Application of different nitrogen (organic, chemical and integrated) nutritional systems and biofertilizer on yield components and yield of sunflower seed

Subject Areas :

Mansour Jalilvand ¹ , Jahanfar Daneshian ² , Hadi Asadi Rahmani ³ , Mohsen Yousefi ⁴

1 - Islamic Azad University, Takestan Branch, Department of Agriculture, Takestan, Iran
2 - Professor of Seed and Seed Improvement Research Institute, Agricultural Research, Education and Promotion Organization, Karaj, Iran.
3 - Member of the Faculty of Soil and Water Research Institute
4 - Islamic Azad University, Takestan Branch, Department of Agriculture, Takestan, Iran

Received: 2018-12-01 Accepted : 2019-05-06 Published : 2019-05-22

Keywords: Animal manure, nitrogen, Sunflower, Yield components, Azospirillum,

Abstract :

An experiment was conducted to investigate the effect of application of different nitrogen and biofertilizer systems on yield and yield components of sunflower seed in a split plot in a randomized complete block design with three replications. Nitrogen levels as the main factor in five levels including: N1: 100% nitrogen treatment (326 kg / ha urea), N2: 80% nitrogen (260 kg / ha urea), N3: 60% nitrogen (195 kg) Urea), N4: 80% N and 20% of manure (1.3 ton / ha) and N5: 60% N and 40% of manure (2.6 ton / ha) and application of azospirillum Sub-factor titles were considered at four levels: B1: non-application of azospirillum B2: inoculation with azospirillum, B3: foliar solution of azospirillum, B4: inoculation with fungal solution of azospirillum. The results showed that nitrogen fertilizer and azospirillum treatments had significant effect on the studied traits. So that treatment with 100% urea nitrogen source had the highest number of grains per head. Inoculation treatment with foliar application of azospirillium had the highest number of seeds per head. The results also showed that treatment with 100% urea nitrogen and 60% urea nitrogen fertilizer and 40% manure had the highest grain yield. Foliar treatments as well as seed inoculation + azospirillum had the highest grain yield, which were in the same statistical group.