Reduced herbicide doses in combination with boiled sorghum and mustard crop residues suppress weeds and increase yield in transplanted aus rice | ||
| Egyptian Journal of Agronomy | ||
| Volume 47, Issue 4, December 2025, Pages 895-913 PDF (1.13 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/agro.2025.391870.1716 | ||
| Authors | ||
| Md. Romij Uddin* 1; Md. Towkir Ahmed2; Mansura Khatun3; Md. Shafiqul Islam4; Uttam Kumer Sarker3; Md. Abdus Salam4 | ||
| 1Department of Agronomy, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh | ||
| 2a) Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh b) Sustainable Agrifood Systems (SAS) Program, International Maize and Wheat Improvement Center (CIMMYT), P.O. Box 6057, Gulshan-1, Dhaka 1212, Bangladesh | ||
| 3Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh | ||
| 4Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh | ||
| Abstract | ||
| The agriculture sector is constantly adopting environmentally friendly and sustainable methods to reduce the harmful effects of herbicides on crop production. In this phenomenon, two experiments were conducted at the Agronomy Field Laboratory (AFL) of Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh during aus rice growing season (May to September) of 2022 and 2023 to evaluate the effect of allelopathic boiled extract of sorghum and mustard crop residues combined with reduced doses of herbicide (Granite 240 SC, a.i. Penoxsulam) in transplanted aus rice (T. aus rice). In the first-year experiment, treatments comprised two factors viz. variety (3)- (BRRI dhan48, BRRI dhan98, and Binadhan-21) and five different levels of sorghum crop residue extract with recommended doses of herbicide and in second year experiment the varieties and treatments were the same except mustard crop residues. Principal component analysis of weed dry matter revealed that several treatment combinations were effective against Panicum repens, Cyperus rotundus, Echinochloa crus-galli, and Ludwigia octovalvis. The radar graph revealed that the highest percentage of weed inhibition was 80.96% against Cyperus difformis using a treatment of 80% RDH with boiled sorghum residue extract compare than mustard residue extract at post-emergence. The maximum number of grain panicles-1(105.59), grain yield (5.36 t ha-1) and biological yield (11.63 t ha-1) was overserved by combining BRRI dhan98 and the 80% RDH with boiled sorghum residue extract. The study concluded that reduced herbicide doses integrated with boiled sorghum and mustard crop residue extract effectively suppressed weeds and increased the yield of transplanted aus rice. | ||
| Keywords | ||
| Weed inhibition; percent inhibition; principal component analysis; grain; integrated weed management | ||
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