Resumen de Algodoeiro cultivado em solo tratado com calcário, lodo de esgoto e cádmio

Thiago Assis  Rodrigues N, Marcos Omir Marques, Fernando Almeida Muçouçah, Ivana Machado F

• português

  O objetivo do trabalho foi avaliar o acúmulo de nutrientes e metáis pesados em diferentes partes das plantas de algodoeiro (Gossypium hirsutum cv. IAC 22) cultivadas em solo que recebeu calcário e lodo de esgoto contaminado com cádmio. O experimento foi conduzido em casa de vegetacáo na FCAV/Unesp, em Jaboticabal-SP, em Latossolo Vermelho argiloso. Utilizou-se o delineamento experimental em blocos casualizados em esquema fatorial 3 x 2 + 1, sendo três doses de calcário calcinado, duas doses de lodo de esgoto e urna testemunha adicional, com três repe tiçSes. Procedeu-se à análise de variáncia e ao teste Tukey a 5% de probabilidade. As diferentes doses de calcário proporcionaram maiores acúmulos de macronutrientes na parte aérea e micronutrientes ñas raízes. A adicáo de lodo proporcionou o acúmulo de macronutrientes, especialmente, ñas raízes e parte aérea das plantas, e de Mn e Zn na raiz e parte aérea e apenas Mn ñas fibras. O acúmulo de Fe ñas raízes diminuíram com a aplicaçáo do lodo de esgoto. A calagem e o lodo proporcionaram acúmulo de Pb ñas raízes, parte aérea e fibras. Quando se considerou apenas a calagem, efeito semelhante foi encontrado para o Cd e Ni ñas fibras

• English

  The objective of the work was to evaluate the accumulation of nutrients and heavy metals in different parts of the cotton plants (Gossypium hirsutum cv. IAC 22) cultivated in soil that received lime and sewage sludge from municipal treatment plant plus cadmium. The experiment was carried out under green house conditions. The soil was a Clayey Red Latosol (Oxisol). The experimental design was the randomized blocks. The treatments were organized in a 3x2+1 factorial scheme (three lime rates, two sewage sludge rates and a Control treatment), all with three replications. The variance test was made by F test and means comparisons by Tukey test (p< 0.05). The different lime rates provided larger macronutrientes accumulations in the shoot and micronutrients in the roots. The sewage sludge addition provided the macronutrients accumulation, especially, in the roots and shoot of the plants, and of Mn and Zn in the root and shoot and just Mn in the fibers. The Fe accumulation in the roots decreased with the application of the sewage sludge. The liming and the sewage sludge provided accumulation of Pb in the roots, shoot and fibers. When it was just considered the liming, similar effect was found for the Cd and Ni in the fibers