Weed control methods and coffee shrub residue effects on carbon stocks in a Latosol under conservation management practices
Abstract
Weed control methods in coffee crops can significantly influence carbon (C) stocks of soil humic substances. The aim of this study was to evaluate C stocks in an experimental coffee crop submitted to conservation agriculture for weed control between coffee rows. The study was carried out in a very clayey Dystroferric Red Latosol, Londrina, Paraná state (23°21�??30�?� S; 51°10�??17�?� W), cultivated with cultivar Mundo Novo IAC 379-19. In 2008, the experiment was established as randomized block design with four replicates within split-split plot scheme. Seven weed control methods between coffee rows were considered (hand weeding; portable mechanical mower; herbicides application; two cover crops; weed check and spontaneous). In September 2013, coffee shrub pruning was conducted and residues were distributed along inter rows. The weed control methods were considered as the main-plot factor and sampling period (March 2014 and February 2015) as the split-plot. Soil samples were collected at the center of the inter rows at four depth increments. C stocks evaluation included total organic carbon determination by chromic acid wet oxidation. Humic substances were characterized by UV-Vis spectroscopy. Most of the considered weed control methods did not affect organic carbon storage in 0 �?? 40 cm layer, nevertheless led to increase at topsoil. In 2015, the humin fraction C stock was 54 % higher at superficial layer than subsequent depth, presenting 39 % average increase at the 2014/2015 interval. Although C stocks from humic and fulvic acids did not vary, more conjugated/condensed characteristic for the fulvic fraction was observed.Downloads
References
Albretch R, Le Petit J, Terrom G and Périssol, C (2011) Comparison between UV spectroscopy and Nirs to assess humi_ cation process during sewage sludges and green wastes co-composting. Bioresource Technology 102:4495-4500.
Araujo-Junior CF, Rodrigues BN, Chaves JCD and Yada Junior GM (2013) Soil physical quality and carbon stocks related to weed control and cover crops in a Brazilian Oxisol. In: Soloneski S and Larramendy M (Eds.) Weed and pest control: conventional and new challenges. Intech, Rijeka, p. 181-205.
Benites VM, Schaefer CGER, Mendonça, ES and Martin-Neto, L (2001) Caracterização da matéria orgânica e micromorfologia de solos sob Campos de Altitude no Parque Estadual da Serra do Brigadeiro. Revista Brasileira de Ciência do Solo 25:661�??674.
Blake GR and Hartge KH (1986) Bulk density. In: Klute A (Ed.) Methods of soil analysis �?? physical and mineralogical methods. ASA-SSSA, Madison, p. 363-375.
Calvo P, Nelson L and Kloepper JW (2014) Agricultural use of plant biostimulants. Plant and Soil 383:3-41.
Chen Y, Senesi N and Schnitzer M (1977) Information provided on humic substances by E4/E6 ratios. Soil Science Society of America Journal 41:352-358.
Coelho MS, Mendonça ES, Lima PC, Guimarães GP and Cardoso IM (2013) Qualidade da matéria orgânica de solos sob cultivo de café consorciado com adubos verdes. Revista Brasileira de Ciência do Solo 37:1576-1586.
Cogo FG, Araujo-Junior CF, Zinn YL, Dias Junior MS, Alcântara EN and Guimarães PTG (2013) Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras. Semina: Ciências Agrárias 34:1089-1098.
Ebeling AG, Anjos LHC, Pereira MG, Pinheiro EFM and Valladares GS (2011) Substâncias húmicas e relação com atributos edá_ cos. Bragantia 70:157-165.
Ellert, BH and Bettany JR (1995) Calculation of organic matter and nutrients stored in soils under contrasting management regimes. Canadian Journal of Soil Science 75:529-538.
Flaig W (1988) Generation of model chemical precursors. In: Frimmel, FH and Christman, F (eds.), Humic substances and their role in the environment. John Wiley, New York, p. 75-82.
Fontana A, Pereira MG, Loss A, Cunha TJF and Salton JC (2006) Atributos de fertilidade e frações húmicas de um Latossolo Vermelho no Cerrado. Pesquisa Agropecuária Brasileira 41:847-853.
Fuentes M, González-Gaitano G and García-Mina JM (2006) The usefulness of UV-visible and fluorescence spectroscopies to study the chemical nature of humic substances from soils and composts. Organic Geochemistry 37:1949-1959.
Jastrow JD, Amonette JE and Bailey VL (2007) Mechanisms controlling soil carbon turnover and their potential application for enhancing carbon sequestration. Climate Change 80:5-13.
Lange M, Eisenhauer N, Sierra CA, Bessler H, Engels C, Grifths RI, Mellado-Vazquez PG, Malik AA, Roy J,
Scheu S, Steinbeiss S, _ omson BC, Trumbore SE and Gleixner G (2015) Plant diversity increases soil microbial activity and soil carbon storage. Nature Communications 6: 6707-6715.
Lopes ELN, Fernandes AR, Teixeira RA, Sousa ES and Ruivo MLP (2015) Soil attributes under di_ erent crop management systems in an Amazonian Oxisols. Bragantia 74:428-435.
Luo Z, Wang E and Sun OJ (2010) Soil carbon change and its responses to agricultural practices in Australian agroecosystems: a review and synthesis. Geoderma 155:211-223.
Martins BH, Araujo-Junior CF, Miyazawa M, Vieira KM and Milori DMBP (2015) Soil organic matter quality and weed diversity in co_ ee plantation area submitted to weed control and cover crops management. Soil and Tillage Research 153:169-174.
Matos ES, Mendonça ES, Lima PC, Coelho MS, Mateus RF and Cardoso IM (2008) Green manure in co_ ee systems on the region of Zona da Mata, Minas Gerais: characteristics and kinetics of carbon and nitrogen mineralization. Revista Brasileira de Ciência do Solo 32:2027-2035.
Melloni R, Belleze G, Pinto AMS, Dias LBP, Silve EM, Melloni EGP, Alvarenga MIN and Alcântara EN (2013) Métodos de controle de plantas daninhas e seus impactos na qualidade microbiana de solo sob cafeeiro. Revista Brasileira de Ciência do Solo 37:66-75.
Motta ACV, Nick JA, Yorinori GT and Serrat BM (2006) Distribuição horizontal e vertical da fertilidade do solo e das raízes de cafeeiro (Coffea arabica L.) cultivar Catuaí. Acta Scientiarum Agronomy 28:455-463.
Pavan MA, Chaves JCD, Siqueira R, Androcioli Filho A, Colozzi Filho A and Balota EL (1999) High co_ ee population density to improve soil fertility of an Oxisol. Pesquisa Agropecuária Brasileira 34:459-465.
Rangel OJP, Silva CA, Guimarães PTG, Melo LCA and Oliveira Junior AC (2008) Carbono orgânico e nitrogênio total do solo e suas relações com os espaçamentos de plantio de cafeeiro. Revista Brasileira de Ciência do Solo 32:2051-2059.
Serramia N, Sanchez-Monedero MA, Roig A, Contin M and De Nobili M (2013) Changes in soil humic pools after soil application of two-phase olive mill waste compost. Geoderma 192:21-30.
Siqueira RHS, Ferreira MM, Alcântara EN and Carvalho RCS (2015) Chemical attributes of an oxisol submitted to weed control in coffee. Coffee Science 10:138-148.
Stevenson FJ (1994) Humus chemistry: genesis, composition, reactions. John Wiley, New York, 496p.
Walkley A and Black I (1934) An examination of the Degtjare_ method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Science, 37:29-38.
West T and Six J (2007) Considering the in_ uence of sequestration duration and carbon saturation on estimates of soil carbon capacity. Climate Change 80:25-41.
Zech W, Senesi N, Guggenberger G, Kaiser K, Lehmann J, Miano TM, Miltner A and Schroth G (1997) Factors controlling humification and mineralization of soil organic matter in the tropics. Geoderma 79:117-161.
Zhang M, He Z, Zhao A, Zhang H, Endale DM and Schomberg HH (2011) Water-extractable soil organic carbono and nitrogen affected by tillage and manure application. Soil Science 176:307-312.
doi.org/10.33158/ASB