Effects of different irrigation regimes on a super-high-density olive grove cv. “Arbequina”: vegetative growth, productivity and polyphenol content of the oil

New Super-High-Density (SHD) olive orchards designed for mechanical harvesting are increasing very rapidly in Spain. Most studies have focused in effectively removing the olive fruit, however the machine needs to put significant amount of energy on the canopy that could result in structural damage or extra stress on the trees. During harvest, a series of 3-axis accelerometers were installed on the tree structure in order to register vibration patterns. A LiDAR (Light Detection and Ranging) and a camera sensing device were also mounted on a tractor. Before and after harvest measurements showed significant differences in the LiDAR and image data. A fast estimate of the damage produced by an over-the-row harvester with contactless sensing could be useful information for adjusting the machine parameters in each olive grove automatically in the future.

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Effects of Rootstock, Tree Density and Training System on Early Growth, Yield and Fruit Quality of Blush Pear

HortScience ◽

10.21273/hortsci16146-21 ◽

2021 ◽

pp. 1-8

Author(s):

Lexie McClymont ◽

Ian Goodwin ◽

Desmond Whitfield ◽

Mark O’Connell ◽

Susanna Turpin

Keyword(s):

Fruit Quality ◽

Vegetative Growth ◽

Fruit Size ◽

Growth Yield ◽

Substantial Effect ◽

Training System ◽

Tree Density ◽

High Density ◽

Marketable Yield ◽

And Training

Vegetative growth, orchard productivity, fruit quality and marketable yield were evaluated for rootstock (D6, BP1 and Quince A), tree density (741–4444 trees/ha), and training system (Open Tatura trellis, two-dimensional vertical and three-dimensional traditional) effects on young trees of the blush pear cultivar ‘ANP-0131’. ‘ANP-0131’ is a vigorous scion and vegetative growth, precocity, and yield were influenced by the selected rootstocks. Tree density and training system treatments exerted a substantial effect on canopy radiation interception while increasing tree density improved yield. Increasing tree density from 2222 (high density) to 4444 (ultra-high density) trees/ha did not improve cumulative yield. Crop load affected fruit size, such that “marketable” yield (yield of fruit weighing between 150 and 260 g) was greatest for trees on D6 rootstock and trained to Open Tatura trellis at high and ultra-high densities.

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Effect of growth retardants on vegetative growth, yield and fruit quality of high density peach trees.

Journal of Applied Horticulture ◽

10.37855/jah.2005.v07i02.36 ◽

2005 ◽

Vol 07 (02) ◽

pp. 139-141

Author(s):

Ratan Kumar ◽

R.M. Rai ◽

R.B. Singh ◽

N. Pant

Keyword(s):

Fruit Quality ◽

Vegetative Growth ◽

Growth Yield ◽

High Density ◽

Growth Retardants ◽

Peach Trees

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Potential of Hyperspectral and Thermal Proximal Sensing for Estimating Growth Performance and Yield of Soybean Exposed to Different Drip Irrigation Regimes Under Arid Conditions

Sensors ◽

10.3390/s20226569 ◽

2020 ◽

Vol 20 (22) ◽

pp. 6569 ◽

Cited By ~ 1

Author(s):

Adel H. Elmetwalli ◽

Salah El-Hendawy ◽

Nasser Al-Suhaibani ◽

Majed Alotaibi ◽

Muhammad Usman Tahir ◽

...

Keyword(s):

Vegetative Growth ◽

Growth Stage ◽

Plant Traits ◽

Growth Traits ◽

Water Status ◽

Accurate Estimation ◽

Growth Stages ◽

Irrigation Level ◽

Arid Conditions ◽

Irrigation Regimes

Proximal hyperspectral sensing tools could complement and perhaps replace destructive traditional methods for accurate estimation and monitoring of various morpho-physiological plant indicators. In this study, we assessed the potential of thermal imaging (TI) criteria and spectral reflectance indices (SRIs) to monitor different vegetative growth traits (biomass fresh weight, biomass dry weight, and canopy water mass) and seed yield (SY) of soybean exposed to 100%, 75%, and 50% of estimated crop evapotranspiration (ETc). These different plant traits were evaluated and related to TI criteria and SRIs at the beginning bloom (R1) and full seed (R6) growth stages. Results showed that all plant traits, TI criteria, and SRIs presented significant variations (p < 0.05) among irrigation regimes at both growth stages. The performance of TI criteria and SRIs for assessment of vegetative growth traits and SY fluctuated when relationships were analyzed for each irrigation regime or growth stage separately or when the data of both conditions were combined together. TI criteria and SRIs exhibited a moderate to strong relationship with vegetative growth traits when data from different irrigation regimes were pooled together at each growth stage or vice versa. The R6 and R1 growth stages are suitable for assessing SY under full (100% ETc) and severe (50% ETc) irrigation regimes, respectively, using SRIs. The overall results indicate that the usefulness of the TI and SRIs for assessment of growth, yield, and water status of soybean under arid conditions is limited to the growth stage, the irrigation level, and the combination between them.

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Evaluation study for the effect of four mango rootstocks on behaviour of Keit mango variety

International Journal of Horticultural Science ◽

10.31421/ijhs/17/4-5/968 ◽

2011 ◽

Vol 17 (4-5) ◽

Cited By ~ 1

Author(s):

M. Zayan ◽

S. Zeerban ◽

A. El-Samak ◽

A. Ezzat

Keyword(s):

Root Growth ◽

Organic Substance ◽

Vegetative Growth ◽

Growth Parameter ◽

Evaluation Study ◽

High Density ◽

Tree Size ◽

Growth Behaviour ◽

Short Time ◽

Growth Characters

Our investigation was carried out in four mango rootstocks were namely Zebda, Socaria, 13/1 an 4/9. This study reviewed the effect of these rootstocks on growth behaviour of Keit mango variety as a scion grown on them. This evaluation and comparison included data on following aspects: the vegetative growth characters, root growth parameter, uptake of some macro nutrient and some organic substance. All results in this regard refer that the Socaria rootstock gave the highest values off all parameters so it is considered as a vigorous rootstocks, means that the trees on this rootstocks will reach to high size after short time. By contrast, Zebda rootstocks gave the lowest values in this concern and this will reflect on tree size on it. This means that the Zebda rootstocks will be useful in the system of high density orchard comparing with Socaria. Concerning to other rootstocks, they were intermediate between Socaria and Zebda rootstocks.

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Landscape Characteristics Affecting Small Mammal Occurrence in Heterogeneous Olive Grove Agro-Ecosystems

Conservation ◽

10.3390/conservation2010005 ◽

2022 ◽

Vol 2 (1) ◽

pp. 51-68

Author(s):

Isabel Barão ◽

João Queirós ◽

Hélia Vale-Gonçalves ◽

Joana Paupério ◽

Ricardo Pita

Keyword(s):

Complex Structure ◽

High Density ◽

Pest Species ◽

Olive Grove ◽

Agricultural Field ◽

Occupancy Modelling ◽

Landscape Characteristics ◽

Species Of Conservation Concern ◽

Olive Groves ◽

Potential Pest

Understanding how small mammals (SM) are associated with environmental characteristics in olive groves is important to identify potential threats to agriculture and assess the overall conservation value and functioning of agro-ecosystems. Here, we provide first insights on this topic applied to traditional olive groves in northeast (NE) Portugal by assessing the landscape attributes that determine SM occurrence, focusing on one species of conservation concern (Microtus cabrerae Thomas 1906) and one species often perceived as a potential pest of olives (Microtus lusitanicus Gerbe 1879). Based on SM genetic non-invasive sampling in 51 olive groves and surrounding habitats, we identified seven rodent species and one insectivore. Occupancy modelling indicated that SM were generally less detected within olive groves than in surrounding habitats. The vulnerable M. cabrerae reached a mean occupancy (95% CI) of 0.77 (0.61–0.87), while M. lusitanicus stood at 0.37 (0.24–0.52). M. cabrerae was more likely to occur in land mosaics with high density of agricultural field edges, while M. lusitanicus was more associated with high density of pastureland patches. Overall, our study suggests that the complex structure and spatial heterogeneity of traditionally managed olive grove agro-ecosystems may favor the occurrence of species-rich SM communities, possibly including well-established populations of species of conservation importance, while keeping potential pest species at relatively low occupancy rates.

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