In recent studies, irradiated polysaccharides have mainly been applied in hydroponic or spraying systems for some specific type of crops only. Hence, more studies are desired to establish the optimum conditions for use of such materials as plant growth promoters. In this regard, the growth promotion activity of radiation depolymerized alginate has been investigated for on tomato, spinach, mung dal, jute, pumpkin, egg plant, green chilli, red chilli, cabbage and cauliflower plants up to 30 to 90 days. The growth promotion activity of these plants was tested on various growth parameters which are averages of plants height, number of leaves & stems, leaves area, vine’s thickness, root length, size of fruits, number of fruits, harvest time, first flowering, wet & dry weight yield. Solution of SA irradiation at 5 to 50 kGy were prepared and applied by spraying system for the growth promotion of selective plants.

The plant showed insignificant changes for all the studied attributes after the treatment of nonirradiated SA on it and for the control plant.