Published: 1997-12-31

CIENCIA AGRARIA

Technological adoption in peasant systems

Daniel Cáceres, Felicitas Silvetti, Gustavo Soto, Walter Rebolledo, Horacio Crespo

123-135

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Economic and social evaluation of the project " Agricultural mechanization services for farmers living in the commune of Cuneo, IX Región of Chile"

Marco Antonio Fernández Navarrete, Marcelo Toneatti B., Rodrigo A. Arias Inostroza, Juan Lerdón Ferrada

136-145

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Energy cost of the most common mechanized agricultural operations in Chile

Edmundo Jorge Hetz, Alejandra Isabel Barrios

146-161

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Yield evaluation and spear height opening of fifteen asparagus genotypes in their fourth year of harvest

Aage Krarup H., Astrid Tamm R.

162-169

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Leaf area, root lenght and grain yield of Amaranthus hypocondriacus L. grown on a highly compacted soil

Fernando de León González, Fidel Payan Zelaya, Guillermo Pérez Jerónimo, Verónica Nava Rodríguez, Miguel Angel Aime

170-179

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Floristic, phytosociological and edaphic changes produced by grazing exclusión in a prairie of Valdivia, Chile

Carlos Ramírez G., Cristina San Martín P., Achim Ellies S., Roberto Mac Donald H.

180-195

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Effect of the use of a hydrogel on the leaching of nitrogen and potassium on winter wheat in a volcanic ash soil

Juan Nissen M., Roxana García Q.

196-202

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Comparative study of irrigation efficiency; California and Chilean central valley

Alejandro Valenzuela A.

203-212

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CIENCIA PECUARIA

Variation of nutritive value of main feedstufs for pig rations

Manuel I. Mata E., Hugo Bernal B., Rigoberto González G., Emilio Olivares S.

213-218

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Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile

L. A. Raggi, V. MacNiven, R. Rojas, G. Castellaro, M. Zolezzi, E. Latorre, V. H. Parraguez, G. Ferrando

219-226

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Whole crop barley silage in winter fattering hereford steers

Claudio Rojas G., Adrián Catrileo S., Oriella Romero Y.

227-234

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NOTAS TÉCNICAS

Detection of citrus red mite Panonychus citri (McGregor) (Acari: Tetranychidae) in southern Chile

Ramón Rebolledo R., Alfonso Aguilera P.

235-237

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