Combined effects of irrigation, crop load and fruit position on size, color and firmness of fruits in an extra-early cultivar of peach

Alcobendas, Rosalía; Mirás-Avalos, José Manuel; Alarcón, Juan José; Pedrero, F.; Nicolás, Emilio

doi:10.1016/j.scienta.2012.05.003

Cited by 48 publications

(43 citation statements)

References 28 publications

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“…The negative effects of water stress on fruit could be partially compensated by more severe fruit thinning, as previously reported for mid-late maturing peach cultivars in Mediterranean regions López et al, 2010). However, no improvement in fruit size in low loaded early-maturing peach trees was observed under deficit irrigation conditions (Alcobendas et al, 2012).…”

Section: Crop Load and Peach Tree Growthsupporting

confidence: 63%

“…The early maturing nature of the studied peach cultivar and the adequate water supply, as indicated by the high soil water content values in both crop load treatments, may have been responsible for the absence of significant differences in plant water status, reflecting the results obtained by Naor et al (1999), Conejero et al (2010) and Alcobendas et al (2012), who reported no differences in Y stem values even between extreme crop load treatments (unthinned and defruited). In this sense, too, Berman & DeJong (1996) indicated that in wellwatered peach trees, plant water status was independent of crop load, while in trees receiving reduced irrigation, the degree of water stress increased with increasing crop load, water-stressed trees with heavy crop loads making significantly greater demands, thus limiting photosynthesis.…”

Section: Crop Load and Peach Tree Growthmentioning

confidence: 66%

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Root and aerial growth in early-maturing peach trees under two crop load treatments

Abrisqueta

Conejero

López-Martínez

et al. 2017

Span. j. agric. res.

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The objectives of the paper were to study the pattern of root growth (measured by minirhizotrons) in relation to trunk, fruit and shoot growth and the effects of crop load on tree growth and yield in peach trees. Two crop load (commercial and low) treatments were applied in a mature early-maturing peach tree orchard growing in Mediterranean conditions. Root growth dynamics were measured using minirhizotrons during one growing season. Shoot, trunk and fruit growth were also measured. At harvest, all fruits were weighed, counted and sized. Roots grew throughout the year but at lower rates during the active fruit growth phase. Root growth was asynchronous with shoot growth, while root and trunk growth rates were highest after harvest, when the canopy was big enough to allocate the photo-assimilates to organs that would ensure the following season's yield. Shoot and fruit growth was greater in the low crop load treatment and was accompanied by a non-significant increase in root growth. High level of fruit thinning decreased the current yield but the fruits were more marketable because of their greater size.Additional keywords: fruit growth; minirhizotrons; phenology; Prunus persica L. Batsch; root length density; vegetative growth

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Section: Crop Load and Peach Tree Growthsupporting

confidence: 63%

Section: Crop Load and Peach Tree Growthmentioning

confidence: 66%

Root and aerial growth in early-maturing peach trees under two crop load treatments

Abrisqueta

Conejero

López-Martínez

et al. 2017

Span. j. agric. res.

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show abstract

“…One of the difficulties with production estimation in orchards is the trade-off between fruit yield and fruit quality [16,28,36,42,49]. This link between fruit quality and quantity was also visible in the irrigated orchard (Table 1; Figure 4a,b; Figure 5e,f).…”

Section: Potential and Limitationsmentioning

confidence: 96%

“…Average daily amount of rain deficit (or surplus) was calculated based on cumulative differences of precipitation and ETo [27,28]. To account for data gaps and measurement errors, the precipitation and ETo data from both monitoring stations was averaged on a daily basis prior to the calculation of cumulative available water.…”

Section: Environmental Datamentioning

confidence: 99%

Temporal Dependency of Yield and Quality Estimation through Spectral Vegetation Indices in Pear Orchards

et al. 2015

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Yield and quality estimations provide vital information to fruit growers, yet require accurate monitoring throughout the growing season. To this end, the temporal dependency of fruit yield and quality estimations through spectral vegetation indices was investigated in irrigated and rainfed pear orchards. Both orchards were monitored throughout three consecutive growing seasons, including spectral measurements (i.e., hyperspectral canopy reflectance measurements) as well as yield determination (i.e., total yield and number of fruits per tree) and quality assessment (i.e., fruit firmness, total soluble solids and fruit color). The results illustrated a clear association between spectral vegetation indices and both fruit yield and fruit quality (|r| > 0.75; p < 0.001). However, the correlations between vegetation indices and production variables varied throughout the growing season, depending on the phenological stage of fruit development. In the irrigated orchard, index values showed a strong association with production variables near time of OPEN ACCESSRemote Sens. 2015, 7 9887 harvest (|r| > 0.6; p < 0.001), while in the rainfed orchard, index values acquired during vegetative growth periods presented stronger correlations with fruit parameters (|r| > 0.6; p < 0.001). The improved planning of remote sensing missions during (rainfed orchards) and after (irrigated orchards) vegetative growth periods could enable growers to more accurately predict production outcomes and improve the production process.

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“…One of the most important aspects to control when extending whole or fresh-cut produce's shelf-life is raw material and its quality and pre-harvest conditions. Namely, cultivar selection is a crucial step for minimal processing because most fruits and vegetables constituents are dependent on pre-harvest conditions (for example, harvest date), affecting quality and post-harvest or freshcut behavior (Artés and Allende 2005;Pérez-Marín et al 2011;Alcobendas et al 2012). For instance, functional or enzyme content depend on cultivar, both of them playing an important role in enzymatic browning.…”

Section: Introductionmentioning

confidence: 99%

Cultivar characterization of stone fruits for their minimal processing

2013

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Due to their physicochemical properties, minimal processing of fruits is challenging because of their quick quality loss. Therefore, several preservative steps are needed, such as washing treatments, modified atmosphere packaging, cultivar selection, etc. The latter is an important pre-harvest condition due to the fact that many functional compounds and enzymes are dependent on the cultivar. The aim of this study was to compare the minimal processing adaptation of different stone fruits (nectarine, peach, and plum), focusing on visual and functional quality. The fruit underwent minimal processing in a clean room (temperature and relative humidity were kept at 8°C and 70 %, respectively) and was washed during 2 min into 2 % w/v ascorbic acid, 1 % w/v citric acid, and 1 % w/v calcium lactate solution. To sum up, nectarine and peach offered a better adaptation, and medium-season cultivars had higher quality maintenance. Nevertheless, late cultivars should not be ruled out before hand on account of their remarkable functional content.

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Combined effects of irrigation, crop load and fruit position on size, color and firmness of fruits in an extra-early cultivar of peach

Cited by 48 publications

References 28 publications

Root and aerial growth in early-maturing peach trees under two crop load treatments

Root and aerial growth in early-maturing peach trees under two crop load treatments

Temporal Dependency of Yield and Quality Estimation through Spectral Vegetation Indices in Pear Orchards

Cultivar characterization of stone fruits for their minimal processing

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