Fertirrigação Nitrogenada E Potássica Na Cultura Do Pimentão Baseada No Acúmulo De N E K Pela Planta

Marcussi, Francisco F. N.; Godoy, Leandro José Grava de; Bôas, Roberto Lyra Villas

doi:10.15809/irriga.2004v9n1p41-51

Cited by 21 publications

(9 citation statements)

References 2 publications

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“…Proportionally, in the leaves of the plants irrigated with irrigation waters of EC 700 S cm -1 , K represented 41.34%; Na 19.53%; Cl 17.71%; Ca 16.98%; and Mg 4.44%. Marcussi et al (2004) also found similar levels working with nitrogen and potassium fertigation in onion crops. Thus, increases in the content levels of Na and Cl were observed, as well as reductions in the content levels of K, Ca and Mg in relation to the content levels of these same elements in the leaves of the plants irrigated with the water with EC of 200 S cm -1 .…”

Section: Effects Of Saline Irrigation On Onion Nutritional Statussupporting

confidence: 57%

Saline water irrigation in semiarid region: II – effects on growth and nutritional status of onions

et al. 2019

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The use of saline waters for the irrigation of crops such as onion is a common practice in the Brazilian semiarid region. However, the effect of the use of these waters on onion nutrition and growth has been underappreciated. This work aims to evaluate Ca2+, Mg2+, Na+, K+ and Cl- levels and onion growth in two Fluvisols under irrigation with waters of variable electrical conductivity and increasing values of sodium adsorption ratio. A greenhouse experiment was conducted in two Fluvisols cultivated with onion. After transplanting each plant was irrigated with saline waters, in a factorial arrangement 2 x 3 x 6, corresponding to two soils (sandy loam and silt clay loam), three values of electrical conductivity (EC - 200, 700 and 2,000 μS cm-1) and six levels of sodium adsorption ratio (SAR - 0, 5, 10, 15, 20 and 25 (mmolc L-1)0.5). Plants were collected at 90 days after transplanting and onion growth parameters as well Ca, Mg, K, Na and Cl levels were each measured. The SAR of the irrigation waters and the soil did not show any significant influence on the onion growth variables or on the levels of the evaluated elements. The increase in salinity of the irrigation water promoted a reduction in the growth variables of the evaluated onion cultivar. Increases in the levels of Ca, Na and Cl as well as a reduction in the level of K in the onion plant dry matter were all observed with increasing salinity of the irrigation water; however, the Mg content level was not affected. As the salinity of the irrigation water was the main factor affecting onion growth, an EC of 200 µS cm-1 is the limit to promote the best onion growth cultivated in both sandy and silt clay soils.

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Section: Effects Of Saline Irrigation On Onion Nutritional Statussupporting

confidence: 57%

Saline water irrigation in semiarid region: II – effects on growth and nutritional status of onions

et al. 2019

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“…Após a instalação dos extratores e o umedecimento do solo, o material foi incubado por um período de 24 h, quando foi aplicado um vácuo em torno de 70 kPa. Optou-se por aplicar este valor de vácuo por ser este próximo aos empregados por vários pesquisadores, para diversos tipos de solos (SILVA et al, 2000;MARCUSSI et al, 2004;SOUZA et al, 2006;MEDEIROS et al, 2009;QUEIROZ et al, 2009). Cerca de 12 h após a aplicação do vácuo, coletaram-se as amostras da solução de solo de cada extrator, sendo em seguida armazenadas em copos coletores previamente identificados.…”

Section: Methodsunclassified

Calibração de extratores providos de cápsula porosa para monitoramento da salinidade e da concentração de íons

et al. 2011

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Os resultados satisfatórios obtidos no monitoramento da salinidade e concentração de íons na solução do solo, usando extratores de cápsulas porosas, motivaram a realização deste trabalho, o qual teve como objetivo a obtenção de curvas de calibração para estes extratores monitorarem a condutividade elétrica e a concentração de nitrato e de potássio na solução de dois tipos de solo (Latossolo Vermelho-Amarelo Argissólico franco arenoso, e o outro como Cambissolo Eutrófico), em Mossoró - RN. As concentrações de nitrato utilizadas foram as mesmas nos dois solos (0; 84; 168; 252; 336; 420 e 504 mg L-1); quanto ao potássio, foram utilizadas concentrações diferentes no solo arenoso (0; 117; 234; 351; 468; 585 e 702 mg L-1) e no argiloso (0; 117; 234; 351; 468; 585; 702; 1.170; 1.755; 2.340; 2.925 e 3.510 mg L-1). A condutividade elétrica da solução do solo e a concentração de nitrato e de potássio foram estimadas com precisão satisfatória a partir da solução coletada com extratores providos de cápsulas porosas, sendo necessária uma calibração prévia para cada tipo de solo.

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“…According to Marcussi et al (2004) [14], mineral nutrition is essential to increase productivity and improve the quality of the harvested bell peppers, and play important roles in plant metabolism. Among the macronutrients, nitrogen is the second most demanded by vegetables [15] and is considered one of the most limiting nutrients for the bell pepper crop, because it influences the physiological processes that occur in plants and fruit production.…”

Section: Introductionmentioning

confidence: 99%

Growth and Development of Bell Peppers Submitted to Fertilization with Biochar and Nitrogen

Lima¹,

Cavalcante²,

Bonifácio³

et al. 2019

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The experiment was carried out in the greenhouse of the DEAg/UFCG, Campina Grande (PB), Brazil, to evaluate the growth and development of the bell pepper subjected to fertilization with biochar and nitrogen. The experiment was conducted in pots under greenhouse conditions. Treatments were arranged in a completely randomized design, in 4 × 4 factorial scheme, relative to four doses of biochar (0; 7; 14 and 21 m 3 •ha −1) and four doses of nitrogen (0; 40; 80 and 120 kg•ha −1), with three replicates. Considering the analysis of growth of bell pepper plants during the first 45 DAS, is recommended the average dose of biochar of 19 m 3 •ha −1 on vegetable behavior. Under the conditions of the experiment, nitrogen favored only the absolute growth rate of plant height and the stem diameter.

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Fertirrigação Nitrogenada E Potássica Na Cultura Do Pimentão Baseada No Acúmulo De N E K Pela Planta

Cited by 21 publications

References 2 publications

Saline water irrigation in semiarid region: II – effects on growth and nutritional status of onions

Saline water irrigation in semiarid region: II – effects on growth and nutritional status of onions

Calibração de extratores providos de cápsula porosa para monitoramento da salinidade e da concentração de íons

Growth and Development of Bell Peppers Submitted to Fertilization with Biochar and Nitrogen

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