Made available in DSpace on 2014-06-11T19:32:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-01-21Bitstream added on 2014-06-13T21:04:37Z : No. of bitstreams: 1 gomes_em_dr_botfca.pdf: 571364 bytes, checksum: 334335458e4bba12c5901076c9b3afc2 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Universidade Estadual Paulista (UNESP) / The objective of this research was it of studying the effect of doses crescent of applied potassium saw irrigation water in the cultures of banana trees cv 'Prata anã' and 'Maçã'. The experiment was conducted in field conditions, in an area belonging to the Department of Vegetable Production - UNESP, Campus of Botucatu/SP. The experimental delineamento was in blocks entirely casualizados, with five treatments and five repetitions, which consisted of five levels of manuring potássica (0, 200, 400, 600 and 800 g K20 plant-1). The obtained data were submitted to the variance analysis and the averages of the analyzed variables compared by the test of Tukey, to 5% of probability. Soon afterwards regression curves were adjusted, relating potassium doses and the variables answers. The obtained results indicate that the potassium application during the first cycle of the culture, didn't provide significant increases in the production variables and income of the culture, except for the diameter and medium length of the fruit. For the second cycle the fertirrigação promoted significant increases in the weight of the fruit, weight of the bunch, number of fruits for cluster, number of fruits for bunch, length and diameter of the fruit. The productivity of the cv 'Prata anã' it varied from 13,32 to 30,36 t ha-1 on the second year and the productivity of the cv 'Maçã' in the first year it varied from 14,98 to 18,31 t ha-1. It was evaluated, also, the behavior of the potassium in the soil, where it can verify that the banana trees in two cultivation cycles reduced the tenors of exchangeable K of the soil.

Orientador: Antônio de Pádua Sousa / Banca: João Carlos Cury Saad / Banca: Sarita Leonel / Banca: Hans Raj Gheyi / Banca: Antonio Ricardo S. de Andrade / Resumo:O objetivo deste trabalho foi o de estudar o efeito de doses crescente de potássio aplicado via água de irrigação bananeiras 'Prata anã' e 'Maçã'. O experimento foi conduzido em condições de campo, numa área pertencente ao Departamento de Produção Vegetal - UNESP, Campus de Botucatu/SP. O delineamento experimental foi em blocos inteiramente casualizados, com cinco tratamentos e cinco repetições, os quais consistiram de cinco níveis de adubação potássica (0, 200, 400, 600 e 800 g K20 touceira-1). Os dados obtidos foram submetidos à análise de variância e as médias das variáveis analisadas, foram comparadas pelo teste de Tukey, a 5% de probabilidade. Em seguida ajustaram-se curvas de regressão, relacionando doses de potássio as variáveis respostas. Os resultados obtidos indicaram que a aplicação de potássio durante o 10 ciclo da cultura, não proporcionou aumentos significativos nas variáveis de produção e produtividade das bananeiras, exceto para o diâmetro e comprimento médio do fruto. Para o 20 ciclo a fertirrigação promoveu aumentos significativos no peso do fruto, peso da penca, n0 de frutos por cacho, n0 de frutos por penca, comprimento e diâmetro do fruto. A produtividade do cv 'Prata anã' variou de 13,32 a 30,36 t ha-1 no 20 ano e a produtividade do cv 'Maçã' no 10 ano variou de 14,98 a 18,31 t ha-1. Avaliou-se, também, o comportamento do potássio no solo, onde pode constatar que as bananeiras em dois ciclos de cultivo reduziu os teores de K trocável do solo. / Abstract: The objective of this research was it of studying the effect of doses crescent of applied potassium saw irrigation water in the cultures of banana trees cv 'Prata anã' and 'Maçã'. The experiment was conducted in field conditions, in an area belonging to the Department of Vegetable Production - UNESP, Campus of Botucatu/SP. The experimental delineamento was in blocks entirely casualizados, with five treatments and five repetitions, which consisted of five levels of manuring potássica (0, 200, 400, 600 and 800 g K20 plant-1). The obtained data were submitted to the variance analysis and the averages of the analyzed variables compared by the test of Tukey, to 5% of probability. Soon afterwards regression curves were adjusted, relating potassium doses and the variables answers. The obtained results indicate that the potassium application during the first cycle of the culture, didn't provide significant increases in the production variables and income of the culture, except for the diameter and medium length of the fruit. For the second cycle the fertirrigação promoted significant increases in the weight of the fruit, weight of the bunch, number of fruits for cluster, number of fruits for bunch, length and diameter of the fruit. The productivity of the cv 'Prata anã' it varied from 13,32 to 30,36 t ha-1 on the second year and the productivity of the cv 'Maçã' in the first year it varied from 14,98 to 18,31 t ha-1. It was evaluated, also, the behavior of the potassium in the soil, where it can verify that the banana trees in two cultivation cycles reduced the tenors of exchangeable K of the soil. / Doutor