Effect of limestone calcium and magnesium ratio on micronutrients in alfalfa

被引：13

作者：

Moreira, A ^{[1
]}

De Carvalho, JG ^{[1
]}

Moraes, LAC ^{[1
]}

Salvador, JO ^{[1
]}

机构：

[1] CPAA, Ctr Pesquisa Agroflorestal Amazonia Ocidental, Embrapa, BR-69011970 Manaus, Amazonas, Brazil

来源：

PESQUISA AGROPECUARIA BRASILEIRA | 2000年 / 35卷 / 10期

关键词：

Medicago sativa; fertilizer application; nutrient uptake;

D O I：

10.1590/S0100-204X2000001000017

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

This study evaluated the effect of limestone Ca:Mg ratios on micronutrients in alfalfa. A randomized block design was used with five relations of Ca:Mg ratios (1:0, 1:1, 2:1, 3:1 and 4:1) at a recommended limestone dosage of 3,900 kg ha(-1). An additional treatment was included at a ratio of 3:1 with the dosage of 7,800 kg ha(-1). All treatments had four replicates in a six-cutting number, in 35 days of interval. The variables analyzed were: concentration and quantity of B, Cu, Fe, Mn, and Zn in dry matter. The decrease of the concentration of B, Fe, Mn and Zn was obtained in the treatment that used twice the recommended dosage. The antagonic effect between Ca, applied as CaCO3, and Cu was not observed in the treatments. The concentration of micronutrients varied according to the cutting times.

引用

页码：2051 / 2056

页数：6

共 21 条

[1]

Allen S.E., 1976, GREENHOUSE TECHNIQUE

[2]

DEOLINDO JVP, 1992, REUNIAO BRASILEIRA F, P436

[3]

FAGERIA NK, 1987, PESQUI AGROPECU BRAS, V22, P667

[4]

Ferreira RD, 1999, PESQUI AGROPECU BRAS, V34, P995, DOI 10.1590/S0100-204X1999000600010

[5]

GOMES FT, 1995, C BRAS CIENC DOL 25, P1120

[6]

KORNELIUS E, 1992, PESQUI AGROPECU BRAS, V27, P241

[7]

Malavolta E., 1997, Avaliacao do estado nutricional das plantas principios e aplicacoes, V2nd

[8]

MALAVOLTA E., 1980, ELEMENTOS NUTR MINER

[9]

Marschner H., 1995, MINERAL NUTR PLANTS, V2nd

[10]

Moreira A, 1997, PESQUI AGROPECU BRAS, V32, P533

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