The Evaluation of Application Time of Prosulfocarb (80% EC) Herbicide on Weed Control especially Annual Ryegrass (Lolium rigidum) in Wheat

Subject Areas : Weed Research Journal

Ebrahim Mamnoie ¹ , Mohamad Reza karaminejad ² , Mehdi Minbash Moeini ³ , Hassan Zali ⁴

1 - Assistant Professor of Plant Protection Research Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO, Darab, Iran
2 - Research Associate, Iranian Research Institute of Plant Protection, Agricultural Research, AREEO, Tehran, Iran
3 - Associate Professor, Iranian Research Institute of Plant Protection, Agricultural Research, AREEO, Tehran, Iran
4 - Assistant Professor of Fars Agricultural and Natural Resources Research and Education Center, AREEO, Darab, Iran

Received: 2023-12-09 Accepted : 2024-02-10 Published : 2024-05-04

Keywords: Boxer, Chemical control, Control percentage, Dry weight, ,

Abstract :

To study the effect of Prosulfocarb (Boxer, 80% EC) herbicides to control weeds of wheat fields in Fars (Dara). This experiment was carried out in a randomized complete block design with 14 treatments and 4 replications during 2021-2022. The treatments include (Treat. 1 to 9) the application of Boxer herbicide at a dose rate of 3, 3.5 and 4 L ha- 1, before the first irrigation, after the first irrigation, and early post-emergence in 1 to 3 leaves of wheat. (Treat. 10) Pinoxaden (Axial, 5% EC) + Bromoxynil+ MCPA (Bromicide MA, 40% EC) at dose rate 1.2 l + 1.5 L ha-1, respectively. (Treat. 11) Mesosulfuron+Iodosulfuron+ Diflufenican (Othello, 6% OD) at a dose rate of 1.6 L ha-1, (Treat. 12) Diclofop-Methyl (Iloxan, 36% EC) + Tribenuron methyl (Geranestar, 75% DF) at dose rates of 2.5 L ha-1+ 20 g ha-1, (Treat. 13) Metribuzin (Sencor, 70% WP) at the rate of 800 g ha-1 (400 g ha-1 in, early post-emergence in 1 to 3 leaves of wheat + 400 g ha-1 in the tillering stage of wheat), and (Treat. 14) weeding control. The highest relative density was Lolium rigidum L. (39%) in the experiment. The results showed that herbicides that were applied significantly decreased the weed density and biomass of Lolium rigidum L., Convolvulus arvensis L., and Melilotus officinalis (L.) Lam., Carthamus oxyacanthus M.B. significantly increased the number of spikes per m2, grains per spike, 1000 grains weight, grain yield and biological yield. Pre-emergence application of Boxer was better than its application early after its emergence. The herbicide application of Boxer (4 L ha-1) before the first water decreased weed biomass of, L. rigidum, M. officinalis, and C. oxyacanthus by 72, 67 and 85%, respectively. Sencor herbicide had the best control on L. rigidum by 82%, and increased grain yield (6.5-ton ha-1) by 35 compared to weed control. Herbicide was introduced as the best treatment. The efficiency of Sencor herbicide and Boxer (4 L ha-1 before the first) was higher than other herbicides in L. rigidum control.