Loading...
Publication
Avaliação da variabilidade espacial do crescimento, desenvolvimento e produtividade numa vinha no Alentejo
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.66 MB | Adobe PDF |
Authors
Abstract(s)
O setor do vinho é um setor com bastante importância para economia portuguesa, sendo
Portugal um dos principais países exportadores a nível mundial. O setor vitivinícola,
enfrenta cada vez mais desafios, desde a exigência de certificações, ao aumento dos custos
de produção e à responsabilidade ambiental e promoção da sustentabilidade dos
ecossistemas. É neste sentido que a utilização do conceito de Viticultura de Precisão tem
ganho cada vez mais importância. Neste trabalho pretendeu-se avaliar a variabilidade
espacial do crescimento, desenvolvimento e produtividade numa vinha no Alentejo,
localizada em Santo Aleixo, na Herdade da Torrre de Curvo. Com esse objetivo
estabeleceu-se um estudo delineado em split-plot, onde o main-plot foi a casta (Alicante
Bouschet, Aragonez e Trincadeira). Dentro de cada plot, foram efetuadas três repetições,
cada repetição, cuja localização era fixada aleatoriamente, possuía 6 plantas contiguas
(claro). Foram avaliadas métricas que caracterizam o vigor e produção ao nível da planta.
Dos principais resultados obtidos podemos concluir os principais fatores limitativos da
produtividade desta vinha são o baixo número de cachos por planta, baixo vigor e
desenvolvimento das plantas e compactação do solo. Após a análise dos dados, e perceção
dos fatores limitativos desta vinha, foi possível sugerir algumas alterações culturais, tais
como mobilizações para descompactação do solo, aplicação de matéria orgânica e uma
poda longa. Para verificar se as medidas de alteração implementadas promoveram o
aumento de vigor nesta vinha, foram utilizadas imagens de NDVI para verificar se este
índice de vegetação apresentava diferenças entre os anos em que decorreu o trabalho
experimental. Em 2019 os valores de NDVI estavam entre 0,21 e 0,29, em 2020 entre
0,33 e 0,4 e em 2021 0,25 e 0,4, notando-se de forma evidente uma melhoria do vigor
desta vinha após a implementação das medidas de alteração sugeridas.
The wine sector is a very important sector for the national economy, with Portugal being one of the main exporting countries in the world. The wine sector is facing more and more challenges, from the requirement for certifications, to the increase in production costs and to environmental responsibility and promotion of the sustainability of ecosystems. It is in this sense that the use of the concept of Precision Viticulture has gained increasing importance. This work aimed to evaluate the spatial variability of growth, development and productivity in a vineyard in Alentejo, located in Santo Aleixo, in Herdade da Torre de Curvo. With this aim, a study delineated in split-plot was established, where the main- plot was the variety (Alicante Bouschet, Aragonez and Trincadeira). Within each plot, three repetitions were performed, each repetition, whose location was randomly fixed, had 6 contiguous plants (of course). Metrics that characterize vigor and yield at the plant level were evaluated. From the main results obtained, we can conclude that the main factors limiting the productivity of this vineyard are the low number of bunches per plant, low vigor and development of plants and soil compaction. After analyzing the data, and understanding the limiting factors of this vineyard, it was possible to suggest some cultural changes, such as mobilizations for soil decompaction, application of organic matter and long pruning. To verify if the implemented alteration measures promoted the increase of vigor in this vineyard, NDVI images were used to verify if this vegetation index presented differences between the years in which the experimental work took place. In 2019 the NDVI values were between 0.21 and 0.29, in 2020 between 0.33 and 0.4 and in 2021 0.25 and 0.4, clearly noting an improvement in the vigor of this vine after the implementation of the measures suggested changes.
The wine sector is a very important sector for the national economy, with Portugal being one of the main exporting countries in the world. The wine sector is facing more and more challenges, from the requirement for certifications, to the increase in production costs and to environmental responsibility and promotion of the sustainability of ecosystems. It is in this sense that the use of the concept of Precision Viticulture has gained increasing importance. This work aimed to evaluate the spatial variability of growth, development and productivity in a vineyard in Alentejo, located in Santo Aleixo, in Herdade da Torre de Curvo. With this aim, a study delineated in split-plot was established, where the main- plot was the variety (Alicante Bouschet, Aragonez and Trincadeira). Within each plot, three repetitions were performed, each repetition, whose location was randomly fixed, had 6 contiguous plants (of course). Metrics that characterize vigor and yield at the plant level were evaluated. From the main results obtained, we can conclude that the main factors limiting the productivity of this vineyard are the low number of bunches per plant, low vigor and development of plants and soil compaction. After analyzing the data, and understanding the limiting factors of this vineyard, it was possible to suggest some cultural changes, such as mobilizations for soil decompaction, application of organic matter and long pruning. To verify if the implemented alteration measures promoted the increase of vigor in this vineyard, NDVI images were used to verify if this vegetation index presented differences between the years in which the experimental work took place. In 2019 the NDVI values were between 0.21 and 0.29, in 2020 between 0.33 and 0.4 and in 2021 0.25 and 0.4, clearly noting an improvement in the vigor of this vine after the implementation of the measures suggested changes.
Description
Keywords
Videira Deteção Remota Viticultura de Precisão NDVI Precision Viticulture Vine Remote Sensing