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Microclimatic and agronomic evaluations in a coffee crop grown under unshaded and shaded conditions


The research aiming to obtain information on physical and biological interactions for different scales of time and space, of shaded and unshaded coffee crop in Mococa which represents a coffee producing area of São Paulo State, Brazil. The study will be done on experimental plots (1600 m2) of coffee plants (Coffea arabica L.) cv. Icatu Vermelho IAC 4045 will be study unshaded and shaded by Grevillea robusta (16x16m); rubber tree (16x16m); banana plants (8x8m) and coconut tree-dwarf (8x8m). The microclimatic measurements will be accomplished, to productivity and the quality of coffee cup, aiming to identify plants of low competition level adapted for cultivation associated with coffee. The microclimatic characterization will be concerned with measurements of the meteorological parameters (solar radiation, net radiation, wind speed, air and leaf temperatures and air moisture) for the different crop conditions, also the quantification of intercepted photosynthetic active radiation promoted by the shading plants. Yield aspects of the crops and yield indexes and cup quality will be evaluated during the growing seasons of 2005/06 and 2006/07 comparing with the unshaded coffee as well as an analysis of space variability inside of the associated systems will be done. (AU)

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