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Response of Sunflower to the Residual Toxicity of Herbicides Used in Wheat Under Strip Tillage System

M. A. Baki
Department of Agronomy and Agricultural Extension, University of Rajshahi, 6205, Rajshahi, Bangladesh.

M. A. K. Azad
Department of Crop Science and Technology, University of Rajshahi, 6205, Rajshahi, Bangladesh.

M. S. Shamim
Department of Agronomy, Bangladesh Agricultural University, 2202, Mymensingh, Bangladesh.

M. N. Hossain
Faculty of Agriculture, First Capital University of Bangladesh, 7200, Chuadanga, Bangladesh.

S. Paran
Department of Agronomy and Agricultural Extension, University of Rajshahi, 6205, Rajshahi, Bangladesh.

M. K. Haque
Department of Crop Science and Technology, University of Rajshahi, 6205, Rajshahi, Bangladesh.

Abstract/ Executive Summary:

The residual effect of eight herbicides (Pendimethalin, Pretilachlor, TriasulfuronEthoxysulfuron, Pyrazosulfuron Ethyl, Carfentrazone – ethyl, Carfentrazone – ethyl+ Isoproteuron, 2, 4 –D) used in wheat of Agronomy Field Laboratory during March to June 2014 was evaluated for the sunflower. The eighteen herbicide treatment combinations of the eight herbicides used in wheat. The experiment was conducted in Random Complete Block Design (RCBD) with three replications. The effect of herbicide residues on the sunflower was evaluated in terms of germination, the seedling root and shoot length, leaf chlorophyll content, and seeding dry matter. The result showed that the seedling establishment of sunflower was not adversely affected by the herbicides applied to the previous wheat crop.

Keywords: Sunflower; Residual effect; Herbicide residue; RCBD.

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-03-2014

End Date: 00-06-2014

Program Area: Pest Management

Commodity: Herbicide

Objectives:

To evaluation of the residual effect of different herbicides on the establishment and growth of the succeeding crops.

Methodology:

The experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from March to June 2014. The field was a medium-high land with a well-drained clay loam soil texture having a pH value of 6.8. The climate of the experimental area was under the subtropical region and characterized by high temperature, high relative humidity, and heavy rainfall with occasional gusty winds during the Kharif season and scanty rainfall associated with moderately low temperature during rabi season. Jute was used as test crops. Each of these crops was grown after wheat. Each experimental plot used in herbicide experiments for wheat was used to grow the test crops in 1 m x 1 m micro plots. Eighteen treatments consist of No weeding(T₁), Weed-free (4 hands weeding, T₂), Pendimethalin fb Pendimethalin (T₃), Pretilachlor fb Pretilachlor (T₄), Pendimethalin Ethoxysulfuron (T₅), pretilachlorfbEthoxysulfuran (T₆), Pendimethalin fb Ethoxysulfuran fb Carfentrazone-ethyl (T₇), Pretilachlor fb Ethoxysulfuran fb Carfentrazone-ethyl (T₈), Pendimethalin fb Carfentrazone-ethyl (T₉), Pretilachlor fb Carfentrazone-ethyl (T₁₀), Pendimethalin fb Pyrazosulfuran Ethyl fb 2,4-D (T₁₁), Pretilachlor fb Pyrazosulfuran Ethyl fb 2,4- D (T₁₂), Pendimethalin fb 2,4-D (T₁₃), Pretilachlor fb 2,4-D (T₁₄), Pendimethalin fb (Carfentrazone- ethyl+Isoproteuron) (T₁₅), Pretilachlor fb (Carfentrazone-ethyl+Isoproteuron) (T₁₆), Triasulfuron fb (Carfentrazone-ethyl+ Isoproteuron) (T₁₇), and Triasulfuron fb 2, 4-D (T₁₈). In wheat cultivation, the experiment was established in a Randomized Complete Design with three replications. The size of each unit plot was 3 m × 4 m. Three micro plots of 1 m x 1 m were prepared in each unit plot to jute to test the response to the treatment used in the wheat plot. The jute was placed in the micro plots.500 Jute seed was shown in the broadcasting method. During the cultivation of BARI Gom-26 white variety in November 2013, experimental land was infested by weeds that were killed by applying Glyphosate @ 100 mL ha-1. Pre-emergence herbicides (Pendimethalin, Pretilachlor, and Thiasulfuron) was applied at 03 DAS, early post-emergence (Ethoxysulfuran and Pyrazosulfuran ethyl) at 15 days after sowing, and post-emergence herbicides (Carfentrazone- ethyl, 2, 4-D and Carfentrazone- ethyl + Isoproteuron) was applied at 25 DAS in the wheat field. Weed-free plots were kept weed-free by four hand weeding. Data was recorded on Germination percentage (25 DAS), Shoot length cm 15 & 30 DAS (cm), Root length 15 & 30 DAS (cm), Leaf chlorophyll content at 25 & 30 DAS (ppm), Dry weight at 30 DAS (gm). Germination counting three days after sowing and continues up to 25 days. Leaf chlorophyll content was taken from each micro plot from the five plants which was before selected and the average value was taken. Analysis of variance was done with the help of a computer package MSTAT -C program. The mean differences among the treatments were adjudged by Duncan's Multiple Range Test (DMRT).

Source of Information: Asian Journal of Advances in Agricultural Research- 12(3): 14-21, 2020

Article Link (Online Journal): DOI: 10.9734/AJAAR/2020/v12i330083

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The result shows that herbicide did not significantly affect the plant population, root length, and dry weight of jute but was significant for the shoot length and SPAD value. So, the herbicides used in wheat had no adverse effect on germination and the establishment of sunflower.

Knowledge Management: Journal