Growth and accumulation of macronutrients in maize plants biofertilized with cassava wastewater/ Desenvolvimento e acumulo de macronutrientes em plantas de milho biofertilizadas com manipueira

The aim of this study was to evaluate the growth and nutrient accumulation in maize plants fertilized with cassava wastewater. The experiment was carried out under greenhouse from March to May 2011. The experimental design was completely randomized, in a factorial 2 (soil types: sandy loam and clay...

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Bibliographic Details
Published in:Revista brasileira de engenharia agrícola e ambiental 2014-05, Vol.18 (5), p.487
Main Authors: Barreto, Marcela T.L, Magalhaes, Adriana G, Rolim, Mario M, Pedrosa, Elvira M.R, Duarte, Anamaria de S, Tavares, Uilka E
Format: Article
Language:Spanish
Subjects:
Corn
Growth
Plants
Wastewater
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Summary:The aim of this study was to evaluate the growth and nutrient accumulation in maize plants fertilized with cassava wastewater. The experiment was carried out under greenhouse from March to May 2011. The experimental design was completely randomized, in a factorial 2 (soil types: sandy loam and clay loam) x 4 (doses of cassava wastewater: 0; 11.2; 22.4 and 44.8 [m.sup.3] [ha.sup.-1]) arrangement, with eight replications. The variables analysed consisted of: plant height, stem diameter, number of leaves, fresh and dry mass of shoot and N, P, K, Ca and Mg content in leaf tissue. The use of cassava wastewater contributed to reduce plant height and increase both fresh mass of shoots and potassium content in leaf tissue. Increase in shoot fresh was higher in sandy loam soil. Key words: Manihot esculenta Zea mays wastewater cassava Objetivou-se, neste estudo, avaliar o desenvolvimento vegetativo e o acumulo de macronutrientes em plantas de milho submetidas as doses de manipueira. O experimento foi conduzido em ambiente protegido no periodo de marco a maio de 2011. O delineamento experimental foi inteiramente casualizado em esquema fatorial 2 (tipos de solo: franco-arenoso e franco-argiloso) x 4 (doses de manipueira: 0; 11,2; 22,4 e 44,8 [m.sup.3] [ha.sup.-1]), com oito repeticoes. As variaveis analisadas foram: altura das plantas, diametro de colmos, numero de folhas, materia fresca e materia seca da parte aerea das plantas e teores de N, P, K, Ca e Mg no tecido foliar. O aumento das doses de manipueira elevou o conteudo de massa fresca, o teor de nitrogenio e potassio da parte aerea das plantas, mas diminuiu a altura das plantas e o teor de magnesio na parte aerea das plantas. Os acrescimos de materia seca e de calcio na parte aerea das plantas foram maiores no solo franco-arenoso. Palavras-chave: Manihot esculenta Zea mays agua residuaria mandioca
ISSN:1415-4366