Componentes de produção do girassol Embrapa 122-V2000 sob salinidade da água e adubação nitrogenada

Centeno, C.R.M.; Santos, João Batista dos; Xavier, Diego Azevedo; Azevedo, Carlos Alberto Vieira de; Gheyi, Hans Raj

doi:10.1590/1807-1929/agriambi.v18nsupps39-s45

Cited by 11 publications

(5 citation statements)

References 17 publications

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“…Nobre et al (2011) observed a linear reduction of the PROD with the increment of the EC of the irrigation water, obtaining 17.4 g/plant when the plants were irrigated with higher levels of EC. Centeno et al (2014) also observed similar results.…”

Section: Resultssupporting

confidence: 74%

Growth Rates and Sunflower Production in Function of Fertilization with Biochar and NPK

Furtado¹,

Chaves²

2018

JAS

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The use of alternative sources such as biochar can contribute to sustainable agriculture. The objective of this study was to evaluate the effect of fertilization with biochar in combination with mineral fertilizer, growth rates and yield of sunflower cv. Embrapa 122/V2000. The experiment was carried out in a protected environment of UAEAg/CTRN/UFCG in pots with a capacity of 20 dm 3 under a completely randomized experimental design, with treatments arranged in a factorial scheme (5 × 4) and four replicates corresponding to five doses of mineral fertilization 0, 25%, 50%, 75%, and 100% of fertilization indication with NPK (100, 300, and 150 mg kg ) and four doses of biochar, 0; 5% (400 g/pot); 10% (800 g/pot) and 15% (1100 g/pot) calculated on the basis of the soil volume. Fertilization with biochar promoted an increase in sunflower growth rates in the evaluation periods. The combination of 50: 150: 75 mg kg -1 of NPK and 400 g/pot of biochar promotes higher production of sunflower (23.91 g/plant).

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Section: Resultssupporting

confidence: 74%

Growth Rates and Sunflower Production in Function of Fertilization with Biochar and NPK

Furtado¹,

Chaves²

2018

JAS

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“…The reduction of dry phytomass from these ECw levels is closely related to the effects of the accumulation of the concentration of soluble salts, which is a limiting factor to the development of most crops. Thus, this behavior can be understood as a possible adjustment mechanism of the plant to reduce the effects of salinity, because plants undergo morphological and physiological changes such as reduction of biomass, when subjected to salt stress (Centeno et al, 2014). Similar result was reported by Távora et al (2004), who found reduction of dry phytomass in young soursop plants subjected to salt stress.…”

Section: Effect Of Saline Stress and Nitrogen Doses On Phytomass Prodsupporting

confidence: 80%

Quality of soursop (Annona muricata L.) seedlings under different water salinity levels and nitrogen fertilization

Veloso¹,

Nobre²,

Lima³

et al. 2018

Aust J Crop Sci

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The edaphoclimatic characteristics of the Brazilian Northeast region favor the exploitation of soursop, a crop that is appreciated by the population of the whole country. However, due to the water limitation in this region, it is necessary to study techniques that make saline water feasible in the cultivation of the species. The present study aimed to evaluate phytomass production and quality of soursop cv. 'Morada Nova' seedlings, irrigated with waters of different salinity levels and fertilized with nitrogen (N) doses. The experiment was carried out in a greenhouse at the Center of Sciences and Agri-food Technology of the Federal University of Campina Grande (Pombal-PB), using a randomized block experimental design, in 5 x 4 factorial scheme, which corresponded to five levels of water electrical conductivity-ECw (0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160 mg of N dm-3 of soil), with four replicates and two plants per plot. At 90 days after applying the treatments, the following variables were evaluated to assess the quality of the seedlings: fresh and dry phytomass of stem and leaves, dry phytomass of shoots (aerial parts), roots and total, and Dickson's quality index. Irrigation water with ECw of up to 2.0 dS m-1 allows the production of soursop seedlings, cv. 'Morada Nova', with acceptable reduction of growth. The N dose of 70 mg dm-3 stimulates phytomass production and quality of the seedlings. There was no significant interaction between the factors on the studied variables of seedlings at 90 days after application of the treatments. Water of 2.0 dS m-1 associated with nitrogen fertilization using 70 mg of urea dm-3 of soil should be used in the formation of soursop seedlings.

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“…Regarding the Embrapa 122 genotype, although there was no significant effect of irrigation water salinity on production variables in our study, the increase in irrigation water salinity had a negative linear effect on the production of achenes, the number of achenes, viable achenes and a mass of one hundred achenes of this genotype in pot experiments carried out in the same region (Nobre et al 2011;Travassos et al 2011;Centeno et al 2014). Meanwhile, the Multissol genotype was part of fourteen of the Embrapa Soja Sunflower Genotype Evaluation Assays in 12 states from north to south of Brazil and the DF from 2017 to 2018 (Carvalho et al 2018a).…”

Section: Discussioncontrasting

confidence: 64%

Productive characteristics of sunflower genotypes irrigated with different levels of saline water

et al. 2022

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Sunflower is suitable for family farmers from Northeast Brazil who are benefited by the production of grain and oil and is adequate for crop rotation and for honey production. The need for irrigation in this region leads to the realization of this study for evaluating the production components of four sunflower genotypes irrigated with different levels of water salinity. The study was carried out in the municipality of Remigio, Paraíba, Brazil, using a randomized block with split plots experimental design in a 5 x 4 factorial arrangement. Treatments consisted of five electrical conductivity levels of the irrigation water at 25 °C (L1 - 0.14 (reservoir water), L2 - 1.50, L3 - 2.50, L4 - 3.50, and L5 - 4.50 dS m- 1), and four sunflower genotypes (C1 - Embrapa 122-V2000, C2 - Olisun 03, C3 - AG 963, and C4 - Multissol) with three replicates. The irrigation water salinity levels tested did not influence the variables studied. Different values of the variables among sunflower genotypes were due to characteristics inherent to each genotype. Sunflower genotype Olisun 03 presented the highest oil content, while the lowest content was observed in Multissol.

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Componentes de produção do girassol Embrapa 122-V2000 sob salinidade da água e adubação nitrogenada

Cited by 11 publications

References 17 publications

Growth Rates and Sunflower Production in Function of Fertilization with Biochar and NPK

Growth Rates and Sunflower Production in Function of Fertilization with Biochar and NPK

Quality of soursop (Annona muricata L.) seedlings under different water salinity levels and nitrogen fertilization

Productive characteristics of sunflower genotypes irrigated with different levels of saline water

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