Effect of different irrigation and plant density on yield and yield components of Karoun hybrid at Dezful weather conditions

Subject Areas :

Mahmoud Mousavi Ghanavati ¹ (. Coach of Agronomy, Khuzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran.)
Shahram Lak ² (Associatet of Prof, Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran)

Received: 2015-09-16 Accepted : 2015-11-06 Published : 2014-11-22

Keywords: Water stress, Plant density, leaf area index, Grain weight, Hybrid Karoun,

Abstract :

In order to determine the best irrigation and plant density on yield and yield components of hybrid maize Karun plot experiment in a randomized complete block design with three levels of irrigation (watering 1-70 mm evaporation from pan 2. 90 mm evaporation irrigation of 110 mm evaporation from evaporation pan 3) as the main treatment and four densities (9-8-7-6 per square meter) as sub-plots with three replications with three replications was conducted in 2014. The results showed that the number of kernels per row irrigation, seed weight, seed yield, biological yield, plant height, harvest index, leaf area index, number of rows per ear and ear length had a significant effect. The effect of density on row number, grain weight, yield, biological yield, plant height, harvest index, leaf area index, number of rows per ear and ear length was significant. The highest average grain yield 9756 kg per hectare to eight plants per square meter density belonged to 70 mm evaporation statistically with a density of eight plants per square meter with 90 mm evaporation was analyzed in a group and the lowest with an average of 6393 kg per hectare the density per square meter, with 110 mm evaporation which were not. According to the results, it is suggested to avoid the loss of irrigation water saving of 90 mm evaporation is used.