Document Type: Original Article

Authors

1 M.Sc. Plant Breeding, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

2 Ph.D. Students in Agronomy, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

3 Department of Agriculture, Miandoab Branch, Islamic Azad University, Miandoab, Iran

4 Ph.D. Students in Horticulture, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

Abstract

According to urgent need of corn to nitrogen and since this element play a main role in improving of yield corn, thus, in order to investigate the effect of different levels of urea on yield and yield components of corn 704, an experiment was conducted randomized block with three replications in cropping year of 2012. Experimental treatments included six levels of urea (0, 30, 60, 90, 120 and 150 kg.ha-1). Test parameters include the number of grain rows, number of grains per row, the number of grains per ear, grain weight, grain yield, biological yield and harvest index. Results showed that the effect of urea on the number of grain rows, number of grains per row, the number of grains per ear, grain weight, grain yield, biological yield and harvest index were significant. The highest amount of yield and yield components of corn was in the treatment of 150 kg.ha-1 of urea and lower in the control plots, respectively. To achieve the highest yield and yield components of 150 kg.ha-1 in urea is recommended.

Keywords

Anderson EL (1984).Corn root growth and distribution as influenced by tillage and nitrogen fertilization. Agronomy Journal. 79: 544 - 549.

Carruthers K, Prithiviraj B, Cloutier D, Martin RC, Smith DL (2000). Intercropping corn with soybean, lupine and forages: yield component responses. Agron. J. 12(2): 103-115.

Cocks JW (2003). Plant density effects on tropical corn forage masses, morphology and nutritive value. Agronomy Journal, 90: 93-96.

Imam Y (1995). An introduction on physiology of agricultural plants (translation) Shiraz university press.

kafiGhasemi A, Esfahani M (2003). Investigate the effect of nitrogen fertilizer on corn yield and yield component of corn in Guilan. Abstracts of 7th Iranian Congress of Agronomy.

Khan R (2001). Response of mustard and wheat to pre-sowing seed treatment with pyridoxine and basal level of calciume. Indian. Journal. Plant physiol. Vol. 6. No. 3PP: 300-305.

Lone N, Khan A, Hayat N A, Azam, SZ, Samiullah M (1999). Evaluation of effect of some B Vitamins on root development of mustard. Ann. Appl. Biol. 134 (Supplement): 30-37.

Majidian M, Ghadiri N (2003).Survey of Effect o f water stress and nitrogen at different growth stages on yield, yield components and random of water use efficiency in corn, Abstracts of Iranian Congress of Agronomy and Plant Breeding.

Mardi M (1999). Genetically studying of 418 pee of deci type of gene bank of agriculture faculty by using multi variant methods. Master thesis. Agriculture Faculty. University of Tehran.

Nandal S, Agarwal K (1991). Response of winter corn to sowing dates Irrigation and nitrogen level. Journal North-west India-India.55: 628-663.

Noor Mohammadi G, Siadat A, Kashani A (2003). Cereal crops, Vol. 1 Shahid Chamran University Press.

Onken, A. B, R. L. Matheson, and D, M. Nesmith.1985. Fertilizer nitrogen residual nitrate – nitrogen effects on irrigated corn yield. Soil Science. Society of America Journal.49:134-139.

Rajput R J (1992).Relationship between N and K in corn. Abstracts of Botany. J. 43: 1693.19.

Rending VV, Broadbent FE (1979). Protein and amino acid in grain of corn grown with various levels of applied N. Agronomy Journal. 71:509-512.

Samiullah  Khan NA, Ansari SA, Afridi MRK (1991). Pyridoxine augments growth yield and quality of mustard through efficient utilization of soil applied N P fertilizers. Acta Agronomy. Hung. 40: 111 – 116.

Sander DH, Allaway WH, Olson RA (1987). Modification of nutritional quality by environment and production practices.P.45.82.In R.A. Oison and K. J. Frey(ed).

Tavakkoli A (1995).Effects of azotes, phosphor and potassium fertilizer on growth and yield of corn, master thesis. Agriculture Faculty of Isfahan University.

Tsai CL, Tsai CY (1990). Endosperm modified by cross pollination corn to induce changes in dry matter and nitrogen accumulation. Crop Science. 30: 804-808.

West ML (2006). Response of corn hybrids to varying plant population densities. Field Crop. Abstact.42: 8569.

Yazdani M, Bahmanyar MA, Pirdashti H, Esmaili MA (2009). Effect of phosphate solubilization microorganisms and plant growth promoting rhizo bacteria on yield and yield components of corn. Inter. J. Biol. Life Sci.1:2.