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Design a Combined Machine for Seedbed Preparation CIGR Journal
Salama, dina Saber; Pibars, Sabreen KH; Abdelhay, Yossry B.; Tayel, mohamed Y.; Nasr, Gamal M..
Soil preparation is a very important part of the grain production process as it is necessary to maximize the possible yield. The mechanical soil preparation assists better water and air circulation and fertilizer dissolving in soils, which can increase the grain yield. The aim of this investigation was to design a new combined machine for seedbed preparation in one trip and assesses its effect on some soil physical properties and crop yield. Field experiments were carried out on clay loam, three diverse tillage methods were conducted under the same conditions of soil moisture content, operating speed and plowing depth. The tillage methods were: new combined (NCM), traditional method (TM) and no tillage method (NT). Results Clarified that the new combined...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Seedbed preparation; Combined machine; Soil physical properties; Onion yield; Clay loam soil..
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4591
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Site index and soil properties in young plantations of Eucalyptus grandis and E. urophylla in Southeastern Mexico Agrociencia
Delgado-Caballero,Carina E.; Gómez-Guerrero,Armando; Valdez-Lazalde,José R.; De los Santos-Posadas,Hector; Fierros-González,Aurelio M.; Horwath,William R..
Research on the ability of tropical soils to support fast-growing forests species is required to optimize, preserve and select lands for timber production. In this work site index (SI) of Eucalyptus grandis and E. urophylla plantations in Southeastern Mexico, was related to chemical and physical soil properties. Based on a joint model of SI vs. sand content, the fit suggests that SI improves as the sand content increases (p<0.01). Sand content of 28% in the surface soil (0-5 cm) and 24% in the sub-surface soil (5-30 cm) is a desired minimum for establishing highly productive stands. The best SI conditions were found on sandy soils with a sand content of 65 %. Other variables, such as soil bulk density, N mineralization and organic matter were also...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest plantations; Forest soils; Site productivity; Soil physical properties.
Ano: 2009 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000100007
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