New Method of Controlling Sugarcane Smut using Flutriafol Fungicide

Abstract

Sugarcane smut, caused by Sporisorium scitamineum, is one of the most devastating diseases of sugarcane worldwide. Triazole fungicides such as propiconazole and triadimefon have been routinely used as dip treatments to protect seed-cane (stalk cuttings) from infection by sugarcane smut fungus. However, dip treatments can be applied only to mother stock (nursery) planting materials because of the logistics of dipping large quantities of seed-cane and it is difficult to dispose of the large volumes of waste fungicide solution in an environmentally safe manner. There was a need for a new fungicide that can be applied using more practical methods. The efficacy of flutriafol fungicide to control smut was evaluated in inoculated and infected stalks of a highly susceptible cultivar using various application methods. In a 2007 experiment, flutriafol fungicide was equally effective or better in controlling sugarcane smut as a dip than were two fungicides, propiconazole and triadimefon, registered in Australia. In 2009, two experiments determined the effectiveness of flutriafol when applied by mixing with fertilizer or spraying on the seed-cane at planting. All fungicide treatments significantly suppressed smut in one experiment but, in the second experiment, flutriafol-fertilizer mix treatments were ineffective. In 2010, two experiments verified the efficacy and effective rates of flutriafol against sugarcane smut when applied through existing spray equipment designed to spray fungicide on cuttings as they drop into the planting furrow on a commercial planter. Area under the disease progress curve values of smut incidence were reduced significantly to 47 and 56% with low (125 g a.i. ha−1) and high (375 g a.i. ha−1) application rates, respectively, in both experimental sites compared with the inoculated control plots. Sugar yield increased by 46 to 65% in one experiment and 157 to 203% in the second experiment compared with the inoculated control. This research formulated a more practical method of application of flutriafol and suggests greater applications of this fungicide for the management of sugarcane smut.

Control of Sugarcane Smut Disease: Evaluation of the In vitro Fungitoxicity of Three Essential Oils

“…This demonstrates that chemicals can be substituted by essential oils for the control of this pathogen. Indeed, chemicals are widely used for the control of smut disease [23]. Yet these products are expensive and contribute to an increase in the cost of sugarcane production.…”

Pengendalian Penyakit Luka Api pada Tanaman Tebu dengan Fungisida Flutriafol

“…Pada tahun 2010, dua percobaan telah dilakukan untuk verifikasi keefektifan dan tingkat efektivitas Flutriafol terhadap jamur luka api pada tebu, ketika diaplikasikan menggunakan alat semprot yang dirancang khusus untuk menyemprotkan fungisida pada bagal saat ditanam dalam juringan di areal perkebunan. Hasil percobaan menunjukkan kejadian penyakit luka api berkurang secara signifikan yaitu sebesar 47% dan 56% dengan tingkat aplikasi pada dosis rendah (125 g ai ha -1 ) dan dosis tinggi (375 g ai ha -1 ) (Bhuiyan, et al, 2015).…”

“…Setelah inokulasi, benih bagal ditanam di lahan percobaan. Perlakuan fungisida disesuaikan dengan konsentrasi percobaan fungisida Flutriafol sebagaimana yang dilakukan oleh Bhuiyan, et al, (2015) yaitu 2,6 ml/L dan 5,2 ml/L. Perlakuan percobaan ada 6 yaitu T0 (kontrol, tanaman sakit), T1 (Flutriafol konsentrasi 2,6 ml/L yang diaplikasikan 1x saat tanam), T2 (Flutriafol konsentrasi 2,6 ml/L yang diaplikasikan 2x saat tanam dan umur 1,5 bulan), T3 (Flutriafol konsentrasi 5,2 ml/L yang diaplikasikan 1x saat tanam), T4 (Flutriafol konsentrasi 5,2 ml/L yang diaplikasikan 2x saat tanam dan umur 1,5 bulan) dan H (tanaman sehat).…”

New 24-Membered Macrolactins Isolated from Marine Bacteria Bacillus siamensis as Potent Fungal Inhibitors against Sugarcane Smut

“…To date, many studies have been performed on sugarcane resistance to smut disease including its morphology, physiological biochemistry, , cytology, and genetics. , Over the past several decades, triazole fungicides such as propiconazole and triadimefon have been routinely used as dip treatments and to protect seed cane from infection by S. scitamineum . These treatments have been successful, but no major class of new fungicide has been introduced for a period of time except mycophenolic acid, which can inhibit the dimorphic switch of S.…”