Effects of different levels and irrigation systems on yield, yield components and water use efficiency of corn

Nowadays with water shortage crisis, increased productivity in the agricultural sector is inevitable. The present study dials with the evaluation of two irrigation systems under different levels of water irrigation on yield, yield components and water use efficiency of corn. The experiments were conducted in a split plot design based on the Randomized Complete Block Design (RCBD) with three replications. The treatments were comprised of three levels of full irrigation, 85% and 70% in main plot and two irrigation systems, furrow and tape irrigation. According to the results the grain yield in drip (tape) irrigation was higher compared to the other system significantly. Applied water in I2 was 1470 m3/ha less compared to that in I1 and water use efficiency was increased 10.5%. In drip irrigation under I2 yield, weight of 1000 grains, number of seeds in a row of corn and number of rows of seed in corn decreased 4.9%, 3.6%, 7.1% and 6.8%, respectively compared to that under I1. According to the results, to achieve higher water use efficiency and less water consumption for corn production in the study region, drip irrigation under 85% of water requirement application in suggested.