PRODUCTIVE-ECONOMIC BENEFIT OF FORAGE CACTUS-SORGHUM INTERCROPPING SYSTEMS IRRIGATED WITH SALINE WATER

Authors

  • Lucivania Rodrigues Lima Academic Unit of Serra Talhada, Universidade Federal Rural de Pernambuco, Serra Talhada, PE
  • Thieres George Freire da Silva Academic Unit of Serra Talhada, Universidade Federal Rural de Pernambuco, Serra Talhada, PE
  • Poliana de Caldas Pereira Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, MG
  • José Edson Florentino de Morais Universidade Federal Rural de Pernambuco, Recife, PE
  • Mery Cristina de Sá Assis Academic Unit of Serra Talhada, Universidade Federal Rural de Pernambuco, Serra Talhada, PE

DOI:

https://doi.org/10.1590/1983-21252018v31n122rc

Keywords:

O. stricta (Haw.) Haw. Agronomic performance. Economic profitability.

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.

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Author Biographies

Lucivania Rodrigues Lima, Academic Unit of Serra Talhada, Universidade Federal Rural de Pernambuco, Serra Talhada, PE

Mestre em Produção Vegetal

Poliana de Caldas Pereira, Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, MG

Doutoranda

José Edson Florentino de Morais, Universidade Federal Rural de Pernambuco, Recife, PE

Doutorando UFRPE

Mery Cristina de Sá Assis, Academic Unit of Serra Talhada, Universidade Federal Rural de Pernambuco, Serra Talhada, PE

Graduanda

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Published

11-12-2017

Issue

Section

Zootechnics