A Term Paper

On

Effect on Depth of Sowing on the Yield of Wheat

 Muhammad Arifin Sandhi

 E-mail:asandhi@gmail.com

 Abstract

Wheat is the most important cereal crop of the world. Wheat grows well in different region in Bangladesh. Wheat cultivation is greatly affected by sowing depth. Sowing depth significantly influenced the seedling emergence and vigor index. Sowing seed deeper than 4 cm delayed & reduced seedling emergence & seed production. Seed placed at 8 cm depth resulted a greater degree (82%) of failure in emergence. Sowing at variable depths causes appreciable differences in grain yield. Sowing deeper than 4 cm greatly reduced grain yield. Plant emerged from 4 cm depth had produced the highest grain yield which was attributed to greater number of spikes per unit area and seeds per spikes. Deeper sowing caused in the number of seminal root but the total root length was significantly reduced. Deep sowing causes unnecessary elongation of stem between the seed and secondary roots. As a result the food reserves of the grain are taxed severely and seedling may even fail to emerge. When sowing at 4 inches reduced emergences by almost 40%.