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      PRODUCTIVE-ECONOMIC BENEFIT OF FORAGE CACTUS-SORGHUM INTERCROPPING SYSTEMS IRRIGATED WITH SALINE WATER Translated title: BENEFÍCIO PRODUTIVO-ECONÔMICO DO CONSÓRCIO PALMA FORRAGEIRA-SORGO IRRIGADO

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          Abstract

          ABSTRACT The objective of this study was to evaluate the productive and economic performance of a forage cactus and sorghum intercropping system in relation to a forage cactus single cropping system under different irrigation blades with saline water. The study was conducted in Serra Talhada, State of Pernambuco, in a randomized block design, consisting of a factorial arrangement with split-plot parcels (5×2) and four replications. The five plots were the irrigation depths based on the reference evapotranspiration (ETo) (0, 8.75, 17.5, 26.25, and 35% ETo) and the two cropping systems were single forage cactus cropping and cactus intercropped with sorghum. The experiment was conducted for one year, with one forage cactus cycle and two cycles of sorghum. Yields were obtained at the end of the cycles. Economic profitability was analyzed by means of net revenue (NR) and the benefit/cost ratio (B/C), with cactus forage sold as forage or as "seed" and sorghum as forage. Net revenue and B/C simulations were carried out over an eight-year useful life span of the irrigation system. Increasing irrigation depth increased the dry matter yield of the intercropping system because of higher sorghum yield. Based on the NR and B/C ratio values, forage cactus and sorghum produced as forage produced higher economic outcomes in the intercropping system and showed a higher profitability from the 2nd year of implementation of the irrigation system. Forage cactus and sorghum intercropping irrigated with saline water is therefore recommended for forage production in the Brazilian semi-arid region.

          Translated abstract

          RESUMO Objetivou-se avaliar o desempenho produtivo-econômico da consorciação palma forrageira e sorgo em relação ao sistema de plantio exclusivo da palma forrageira sob diferentes lâminas de irrigação com água salina. A pesquisa foi conduzida em Serra Talhada, PE, com delineamento em blocos ao acaso, arranjo fatorial com parcelas subdivididas (5×2), quatro repetições, sendo considerada como parcelas as lâminas de irrigação complementar com base na evapotranspiração de referência (0; 8,75; 17,5; 26,25 e 35% ETo), e as subparcelas, os sistemas de plantio: palma exclusiva e consórcio palma-sorgo. O experimento foi conduzido por um ano, sendo um ciclo de palma e dois ciclos do sorgo. Ao final foram obtidas as produtividades de matéria fresca e seca. A rentabilidade econômica foi analisada por meio da receita líquida (RL) e da relação benefício/custo (B/C) da palma destinada à venda tanto para forragem como “semente” para o plantio, e do sorgo para produção de forragem. Simulações de RL e B/C foram feitas ao longo da vida útil de oito anos do sistema de irrigação. As lâminas de água aumentaram a produtividade de matéria seca do consórcio, devido ao benefício gerado ao sorgo. Com base na RL e B/C, verificou-se que a palma e o sorgo destinados à venda como forragem mostraram mais vantagem quando consorciadas e maior rentabilidade a partir do 2º ano de implantação do sistema de irrigação. Conclui-se que, o consórcio palma forrageira e sorgo irrigado com água salina deve ser recomendado para a produção de forragem no Semiárido brasileiro.

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          Productivity of Opuntia ficus-indica (L.) Miller under different N and P fertilization and plant population in north-east Brazil

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            Crescimento e produtividade de clones de palma forrageira no semiárido e relações com variáveis meteorológicas

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              Yield and water consumption characteristics of wheat/maize intercropping with reduced tillage in an Oasis region

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rcaat
                Revista Caatinga
                Rev. Caatinga
                Universidade Federal Rural do Semi-Árido (Mossoró, RN, Brazil )
                0100-316X
                1983-2125
                March 2018
                : 31
                : 1
                : 191-201
                Affiliations
                [3] Viçosa Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Department of Agricultural Engineering Brazil po.caldas@ 123456hotmail.com
                [4] Recife Pernambuco orgnameUniversidade Federal Rural de Pernambuco Brazil joseedson50@ 123456hotmail.com
                [2] Serra Talhada orgnameUniversidade Federal Rural de Pernambuco orgdiv1Academic Unit of Serra Talhada Brazil lucivania_rodrigues@ 123456hotmail.com
                Article
                S1983-21252018000100191
                10.1590/1983-21252018v31n122rc
                3f7ea8b5-3c62-4e66-bd30-5bb7e3ca24d4

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 08 March 2017
                : 15 July 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 21, Pages: 11
                Product

                SciELO Brazil


                stricta (Haw.) Haw,Desempenho agronômico,Rentabilidade econômica.,O,Agronomic performance,Economic profitability.

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