In semi arid and arid regions of the country, a vast land resource (39.54 m ha) is available which is underutilized, having good potential of expansion for quality production of several horticultural, medicinal, spices, ornamental and crops of economic importance. The horticulture can play vital role in diversification of these untapped natural resources. The development of arid horticulture is not very old; the published literature on many crops of economic importance and their multiplication is also scanty. Looking to prospects of such underutilized crop, its propagation methodology should be standardized for large scale plantation through availability of quality planting material. The work on production technology of underutilized arid horticultural crops in limited and scattered. Therefore, an effort was made to compile the work done so far in the field of multiplication of semi- arid and arid horticultural plants with special reference to Indian scenario in the form of a book to develop the knowledge base of all those involved in research and development of cold and hot arid lands. This book will be useful for the scientists, teachers, researchers, students, growers, policy makers and also for the personnel engaged in nursery management. The contributors of different s included in the book are well known personality in their field.

Semiconductors comprising elements from groups II and VI of the periodic table and having a large energy gap (e g ZnSe) are generating intense R&D activity world-wide largely as a result of their blue green diodes. To review the accumulating knowledge and provide an up-to-date state-of-the-art picture 34 scientists from leading research groups in the USA, Europe and Japan have pooled their knowledge under the editorship of Dr. Bhargava. The book is illustrated, structured for reference and deeply indexed.