Vegetative Development: Total Leaf Area and Surface Area Indexes

Sánchez-de-Miguel, P.; Baeza, Pilar; Junquera, Pedro; Lissarrague, J.R.

doi:10.1007/978-90-481-9283-0_3

Cited by 14 publications

(10 citation statements)

References 17 publications

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“…Surface area (SA) was estimated in 6 vines/treatment, after veraison, when shoot growth had ceased, following the method proposed by Sánchez de Miguel et al (2010), in which the width and height of the canopy are collected at five different spots along the vine using a measurement tape.…”

Section: Discussionmentioning

confidence: 99%

Influence of cover crop treatments on the performance of a vineyard in a humid region

Trigo-Córdoba¹,

Bouzas-Cid²,

Orriols-Fernández³

et al. 2015

Span. j. agric. res.

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Vineyards are usually managed by tilling the inter-rows to avoid competition from other plants for soil water and nutrients. However, in humid and sub-humid climates, such as that of NW Spain, cover crops may be an advantage for controlling vine vegetative growth and improving berry composition, while reducing management costs. The current study was conducted over three consecutive growing seasons (2012)(2013)(2014) to assess the effects of establishing three permanent cover crop treatments on water relations, vine physiology, yield and berry composition of a vineyard of the red cultivar 'Mencía' (Vitis vinifera L.) located in Leiro, Ourense. Treatments consisted of four different soil management systems: ST, soil tillage; NV, native vegetation; ER, English ryegrass (Lolium perenne L.); and SC, subterranean clover (Trifolium subterraneum L.). Midday stem water potential was more negative in the native vegetation treatment, causing significant reductions in leaf stomatal conductance on certain dates. Total vine leaf area and pruning weight was reduced in the cover crop treatments in the last year of the experiment. Yield was unaffected by the presence of a cover crop. No significant differences among treatments were observed for berry composition; however, wines were positively affected by the SC treatment (higher tannin content and colour intensity and lower malic acid concentration when compared with ST). Wines from the cover crop treatments were preferred by taste panelists. These results indicate that in humid climates cover crop treatments can be useful for reducing vine vegetative growth without compromising yield and berry quality.Additional key words: berry composition; cover crops; Mencía grapevine; tillage; sustainability; wine composition.

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Section: Discussionmentioning

confidence: 99%

Influence of cover crop treatments on the performance of a vineyard in a humid region

Trigo-Córdoba¹,

Bouzas-Cid²,

Orriols-Fernández³

et al. 2015

Span. j. agric. res.

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show abstract

“…External leaf area was estimated after veraison, when shoot growth had ceased, following the method proposed by Sánchez- de-Miguel et al (2010), in which the width and height of the canopy are collected at five different spots along the vine using a measurement tape. Data on SA could not be obtained in 2013 because vines were trimmed prior to the performing of these measurements.…”

Section: Yearmentioning

confidence: 99%

Effects of deficit irrigation on the performance of grapevine (Vitis vinifera L.) cv. ‘Godello’ and ‘Treixadura’ in Ribeiro, NW Spain

Trigo-Córdoba

Bouzas-Cid²,

Orriols-Fernández³

et al. 2015

Agricultural Water Management

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“…The vegetative variables, pruning weight, main leaf area and secondary leaf area, and the productive variable, yield, were transformed to surface units (per m 2 ) by dividing them by the vine spacing [28].…”

Section: Field Data Acquisition Of Vegetative and Yield Components Bmentioning

confidence: 99%

Using RPAS Multi-Spectral Imagery to Characterise Vigour, Leaf Development, Yield Components and Berry Composition Variability within a Vineyard

et al. 2015

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Implementation of precision viticulture techniques requires the use of emerging sensing technologies to assess the vineyard spatial variability. This work shows the capability of multispectral imagery acquired from a remotely piloted aerial system (RPAS), and the derived spectral indices to assess the vegetative, productive, and berry composition spatial variability within a vineyard (Vitis vinifera L.). Multi-spectral imagery of 17 cm spatial resolution was acquired using a RPAS. Classical vegetation spectral indices and two newly defined normalised indices, NVI1 = (R802 − R531)/(R802 + R531) and NVI2 = (R802 − R570)/(R802 + R570), were computed. Their spatial distribution and relationships with grapevine vegetative, yield, and berry composition parameters were studied. Most of the spectral indices and field data varied spatially within the vineyard, as showed through the variogram parameters. While the correlations were significant but moderate among the spectral indices and the field variables, the kappa index showed that the spatial pattern of the spectral indices agreed with that of the vegetative variables (0.38-0.70) and mean cluster weight (0.40). These results proved the utility of the OPEN ACCESSRemote Sens. 2015, 7 14459 multi-spectral imagery acquired from a RPAS to delineate homogeneous zones within the vineyard, allowing the grapegrower to carry out a specific management of each subarea.

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Vegetative Development: Total Leaf Area and Surface Area Indexes

Cited by 14 publications

References 17 publications

Influence of cover crop treatments on the performance of a vineyard in a humid region

Influence of cover crop treatments on the performance of a vineyard in a humid region

Effects of deficit irrigation on the performance of grapevine (Vitis vinifera L.) cv. ‘Godello’ and ‘Treixadura’ in Ribeiro, NW Spain

Using RPAS Multi-Spectral Imagery to Characterise Vigour, Leaf Development, Yield Components and Berry Composition Variability within a Vineyard

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