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Featured researches published by Atsuo Suzuki.
Horticultura Brasileira | 2013
Siegfried Mueller; Anderson Fernando Wamser; Atsuo Suzuki; Walter Ferreira Becker
The influence of fertilization with poultry litter associated or not with mineral fertilization was studied on tomato yield and its components. Two experiments were carried out under field conditions in Epagri - Experimental Station of Cacador, Santa Catarina state, Brazil, during the 2006/07 and 2007/08 seasons in no-tillage system of randomized blocks design, in factorial 4x2, with four rates of poultry litter (0, 4, 8 and 12 t ha-1, at season 2006/07, and 0, 6, 12 and 18 t ha-1, at season 2007/08), and the complementation or not of mineral fertilization. The mineral fertilization treatments were done in order to achieve the recommended amounts for each area. The total, marketable, extra AA and extra A fruits yield, the average mass of marketable, extra AA and extra A fruits, and the nutrient content in the leaf diagnoses were evaluated. The application of the organic manure alone was not sufficient to obtain the highest yield of fruits. The amount of organic fertilizer to achieve maximum marketable fruit yield (86.9 t ha-1) was estimated to 16.2 t ha-1. The higher marketable yields (100.1 t ha-1) were obtained with the application of mineral fertilizer only or with all doses of organic manure supplemented with mineral fertilizer.
Horticultura Brasileira | 2009
Anderson Fernando Wamser; Siegfried Mueller; Walter Ferreira Becker; Janaína Pereira dos Santos; Atsuo Suzuki
The effects of plant spacing and number of bunches per stem of tomato plants vertically conducted with polypropylene cord were evaluated on fruit yield and quality. Experiments were carried out during the 2006/2007 and 2007/2008 growing seasons, at Epagri-Cacador Experimental Station, Santa Catarina State, Brazil. The treatments consisted of a combination of three plant spacing (30, 45 and 60 cm), four topping heights (no topping, and topped at 5th, 7th and 9th bunch per stem) and the cultivars Debora Max and Nemo Netta in 2006/2007 and the cultivar Takii 92 in 2007/2008. Total, marketable and unmarketable yield, marketable mean weight, and the percentage of marketable and unmarketable fruits were evaluated. There was no significant interaction between cultivars, topping heights and plant spacing. Reduction in row plant spacing from 60 to 45 cm increased the marketable tomatoes from 15.2 to 17.2%, without affecting the fruit quality. The number of bunches per stem did not affect marketable yield.
Horticultura Brasileira | 2018
Anderson Fernando Wamser; Janice Valmorbida; Atsuo Suzuki; Leandro Hahn; Siegfried Mueller; Walter Ferreira Becker; Anderson Luiz Feltrim; Marcos Mattos Ender
O manejo correto de plantas no sistema de pulverizacao mecanizada do tomateiro e um aspecto que necessita de estudos, visando melhorar o controle de doencas e insetos-praga, bem como proporcionar alta produtividade e qualidade de frutos e retorno economico ao produtor. O objetivo deste trabalho foi determinar a melhor densidade e arranjo de plantas para a pulverizacao mecanizada do tomateiro tutorado verticalmente. Dois experimentos foram realizados nas safras 2013/14 e 2014/15 em Calmon, SC. Os tratamentos, na safra 2013/14, consistiram de um fatorial 4 x 2, combinando quatro densidades de plantas (10.753, 12.903, 16.129 e 21.505 plantas ha -1 ) e dois arranjos de plantas tutoradas verticalmente (fila simples e fila dupla). Na safra 2014/15, os tratamentos consistiram de um fatorial 5 x 2, representado pela combinacao de cinco densidades de plantas (10.753, 12.903, 16.129, 21.505 e 32.258 plantas ha -1 ) e de dois arranjos de plantas tutoradas verticalmente (fila simples e fila dupla). Avaliou-se a produtividade total, comercial (extra AA e extra A) e descarte, a massa media de frutos comerciais (extra AA e extra A), a severidade de doencas foliares e procedeu-se a analise economica dos tratamentos. O arranjo de plantas em fila dupla, para a pulverizacao mecanizada do tomateiro, proporciona maior produtividade de frutos comerciais e com maior porcentagem de frutos de melhor classificacao, em comparacao ao arranjo de plantas em fila simples. A maxima produtividade de tomates pode ser obtida na densidade de aproximadamente 34.000 plantas ha -1 , embora a densidade em que se obtem o maior retorno economico e estimado em 23.000 plantas ha -1 . Maior severidade de mancha bacteriana e septoriose sao observadas no arranjo de plantas em fila dupla, em relacao ao arranjo de plantas em fila simples. O aumento da densidade de plantas aumenta a severidade de mancha bacteriana e de pinta preta.
Horticultura Brasileira | 2011
Walter Ferreira Becker; Siegfried Mueller; Janaína Pereira dos Santos; Anderson Fernando Wamser; Atsuo Suzuki; Leandro Luiz Marcuzzo
Horticultura Brasileira | 2012
Anderson Fernando Wamser; Siegfried Mueller; Atsuo Suzuki; Walter Ferreira Becker; Janaína Pereira dos Santos
Revista de Ciências Agroveterinárias | 2015
Anderson Fernando Wamser; Walter Ferreira Becker; Siegfried Mueller; Atsuo Suzuki; Janice Valmorbida; Anderson Luiz Feltrim; Janaína Pereira dos Santos; Valderis Rosset; Amador Tomazelli
Horticultura Brasileira | 2015
Siegfried Mueller; Atsuo Suzuki; Anderson Fernando Wamser; Janice Valmorbida; Anderson Luiz Feltrim; Walter Ferreira Becker
Revista Agropecuária Catarinense | 2018
Siegfried Mueller; Atsuo Suzuki; Anderson Fernando Wamser; Janice Valmorbida; Anderson Luiz Feltrim; Walter Ferreira Becker
Agropecuária Catarinense | 2018
Siegfried Mueller; Atsuo Suzuki; Anderson Fernando Wamser; Janice Valmorbida; Anderson Luiz Feltrim; Walter Ferreira Becker
Revista Agropecuária Catarinense | 2017
Leandro Hahn; Atsuo Suzuki; Anderson Luiz Feltrim; Anderson Fernando Wamser; Sigfried Mueller; Janice Valmorbida