**Acknowledgements**

The authors are highly thankful to Dr. M. Raveendran, Director of Research, Tamil Nadu Agricultural University (TNAU), for his valuable suggestions toward this chapter. We also acknowledge Dr. R. Sudhagar, Associate Professor and Head, Sugarcane Research Station, TNAU, and Dr. K. Ganesamurthy, Professor and Head (Retd.), Department of Rice, TNAU, for rendering supportive documents.
