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Abstract(s)
A Herdade das Tapadas, situada no concelho de Alter do Chão (Portalegre), tem uma
área agrícola de 529,15 ha, onde se pratica maioritariamente uma bovinicultura
extensiva, em pastagens naturais em terra limpa e sob coberto de montado. A única área
regada é a vinha com 13,6 ha, que recorre a uma captação subterrânea. A construção
do Aproveitamento Hidráulico de Fins Múltiplos do Crato, conhecido como barragem
do Pisão, vem criar uma oportunidade única para esta exploração agrícola, uma vez que
cerca de 68% da área passa a estar beneficiada com água sob pressão do bloco de rega
de Alter do Chão. Neste trabalho, estuda-se a possibilidade de instalar olival em sebe
ou amendoal intensivo numa área de 350 ha que vai ter garantia de água para rega,
atualmente com pastagens naturais e que dispõe de solos com aptidão para o regadio.
A restante área da exploração mantem a ocupação cultural atual; a vinha de 13,6 ha e
cerca de 166 ha de pastagens em terra limpa ou sob coberto para a continuação da
eguada da Coudelaria Telles de Carvalho. Da avaliação da rentabilidade económico-
financeira que se fez para as duas culturas permanentes, verifica-se que o olival em sebe
é mais interessante, pois apresenta uma maior taxa interna de rentabilidade (17,23%),
um período de retorno do investimento menor (7 anos) e maiores possibilidades de
escoamento da produção, apesar do investimento inicial superar o do amendoal
intensivo, em cerca de 600.000 euros. A disponibilidade de água, em grande parte da
Herdade das Tapadas, vai permitir passar de uma agricultura extensiva de sequeiro,
pouco rentável, para uma agricultura de regadio, mais intensiva, que obriga a um elevado
investimento inicial, mas que assegura uma elevada rentabilidade no futuro.
The Herdade das Tapadas, located in the municipality of Alter do Chão (Portalegre), has an agricultural area of 529.15 ha, where extensive livestock farming is practiced, on natural pastures on clean land and under cork oak forest cover. The only irrigated area is the vineyard with 13.6 ha, which uses an underground catchment. The construction of the Crato Multi-Purpose Hydraulic Plant, known as the Pisão dam, creates a unique opportunity for this agricultural holding, since around 68% of the area now benefits from water under pressure from the Alter do Chão do irrigation block. In this work, we study the possibility of installing an olive hedge grove or intensive almond grove in an area of 350 ha that will have guaranteed water for irrigation, currently with natural pastures and which has soils suitable for irrigation. The remaining exploration area maintains its current cultural occupation; the 13.6 ha vineyard and around 166 ha of pastures on clean land or under cover, for the continuation of the Stud Farm Telles de Carvalho. Based on the assessment of the economic-financial profitability carried out for the two permanent crops, it appears that the olive hedge grove is more interesting, as it presents a higher internal rate of profitability, a shorter return on investment period and greater production flow possibilities, despite the initial investment exceeding that of intensive almonds, by around 600,000 euros. The availability of water, in a large part of Herdade das Tapadas, will allow to move from extensive rainfed agriculture, which is not very profitable, to more intensive irrigated agriculture, which requires a high initial investment, but which ensures high profitability in the future.
The Herdade das Tapadas, located in the municipality of Alter do Chão (Portalegre), has an agricultural area of 529.15 ha, where extensive livestock farming is practiced, on natural pastures on clean land and under cork oak forest cover. The only irrigated area is the vineyard with 13.6 ha, which uses an underground catchment. The construction of the Crato Multi-Purpose Hydraulic Plant, known as the Pisão dam, creates a unique opportunity for this agricultural holding, since around 68% of the area now benefits from water under pressure from the Alter do Chão do irrigation block. In this work, we study the possibility of installing an olive hedge grove or intensive almond grove in an area of 350 ha that will have guaranteed water for irrigation, currently with natural pastures and which has soils suitable for irrigation. The remaining exploration area maintains its current cultural occupation; the 13.6 ha vineyard and around 166 ha of pastures on clean land or under cover, for the continuation of the Stud Farm Telles de Carvalho. Based on the assessment of the economic-financial profitability carried out for the two permanent crops, it appears that the olive hedge grove is more interesting, as it presents a higher internal rate of profitability, a shorter return on investment period and greater production flow possibilities, despite the initial investment exceeding that of intensive almonds, by around 600,000 euros. The availability of water, in a large part of Herdade das Tapadas, will allow to move from extensive rainfed agriculture, which is not very profitable, to more intensive irrigated agriculture, which requires a high initial investment, but which ensures high profitability in the future.
Description
Keywords
Amendoal Olival Regadio Pisão Taxa Interna de Rentabilidade Almond grove Olive grove Internal rate of return Irrigation