Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"crop load"”.
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Inhibition of Flower Bud Initiation and Development in Apple by Defoliation, Gibberellic Acid and Crop Load Manipulation
… biennial flower profusely and carry a heavy crop in the "on" year, and flower sparsely or not at all and carry little or no crop the following year, the "off" year. Fruit in the "on" year tend to be small, poorly colored, and of low quality, while the few fruit in the "off" year are usually …
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Sensor based determination of the fruit bearing capacity in Malus x domestica (Borkh.) aimed at precise crop load management
… throughout the whole orchard. For this purpose, crop load management practices in apples intend to reduce the number of fruit per tree in order to (i) optimise the carbon supply to demand balance and the (ii) fruit quality in the current season, and (iii) ensure flower bud formation for the …
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Evaluation of rootstock and crop load effects on the performance of `Gibson Golden Delicious' and three scab-resistant apple cultivars
… establish an orchard and mechanization of grain crops, many farmers changed to corn and soybeans that are less vulnerable to low temperature injury. However, current changing economic conditions and food sourcing policies are prompting farmers to consider crop diversification including apple …
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Pollen Tube Growth Characteristics of Selected Crabapple Cultivars and Managing Apple (Malus x domestica) Crop Load and Early Season Diseases with Organic Bloom Thinning Chemicals
Reducing apple (Malus x domestica Borkh.) crop load during bloom is a reliable option for increasing fruit quality and return bloom. In this thesis, multiple approaches to improving bloom thinning practices are discussed. The first project analyzed the pollen tube growth of several crabapple …
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The Effects of Cluster Thinning on Vine Performance, Fruit, and Wine Composition of Pinot Noir (Clone 115) in the Edna Valley of California
… the vines tested were at or below a balanced crop load prior to the application of cluster thinning. Edna Valley AVA could likely support higher crop loads than 3.2 on the Ravaz index without negatively impacting fruit or wine composition and reducing crop load below that level is unlikely to …
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Caracterización geométrica, ecofisiológica y evaluación agronómica de sistemas continuos de vegetación libre (SPRAWL) vs. espaldera para atenuar la sobreexposición de hojas de racimos en cv. syrah (Vitis vinifera L.) en viñedos de zonas cálidas
… comparing different trellis system and different crop loads. The experimental trial has been developed for three years (2005, 2006 y 2007) in an experimental fields in Toledo (Castilla La Mancha), in a fine clay-sand soil and Mediterranean dry and warn climate. The cultivar is Syrah grafted on …
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Effect of Training Systems on Viognier (Vitis vinifera L.) Grape and Wine Glycosides and Volatile Compounds
… not observed. VSP-trained vines had the lowest crop load and lowest light levels in the fruit zone. Seventeen volatile compounds were analyzed using headspace solid-phase microextraction, GC-MS. Fruit showed differences in linalool, á-terpineol, â-damascenone, and n-hexanol concentrations …
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Robotics Application in Precision Spraying
… topic of this thesis introduces the Adaptive Crop Load Estimation (ACLE) method, a deep learning-based grape counting approach designed to alleviate the need for extensive annotated datasets. By training the model on a limited set of images, this method demonstrates promising results in …
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Evaluating Application Timing Strategies, Suitability, and Efficacy of Apple Blossom Thinning Chemicals for Commercial Use
… open bloom and 48 hours after reduced fruit set, crop load, and improved fruit weight. In the second study, a 'Honeycrisp'/'B.9' and 'Cripps Pink'/'M.9' apple block in Virginia were used in 2018 and 2019 to evaluate multiple chemical agents with and without stylet-oil. Most of the treatments …
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Vineyard soil matters: exploring the influence of soil physical and chemical properties on Eastern U.S. grape production
… than other explanatory variables including crop load and sunlight exposure of fruit. Overall, this research increased our understanding of the soil properties that influence vine growth and fruit chemistry in the Eastern US. The results will help growers improve sampling methods, fruit …
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ANATOMICAL AND PHYSIOLOGICAL ASPECTS OF A HOST-PATHOGEN INTERACTION: CYTOSPORA CANKER ON PRUNUS PERSICA (L) BATSCH
… wounded in mid-June developed a suberized necrophylactic periderm (NP) within two weeks. Both diffuse and delimited wound responses were observed. Normal xylem and phloem production was replaced by parenchymatous tissue in samples exhibiting a diffuse wound response. Within four weeks, NP …
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Studies in Blackberry: Development and Implementation of a Phenotyping Protocol for Blackberry Seedling Populations and Impact of Time of Day of Harvest on Red Drupelet Reversion for University of Arkansas Blackberry Genotypes
… Agricultural Research Service Horticultural Crops Research Unit (USDA-ARS HCRU) based in Corvallis, OR. The germplasm and breeding objectives of these two breeding programs are diverse, but frequent collaboration necessitated a standardized method of characterizing plant and fruit traits. A …
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Root restriction, under-trellis cover cropping, and rootstock modify vine size and berry composition of Cabernet Sauvignon
… no root manipulation (NRM); under-trellis cover crop (CC) or herbicide strip (HERB); and one of three rootstocks: 101-14, Riparia Gloire, or 420-A. Effects of these treatments were measured in two experiments: Experiment I compared combinations of all three treatments, while Experiment II …
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Vines of different capacity and water status alter the sensory perception of Cabernet Sauvignon wines
… block. Treatment levels were under-trellis cover crop (CC) compared to under-trellis herbicide (Herb); root restriction bags (RBG) compared to no root manipulation (NRM); three compared rootstocks (101-14, 420-A, riparia Gloire); low water stress (LOW) compared to high water stress (HIGH). Vines …