Abstract
Twelve year old, six broad-leaved agroforestry tree species, growing at the same site, have revealed significant intergeneric diurnal variations in photosynthetic rate, amount of water transpired, leaf water potential (Y) and canopy temperature during the months of May and June. Significant mid-noon (13.30 hour) drop and substantial afternoon recovery up to 17.30 hour for all the physiological attributes were observed in all the six investigated tree species, namely, Grewia optiva, Morus alba, Celtis australis, Bauhinia variegata, Dalbergia sissoo and Toona ciliata.
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