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Influência da irriga??o e do genótipo na produ??o de castanha em cajueiro-an?o-precoce

DOI: 10.1590/S0100-204X2003000100008

Keywords: anacardium occidentale, soil water regimes, productivity, phenology.

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the influence of irrigation and genotype on the nut yield of tree dwarf cashew (anacardium occidentale l.) was evaluated in a three-year trial. three clones (cp 09, cp 76 and cp 1001) and four irrigation treatments (control - without irrigation, irrigation at one, three and five days interval) were studied. the experimental design was in randomized blocks, with split-split plots and four replications, irrigation levels in plots, clones in split-plot, each one with four plants, and years of production in split-split plots. the amount of water applied in three irrigated treatments was based on information from a class a evaporation pan. concerning cashew nut production, cashew dwarf clones did not show a differentiation as to irrigation treatments; clones cp 09 and cp 76 showed better performance than cp 1001 on stability of nut production; clone cp 76, independently of irrigation treatments used, showed less productivity than clones cp 09 and cp 1001.


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