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Previous issue date: 2018-07-23 === RESUMO: A PRESENÇA DE PALHA NA MUDA AFETA A QUALIDADE DOS SISTEMAS DE PLANTIO DE CANA-DE-AÇÚCAR? RESUMO - O processo de colheita mecanizada de mudas de cana-de-açúcar é decisivo na operação seguinte, a de plantio mecanizado da cultura, principalmente nos meses de outubro/novembro, nos quais há maior estresse hídrico e temperatura elevadas. Assim, a quantidade de palha retida no rebolo durante o processo de colheita mecanizada, pode reduzir a quantidade de gemas inviáveis por danos mecânicos e proteger as gemas das condições climáticas adversas. Objetivou-se, avaliar a qualidade de operação de plantio de cana-de-açúcar utilizando mudas com e sem palhada, com utilização de plantadoras e distribuidoras de cana-de-açúcar picada comparados ao plantio semi-mecanizado. O experimento foi conduzido na Fazenda Santa Clara, localizada no município de Pradópolis - SP, com cinco tratamentos sendo, plantadora mecanizada sem palha na muda, plantadora mecanizada com palha na muda, distribuidora mecanizada sem palha na muda, distribuidora mecanizada com palha na muda e plantio semi-mecanizado. A coleta de dados foi realizada em 50 pontos amostrais para cada tratamento, de acordo com as premissas do Controle Estatístico de Processo. A quantidade de gemas inviáveis e as falhas no estande reduziram com a presença de palha no rebolo. A presença de palha no rebolo possibilita o aumento do potencial da área plantada. Dessa forma, a presença de palha na muda melhorou a qualidade do plantio de cana de açúcar. PALAVRAS-CHAVE: cartas de controle, distribuidora, plantadora, Saccharum officinarum === ABSTRACT: THE PRESENCE OF STRAW TRASH ON SEEDLINGS AFFECTS THE QUALITY OF SUGARCANE CROP SYSTEMS? ABSTRACT - The process of sugarcane seedlings mechanized harvesting is decisive in the next operation, which is the mechanized crop planting, mainly in the months of October/November, when the plants experience higher water stress and elevated temperatures. Thus, the amount of straw retained in the stalk during the mechanized harvesting process can reduce the number of non-viable buds due to mechanical damage and protect the buds from adverse climatic conditions. The objective of this study was to evaluate the quality of the sugarcane planting operation using seedlings with and without straw, employing planters and distributors of chopped sugarcane compared to semi-mechanized planting. The experiment was carried out at Santa Clara Farm, located in the city of Pradópolis, SP, Brazil, with five treatments, being: mechanized planter without straw in the seedling, mechanized planter with straw in the seedling, mechanized distributor without straw in the seedling, mechanized distributor with straw in the seedling and semi-mechanized planting. The data collection was performed in 50 sample points for each treatment, according to the premises of the Statistical Process Control. The amount of unviable gems and faults in the stand reduced with the presence of straw on the stalk. The presence of straw in the stalk makes it possible to increase the potential of the planted area. Thus, the presence of straw in the seedling improved the quality of sugarcane cropping. KEYWORDS: control letters, distributor, planter, Saccharum officinarum === Minter: 834320
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