efeito de composto orgânico sobre a produção e características comerciais de alface americana effect of organic compost on crisp head lettuce production and commercial characteristics
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2004
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Abstract
Doses de composto orgânico foram avaliadas na produtividade e qualidade da alface americana em um ensaio em Três Pontas, de 08/07 a 30/08/02. O delineamento utilizado foi em blocos casualizados com quatro repetições, sendo os tratamentos constituídos por cinco doses de composto orgânico (0,0; 20,0; 40,0; 60,0 e 80,0 t ha-1). A massa fresca total evidenciou um efeito quadrático, na qual a produtividade máxima de 914,2 g planta-1, foi obtida com a dose de 59,4 t ha-1 do composto orgânico. Para massa fresca comercial, a máxima produtividade (634,3 g planta-1), foi obtida com a dose de 56,1 t ha-1. A maior circunferência da cabeça comercial (41,4 cm), foi obtida com a dose de 53,7 t ha-1. A dose de 42,7 t ha-1 proporcionou um comprimento de caule máximo de 3,9 cm. Diante desses resultados, pode-se concluir que o uso de 56,0 t ha-1 de composto orgânico aplicado em pré-plantio, proporciona aumento de rendimento e qualidade comercial da alface americana.
Doses of organic compost were evaluated on crisp head lettuce production and quality in an experiment conduced in Três Pontas, Brazil, from July 8>th to August 30th. The experimental design was in randomized complete blocks with four replicates, the treatments being constituted by five doses of organic compost (0.0; 20.0; 40.0; 60.0 and 80.0 t ha-1). Total fresh matter showed a quadratic effect, in which the maximum yield of 914.2 g plant-1 was obtained with the dose of 59.4 t ha-1 of organic compost. For commercial fresh matter, the maximum yield (634.3 g plant-1) was obtained with the dose of 56.1 t ha-1. The greatest commercial head circumference (41.4 cm) was obtained with the dose of 53.7 t ha-1. The dose of 42.7 t ha-1 caused a maximum stem length of 3.9 cm. These results permit to conclude that the use of 56.0 t ha-1 of organic compost applied in pre plant provides an increase in yield and commercial quality of crisp head lettuce.
Doses of organic compost were evaluated on crisp head lettuce production and quality in an experiment conduced in Três Pontas, Brazil, from July 8>th to August 30th. The experimental design was in randomized complete blocks with four replicates, the treatments being constituted by five doses of organic compost (0.0; 20.0; 40.0; 60.0 and 80.0 t ha-1). Total fresh matter showed a quadratic effect, in which the maximum yield of 914.2 g plant-1 was obtained with the dose of 59.4 t ha-1 of organic compost. For commercial fresh matter, the maximum yield (634.3 g plant-1) was obtained with the dose of 56.1 t ha-1. The greatest commercial head circumference (41.4 cm) was obtained with the dose of 53.7 t ha-1. The dose of 42.7 t ha-1 caused a maximum stem length of 3.9 cm. These results permit to conclude that the use of 56.0 t ha-1 of organic compost applied in pre plant provides an increase in yield and commercial quality of crisp head lettuce.
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yuri2004horticulturaefeito
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| Authors | ;Jony E. Yuri;Geraldo M. de Resende;Juarez C. Rodrigues Júnior;José Hortêncio Mota;Rovilson J. de Souza |
| Journal | research on biomedical engineering |
| Year | 2004 |
| DOI |
10.1590/S0102-05362004000100027
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