Investigation and Comparison of Water Productivity in Direct and Transplant Seeding of Corn in Different Irrigation Regimes

For study of yield¡ water consumption and water productivity of direct seeded and transplanted corn (basin) in different irrigation regimes¡ an experiment was carried out during the 2014-2015 growing season in the Agricultural Research and Education Center of KhorasaneRazavi province using a randomized complete block design with a split plot arrangement and four replications. This experiment was including of three irrigation levels treatments (75%¡ 100%¡ and 125% of water requirement) as the main plot and three method of planting treatments (transplanting 20-days¡ transplanting 30-days and direct seeded) as subplots. The results showed that in spring planting¡ the most water productivity of corn was achieved from the transplanting treatments with different significant at 1% level to direct seeding treatment. The yield of corn and grain in transplanting 20-days and transplanting 30-days were more than direct seeded (α=1%). The water used in the transplanting and direct seeding treatments have a significant difference. The transplanting method can be cause of water saving¡ but it is better to be done an economic analysis between direct and transplant seeding.