Indian Journal of Agricultural Research

  • Chief EditorT. Mohapatra

  • Print ISSN 0367-8245

  • Online ISSN 0976-058X

  • NAAS Rating 5.60

  • SJR 0.293

Frequency :
Bi-monthly (February, April, June, August, October and December)
Indexing Services :
BIOSIS Preview, ISI Citation Index, Biological Abstracts, Elsevier (Scopus and Embase), AGRICOLA, Google Scholar, CrossRef, CAB Abstracting Journals, Chemical Abstracts, Indian Science Abstracts, EBSCO Indexing Services, Index Copernicus
Indian Journal of Agricultural Research, volume 52 issue 1 (february 2018) : 61-65

Investigation of competitive reactions of red root pigweed (Amaranthus retroflexus L.) and corn (Zea mays L.)
 

Mehdi Madandoust, Reza Taherdoust
1Islamic Azad University, Fasa Branch, Fasa, Iran.
Cite article:- Madandoust Mehdi, Taherdoust Reza (2018). Investigation of competitive reactions of red root pigweed (Amaranthus retroflexus L.) and corn (Zea mays L.). Indian Journal of Agricultural Research. 52(1): 61-65. doi: 10.18805/IJARe.A-295.
In order to determine the effects of density of red root pigweed on growth and physiological parameters of corn, an experiment was conducted  in Faculty of Agriculture, Islamic Azad University of Fasa, located in southeastern region of Fars Province in Iran. The experiment involved the effects of various densities of red root pigweed at five levels including zero, 1, 2, 4, and 8 plants in each meter of plant row on the yield and yield components of single cross 500 corn variety, carried out in the form of complete randomized blocks design in three replications under farm conditions. The results showed that the highest yield of corn was obtained under no pigweed treatment, which had no significant difference with the treatment involving the density of one pigweed plant in each meter of planting row. The lowest yield for corn was obtained when the density of pigweed was 8 plants, which had no significant statistical difference with the treatment involving 4 plants of pigweed in each meter of planting row. Among the yield components, the highest weight of 1000 grains, the number of grains in each cob, and the number of grains in each row of corn cob were obtained under the treatment involving no pigweed and the lowest values for these components were obtained under the treatment involving eight plants of pigweed in each meter of planting row, with no significant difference with the 4 plant treatment. 
  1. Ballare, C.L., Casal, J.J. (2000). Light signals perceived by crop and weed plants. Field Crops Research. 67 (2) : 149- 160.
  2. Bastian, L. (2000). Ecology and management of weeds. Wageningen Agricultural University, The Netherlands press.354p. 7-Beckett.
  3. Feizabadi, A., Mazaheri, D., Zand, E. (2010). Influence of density and planting pattern on com yield in competition with redroot pigweed (Amaranthus retrojlexus L.). Proceedings of 3rd Iranian weed science congress, Volume 1: Weed Biology and Ecophysiology. Babolsar, Iran. 17- 18 Fabruary. pp 262- 265.
  4. Joanna, P., Agnieszka, S. (2013). Analysis of the aboveground and roots biomass of redroot pigweed (Amaranthus retroflexus L.) depending on plant density. Modern Phytomorphol. 3: 51–56.
  5. Kropff, M.J., Lotz, L.A.P. (1992). Systems approaches quantify crop- weed interactions and their application in weed management. Agricultural Systems. 40: 265- 282.
  6. Lindquist, J.L., Mortensen, D.A. (1998). Tolerance and velvetleaf (Abutilon theophrasti) suppressive ability of two old and two modern corn (Zea mays) hybrids. Weed Science. 46 (5): 569- 574.
  7. Park, S.E., Benjamin, L.R., Watkinson, A.R. (2003). The theory and application of plant competition models: an agronomic perspective. Ann. Bot. 92(6):741-8
  8. Rajcan, I., Swanton, C.J. (2001). Understanding maize- weed competition: resource competition, light quality and the whole plant. Field Crops Research. 71 (2) : 139- 150.
  9. Strahan, R.E., Griffin, J.L., Reynolds, D.B., Miller, D.K. (2000). Interference between Rottboellia cochinchinensis and Zea mays. Weed Science. 48 (2) : 205- 211.
  10. Saayman, A.E.J., Van de Venter, H.A. (1996). Influence of weed competition on subsequent germination and- seed vigour of Zea mays. Seed Science and Technology. 25: 59- 65.
  11. Vahedi, A. (2015). Effects of redroot pigweed (Amaranthus retroflexus L.) competitionon the yield and yield components of corn under different levels of nitrogen application. J. Agroeco. 5 (2): 14- 25.
  12. Vazin, F. (2012). The effect of redroot pigweed (Amaranthus retroflexus) competition and it’s economic thresholds in corn (Zea mays). Planta Daninha. 30 (3) : 477- 485.
  13. Xiaoyan, M., Hanwen, W., Weili, J. Yajie, M., Yan, M. (2015). Interference between Redroot Pigweed (Amaranthus retroflexus L.) and Cotton (Gossypium hirsutum L.) growth analysis. J. Plos one. 10: 1- 18.

Editorial Board

View all (0)