Sweet corn hybrids, weed management and plant density effects on sweet corn yield and yield components in Hormozghan, Iran

Subject Areas : New Finding in Agriculture

H. R. Farhadi Afshar ¹ , H. Madani ² , M. H. Shirzadi ³ , E. Najafi ⁴

1 - M. Sc. in Agronomy, Islamic Azad University, Jiroft Branch, Iran
2 - Associ. Prof., Islamic Azad University, Arak Branch, Iran
3 - Assist. Prof., Islamic Azad University, Jiroft Branch, Iran
4 - Seed and Plant Improvement Institute, Karaj, Iran

Received: 2015-12-03 Accepted : 2015-12-03 Published : 2009-02-19

Keywords: Plant density, sweet corn, Weed control, Shimmer, KSc.431,

Abstract :

In order to determine of important agronomic characteristics of sweet corn hybrids and weed or without weed competition under different plant density at Iranian warm environment this experiment was conducted on 2006 at the HajiAbad plant research center, Hormozgan, Iran. The experiments were perform in a split split plot in contract to RCBD for 2 sweet corn (KSc.403 and Shimmer hybrids) as a main plots and weed control and non weed control on sub plots and three plant density 53,67 and 89 thousand plant per hectare as a sub sub plots with 4 replications. The results showed that the difference of 2 hybrids about seed yields, number of seed per row and number of row per ear were significant.  Then, weed control could increase the seed yield near 7.8%. Maximum yield of seed corn was about 9700 kg/ha for Shimmer hybrid at 89000 plant density per hectare under full weeds control condition. Finally the Shimmer hybrid of sweet corn showed better studied characteristics in compare to KSc.403, and Shimmer could produce the highest seed yield by increase the plant density from 53000 to 89000 too, but under weed control.

References:

1- کوچکی، ع.، رحیمیان، ح.، نصیری محلاتی، م. و خیابانی، ح. 1371. اکولوژی علفهای هرز(ترجمه). انتشارات جهاد دانشگاهی مشهد. 220 صفحه.

2- هاشمی دزفولی، س. ا.، عالمی سعید، خ.، سیادت، س. ع. و کمیلی، م. ر. 1380. اثر تاریخ کاشت بر پتانسیل عملکرد دو رقم ذرت شیرین در شرایط آب و هوایی خوزستان، مجله علوم کشاورزی ایران، جلد 32، شماره 4 (689-681).

3- Coloeil, J. R., Mckee, G. W. and Gahlen, J. H. 1994. leaf number and maturity in hybrid corn. Agron.65:233-236.

4- Duncon, W. G. etal. 1993. isolation and temperature Effects on maize growth and yield Crop Sci 13-187.

5- Earley, E. B., MCIL rath, W. O., Sief, R. D. and Hageman, R. H. 2001. effects of shade applied at different of plant development on corn production.crop.Sci.7:151-159

6- Gardner, E. H., Mansour, N. S., Mack, H. J., Jackson, T. L. and Burr, J. 2000. sweet corn Eastern. Oregon-east of cascades Oregon state university extension service. http://eesc. Orst. Edu.

7- Garrison, S. 2002. commercial vegetable production recommendations for New Jersey. Rugers coop. EXt. pub Eoo IR.

8- Johnson, G. A., Mortensen, D. A., Martin, A. R. and Young, L. G. 1993. The spatial and numerical distribution of weed seedling population in 12 Nebraska corn and soybean fields. Weed Sci. 33: 150-154.

9- Kiniry, J. R. and Ritchie, J. T.1985. sensitive interval of kernel number of maize -Agron.G.77:711-715

10- Kropff, M. J. and Lotz, L. A. P. 1993. Empirical models for crop – weed competition in modeling crop weed interaction. IRRI.

11- Major D. G., Beasley, R. W. and, Hamilton, R. I. 1991. Effect of maize maturity on radiation - use efficiency - Agron.J.83-365-903

12- Moeching, M. J. D. E., Stolenberg. M. B. and Larry, K. B. 1999. Variation in corn yield losses due to weed competition. Weed Sci. 45: 345-354.

13- Morris, T., Hamilton, G. and Harney, S. 2000. Optimum plant population for fresh market sweet corn in the Northeastern United States Hort.technology, 10:331-3

14- Peet,  M.  2004. Sweet corn. http://www.cals. ncsu. Cdu/ sustainable/peet/profiles/ cl7 sweet. html.441

15- Peneleit, C. G. and Egli, D. B.1998. Kernel growth rate and duration in maize as affected by planted density and genotype.crop sci. 19:385-386

16- Rangarajan, A., Ingall, B., orphanages, M. and wolfed, D. 2002. In –row spacing and cultivar affects ear yield and Quality of early-planted sweet corn Hort.Technology. 12(3):410-415

17- Reed, A. J., Sigletay, G. W., Schussler, J. R., Williamson, D. R. and, Christy, A.L. 1999. Shading effects on dry matter nitrogen partitioning Kernel number, and yield of maize crop sci -28:819-825

18- Smite, R., Aguria, J. and Caprile, J.1996. Sweet corn production California UC IPM world wide web site University of California cooperative Extension form Advisors

19- Stickler, F. C. and Loude, H. H. 1995. Effect of raw spacing and plant population on performance of corn grain sorghum and forage sorghum - Agron.J:275-277

20- Vanagessel, M. J. E., Schweitzer, E., Garrett, K. A. and Westra, P. 1995. Influence of weed density and distribution on corn (Zea mays) yield. Weed Sci. 43: 215-218.

21- Waligora, H. 1997. The influence of plant density on yielding of sweet corn varieties.

22- Williams, W. A., Loomis, R. S. and Lepley, C. R. 1985. Vegetative growth of.corn as affected by population density.crop.sci.211-215.