Sustentabilidade do cultivo de mandioca em comunidades indígenas do Pantanal Brasileiro

Authors

DOI:

https://doi.org/10.33448/rsd-v10i1.12070

Keywords:

Phytosociology; Intercrop; Weeds; Pantanal; Indigenous communities.

Abstract

We aimed with this study to help maximizing cassava production for subsistence in indigenous communities at the Brazilian Pantanal, by introducing minimal changes to the usual indigenous way of cultivation aiming to reduce human labor in weed management in this crop. For that, we tested distinct intercrops and phosphate sources, taking the Babassu Indigenous Village, located in Miranda‑MS, Brazil, as a reference. The experiment involved the intercrop of cassava with pigeon pea (Cajanus cajan), jack‑bean (Canavalia ensiformis) and millet (Pennisetum americanum) and the source of phosphate fertilizer (mycorrhizal inoculants, P2O5 and without fertilization / mycorrhizal inoculum). Soil samples were collected to study the soil seed bank of spontaneous species. We adopted the phytosociological method to assess the absolute level of infestation, its composition density, frequency, dominance and importance value, and diversity coefficients of Simpson and Shannon-Weiner, as well as the Shannon Evenness Proportion (a sustainability coefficient) for all treatments. Areas were also grouped by similarity of plant species. Cultivation of cassava for subsistence in indigenous areas also selects certain spontaneous species, and management should focus in removing mostly by hand those established in the crop row; the damage to the crop may be higher in years of high abiotic stresses. There is no effect of phosphate supply source (P) in the level or composition of spontaneous species. There is clear evidence that the continued cultivation of cassava for subsistence in indigenous areas of the Brazilian Pantanal is sustainable over time, mainly when intercropped with other food species.

References

Barbour, M. G., Burk, J. H., Pitts, W. D., Gilliam, F. S. & Schwartz, M. W. (1998). Terrestrial plant ecology. Menlo Park: Benjamin/Cummings.

Concenço, G., Tomazi, M., Correia, I. V. T., Santos, S. A., & Galon, L. (2013). Phytosociological surveys: tools for weed science? Planta Daninha, 31, 469 482.

Maluf, A. M. (1999). Interspecific interference between Amaranthus hybridus L. and Amaranthus viridis L. Pesquisa Agropecuária Brasileira, 34, 723 732.

McManus, J. W., & Pauly, D. (1990). Measuring ecological stress: variations on a theme by R. M. Warwick. Marine Biology, 106, 305 309.

Miranda, I. J., Lavina, M. L. & Poa, A. C. (1995). Controle de plantas daninhas na cultura da mandioca através de herbicidas pré-emergentes pós-plantio em podzólico vermelho amarelo distrófico. Congresso Brasileiro de Herbicidas e Plantas Daninhas, 20, 138-139.

Moura, G. M. (2000). Weed interference with cassava (Manihot esculenta) crop at the state of Acre - Brazil. Planta Daninha, 18, 451-456.

Otsubo, A. A., Mercante, F. M., Silva, R. F. & Borges, C. D. (2008). Soil tillage systems, cover crops and productivity in cassava. Pesquisa Agropecuária Brasileira, 43, 327-332.

Pandeya, S. C., Puri, G. S. & Singh, J. S. (1968). Research methods in plant ecology. Asia Publishing House.

R Development Core Team. (2011). R: A language and environment for statistical computing. R Foundation.

Sieverding, E. (1991). Vesicular–arbuscular mycorrhiza management in tropical agrosystems. Eschborn. GTZ.

Silva, A. A., Ferreira, E. A. & Santos, J. B. (2007). Biologia de plantas daninhas. In: Silva, A. A. & Silva, J. F. Tópicos em manejo de plantas daninhas. Viçosa: Universidade Federal de Viçosa.

Silva, F. S. B., Yano Melo, A. M. & Maia, L. C. (2007). Production and infectivity of inolocum arbuscular mycorrhizal fungi multiplied in a substrate supplemented with Tris–HCl buffer. Brazilian Journal of Microbiology, 38, 752–755.

Sneath, P. H. & Sokal, R. R. (1973). Numerical taxonomy: the principles and practice of numerical classification. San Francisco: W. H. Freeman.

Sokal, R. R. & Rohlf, F. J. (1962). The comparison of dendrograms by objective methods. Taxon, 11, 33-40.

Souza, F. A., Trufem, S. F. B., Almeida, D. L., Silva, E. M. R. & Guerra, J. G. M. (1999). Effect of pre-crops on the inoculum potential of arbuscular mycorrhizal fungi and cassava yield. Pesquisa Agropecuária Brasileira, 34, 1913-1923.

Souza, L. D., Souza, L. S. & Gomes, J. C. (2006). Exigências edáficas da cultura da mandioca. In: Souza, L. S., Farias, A. R. N., Mattos, P. L. P. & Fukuda, W. M. G. (2006). Aspectos socioeconômicos e agronômicos da mandioca. Cruz das Almas: Embrapa Mandioca e Fruticultura Tropical.

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Published

31/01/2021

How to Cite

CONCENCO, G.; TOMAZI, M.; MARQUES, R. F. .; CHANDRA, S.; CHANDOLA, V.; MELO, T. S. .; SILVA, L. B. X. da . Sustentabilidade do cultivo de mandioca em comunidades indígenas do Pantanal Brasileiro. Research, Society and Development, [S. l.], v. 10, n. 1, p. e56010112070, 2021. DOI: 10.33448/rsd-v10i1.12070. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/12070. Acesso em: 28 feb. 2021.

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Section

Agrarian and Biological Sciences