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	Provedor de dados CIGR Journal (1) Scientia Agricola (1) Autor Arf,Orivaldo (1) Buzetti,Salatiér (1) Crusciol,Carlos Alexandre Costa (1) Oduma, Okechukwu (1) Rodrigues,Ricardo Antonio Ferreira (1) Sá,Marco Eustáquio de (1) Mais... Palavra-chave Harrow (2) AGRICULTURAL AND BIORESOURCES ENGINEERING Keywords: empirical (1) Moldboard plow (1) No-till (1) Oryza sativa L (1) Performances (1) Plough (1) Regression (1) Soil type. (1) Yield components (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2003 (1) País Brazil (1) China (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Development of empirical regression equations for predicting the performances of disc plough and harrow in clay-loam soil CIGR Journal Oduma, Okechukwu. Abstract: The regression equations for predicting the performances of plough and harrow implements in clay – loam soil in South – East agro – ecological region of Nigeria were developed. This is to enable farmers, farm managers and users of farm machinery assess and select proper machinery based on soil type/ condition for good performance of the machine and to avoid unnecessary breakdown/failures or energy loss during operation and generally to optimize production at minimum cost. Results showed that for plough operated in clay – loam soil, the regression equation that can predict its various performance indicators are: field efficiency, Y = 0.067x2 – 0.7733x + 89.283; effective field capacity, Y = 0.0864x2 – 1.4406x +6.8173; theoretical field capacity, Y... Tipo: Info:eu-repo/semantics/article Palavras-chave: AGRICULTURAL AND BIORESOURCES ENGINEERING Keywords: empirical; Harrow; Plough; Performances; Regression; Soil type.. Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5390 Soil management and nitrogen fertilization for sprinkler-irrigated upland rice cultivars Scientia Agricola Arf,Orivaldo; Rodrigues,Ricardo Antonio Ferreira; Crusciol,Carlos Alexandre Costa; Sá,Marco Eustáquio de; Buzetti,Salatiér. The use of sprinkler irrigation for rice (Oryza sativa L.) crop is a relatively recent practice in Brazil. Therefore, crop soil and fertilization management are still not very well defined. Another problem is the inexistence of specific cultivars adapted to this cropping system. This study aimed to evaluate sprinkler-irrigated upland rice cultivars under different soil management practices and nitrogen sidedressing rates in relation to yield and grain quality. A randomized block design was used, arranged as a 3 x 3 x 5 factorial scheme, totaling 45 treatments consisting of the combination of three rice cultivars (Primavera, Confiança and Maravilha), three soil management systems (disk harrow + levelling harrow, moldboard plow + levelling harrow and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L; Yield components; Moldboard plow; Harrow; No-till. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200020 Registros recuperados: 2 Primeira ... 1 ... Última

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