Hydrological validation of High Wide Ridges as a soil conservation technology applied to tobacco crop.

High Wide Ridge Soil Management is a conservation practice associated with the no-tillage, reduced tillage, and conventional tillage systems, usual in small farms in southern Brazil. Integrated with winter grain or ground cover crops such as wheat (Triticum aestivum), rye (Secale cereale), black oats (Avena strigosa) and white oats (Avena sativa), millet (Pennisetum glaucum L.), Sudan grass (Sorghum sudanense), sorghum (Sorghum spp.), mucuna (Mucuna spp.), and brachiaria (Brachiaria spp.), high wide ridge is being used for tobacco (Nicotiana tabacum), soybean (Glycine max L.), maize (Zea mays), and beans (Phaseolus vulgaris) during the spring and summer seasons. The benefits expected from this technology, related to the performance of the tobacco crop, have already been proven experimentally and on a farm scale. However, the benefit in regard to the effectiveness in controlling runoff resulting from intense rainfall, has not yet been quantified. The aim of this study was to validate the effectiveness of the high wide ridge in containing runoff from intense rainfall, with return periods equal to, or greater than, 10 years. The study was carried out on 11 farms, located in nine municipalities (four in Rio Grande do Sul state, three in Santa Catarina state, and four in Paraná state), where tobacco was grown following winter cereal as a ground cover crop, on three types of topography (gently undulating topography, undulating topography, and highly undulating topography) with 11 soil types that were texturally and taxonomically different. It was concluded that high wide ridge is capable of containing the flooding generated by rainfall with return periods of more than 10 years, allowing the science of soil conservation to promote it as a conservation soil management practice.

Bibliographic Details

Main Authors:	DENARDIN, J. E., MARCON, G. P., FAGANELLO, A., LEMAINSKI, J., BACK, A. J., JUNQUEIRA, B. R., OLIVEIRA, V. B. de
Other Authors:	JOSE ELOIR DENARDIN, CNPT; GRACIOSO PIGNATEL MARCON, Técnico Agropecuário, Especialista em Manejo de Solo, pesquisador aposentado da Souza Cruz, Rua Argentina, 38, Vila Moema, 88705-340 Tubarão, SC.; ANTONIO FAGANELLO, Engenheiro mecânico, M.Sc. em Engenharia Agrícola, pesquisador aposentado da Embrapa Trigo, Passo Fundo, RS.; JORGE LEMAINSKI, CNPT; ÁLVARO JOSÉ BACK, Engenheiro Agrônomo, D.Sc. em Engenharia, pesquisador da Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri, Rua Presidente Vargas, 116, 88840-000 Urussanga, SC.; BARBARA RODRIGUES JUNQUEIRA, Engenheira Agrônoma, M.Sc. em Agronomia/Entomologia Agrícola, pesquisadora científica da Souza Cruz, Rodovia BR 471, km 132,4, Distrito Industrial, 96835-642 Santa Cruz do Sul, RS.; VANDO BRAZ DE OLIVEIRA, Técnico Agrícola, Bacharel em Administração, Especialista em Manejo de Solo e Nutrição de Plantas, Gerente Global de Melhoramento e Agronomia na Souza Cruz, Avenida General Plínio Tourinho, 3200, Bairro Bom Jesus, 83880-000 Rio Negro, PR.
Format:	Folhetos biblioteca
Language:	Ingles English
Published:	2021
Subjects:	Infiltration of water in the soil, Intense rain, Return period, High wide ridges, Direct planting system, Camalhão, Soil conservation, Soil, Tobacco,
Online Access:	http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131755
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