Effect of Foliar Applied Boron and Soil Applied Iron and Sulphur on Growth and Yield of Soybean (Glycine Max L. Merr)

Field experiments were carried out with soybean (Glycine max L. Merr) in sandy loam soil of Varanasi. Foliar application of boron (B) as boric acid (@ 50 and 100 ppm) and soil application of individual and combined levels of sulphur (S) @. 40 and 80 mg kg¹ soil) and iron ((a) 15 and 20 mg kg¹ soil) were made. In general, the foliar application of B @ 50 ppm showed an increase in morpho-physiological attributes accompanied by total dry matter production and seed yield. However, chlorophyll ‘a’ was found to be maximum at 100 ppm B. Besides these, the soil applied Fe and S caused significant increase in shoot height, root length, total dry matter production and test weight along with successive increase in oil yield over untreated (control) plants.