A aplicação de fungicidas diminuiu a severidade da doença na época seca, entretanto, a produtividade dos tratamentos sem aplicação não foi comprometida, devido ao aparecimento tardio da doença,variando de 19,2 t/ha para a Eldorado 300 até 41,9 t/ha para a Canarian. Todas as cultivares foram suscetíveis à doença, sendo a Gaúcho Redondo a menos suscetível apenas na estação seca do ano. Os tratamentos consistiram de cada cultivar e a parcela subdividida em com (WA) e sem a aplicação de fungicidas (NA). No período de seca as cultivares utilizadas foram: Eldorado 300, Hibrix, Dourado Amarelo, Louro, Gaúcho Redondo e Canarian época das chuvas: Eldorado 300, Hibrix, HF-4439, Louro, Gaúcho Redondo e Canarian. Foram utilizadas seis cultivares de melão em cada época. Foram conduzidos dois experimentos: Estação seca (Experimento I) e Estação chuvosa (Experimento II), compreendendo os períodos de julho a outubro de 2013 e março a maio de 2014, respectivamente.
No presente trabalho teve-se por objetivo avaliar a resistência ao crestamento gomoso do caule e as características agronômicas de cultivares de melão na região sul do estado do Tocantins, cultivados em duas estações climáticas e submetidas ou não à aplicação de fungicidas. Thus, in Tocantins, the dry season is characterized as the best time of year for cultivation, between April and September.Ĭucumis melo Stagonosporopsis cucurbitacearum chemical control The climatic characteristics observed in the rainy season, with high humidity, leaf wetness and high temperatures are favorable for the development of gummy stem blight in melon plants. During the rainy season, fungicide application did not protect the plants, which did not complete the cycle, resulting in the absence of marketable fruit production. The total soluble solids showed average values of 12☋rix, except for cultivar Gaúcho Redondo, which showed brix value lower than commercial standards. The fungicide application decreased disease severity in the dry season, however the productivity of the crop in treatments without fungicide application were not compromised, due to the late onset of the disease, and ranged from 19.2 t/ha for Eldorado 300 up to 41.9 t/ha for Canarian. All cultivars were susceptible to disease, considering that Gaúcho Redondo was the least susceptible in the dry season. Treatments consisted of each cultivar and split plot with (WA) or without fungicides application (NA). In the dry season: Eldorado 300, Hibrix, Dourado Amarelo, Louro, Gaúcho Redondo and Canarian and in the rainy season: Eldorado 300, Hibrix, HF-4439, Louro, Gaúcho Redondo and Canarian. Six melon cultivars were used in each season. Two experiments were carried out: dry season (experiment I), and rainy season (experiment II), respectively, comprising the periods from July to October 2013 and from March to May 2014. The authors aimed to evaluate the resistance to gummy stem blight and the agronomic traits of the melon crop in the Southern Region of the State of Tocantins, Brazil, in two growing seasons, submitted or not to treatment with fungicides.
0 kommentar(er)
