Comparative Efficiency of Different Post-Emergence Herbicides for Controlling Broadleaved Weeds in Rain-fed Wheat
Comparative Efficiency of Different Post-Emergence Herbicides for Controlling Broadleaved Weeds in Rain-fed Wheat
Zubina Hameed1, Muhammad Azim Malik1, Safdar Ali1*, Muhammad Ansar1, Farina Shaheen1, Ijaz Ahmad2 and Khisrao Kalim3
ABSTRACT
Weeds are the major problem of rainfed wheat of Pothwar Region of Pakistan. Due to subsistence kind of farming and dependence on rainfall, people are reluctant to do expenses on chemical control of weeds in wheat. Similarly, due to lack of awareness, they use wheat weeds as animal fodder and the hand weeding affects crop stand and its tillering which ultimately reduces the wheat yield of the pothwar region. So, chemical control of weeds was hypothesized to be the best solution for winter weeds of rainfed wheat’s weeds and for this purpose, a field study was carried out from October, 2010 to April, 2011 at University Research Farm Pir Mehr Ali Shah-Arid Agriculture University, Rawalpindi, Pakistan to evaluate the relative efficacy of different post-emergence herbicides viz. Clean wave 15 EO (Aminopyralid + fluroxypyre) @ 0.8 L ha-1, Aim 40 DF (Carfentrazone ethyl) @ 0.05 Kg ha-1, Buctril-super 60 EC (Bromoxynil + MCPA) @ 0.750 L ha-1, Atlantis 3.6 WG (Mesosulfuron + iodosulfuron) @ 0.7 Kg ha-1, Sectril-M 40 EC (Bromoxynil + MCPA) @ 1.2 L ha-1, Brominal-M 40 EC (Bromoxynil + MCPA) @ 2.0 Kg ha-1 for controlling weeds in rainfed wheat. The experiment was laid out in Randomized Complete Block Design (RCBD) under split plot arrangement with three replications of each treatment. The wheat variety “Chakwal-50” was sown with a tractor-drawn rabi drill in the last week of October 2010 with a seeding rate of 125 kg ha-1. The most dominant weeds found in the wheat crop were Fumaria indica, Convolvulus arvensis, Chenopodium album, and Asphodelus tenuifolius. The results of field experiment clearly showed that weed control efficiency was highest (98.18 %) in Buctril-super followed by Brominal-M (98.11%) and hand weeded weed-free plots (100%) as compared with other herbicides. Similarly Brominal-M and Buctril-super showed higher mortality percentage of weeds after weeds free (hand weeded) plots having (63.61 %), (62.64 %) and (100%) mortality percentages respectively. The plots treated with Buctril-super, Clean wave, Brominal-M, Sectril-M and hand weeding produced a higher number of tillers, plant height, spike length, and biological yield when compared with other treatments. The highest biological yield (10.55 t. ha-1) and grain yield (3.57 t. ha-1) were recorded in plots treated with Buctril-super along with highest benefit-cost ratio (2.52). Therefore, Buctril-super is recommended for best control of broad-leaved weeds and taking an economical yield of wheat.
To share on other social networks, click on any share button. What are these?
