The present book has been designed to meet the requirement of post graduate and Ph.D student of Agricultural University. Soybean (Glycine max (L.) Meril) is one of the most important leguminous and oilseed crop, belong to family leguminoceae. It grows in three seasons in most part of the world. As per first known record, it is native of soybean is Asia and it emerged as domesticated crop around the eleventh century B.C. in Chinese. Soybean "The miracle golden bean of 20th century" has revolutionized the agriculture as well as generated economy of many countries. Plant protection during early...