000			02709nam a22002537a 4500
003			UPMIN
005			20221213110907.0
008			221115b |||||||| |||| 00| 0 eng d
040			_cUPMin
100			_9184 _aDionio, Belly T.
245			_aFusarium heart rot: _bfirst report on pineapple in South Cotabato and Davao City, Philippines /
260			_aIñigo Street, Davao City, Philippines 8000 _bUniversity of Southeastern Philippines _cMarch 2020
300			_aillustrations
520	3		_aPineapple is among the major export commodities in the Philippines. A species of Fusarium was found for the first time to be consistently associated with diseased leaves collected from MD2 'Super Sweet' pineapple plantations in South Cotabato and Davao City. Test of proof of pathogenicity of the fungus following Koch's postulates and bioassay test of FosetylA1 products against the fungus were conducted. For the bioassay, the treatments used were the following: 1) untreated; 2) Fosetyl-A1, Brand X at 2.25 and 5g/L water; and 4) Fosetyl-A1, Brand Z at 2.25 and 5g/L water. The experiment was laid out in Completely Randomized Design with three replications at three plates per replicate. The data was analyzed using Analysis of Variance and treatment means were compared using Tukey's Honest Significant Difference. Symptoms of the disease included lesions, which later turned into brown, necrotic tissues at the base of infected pineapple leaves, while advanced symptoms showed infected tissues with dark brown to black margins, later dried up and became soft-rotted. The fungus produced cottony white aerial mycelia on the cut surface of the tissues planted on Potato Sugar Agar (PSA) medium. Mycelia were hyaline and septated. Macro-conidia were single-celled, slightly curved, and sickle-shaped with three or more septates. Pure cultures turned light purple after eight days of incubation in full strength PSA. Chlamydospores formed after two months of incubation. Based on cultural and morphological characteristics, the fungus was identified as Fusarium sp. Bioassay results showed that Fosetyl-A1 Barnd X and Z at 5.0 g/L water significantly inhibited the growth of Fusarium sp. infecting pineapple leaves from 97.9 to 100%, respectivel, after 9 days of incubation.
650		0	_aPineapple _9188
650		0	_aPineapple _9188 _xdiseases
650		0	_aMindanao studies _9120
650		0	_aPineapple _9188 _xplantations _zSouth Cotabato
700			_9185 _aBacoba, Carlo Jun M.
700			_9186 _aPuig, Cecirly G.
700			_9187 _aRamos, Fernan Rhean A.
773			_tThe Southeastern Philippines Journal of Research and Development _013212 _gVo. 25, No.1 (March 2020), 183-196 p.
942			_2lcc _cAT _n0
999			_c13249 _d13249