Agrociencia - vol.43 issue5

Table of contents
Agrociencia vol.43 n.5 Texcoco Jul./Aug. 2009

Water-soils-climate

	· Variation in soil carbon stocks in a toposequence Avilés-Hernández, Virginia; Velázquez-Martínez, Alejandro; Angeles-Pérez, Gregorio; Etchevers-Barra, Jorge; De los Santos-Posadas, Héctor; Llanderal, Tangaxuhan · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Crop science

	· Effect of types of nozzles on spray deposition on two soybean varieties in stage V3 Villalba, Juana; Martins, Dagoberto; Rodrigues, Andreia; Alves-Cardoso, Leonildo · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· *Reproductive biology of mexican oregano (Lippia graveolens* Kunth) in three exploitation conditions** Ocampo-Velázquez, Rosalía V; Malda-Barrera, Guadalupe X; Suárez-Ramos, Guadalupe · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Evaluation of two generations of cold tolerant sorghum hybrids and parental lines. I: genetic variability and adaptability León-Velasco, Humberto; Mendoza-Onofre, Leopoldo E; Castillo-González, Fernando; Cervantes-Santana, Tarcicio; Martínez-Garza, Ángel · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Agricultural machinery

	· Analytical estimation of optimal operation variables of a centrifugal fertilizer distributor, using the gradient method on multiple seeds Gómez-Gil, Jaime; de-Lózar-Escudero, Alfonso; Navas-Gracia, L. Manuel; Ruiz-Ruiz, Gonzalo · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Plant protection

	· *Etiology and management of tar spot (Phyllachora maydis* Maubl.) of maize in Guerrero State, México** Pereyda-Hernández, Juan; Hernández-Morales, Javier; Sandoval-Islas, J. Sergio; Aranda-Ocampo, Sergio; de León, Carlos; Gómez-Montiel, Noel · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Natural renewable resources

	· Myths and fallacies about the curve number hydrological method of the SCS/NRCS Paz-Pellat, Fernando · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Structural differences between caldenal patches of the rangeland and its influence on the seed bank, in the province of La Pampa, Argentina Morici, Ernesto; Doménech-García, Valeriano; Gómez-Castro, Gustavo; Kin, Alicia; Saenz, Alicia; Rabotnikof, Celia · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Socioeconomics

	· Sustainability of peasant's farms located in a natural reserve in Central Argentina Cáceres, Daniel M · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· México's Social accounting matrix 2004 Barboza-Carrasco, Irene; Vázquez-Alvarado, Jorge M. P; Matus-Gardea, Jaime A · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )