Influence of Climate Variability and Soil Fertility on the Forage Quality and Productivity in Azorean Pastures

Catarina D. Melo, Cristiana S. A. M. Maduro Dias, Sophie Wallon, Alfredo E. S. Borba, João Madruga, Paulo A. V. Borges, Maria T. Ferreira and Rui B. Elias
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Catarina D. Melo: cE3c—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão João D’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Cristiana S. A. M. Maduro Dias: IITAA—Instituto de Investigação em Tecnologias Agrárias e do Ambiente, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão d’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Sophie Wallon: cE3c—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão João D’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Alfredo E. S. Borba: IITAA—Instituto de Investigação em Tecnologias Agrárias e do Ambiente, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão d’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
João Madruga: IITAA—Instituto de Investigação em Tecnologias Agrárias e do Ambiente, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão d’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Paulo A. V. Borges: cE3c—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão João D’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Maria T. Ferreira: cE3c—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão João D’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal
Rui B. Elias: cE3c—Centre for Ecology, Evolution and Environmental Changes, Azorean Biodiversity Group, Faculdade de Ciências Agrárias e do Ambiente, Universidade dos Açores, Rua Capitão João D’Ávila, São Pedro, PT-9700-042 Angra do Heroísmo, Portugal

Agriculture, 2022, vol. 12, issue 3, 1-18

Abstract: This work aimed to determine and compare the effect of elevation and season on the productivity and the nutritive value of pastures in the Azores (Terceira Island). Forage was collected and analysed for dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), acid detergent lignin (ADL), ether extract (EE), mineral ash (Ash), dry matter digestibility (DMD) and organic matter digestibility (OMD). The net productivity (NP) was higher in the low elevation pasture A (1.80 g m −2 ), lower in pasture B (0.98 g m −2 ) and peaked in the winter in both pastures A (3.57 g m −2 ) and B (2.33 g m −2 ) and during the summer in the high elevation pasture C (2.15 g m −2 ). The soil chemical proprieties varied significantly among the three pastures. The highest soil pH, available P, K, Ca and Mg were recorded in pasture A. Positive correlations were observed between all soil parameters analysed and NP, except for the OM content. The DM, PB and EE changed significantly with elevation, while all nutritive parameters (except CP, EE and Ash) increased significantly along the growth season. Environmental factors influenced the nutritive parameters and productivity, suggesting that climate change might have significant impacts on forage production and quality.

Keywords: forage production; nutritive values; digestibility; seasonal variation; soil type; island pastures; global warming (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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