Moreira G.M.,Federal University of Viçosa |
Barrella T.P.,Federal University of Viçosa |
Neto F.L.M.,Empresa Baiana de Desenvolvimento Agricola |
Martinez H.E.P.,Federal University of Viçosa |
Santos R.H.S.,Federal University of Viçosa
Coffee Science | Year: 2014
This paper evaluates the effects of the period of intercropping of hyacinth beans (Dolichos lab-lab) and jack beans (Canavalia ensiformis) on coffee (Coffea arabica) growth and productivity. The treatments were the two legume species combined in a factorial design with four intercropping periods (30, 60, 90 e 120 days after planting). The control treatment consisted of plots with coffee sole crop. The experiment was carried out for two years at Rio Pomba, Minas Gerais state, Brazil. The biomass of legumes and the growth and yield of coffee shrubs was quantified in each year. There was a positive linear accumulation of the legume dry matter as intercropping period increased. On the first year, jack beans (2.65 t ha−1) accumulated more biomass than hyacinth beans (1.89 t ha−1). On the second year, hyacinth beans accumulated 5.74 t ha−1 of dry biomass and jack beans 2.89 t ha−1 at 120 days. On the first year, the increasing of intercropping period with hyacinth beans resulted in a decrease of the coffee shrub canopy diameter and number of leaves. On the second year, the coffee shrubs intercropped with hyacinth beans grew more than the ones intercropped with jack beans. Compared to the control treatment, the intercropping reduced coffee yield, presenting different effects on them. © Spandidos Publications 2014. All rights reserved.
Borges-Dos-Santos R.R.,Federal University of Bahia |
Lpez J.A.,Tiradentes University |
Zacharias F.,Empresa Baiana de Desenvolvimento Agricola |
David J.M.,Federal University of Bahia |
And 2 more authors.
Evidence-based Complementary and Alternative Medicine | Year: 2012
Forty-eight goats naturally infected with gastrointestinal nematodes were randomly divided into four groups (n = 12): negative control (G1) (untreated), positive control (G2) (treated with doramectin, 1mL/50Kg b.w.), and G3 and G4 treated with 2.5 and 5mg/Kg b.w. of a leaf aqueous extract of Caesalpinia pyramidalis (CP). Fecal and blood samples were regularly collected for the evaluation of fecal egg count (FEC), hematological and immunological parameters to assess the anthelmintic activity. In treated animals with CP, there was noted a significant reduction of 54.6 and 71.2 in the mean FEC (P < 0.05). An increase in IgA levels was observed in G3 and G4 (P < 0.05), during the experimental period, suggesting that it was stimulated by the extract administration. In conclusion, the results showed that CP provoked a protective response in infected animals treated with them. This response could be partly explained by the CP chemical composition. © 2012 Roberto Robson Borges-dos-Santos et al.
Physical properties and organic carbon of a savannah redyellow latossol under different plant covers [Propriedades físicas e teor de carbono orgânico de um latossolo vermelho-amarelo do cerrado, sob diferentes coberturas vegetais]
Kato E.,University of Brasilia |
Ramos M.L.G.,University of Brasilia |
de Vieira D.F.A.,Ministerio do Desenvolvimento Agrario |
Meira A.D.,Empresa Baiana de Desenvolvimento Agricola |
Mourao V.C.,Banco Cooperativo do Brazil
Bioscience Journal | Year: 2010
The oxisol has been widely used for agricultural productivity in Brazil. On these soils, native vegetation has been substituted for crops, grasses and in the last years a huge area has been planted with forest plants. The aim of this paper was to evaluate the effect of different uses: savannah, grasses, pinus and eucalyptus, in different depth on soil properties of a red-yellow Latossol. The soil properties evaluated were: aggregate stability, soil organic carbon, bulk and particle density and porosity. The results showed that there was effect of the different plant covers in the depth on all soil properties studied. The mean weight diameter (DMP), in general, was lower at layer of 20-30 cm, with exception of pinus area which showed similar results in all layers. The DMP at savannah area showed lower values from layer of 10-20 cm. Soil organic carbon was higher at layer 0-5 cm and similar in the other soil layers for all plant covers. The bulk density (Ds) was higher and the particle density (Dp) was lower on soil under grasses. In layer of 0-5 cm the Dp was lower in the all plant covers. Soil porosity decreased from layer of 10-20 cm for all plant covers, with exception of grasses which had similar soil porosity at all studied soil layers.
Filho J.B.L.,Laboratorio Of Fisiologia E Biotecnologia Of Reproducao Animal |
Do Monte A.P.O.,Laboratorio Of Fisiologia E Biotecnologia Of Reproducao Animal |
Souza T.T.D.S.,Laboratorio Of Fisiologia E Biotecnologia Of Reproducao Animal |
Miranda M.D.S.,Laboratorio Of Fisiologia E Biotecnologia Of Reproducao Animal |
And 9 more authors.
Semina:Ciencias Agrarias | Year: 2015
To evaluate the effect of pFSH dose on the in vivo embryo production of Dorper ewes in the semi-arid northeast of Brazil, 40 sheep females were distributed into two groups of 20 animals that received intravaginal CIDR for 14 days, and two days before device removal, they received one of the following treatments: in the FSH200 group, the ewes received 200 mg of pFSH; and in the FSH128 group, the ewes received a total of 128 mg in decreasing doses every 12 h. Beginning 12 h after the conclusion of the treatments, estrus detection was performed every four hours using two Dorper rams of proven fertility. The ewes were mated at estrus onset and 24 hours later. Seven days after intravaginal device removal, the superovulatory response was evaluated, and embryo collection was performed using the laparotomy method. The recovered flushings were subjected to embryo searches under a stereomicroscope and classified according to their qualities. Analyses of variance (ANOVAs) and LSD tests were used to compare the different parameters. The data expressed as percentages were analysed by chi-square test. The ovulation rate was higher in the FSH200 group, which had 16.3 ± 0.3 corpora lutea (CL), than in the FSH128 group, which had 11.3 ± 0.3 CL (P<0.05). However, higher fertilization rate (83.6% vs. 62.4%) and higher transferable (86.0% vs. 71.6%) and freezable (67.9% vs. 40.8%) embryo rates were observed in the FSH 128 group compared with the group that received 200 mg. Furthermore, no significant differences in the remaining parameters were observed between the experimental groups (P>0.05), demonstrating that pFSH dose reduction promoted a greater production of freezable and transferable embryos in Dorper ewes subjected to MOET.
Crop performance of onion cultivars under different irrigation managements in the lower São Francisco basin [Desempenho agronômico de cultivares de cebola sob diferentes manejos de irrigação no submédio São Francisco]
Bandeira G.R.L.,Empresa Baiana de Desenvolvimento Agricola |
de Queiroz S.O.P.,UNEB |
Aragao C.A.,UNEB |
Costa N.D.,Embrapa Semiarido |
Santos C.A.F.,Embrapa Semiarido
IRRIGA | Year: 2013
This work aimed to study the development of five onion cultivars (IPA 10, IPA 11, Alfa São Francisco, Serena and Antares), in Juazeiro, State of Bahia, Brazil, drip irrigated, under four methods of irrigation management: Penman - Monteith FAO, tensiometry, 100% and 70% of class A pan evaporation. The experimental design was completely randomized, in a split-plot design, consisting of four irrigation management methods in the plots and five onion cultivars in the subplots. The variables evaluated were: total yield, marketable yield, yield of type 1, 2, 3 and 4 bulbs, pyruvic acid content and soluble solids content. There was no interaction effect between irrigation management methods and the onion cultivars. The yield and quality of Serena and Antares cultivars were significantly higher than the ones of the other cultivars. The irrigation management based on class A pan at 70% resulted in a lower performance for the variable marketable yield.