('Eva', 'Condessa', 'Princesa', 'Rainha', 'Imperial Gala', 'Daiane', e 'Baronesa') ('Eva', 'Condessa', 'Princesa', 'Rainha', 'Imperial Gala', 'Daiane', and 'Baronesa')
ResumoO milho destinado à produção de espigas verdes apresenta valor de comercialização maior que o milho grão e a demanda ocorre durante todo o ano. Devido à baixa disponibilidade de cultivares específicas e a importância das informações a respeito do cultivo do milho-verde, esse trabalho teve por objetivo avaliar características agronômicas e de desempenho produtivo de cultivares de milho para ser colhido verde nos sistemas de produção orgânico e convencional. Os experimentos foram desenvolvidos no Pólo Regional do Extremo Oeste pertencente à Agência Paulista de Tecnologia dos Agronegócios, em Andradina-SP, durante dois anos agrícolas. O delineamento experimental foi em blocos casualizados, em esquema fatorial 7X2, com quatro repetições. Os tratamentos foram constituídos pela combinação de sete cultivares de milho: AG1051, AG4051, XB7116, 20A55, BM3061, 2B587 (híbridos), Cativerde 02 (variedade) e dois sistemas de cultivo (orgânico e convencional). No sistema orgânico as cultivares foram mais tardias, com menor desenvolvimento e produtividade. Destacaram-se as cultivares 2B587 e BM 3061 com número total de espigas por hectare superior em 14 e 9%, respectivamente. A cultivar 2B587 foi a mais precoce, com plantas mais baixas e BM3061 apresentou espigas com maior diâmetro e comprimento. As cultivares AG4051 e Cativerde 02 apresentaram plantas mais altas e menos produtivas tanto no sistema convencional quanto no sistema orgânico. As cultivares BM3061, 2B587, XB7116 e AG1051 podem ser recomendadas para os dois sistemas, por serem as mais produtivas em ordem decrescente. Palavras-chave: Zea mays L., híbrido, genótipo, ambiente AbstractThe corn used in the production of green ears presents a higher commercialization value compared to corn grain and its demand occurs throughout the year. Due to a small specific cultivation availability and the lack of important information regarding this kind of cultivation, this work has had the objective to evaluate the agronomic characteristics and the production performance in the cultivation of corn to be harvest green in both organic and conventional systems. The experiments have been conducted in "Agência Paulista de Tecnologia dos Agronegócios-Polo Regional do Extremo Oeste", in Andradina-SP, for two agricultural years. The experimental design adopted was in occasionals blocks with 4 1 Pesquisadores Científicos, Drs.,
In pineapple cultivation, it is common to cover the fruit with newspaper, in order to avoid scalding caused by sunburn. However, the scarcity of material and the large labor force required have led to the search of control alternatives. This study aimed to evaluate the use of shading screens in the production and quality of ‘Smooth Cayenne’ pineapple. A randomized blocks experimental design was used, with five treatments (fruits covered with newspaper and plants covered with screens with 35, 40, 50 and 80 % of shading), four replicates and two seasons (summer and winter). In the summer, the use of screens with 50 % of shading provided average gains of 22 and 39 % of total and commercial mass of crowned fruits per plant and gains of 22 and 40 % of total and commercial yield per hectare, respectively. The gradual increase in shading intensity resulted in a decrease in the qualitative attributes of the fruits, when compared to covering the fruits with newspaper. Screens with up to 50 % of shading can replace newspaper when covering the fruits to avoid scalding.
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