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Della Bruna E.,Epagri Estacao Experimental de Urussanga | Dalbo M.A.,Epagri Estacao Experimental de Videira
Revista Brasileira de Fruticultura | Year: 2013

Trends in climate series and agro-climatic indices were evaluated for growing vines in Vale do Rio do Peixe, in the state of Santa Catarina. Daily data of the Meteorological Station of Videira for the period from 1971 to 2010 were used. The trend in the series was analyzed with the Mann-Kendall test and to estimate the magnitude of the trend it was used the median slope determined by the Theil-Sen estimator. The results showed an increasing trend in series of minimum air temperature at the annual scale and also in the seasons of the year. The maximum air temperature presented a significant trend of increase in the series of annual maximum temperature and in the maximum temperature in summer and winter. It was also observed an increase in frequency of hot days and hot nights. In terms of agrometeorological indices it was observed a significant trend of decrease in the number of frost events, in the reduction of the time of sprouting, flowering and harvesting, and a significant increase in thermal summation, in the Huglin index, and in the cold index. In relation to precipitation there was a significant trend of increase in the annual total precipitation and in precipitation during the period of growth of the vines as well as the number of days with rainfall amounts equal or higher than 20mm. Source


De Medeiros A.M.,Autonomo | Peruch L.A.M.,Epagri Estacao Experimental de Urussanga
Semina:Ciencias Agrarias | Year: 2012

The anthracnose, caused by Glomerella cingulata (anamorf Colletotrichum gloeosporioides), is the most important fungal disease for aerial parts of yellow passionfruit. However, few studies about anthracnose control in field conditions have been published. The objective of this research was to evaluate silicate clay and fungicides for anthracnose control. Treatments evaluated were: tebuconazole (20g i.a./100L), copper oxychloride (180g i.a./100L), silicate clay (15g/L) and control (untreated plants). The sanity of the plants was evaluated through area under disease progress curve (AUCPD), final severity (SEVF) and disease progress curves. Experimental design was completely randomized with five repetitions. Tebuconazole and silicate clay proportioned significant reduction for AUCPD and SEVF compared to control. Copper oxychloride reduced only SEVF. Treatment with tebuconazole reduced AUCPD and SEVF in 75% and 71%, and silicate clay in 82%, respectively. Copper oxychloride reduced SEVF in 76%. The disease progress curves confirmed results and showed lower growth of anthracnose for tebuconazole and silicate clay. Silicate clay and tebuconazole are efficient to control anthracnose in passionfruit. Source


Bruna E.D.,Epagri Estacao Experimental de Urussanga | Moreto A.L.,Epagri Estacao Experimental de Urussanga | Dalbo M.A.,Epagri Estacao Experimental de Videira
Revista Brasileira de Fruticultura | Year: 2012

The aim of the present study was estimate the coefficients of repeatability for productive features in peach, in addition to identify and select promising clones for the south coastal region of the State of Santa Catarina, Brazil. Hybrid plants that showed good adaptation to the climate, production, size, flavor and firmness of fruit were selected. These selections were then grafted on Okinawa rootstock and planted in the year 2005 in three different locations: 1 - Experimental Station of Urussanga, at 40 meters of altitude; 2 - Grower's orchard, at 200 meters of altitude; 3 - Grower's orchard, at 350 meters of altitude. The seedling were planted in a spacing of 6 x 1 meters and conducted in V system. Evaluations were carried out during the years 2007 and 2008. Variance components were estimated by Restricted Maximum Likelihood (REML), and the prediction of phenotypic and genotypic values by Best Linear Unbiased Prediction (BLUP), using the software Selegen-REML/BLUP. All productive features showed considerable genetic variability, with the estimations of repeatability coefficient (r) ranging from medium to high magnitude (0.54 to 0.74) for mean fruit weight (MMF), and from low to medium magnitude (0.22 to 0.39) for the number of fruits per plant (PTF). Clones 1770 and 1443 showed a good performance on average across all sites, while clones 0470 and 1307 performed better in site 1, clone 1444 in site 2, clones 0740 and 0926 in site 3, clone 1770 in sites 1 and 2. Source

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