Gas exchange and water stress index in soybean cultivated under water deficit and soil compaction

ABSTRACT Water stress is intrinsically related to soil water availability which is determinant in gas exchanges, as well as soil compaction in soybean growth and development. This study aimed to evaluate the leaf gas exchange, water stress index, and dry mass accumulation of soybean cultivated in different daily irrigation depths and bulk density. The treatments were distributed in pots subdivided in a 4×4 factorial scheme: four levels of bulk density of the soil (1.0, 1.15, 1.30 and 1.45 g cm-3) and four daily irrigation depths (4.0, 5.0, 6.0- and 7.0-mm day-1), with three replications. Phys...

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