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Silva E.B.,Federal University of Vales do Jequitinhonha and Mucuri | de Souza B.P.,Federal University of Vales do Jequitinhonha and Mucuri | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Amorim E.P.,Embrapa Mandioca e Fruticultura Tropical | And 2 more authors.
Bioscience Journal | Year: 2014

This work objective to evaluate the effect of macronutrient deficiencies no growth and nutritional status of banana seedlings type Prata. The treatments were two genotypes Prata-Anã and its hybrid PA42-44 grown in nutrient solution in the presence and absence of macronutrients. Leaf area, dry matter of roots, rhizome and leaves, and the macronutrient dry mass of each plant were evaluated after 100 days. With these results was calculated the indices: absorption, transport and utilization efficiency of macronutrientes. The deficiencies of N for Prata-Anã and Mg for PA42-44 hybrid were most limited the growth of genotypes. The nutrient accumulation corresponded to the following order N > K > Ca > P > Mg > S for the Prata-Anã and N > K > Ca > P > S > Mg for the PA42-44 hybrid, which reflect the plant requirements. The PA 42-44 hybrid showed higher absorption efficiency of all macronutrients, in complete solution. The treatments no differ regarding to the macronutrients transport efficiency, except the omission of Mg, where higher efficiency occurred in hybrid PA 42-44. The P, K, Ca, Mg and S omission in the nutrition of two banana genotypes results in increased utilization efficiency, compared with plants growing adequately.


Santos M.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Martinez M.A.,Federal University of Viçosa | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano
Bioscience Journal | Year: 2013

Gas exchanges influence growth, development and production of crops and are associated with the plant water conditions, which can be dependent on the soil and climate conditions. The present study aimed at evaluating transpiration, photosynthesis, stomatal conductance, internal CO2 concentration and foliar temperature of 'Tommy Atkins'mango trees under different irrigation treatments in the semiarid region of Bahia (BA, Brazil). The experimental design was a randomized block with five treatments and six replicates: 1, irrigation providing 100 % of crop evapotranspiration (ETc) in phases: I (early blooming to early fruit expansion), II (early expansion to early physiologic ripening) and in phase III (physiologic ripening of fruits); 2, regulated deficit irrigation (RDI) with 50 % of ETc in phase I; 3, RDI with 50 % ETc in phase II; 4, RDI with 50 % ETc in phase III; 5, no irrigation. Total or partial soil water deficit caused reduction in photosynthetic rate, transpiration and stomatal conductance of 'Tommy Atkins' leaves. Partial soil water deficit does not cause significant alterations in internal CO2 concentration or in leaf temperature of 'Tommy Atkins' mango trees.


De Souza B.P.,Federal University of Viçosa | Silva E.B.,Federal University of Vales do Jequitinhonha and Mucuri | Da Cruz M.C.M.,Federal University of Vales do Jequitinhonha and Mucuri | Amorim E.P.,Embrapa Mandioca e Fruticultura Tropical | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano
Revista Brasileira de Fruticultura | Year: 2016

The knowledge of the requirements and micronutrients efficiency in banana is relevant to the development of fertilizer recommendations. This study aimed to evaluated requirements and nutritional efficiencies of banana seedlings submitted to omission of micronutrients in nutritive solution. Treatments were complete nutritive solution and solution with individual omission of B, Cu, Fe, Mn and Zn, and two Prata-Anã and BRS Platina hybrid genotypes. Leaf area, dry matter of leaves, rhizome, roots and total and micronutrient contents were determined. With results, the following indexes were calculated: uptake, transport and micronutrient utilization efficiency. B deficiency effected more intensely the growth of both banana genotypes. The nutrient uptake corresponded to the following sequence: Fe > Mn > Zn > B > Cu, which reflects the plant requirements. The BRS Platina hybrid showed higher B, Fe and Zn absorption efficiency in relation to Prata Anã cultivar, which had higher Cu absorption efficiency. BRS Platina hybrid showed higher efficiency in the transport of Fe and Mn, while Prata Anã only for Cu. Prata Anã cultivar showed higher micronutrient utilization efficiency in complete treatment and treatment with omission of micronutrients. © 2016, Sociedade Brasileira de Fruticultura. All rights reserved.


Marques P.R.R.,State University of Montes Claros | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Pereira M.C.T.,State University of Montes Claros | Coelho E.F.,Embrapa Mandioca e Fruticultura Tropical | Arantes A.M.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano
Pesquisa Agropecuaria Brasileira | Year: 2011

The objective of this work was to evaluate the agronomic characteristics of Prata banana plants during three production cycles, under different irrigation systems, in semi-arid conditions. A randomized block design was adopted with six treatments, in a 3×2 factorial arrangement: three irrigation systems - conventional sprinkler, microsprinkler and drip - and two genotypes - 'Prata-Anã' and its hybrid PA42-44. Four replicates in plots with six useful plants were used. Plant height, pseudostem perimeter, number of alive leaves, length and width of the third leaf, total leaf area, and leaf area index were evaluated at flowering. Weight of bunch and hands, mean weight of hands, weight of the three first hands, number of hands and fruits per bunches, and weight, length and diameter of fruits and number of alive leaves were evaluated during the harvest season. The drip irrigation system provides smaller vigor to banana Prata, in comparison to conventional and to micro sprinkler systems, as can be seen by the size and perimeter of the pseudostem. The cultivar Prata-Anã shows a larger number of fruit and hands per brunch, while its hybrid PA42-44 shows larger weight, length and fruit diameter.


Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Marques P.R.R.,State University of Montes Claros | Coelho E.F.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária
Acta Horticulturae | Year: 2013

Banana genotypes grown under different irrigation systems may express different vegetative traits and yields, even if all other crop conditions are similar. This study aimed to evaluate the vegetative traits of two banana genotypes of the Pome subgroup (AAB) under different irrigation systems in semiarid conditions during three production cycles. The experimental design was a randomized block design with six treatments in a 3×2 factorial scheme: three irrigation systems (sprinkler, micro-sprinkler and drip) and two genotypes ('Dwarf Pome' and 'BRS Platina', earlier reported as 'PA42-44'). Four replications were used, with six plants spaced at 3.0×2.5 m per net plot. Plant height, pseudostem girth, number of functional leaves, length and width of the third leaf, total leaf area and leaf area index were evaluated at flowering. In addition the number of functional leaves, weight of bunch and number of hands was also evaluated at harvest. Interactions between the treatments were not significant. Irrigation systems affected vegetative traits. The drip irrigation system reduced growth as measured by plant height and pseudostem girth, for both genotypes, compared with conventional sprinkler and micro-sprinkler irrigation systems. The weight of the bunch in the second cycle and the number of hands in the third cycle were higher for plants grown under conventional sprinkler and micro-sprinkler irrigation systems compared to drip irrigation. The 'Dwarf Pome' showed higher number of hands per bunch than 'BRS Platina'.


de Azevedo V.F.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | de Magalhaes Arantes A.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Maia V.M.,State University of Montes Claros | de Oliveira e Silva S.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária
Ciencia e Agrotecnologia | Year: 2010

This work aimed to evaluate, agronomically, in two production cycles, seven genotypes (treatments) of banana Prata, tall type, in the semi-arid. Pacovan (AAB) variety and hybrids 'Pacovan-Ken', PV42-53, 'Preciosa', 'Japira' and PV79-34 (AAAB) and the 'Garantida' (AAAB), from the 'Prata São Tomé' hybrid were evaluated. The experimental design was completely randomized with 10 replicates in the planting spacing 3.0 × 2.5 meters. At the time of flowering and harvesting, vegetative phenotypic descriptors, cycle, yield, and severity assessment of yellow Sigatoka were considered. The data were submitted to variance analysis and the average grouped by Scott-Knott criterion at 5% probability. Values increased between production cycles. There is variability in the characteristics between the genotypes belonging to the same genomic group and subgroup, including hybrids originated from the same genitor. The hybrids are more vigorous than the Pacovan variety. Garantida cultivar is the least productive. 'Pacovan' is the most susceptible (score six), the PV79-34 hybrid presents intermediate susceptibility (score three) and other hybrids are resistant to yellow Sigatoka (score one). The PV79-34 hybrid has characteristics favorable to its cultivation due the smallest height, greatest vigor, minor cycle and largest number of hands and fingers.


Ribeiro M.S.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Lima L.A.,Federal University of Lavras | Colombo A.,Enga Agronoma | Caldeira A.C.D.M.,Enga Agronoma | Faria F.H.S.,UNIMONTES CCET DCA
Engenharia Agricola | Year: 2013

The objective of this study was to characterize water application rate, water application pattern width, flow rate, water distribution uniformity and soil loss caused by nozzles of the Low Energy Precision Aplication (LEPA) type Quad-Spray emitter. The study was carried out at the Hydraulic and Irrigation Laboratory of the Department of Engineering at the Federal University of Lavras, in Lavras, state of Minas Gerais - MG, Brazil. Twenty-two (22) LEPA Quad-Spray emitter nozzles were evaluated, with nozzle diameter ranging from 1.59 to 9.92 mm. The experimental design used was entirely randomized, with three replications. Increasing values of nozzle flow rate ranging from 77.44 up to 3,044 L h-1, were obtained with increasing nozzle diameter sizes. Application pattern width ranged from 0.56 up to 3.24m, according to nozzles diameter size. Low values of CDU (maximum of 35.73%) were observed when using the Quad-Spray nozzles. Observed average water application rates covered the range between 68.05 mm h-1 (the lowest value that was obtained with the 2.38mm nozzle) and 258.15 mm h-1 (the highest value that was observed with the 9.92 mm). Average water application rates increased in a simple nonlinear function with the increase of nozzle size diameter. However, the weighted average increase in the amount of soil loss by erosion was not related to the increase of weighted average water application values.


Rodrigues Filho V.A.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Silva T.S.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Amorim E.P.,Embrapa Mandioca e Fruticultura
Revista Brasileira de Fruticultura | Year: 2014

This study aimed to evaluate vegetative traits, yield and the incidence of Panama disease in Pacovan and in the hybrids: ‘Japira’, ‘Pacovan-Ken’, ‘‘Preciosa and ‘Garantida’, recommended for producers, and ‘PV79-34’ in selection, in two production cycles. The experimental design was a completely randomized design with six treatments and five replications. Data were subjected to analysis of variance and means grouped by Scott-Knott test (P <0.05). There is genetic variability between cultivars. ‘Garantida’ has a lower yield expressed by the mass of hands and bunches and the number of fruits. ‘PV79-34’ has the greatest vigor, smallest height, and with higher yield, but is susceptible to the Panama disease. © 2014, Sociedade Brasileira de Fruticultura. All rights reserved.


Aguiar M.D.S.M.A.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Siva F.F.,University do Sudoeste da Bahi | Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Schio A.R.,University do Sudoeste da Bahi | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2015

The objective was to analyze the influence of increasing levels of forage cactus Opuntia in the diet on the nitrogen balance, the concentrations of urea in urine and plasma and microbial protein synthesis in dairy heifers 3/4 Holstein-zebu confined. twenty four heifers were used with initial body weight of 163.00 ± 18 kg, with 8 months old and distributed in a completely randomized design with four treatments and six replications. It was used sorghum silage, concentrate and increasing levels of forage cactus Opuntia in the diet (0, 200, 400 and 600 g kg-1). The nitrogen intake, feces and urine, digested and retained with the addition of forage cactus in the diet showed decreasing linear effect. Nitrogen balance was influenced by the inclusion of forage cactus in the diet of dairy heifers through the values observed for the digested and retained nitrogen, which can be related to similar effects found for the consumption of nitrogen and the nitrogen excretion in feces and urine. Nitrogen digested percentage of intake and nitrogen retention as a percentage of ingested and digested showed no difference with the inclusion of forage cactus in the diet. The concentration of urea nitrogen in the urine of heifers had a quadratic effect point of maximum excretion level of 275.80 g kg-1 of forage cactus in the diet. Consequently, the excretion of urea nitrogen and urea excretion showed similar effect with maximum points excretion levels of 293.75 and 319.00 g kg-1 of forage in the diet. The concentration of ureic nitrogen in plasma showed no difference, with an average value of 13.19 mg dL-1. Synthesis of nitrogen and microbial crude protein adjusted to the quadratic model. The microbial efficiency was not influenced by the inclusion of forage cactus in replacement of sorghum silage and concentrate. The urine volume similar to the treatments, with an average of 5.90 liters of urine per day, proving that the creatinine excretion in urine was not influenced by the levels of forage cactus in the diet.


Donato S.L.R.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Ledo A.A.,Instituto Federal Of Educacao Ciencia E Tecnologia Baiano | Pereira M.C.T.,State University of Montes Claros | Coelho E.F.,Embrapa Mandioca e Fruticultura Tropical | And 2 more authors.
Pesquisa Agropecuaria Brasileira | Year: 2010

The objective of this work was to evaluate nutrient leaf contents and the productivity of 'Prata-Anã' banana submitted to different irrigation systems, during the first production cycle. The experimental design was in randomized blocks, with six treatments in 3×2 factorial arrangement: three irrigation systems (conventional sprinkler, microsprinkler and drip); and two genotypes (Prata-Anã and its hybrid PA42-44). Four replicates were used in a 3.0×2.5-m spacing. The evaluations were done at 90, 180 and 360 days after planting. The genotypes and the irrigation systems showed significant interaction for leaf contents of B and Cu, at 180 days after planting; and the genotypes differed from each other for leaf contents of N, P, K, Ca, Mg, Cu and Mn, independently of the irrigation system used. Nutrient leaf contents occurred in sufficient levels or above them. The lowest micronutrient leaf contents occur under drip irrigation. The genotypes have similar yield under the different irrigation systems.

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