Celant V.M.,West Parana State University |
Pio R.,Federal University of Paraná |
Chagas E.A.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária |
Alvarenga A.A.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM |
And 2 more authors.
Ciencia Rural | Year: 2010
In order to increase the use of propagation material, enlarge the offer period of the quince seedlings production and dynamic use of the labor in the nursery, it becomes necessary to store the of budsticks. Thus, the present research aimed to study the feasibility of the maintaining budstick of different quince cultivars, through cold storage and to verify the grafting method to promote better development of the graft. Branches of the 'Japonês' (Chaenomeles sinensis), 'Smyrna', 'Portugal', 'Mendoza Inta-37' and 'Provence' (Cydonia oblonga) quince cultivars were collected in July, 2008. One of the branches was used for grafting (methods budding and cleft grafting methods) in 'Japonês' rootstock seedlings of six months of age and other part was stored at e low temperature (wrapped up cutting in humidified paper and wrapped up in polyethylene sacks, placed in cold chamber for 4°C) for 30 and 60 days. After 60 days, the percentage of sprouting was measured and 120 days after grafting, the length, diameter and mass dries average of the grafts were measured. It was concluded that, despite the cultivars presented anydifference, it is recommended that the branches need to be stored for up to 30 days, if the cleft grafting is used.
Spatial patterns of preconsolidation pressure and soil moisture along transects in two directions under coffee [Padrões espaciais da pressão de preconsolidação e da umidade do solo ao longo de transecções em duas direções em uma lavoura cafeeira]
Gontijo I.,Federal University of Espirito Santo |
Dias Junior M.S.,Federal University of Lavras |
Guimaraes P.T.G.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM |
de Oliveira M.S.,Federal University of Lavras |
Ajayi A.E.,Federal University of Technology Akurre
Revista Brasileira de Ciencia do Solo | Year: 2011
Information on the spatial structure of soil physical and structural properties is needed to evaluate the soil quality. The purpose of this study was to investigate the spatial behavior of preconsolidation pressure and soil moisture in six transects, three selected along and three across coffee rows, at three different sites under different tillage management systems. The study was carried out on a farm, in Patrocinio, state of Minas Gerais, in the Southeast of Brazil (18 ° 59 ′ 15 ″ S; 46 ° 56 ′ 47 ″ W; 934 m asl). The soil type is a typic dystrophic Red Latosol (Acrustox) and consists of 780 g kg -1 clay; 110 g kg -1 silt and 110 g kg -1 sand, with an average slope of 3 %. Undisturbed soil cores were sampled at a depth of 0.10-0.13 m, at three different points within the coffee plantation: (a) from under the wheel track, where equipment used in farm operations passes; (b) in - between tracks and (c) under the coffee canopy. Six linear transects were established in the experimental area: three transects along and three across the coffee rows. This way, 161 samples were collected in the transect across the coffee rows, from the three locations, while 117 samples were collected in the direction along the row. The shortest sampling distance in the transect across the row was 4 m, and 0.5 m for the transect along the row. No clear patterns of the preconsolidation pressure values were observed in the 200 m transect. The results of the semivariograms for both variables indicated a high nugget value and short range for the studied parameters of all transects. A cyclic pattern of the parameters was observed for the across-rows transect. An inverse relationship between preconsolidation pressure and soil moisture was clearly observed in the samples from under the track, in both directions.
Silva L.F.O.,Federal University of Lavras |
Oliveira A.F.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM |
Pio R.,Federal University of Lavras |
Zambon C.R.,Federal University of Lavras |
Oliveira D.L.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM
Bragantia | Year: 2012
The aim of this study was to evaluate the semi-woody rooting of cuttings from 35 olive cultivars collected at two different times (April and August). The experimental design was the completely randomized in factorial 35x2, with 4 replicates and 25 cuttings per plot. The cuttings were standardized to 12 cm long and 4-6 internodes, with four entire leaves in the apical region. The treatment with hydroalcoholic solution of indolebutyric acid (IBA) at concentration of 3 g L-1 was performed by immersion of 3 cm from the base of the cuttings in the solution, for five seconds. The cutting was planted in sand and placed in greenhouse with intermittent mist. After 70 days, there was a significant variation in rooting among the olive cultivars. The cultivars MGS MANZ215 and MGS TAF390 showed higher rooting capacity. The cuttings collected in April presented higher rooting as compared to those ones collected in August for some of the cultivars evaluated.
da Silva L.F.O.,Federal University of Lavras |
de Oliveira A.F.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM |
Pio R.,Federal University of Lavras |
Alves T.C.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM |
Zambon C.R.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG CTSM
Bragantia | Year: 2012
Olive tree (Olea europaea L.) grown in south Minas Gerais State has shown promising results for fruit yield. However, little is still known about the fruit nutritional value and oil quality for those potentially productive cultivars. The objective of this work was to determine fruit centesimal composition, chemical characteristics, and the fatty acids profile of oils extracted from different olive tree cultivars to select the ones with improved agro-industrial potential. We assessed 32 six-year-old olive cultivars for the centesimal composition (moisture, lipids, proteins, and ash content, both in flesh and stone fruits), chemical composition, and fatty acid profiles. The cultivars MGS ACS315, Cerignola, MGS GRAP561, and MGS GRAP575 showed higher lipid content. Besides, these results indicated that the fruit core showed significant lipid amounts, although lower than those present in the pulp. The index results of oleic acid, peroxides, and absolute refraction are in agreement with ANVISA resolution and initially may be classified as virgin or extra virgin oil. In general, all fatty acids present in the olive oil tested had satisfactory values and the MGS GRAP084 cultivar had the highest content of oleic acid, the main fatty acid responsible for health benefits.