Lettuce ( Lactuca sativa L.) is one of the leading vegetables produced by farmers in the Itabaiana region, and thus it is important to study means of sustainable management for the crop. The objective of this work was to evaluate the behavior of lettuce with different sources of organic matter and soil cover. Therefore, it was chosen to cultivate Veronica. The experiment was carried out in the experimental field plot of Project Small Farmer—Great Entrepreneur in the municipality of Itabaiana-SE, in 2010. The design was a randomized block design with four replications, with treatments consisting of five sources of organic matter (organic compost, chicken manure, cattle manure, sheep manure, and castor bean) and a control (no fertilizer), all with and without mulch, totaling 12 treatments. We evaluated the characteristics of plant diameter, plant height, fresh and dry root and shoot matter. We also evaluated the influence on the temperature and soil water tension. All productivity characteristics valuated showed the significant interaction between the type of fertilizer and the mulch, except for root dry weight, where only organic manure was a significant factor. When soil mulch was used, the best source of organic matter for growing lettuce was chicken manure, and in the impossibility of using this cover, we recommend the use of organic compost as a source of organic matter, as it showed the best result in the absence of coverage. The cover age also showed good results in relation to a temperature that promoted lower soil water tensions.
Keywords<i>Lactuca sativa</i>L.Organic FertilizerSoil Water Tension
Vidigal, S.M., Sediyama, M.A.N., Garcia, N.C.P. and Matos, A.T. (1997) Lettuce yield growth with different organic compounds and swine effluent. Horticultura Brasileira, 15, 35-39.
Rodrigues, E.T. and Casali, V.W.D. (1999) Yield and nutrient concentration in lettuce as a function of organic and mineral manuring. Horticultura Brasileira, 17, 125-128. http://dx.doi.org/10.1590/S0102-05361999000200010
Santos, R.H.S., Casali, V.W.D., Conde, A.R. and Miranda, L.C.G. (1994) Let tuce quality growth with organic compound. Horticultura Brasileira, 12, 29-32.
Oliveira, E.Q., Souza, R.J., Cruz, M.C.M., Marques, V.B. and França, A.C. (2010) Lettuce and arugula yield in consorted systems under organic and mineral fertilization. HorticulturaBrasileira, 28, 36-40. http://dx.doi.org/10.1590/S0102-05362010000100007
Nakagawa, J., Büll, L.T., Prochnow, L.I. and Villas Bôas, R.L. (1992) Organic compounds effects in lettuce (Lactuca sativa L.) crop: Series I. Científica, 20, 173-180.
Villas Bôas, R.L., Passos, J.C., Fernandes, D.M., Büll, L.T., Cezar, V.R.S. and Goto, R. (2004) Doses effects and organic compounds types in lettuce crop in two soils under protect environment. Horticultura Brasileira, 22, 28-34. http://dx.doi.org/10.1590/S0102-05362004000100006
Bizari, D.R., Matsura, E.E., Roque, M.W. and de Souza, A.L. (2009) Water consumption and yield of irrigated common bean in tillage and conventional tillage systems. Ciência Rural, 39, 2073-2079. http://dx.doi.org/10.1590/S0103-84782009000700018
Da Araújo, R.C., de Souza, R.J., da Silva, A.M. and Alvarenga, M.A.R. (1993) Effects of soil mulch on garlic crop (Allium sativum L) crop. Ciência e Prática, 17, 228-233.
Andrade Jr., V.C., Yuri, J.E., Nunes, U.R., Pimenta, F.L., Matos, C.S.M., Florio, F.C.A. and Madeira, D.M. (2005) Use of cover types for lettuce crop. Horticultura Brasileira, 23, 899-903.
Rodrigues, D.S., Nomura, E.S. and Garcia, V.A. (2009) Yield and nutrient concentration in lettuce, depending on the organic and mineral fertilizers. Revista Ceres, 56, 332-335.
Rosolem, C.A., Calonego, J.C. and Foloni, J.S.S. (2003) Potassium leaching of straw cover crops depending on the amount of rain. Revista Brasileira de Ciência do Solo, 27, 355-362. http://dx.doi.org/10.1590/S0100-06832003000200015
Andreani Jr., R. and Galbiati Neto, P. (2003) Evaluation influence of death cover under lettuce crop development at Fernandópolis-SP region. Horticultura Brasileira, 21, 2.
Carvalho, J.E., Zanella, F., Mota, J.H. and Lima, A.L.S. (2005) Soil mulching cover in lettuce crop in Ji Paraná-RO. Ciência e Agrotecnologia, 29, 935-939. http://dx.doi.org/10.1590/S1413-70542005000500003
Batista, M.A.V., Vieira, L.A., de Souza, J.P., de Freitas, J.D.B. and Bezerra Neto, F. (2012) Effect of different sources of fertlization on lettuce crop in Igaratu-CE municipality. Revista Caatinga, Mossoró, 25, 8-11.
de Almeida Neto, J.X., Carneiro, I.F. and Pereira, A.V. (1990) Effect of different organic wastes in the development and productivity of lettuce (Lactuca sativa L.). Anais Escola Agronomia e Veterinária, 20, 1, 45-51.
Pimentel, M.S., Lana, A.M.Q. and De-Polli, H. (2008) Commercial quality of lettuce and carrot consortium and fertilized with organic compound. Embrapa Agrobiologia, Boletim de Pesquisa de Desenvolvimento, Seropédica.
de Freitas, M.E., Bono, J.A.M., Pedrinho, D.R., Chermouth, K.S., Yamomoto, C.R. and de Vidis, R.Y. (2009) Use of organics compounds as fertilization for the culture of lettuce. Agrarian, 2, 41-52.
de Oliveira, C.A.P. and de Souza, C.M. (2003) Influence of mulch on moisture, weed pressure and berry borer rhizome (Cosmopolites sordidus) in an orchard of banana (Musa spp.). Revista Brasileira de Fruticultura, Jaboticabal, 25, 345-347.
Porto, V.C., de Negreiros, M.Z., Neto, F.B. and Nogueira, I.C.C. (1999) Sources and rates of organic matter on lettuce production. Revista Caatinga, Mossoró-RN, 12, 7-11.
Vidigal, S.M., Ribeiro, A.C., Casali, V.W.D. and Fontes, L.E.F. (1995) Response of lettuce (Lactuca sativa L.) to the residual effect of organic fertilization II—Test greenhouse. Revista Ceres, Viçosa, 42, 89-97.
Zizas, G.B., Seno, S., Faria Jr., M.J.A. and Seleguini, A. (2002) Effect of mulching on yield and quality of six lettuce cultivars and soil-cultivar interactions in the period May-June 2001. XLII Brazilian Congress of Vegetables Crops, Brasília, 28 July 2002-2 August 2002, pp. 270-273.
Chaves, S.W.P., Medeiros, J.F., Negreiros, M.Z. and Nagão, E.O. (2003) Yield of lettuce as a function of land cover and irrigation frequency. XLIII Brazilian Congress of Vegetables Crops, Brasília, 27 July 2003-1 August 2003.
Moura Filho, E.R., Rodrigues, A.P.M.S., Freire, J.O., Dantas, M.M., Bergamo, G.C. and Freitas, F.C.L. (2010) Ground cover in weed management in lettuce. XXVII Brazilian Congress of Science of Weed, Centro de Convenções, Ribeirão Preto, 19-23 July 2010, 667-671.
Lima, M.E. (2007) Evaluation of the performance of the lettuce (Lactuca sativa) grown in an organic system of production under different irrigation and soil covers. Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Curso de Pós-Graduação em Fitotecnia, Seropédica.
Carrijo, O.A., Marouelli, W.A. and da Silva, H.R. (1999) Water management in vegetable production under protected cultivation. Informe Agropecuário. Belo Horizonte, 20, 45-71.
Santos, S.R. and Pereira, G.M. (2004) Behavior of the American type lettuce under different soil water tensions in greenhouse. Engenharia Agrícola, Jaboticabal, 24, 569-577.