. Santos et al (2018) found similar results, applying 150 kg ha -1 of P 2 O 5 , for the same cultivars and spacing with TY of 86.52, 96.52, 94.95 t ha -1 and MY of 84.55, 95.55, 94.58 t ha -1 for the cultivars IPA11, Rio das Antas and Serena, respectively, in soil with a high P( mehlich extractor ) content. The yields were also higher than those found by Costa et al (2008) for the cultivar Alfa Tropical (13.2 t ha -1 ) and by Silva (2015) for the cultivars Red Creole (14.23 t ha -1 ), Baia Periforme (21.90 t : - Rev.…”

Section: Resultssupporting

confidence: 65%

Agronomic performance of onion cultivars as affected by phosphate fertilization

et al. 2021

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Phosphorus (P) is an important nutrient for obtaining high yields and has been the one that most often limits production. The objective of this study was to evaluate the agronomic performance of onion cultivars as a function of phosphate fertilization. The experiments were installed at the Rafael Fernandes Experimental Farm, of the Federal Rural University of the Semi-Arid Region, Mossoró-RN, Brazil, from July to October 2016 and from June to October 2017. The design used was randomized blocks, in a 2 x 6 factorial scheme, with four replicates. The treatments consisted of the combination of two onion cultivars (IPA11 and Rio das Antas) and six P doses (0, 60, 120, 180, 240 and 300 kg ha -1 P 2 O 5 ). The economical doses of P, associated with the maximum marketable yields of onion were estimated at 212.45 and 207.65 kg ha -1 of P 2 O 5 , respectively for the cultivars IPA 11 and Rio das Antas. In general, the cultivar Rio das Antas was more productive than IPA 11, in the two growing periods.

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“…In addition to the selection of the cultivar, the sowing time appropriate to the climate and environment of the production area are essential factors for obtaining satisfactory yields (Ikeda, Kinoshita, Yamamoto, & Yamasaki, 2019). A stable environment, with low temperature and humidity variation, absence of heavy rain, low incidence of pests and diseases, as well as the use of appropriate technologies for irrigation, fertigation, sowing and density (Santos et al, 2018), also contribute to good plant development and increased productivity in onion cultivation.…”

Section: Introductionmentioning

confidence: 99%

Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

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Camargo³

et al. 2021

Acta Sci. Biol. Sci.

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The use of genotypes more adapted to climatic conditions can contribute to increase the yield of onion producers. The goal of this study was to evaluate the agronomic performance of 15 onion genotypes in the soil and climatic conditions of Guarapuava, state of Paraná. The study was conducted in the experimental area of Horticulture, Cedeteg campus, Universidade Estadual do Centro-Oeste (UNICENTRO), Guarapuava, state of Paraná, Brazil, from July to November 2018. The experimental design used was randomized blocks, with four replications, and the treatments consisted of four commercial cultivars Optima F1, Bella Dura, Sirius F1, Soberana F1 and eleven experimental genotypes N1, N2, N3, N4, N5, N6, N7, N8, N9, AF4241 and AF4243. Biometric characteristics of the plants, production components and early flowering were evaluated. Plants presented between 6 and 9 leaves, in which N1, N3, N4 and N6 had less than 7 leaves, differing statistically from the others. The cultivar Optima F1 and the genotypes N2, N3, N5, N6, N7 and N8 presented the tallest plants, with 66.1 to 76.0 cm. The pseudostem diameter did not differ significantly between genotypes, showing values between 15.2 and 20.4 mm. Total productivity was higher in genotypes N2, N6, N5, N4, N3, N7 with values from 43.6 to 50.3 t ha-1. The highest average bulb mass was found in N2, N4, N6, Sirius F1, Optima F1 and Soberana F1, with 74.2 to 91.1 g bulb-1. Regarding the commercial classification, the genotypes N2, N4, N5, N6 and the cultivars Sirius F1 and Soberana F1 presented more than 50% bulbs of classes 3+3C+4. Early flowering did not occur in any of the analyzed genotypes. The use of cultivars with high productive performance and adapted to climatic conditions, when handled properly, can result in greater yield and quality of bulbs.

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Performance of onion cultivars as a function of spacing between plants

Cited by 8 publications

References 12 publications

Agronomic and Qualitative Performance of Densely Cultivated Onion Cultivars as Affected by Potassium Fertilisation

Agronomic and Qualitative Performance of Densely Cultivated Onion Cultivars as Affected by Potassium Fertilisation

Agronomic performance of onion cultivars as affected by phosphate fertilization

Competition of onion genotypes in the soil and climatic conditions of Guarapuava, State of Paraná

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