CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
Edited and published by Instituto de Investigaciones Agropecuarias (INIA), Ministerio de Agricultura, Chile

VOLUME 50 - ISSUE 1
Pages 1 - 90
Enero - Marzo 1990

RESEARCH ARTICLES
Yield and chemical composition of oats (Avena sativa L.), at different stages of maturity
Authors: Juan Carlos Dumont L. y Francisco Lanuza A.
Levels of phosphorus and potassium on subterranean clover, in the Andes foot-hills of the BiobÝo Region
Authors: Hern├ín Acu├▒a P., Patricio Soto O., Germ├ín Klee G., Nicasio Rodr├şguez S., Carlos Ovalle M. y Germ├ín Mart├şnez R.
Faecal losses of grains in lactating cows fed corn silage, harvested at to stages of maturity
Authors: Claudio Wernli K. y Alejandra Atria L.
Sequential sampling plan for the control of the mites Panonychus ulmi (Koch) and Tetranychus urticae Koch, on nectarines varo Armking
Authors: Ren├ę Vargas M. y Fernando Rodr├şguez A.
Presence-absence sequential sampling for Panonychus ulmi (Koch) and Tetranychus urticae Koch, on nectarines varo Armking
Authors: Ren├ę Vargas M. y Fernando Rodr├şguez A.
Effect of NPKS fertilization on the natural grasslands of Magallanes and its modification due to soil and climatic factors
Authors: Emilio Ruz J. y Nilo Covacevich C.
Yield losses produced by rusts, cereal aphids and Barley Yellow Dwarf Virus (BYDV) on two wheat cultivars (Triticum aestivum L.)
Authors: Marcos Gerding P., Mario Mellado Z. y Ricardo Madariaga B.
Response to calcium carbonate and phosphate fertilization of the mixture perennial ryegrass - white clover, on an Andisol. Nutrients uptake and forage quality
Authors: Ricardo Campillo R.
Naturally fermented colostrum vs. acidified colostrum preserved with formalin, for spring born calves
Authors: Francisco Lanuza A. , Norberto Butendieck B. Günther Stehr H. y Ren├ę Pineda A.
Survey of trace elements in agricultural resources of Chile. Waters and soils of the Elqui and Limari valleys, IV Region
Authors: Sergio González M.
Effect of fungicides on the black point problem, in spring wheat (Triticum aestivum L.), planted on irrigated soils in the south-·|central area of Chile
Authors: Mario Mellado Z. , Andr├ęs France I. e Iv├ín Matus T.
Biological evaluation of potassium and magnesium deficiencies in fruit trees
Authors: Rafael Ruiz S. y Edgardo Moraga S.
A survey of the quality of conserved forages as silage, in the South of Chile
Authors: Hernán F. Elizalde V. , Marisol González y. , Antonio Hargreaves B. , Juan C. Dumont L., Francisco Lanuza A. , Adrian Catrileo S., Alberto Mansilla M., Fernando Klein R. y Mauricio Hiriart L.
SCIENTIFIC NOTES
Leo-INIA/CCU, new malting barley cultivar
Authors: Edmundo Beratto M.