Effect of Plant Density on Photosynthesis in Cashew*

The net photosynthesis and related parameters were studied in cashew trees (Anacardium occidentals L.) grown at five plant densities. There was significantly higher photosynthesis and transpiration in wider spaced trees parallel with higher irradiances. Stomatal conductance (g) did not show significant differences between the plant densities treatments. In cashew, plant density of 625 ha¹ (4x4 m) may be a threshold level for optimising productivity.