Effect of seed inoculation with nitragin and different levels of urea on physiological traits and biologic yield of maize, cv. 704 grown in cold and semi-arid regions

Subject Areas : New Finding in Agriculture

B. Mirshekari ¹ (Assist. Prof., Islamic Azad University, Tabriz Branch, Iran)
S. Baser ² (M. Sc. in Agronomy, Islamic Azad University, Tabriz Branch, Iran)
A. Javanshir ³ (Prof., Islamic Azad University, Tabriz Branch, Iran)

Received: 2015-12-01 Accepted : 2015-12-01 Published : 2009-07-23

Keywords: Chlorophyll, LAI, corn, Biological yield, Nitragin,

Abstract :

In order to study effect of seed inoculationwith nitragin and different levels of urea rate on physiological traits and biologic yield of maize (Zea mays L.), cv. 704, a factorial experiment was conducted based on RBCD. Treatments were six levels of urea rate (0, 30, 60, 90, 120, 150 kg/ha) and seed inoculation with nitragin or non-inoculation. Based on results, when seeds inoculated with nitragin, LAI in corn reduced from 2.4 to 2 in non-inoculated seeds. Treatment of inoculated seeds×application of 60 kg/haurea had the highest LAI (3.4). The highest chlorophyll content index obtained from interaction ofinoculation with nitragin+120 kg/haurea. Treatments of 150, 120 and 90 kg/haurea with 212, 202 and 191 g/m2 dry weight of ear had significant difference with control and 30 kg/haurea rate. Ear weight in inoculated seeds was 10% greater than non-inoculated ones. Biologic yield in corn was affected by seed inoculation and urea rate. The highest corn biomass (27t/ha) obtained from treatment fertilized with150 kg/haurea. It is recommended that in order to improvement of forage yield, corn must be inoculated with nitragin and fertilized with 150 kg/haurea.

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