Título:	Effect of polymers associated with N and K fertilizer sources and Dendrathema grandiforum growth and K, Ca and Mg relations.
Autor:	SITA, R. C. M. REISSMANN, C. B. MARQUES, R. OLIVEIRA, E. B. de TAFFAREL, A. D.
Año:	2005
Referencia:	Brazilian Archives of Biology and Technology, Curitiba, v. 48, n. 3, p. 335-342, 2005.
Descripción:	This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass, macronutrient uptake were noticed, regardless substrate or nutrient source.
Thesagro:	Fertilizante
Palabras clave:	Hidrogel Polyacrylamida Crysanthemum Macronuutriente
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CNPF)