[show abstract][hide abstract] ABSTRACT: The objective of this research was to evaluate the effects of morphactin, on the growth and anatomical features of soybean plants ( Glycine max L. Merrill) cv. Crawford. Field experiments were conducted under different irrigation regimes (every 5 and 10 days) on soybeans ( Glycine max L. Merril) that were planted in a newly reclaimed sandy soil at the Experimental Farm at Suez Canal University, Egypt during seasons of 1998 and 1999. Different concentrations of the morphactin (0, 50 and 200 mg L<sup>-1</sup>) were added at 40 days after sowing by foliar application. The morphactin treatments significantly decreased the plant height (14.88 and 21.44% inhibition of stem elongation under the two irrigation regimes, respectively), while they increased the number of branches. The pod number plant<sup>-1</sup>, seed number plant<sup>-1</sup>, dry weight (g), nodule number plant<sup>-1</sup>, reducing sugar content (mg g<sup>-1</sup> DW) and total phenols (mg g<sup>-1</sup> DW) increased significantly in response to morphactin treatment at 200 mg L<sup>-1</sup>. Similarly, the thickness of the midrib, mesophyll, vascular bundle, xylem, cambium + phloem and xylem vessel in the main vascular bundle increased in response to treatment with morphactin at 200 mg L<sup>-1</sup>. Low irrigation regime (every 10 days) had adverse effect on the growth and anatomical features of soybean. Overall, it is recommended that 200 mg L<sup>-1</sup> morphactin can be used for the stable production of soybean ( Glycine max L. Merrill) in newly reclaimed sandy soils in Egypt.