Paper Details

Evaluation of bio-fertilizer effect on selective corn herbicides efficiency to control of Chenopodium album and Amaranthus retroflexus

Yavar Vaziritabar, Yazdan Vaziritabar, Farzad Paknejad, Farid Golzardi, Sina Falah Tafty

DOI: https://dx.doi.org/10.12692/ijb/4.12.44-53

Int. J. Biosci. 4(12), 44-53. June, 2014. (PDF)

Abstract:

This experiment was conducted during 2009 growing season as split plot with randomized complete block design arrangement in a field of Faculty of Agriculture, Islamic Azad University, Karaj branch, Iran. Application and non-application of bio-feltilizer (a strain of Seudomonas spp.) was the main treatments. The sub-treatments were application of herbicides consisted of EPTC, atrazin, nicosulfuron, foramsulfuron, rimsulfuron and 2,4-D plus MCPA respectively at 4100, 800, 80, 450, 12.5, 108 g ha-1 and weedy check. In this research, application of bio-fertilizer on efficiency of some herbicides was effective in decreasing weeds dry weight. Total evaluation indicated that all herbicides in both situation application and non-application of bio-fertilizer, significantly reduced weeds dry weight compare to weedy check. Atrazin and nicosulfuron, compared with weedy check, significantly reduced the number of lamb’s quarters (Chenopodium album) plants. However, all herbicides significantly reduced the dry weight of this weed. EPTC, atrazin, rimsulfuron and nicosulfuron, compared with weedy check reduced the number of plants and dry weight of redroot pigweed (Amaranthus retroflexus). 2,4-D plus MCPA had no significant effect on this weed. Application of atrazin and EPTC resulted in significant increase of maize grain yield and the number of ear. Application of atrazin caused the highest 1000-grain weight of maize, but was not significantly different from nicosulfuron and foramsulfuron.