African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

The effect of pellet fertilizer application on corn yield and its components

Reza-Bagheri1, Gholam Ali-Akbari2*, Mohammad Hossein-Kianmehr3, Zinol Abadin-Tahmasbi Sarvastani4 and Mehdi-Younessi Hamzekhanlu5
  1College of Abouraihan, University of Tehran, P. O. Box 3391653775, Tehran, Iran. 2Department of Agronomy and  Plant Breeding, College of Abouraihan, University of Tehran, P. O. Box 3391653775, Tehran, Iran. 3Mechanic of Agricultural Machinery, Aboureihan Campus, University of Tehran, P. O. Box 3391653775, Tehran, Iran. 4Department of Agronomy and Plant Breeding, University of Tarbiat Modares, P. O. Box 31485- 498, Karaj, Iran. 5Deparment of Agronomy and Plant Breeding science, College of Aburaihan,University of  Tehran, P. O. Box 3391653775, Tehran, Iran.
Email: [email protected]

  •  Accepted: 22 March 2011
  •  Published: 31 May 2011

Abstract

 

Increased use of chemical nitrogen fertilizers (N) in agricultural production continues to raise concerns, because of the risk of surplus N leaving the plant-soil system and thereby causing environmental contamination. Therefore, decreasing nitrate leaching from crop production fields, such as in corn fields, is of considerable importance. Against this backdrop, a field experiment was conducted to assess the effect of pelleted fertilizer, produced by mixing urea and dry cow dung manure, on corn yield and its components. The study was carried out, during the 2009 corn-growing season, at the experimental farm of College of Abouraihan, University of Tehran in Iran. The factorial design of the study comprised of randomized complete block with three replications. Factors this experiment involved: first factor was two levels of fertilizer application method which include pellet and mixed with soil, and second factor was four levels of nitrogen fertilizer pulse dry cow dung (46+600, 92+600, 138+600 and 184+600 kg/ha). The biological yield, grain yield, number of grains per ear, grain weight, harvest index, and grain protein content was calculated. Treatment T8 (184+600 kg/ha pelleted fertilizer) significantly produced better harvest index, highest 1000 grain weight, the maximum biological yield, the maximum grain yield and highest grain protein content per hectare. The use of pelleted fertilizer is therefore a better alternative to uncoated nitrogen fertilizer due to its slow and continuous nutrient release for plant uptake at different stages of its growth.

                                                                   

Key words: Biological yield, dry cow dung, urea, grain protein content, corn, grain yield.