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Made available in DSpace on 2019-10-04T12:37:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-05-20 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) United States Institute of Peace Studies regarding the residual effects of sewage sludge in soil several years after the first and only application are still scarce, especially for tropical areas under forestry management. In these soils, the residual effects can represent a neglected phenomenon, since silvicultural management experiences a longer crop rotation cycle compared to most common agricultural cycles. Consequently, under forestry management, sewage sludge applications can represent an event occurring just once over cycles of several years. This study aimed to evaluate the long-term effects of residual sewage sludge application in infertile tropical soils under Eucalyptus plantations in terms of both the main chemical features (pH, soil organic matter, N, P, S, K, Ca, Mg, and cation-exchange capacity) and the potentially toxic elements (As, Ba, Cd, Co, Cr, Cu, Mo, Ni, Pb, Se, and Zn) concentrations/behaviors of soil. Residual effects were evaluated in four areas (Sao Paulo State, Brazil) after 10.0, 12.2, 12.4, and 17.2 years from the first and only application, respectively. Differences in terms of treatments were evaluated by analysis of variance: correlations and similarity analyzed by principal component and cluster analysis, respectively. The results showed that soil organic matter, main macronutrients (N and P), and cation-exchange capacity contents were generally higher in sewage sludge-treated soils while potentially toxic element contents tended to increase at increasing sewage sludge doses. In most of the investigated treatments, the potentially toxic element concentrations were usually below both the soil natural background concentrations and quality reference values. Principal component and cluster analysis revealed that differences among areas were primary due to differences in applied sewage sludge type and amount. The effects of residual sewage sludge application on soil, in terms of both the pros and cons, can be detected even many years after the first and only application. Studies on the long-term effects of sewage sludge should be mandatory for both monitoring the pedoenvironment and for guiding policymakers and producers on the best practices for their reuse and management. (C) 2019 Elsevier Ltd. All rights reserved. Univ Sao Paulo, Dept Forest Sci, Coll Agr Luiz de Queiroz, Av Padua Dias 11, BR-13418900 Piracicaba, SP, Brazil Univ Sao Paulo, Ctr Nucl Energy Agr, Av Centenario 303, BR-73416000 Piracicaba, SP, Brazil Inst Forest Sci & Res IPEF, Private Bag 530, BR-13400970 Piracicaba, SP, Brazil Univ Sao Paulo, Dept Soil Sci, Coll Agr Luiz de Queiroz, Av Padua Dias 11, BR-13418900 Piracicaba, SP, Brazil Univ Sao Paulo, Dept Exact Sci, Coll Agr Luiz de Queiroz, Av Padua Dias 11, BR-13418900 Piracicaba, SP, Brazil Sao Paulo State Univ, Dept Plant Protect, Rural Engn & Soils, Sch Engn, BR-15385000 Ilha Solteira, SP, Brazil Univ Sassari, Dipartimento Architettura Design & Urbanist, Via Colombo 1, I-08100 Nuoro, Italy Univ Sassari, Desertificat Res Ctr, Viale Italia 39, I-07100 Sassari, Italy Sao Paulo State Univ, Dept Plant Protect, Rural Engn & Soils, Sch Engn, BR-15385000 Ilha Solteira, SP, Brazil FAPESP: 2004/15097-0 FAPESP: 2018//13152-7 CNPq: 485205/2012-2 CNPq: 312728/2017-4 CAPES: 001

Made available in DSpace on 2018-11-26T17:41:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-12-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Suzano Pulp and Paper Company S.A. Fertilization of Eucalyptus plantations using sewage sludge on unfertile tropical soils represents an alternative to using mineral N and P fertilizers. A 44-month field experiment was conducted to study the effects of increasing application of sludge, and its interactions with mineral N and P fertilizers, on wood volume. Four rates of sludge (0, 8,15 and 23 Mg ha(-1), dry base), N (0, 47, 95 and 142 kg ha(-1)) and P (0, 28, 56 and 84 kg ha(-1) of P2O5) were combined in a 4 x 4 x 4 factorial scheme in a totally randomized block design. Response surface and age-shift modeling was used to establish an initial recommendation for mineral fertilization of the Eucalyptus plantations treated with sludge and to analyze the implications of increased growth on the duration of the forest cycle in a tropical climate. The results showed that from 8 to 44 months after planting, the sludge application (with or without N and P) yielded a statistically larger wood volume (P < 0.05), compared to application of N and P fertilizers only. The response surface modeling showed the following outcomes: i) application of sludge based on N criterion reduced the need for N and P fertilizers by 100%; and ii) an increase in wood volume by 7% could be achieved, compared to NPK fertilizers only, if 2/3 of the recommended P was applied. The cultivation time to produce 150 m(3) ha(-1) of wood volume was 45 months for the control and was reduced by two, three, four, or five months, respectively, through application of recommended P, sludge dose, sludge plus one third of P, and sludge plus two thirds of P. On the whole, sewage sludge could represent an excellent unconventional N and P fertilizer source for wood production on unfertile tropical soils. (C) 2017 Elsevier Ltd. All rights reserved. Univ Sao Paulo, Dept Plant Nutr, Ctr Nucl Energy Agr, BR-13400970 Piracicaba, SP, Brazil Fed Univ Grande Dourados, Sch Engn, BR-79804070 Dourados, MS, Brazil EMBRAPA Cerrado, BR-73310970 Planaltina, DF, Brazil Univ Sao Paulo, Luiz de Queiroz Coll Agr, BR-13418900 Piracicaba, SP, Brazil Suzano Papel & Celulose SA, BR-18200000 Itapetininga, SP, Brazil Univ Florida, Inst Food & Agr Sci, Indian River Res & Educ Ctr, Ft Pierce, FL 34945 USA Sao Paulo State Univ, Sch Engn, Dept Plant Protect Rural Engn & Soils, BR-15385000 Ilha Solteira, SP, Brazil Univ Sassari, Dipartimento Architettura Design & Urbanist, Via Colombo 1, I-08100 Nuoro, Italy Univ Sassari, Desertificat Res Ctr, Viale Italia 39, I-07100 Sassari, Italy Sao Paulo State Univ, Sch Engn, Dept Plant Protect Rural Engn & Soils, BR-15385000 Ilha Solteira, SP, Brazil FAPESP: 2004/15097-0 FAPESP: 2015/09690-5 CNPq: 313374/2014-7

Made available in DSpace on 2013-09-27T14:53:35Z (GMT). No. of bitstreams: 1 WOS000292445000018.pdf: 159060 bytes, checksum: ba52293118f64e763ee5cca8e34ada05 (MD5) Previous issue date: 2011-06-01 Made available in DSpace on 2013-09-30T18:03:34Z (GMT). No. of bitstreams: 1 WOS000292445000018.pdf: 159060 bytes, checksum: ba52293118f64e763ee5cca8e34ada05 (MD5) Previous issue date: 2011-06-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:19:11Z No. of bitstreams: 1 WOS000292445000018.pdf: 159060 bytes, checksum: ba52293118f64e763ee5cca8e34ada05 (MD5) Made available in DSpace on 2014-05-20T13:19:11Z (GMT). No. of bitstreams: 1 WOS000292445000018.pdf: 159060 bytes, checksum: ba52293118f64e763ee5cca8e34ada05 (MD5) Previous issue date: 2011-06-01 A main purpose of a mathematical nutrition model (a.k.a., feeding systems) is to provide a mathematical approach for determining the amount and composition of the diet necessary for a certain level of animal productive performance. Therefore, feeding systems should be able to predict voluntary feed intake and to partition nutrients into different productive functions and performances. In the last decades, several feeding systems for goats have been developed. The objective of this paper is to compare and evaluate the main goat feeding systems (AFRC, CSIRO, NRC, and SRNS), using data of individual growing goat kids from seven studies conducted in Brazil. The feeding systems were evaluated by regressing the residuals (observed minus predicted) on the predicted values centered on their means. The comparisons showed that these systems differ in their approach for estimating dry matter intake (DMI) and energy requirements for growing goats. The AFRC system was the most accurate for predicting DMI (mean bias = 91 g/d, P < 0.001; linear bias 0.874). The average ADG accounted for a large part of the bias in the prediction of DMI by CSIRO, NRC, and, mainly, AFRC systems. The CSIRO model gave the most accurate predictions of ADG when observed DMI was used as input in the models (mean bias 12 g/d, P < 0.001; linear bias -0.229). while the AFRC was the most accurate when predicted DMI was used (mean bias 8g/d. P > 0.1; linear bias -0.347). (C) 2011 Elsevier B.V. All rights reserved. Univ Estadual Paulista, UNESP, Dept Zootecnia, BR-14884900 São Paulo, Brazil Ohio State Univ, Dept Anim Sci, Columbus, OH 43210 USA Univ Sassari, Dipartimento Sci Zootecn, I-07100 Sassari, Italy Univ Estadual Paulista, UNESP, Dept Zootecnia, BR-14884900 São Paulo, Brazil