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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.


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 Agropecuaria
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'.


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

The objective of this work was to evaluate the influence of increasing levels of forage in the diet on performance of crossbred heifers 3/4 Holstein-Zebu and economic viability. Twenty four heifers with initial body weight of 163.00 ± 18 kg, distributed in a completely randomized design with four diets and six replications, were used. We used sorghum silage, concentrate and increasing levels of forage in the diet (0, 200, 400 and 600 g kg-1). Regarding the performance of heifers, there was no difference in height at withers, thoracic perimeter and feed conversion among diets. The average daily weight gain decreased with the concentration from 0.00 to 600.00 g kg-1 dietary palm. The final body weights ranged from a quadratic function of palm levels. Dry matter (%BW), neutral detergent fiber corrected for ash and protein (%BW) and crude protein intake decreased with the palm levels. Neutral detergent fiber corrected for ash and protein, non-fiber carbohydrates and total digestible nutrients intakes were quadratically influenced by forage palm levels. Dry matter and crude protein did not differ among diets. Total digestible nutrients decreased with the inclusion of forage palm. The inclusion forage palm up to 400 g kg-1 provided better performance. For economic viability, the internal rate of return shows that diet with 400 g kg-1 forage palm resulted most satisfactory and its was more viable for a producer and investor, with return rate of 3 15% per month.


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 Agropecuaria
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.


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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