Empresa de Pesquisa Agropecuaria do Estado da Paraiba

João Pessoa, Brazil

Empresa de Pesquisa Agropecuaria do Estado da Paraiba

João Pessoa, Brazil

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Mello M.L.V.L.,Federal Rural University of Pernambuco | Da Silva D.S.,Federal University of Paraiba | De Andrade A.P.,Federal University of Paraiba | Pereira W.E.,Federal University of Paraiba | Ramos J.P.F.,Empresa de Pesquisa Agropecuaria do Estado da Paraiba
Revista Caatinga | Year: 2014

The objective of this research was to characterize the spineless forage cactus production in the semi-arid region of Paraiba State in the Northeast of Brazil. Information from 199 interviews carried out in the rural area of municipal districts in the Paraiban Cariri region was used. The interviews were conducted from February 2008 through August 2009. The data were tabulated in a spreadsheet, where a matrix with the questions and answers of each interviewee was established. The production systems were defined using principal component analysis, followed by cluster grouping of quantitative variables. The first three principal components explained 61.60% of total variation. The application of cluster analysis, based on scores of the three main components, identified four cactus forage groups of producers. The livestock activity prevails on the agriculture and it is imposed as an appropriate activity in the production systems of the agriculture sector in the Paraiban Cariri region. The cultivation of forage cactus predominates over other cultivated forage plants, being fully incorporated into the local productive process of Paraiban Cariri region.


Ramos J.P.F.,Empresa de Pesquisa Agropecuaria do Estado da Paraiba | Leite M.L.M.V.,Federal Rural University of Pernambuco | de Oliveira Junior S.,Empresa de Pesquisa Agropecuaria do Estado da Paraiba | do Nascimento J.P.,Empresa de Pesquisa Agropecuaria do Estado da Paraiba | Santos E.M.,Federal University of Paraiba
Revista Caatinga | Year: 2011

The objective of this paper was to evaluate the vegetative growth, the chemical composition, the rain use efficiency and to determine the green and dry matter production of cactus forage cv. Italian (Opuntia ficus-indica Mill.), depending on planting spacing. The research was carried out at (EMEPA), in Soledade- Pb, from April 2007 to June 2008. The e×perimental design was in randomized blocks, with four repetitions. In order to evaluate crop under the four planting spacing (1 × 1; 1 × 0.5; 2 × 1; 2 × 0.5 m) we measured plant height, number of cladodes per plant, and the order, length, width, perimeter, thickness and area of cladodes. There were no treatment effects (P > 0.05) on any of the growth variables evaluated, except for plant height and cladode width. The cactus pear showed low levels of fibrous carbohydrates, and planting spacing influenced levels of neutral detergent fiber. The phytomass production per area and rain use efficiency by cactus pear increased with increases in planting densities, with higher values observed for the spacing of 1 × 0.5 m; resulting in a greater quantity of forage produced per area and per unit of rain.

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