Matthew W. Fidelibus
YOU?
Author Swipe
View article: Effects of preharvest abscission agent application on postharvest quality of destemmed Autumn King and Sheegene-12 table grape berries
Effects of preharvest abscission agent application on postharvest quality of destemmed Autumn King and Sheegene-12 table grape berries Open
Table grapes have high production costs partly due to laborious picking and packing practices. Mechanized harvest is not yet feasible for whole table grape clusters, but it might be suitable for “fresh cut” (destemmed) table grapes if mech…
View article: Nitrogen retrieval in grapevine (Vitis vinifera L.) leaves by hyperspectral sensing
Nitrogen retrieval in grapevine (Vitis vinifera L.) leaves by hyperspectral sensing Open
Nitrogen (N) is a critical macronutrient that directly affects grapevine yield and quality but is also highly mobile in soil and can cause environmental contamination when over-applied. Monitoring leaf N content is useful for assessing vin…
View article: Mechanical Fruit-Zone Leaf Removal and Deficit Irrigation Practices Interact to Affect Yield and Fruit Quality of Cabernet Sauvignon Grown in a Hot Climate
Mechanical Fruit-Zone Leaf Removal and Deficit Irrigation Practices Interact to Affect Yield and Fruit Quality of Cabernet Sauvignon Grown in a Hot Climate Open
Background and goals The hot climate in the San Joaquin Valley (SJV) makes it difficult to achieve the optimal berry color for Cabernet Sauvignon (Vitis vinifera L.), and manual cultural practices are cost prohibitive because of low price …
View article: Nitrogen fate during agricultural managed aquifer recharge: Linking plant response, hydrologic, and geochemical processes
Nitrogen fate during agricultural managed aquifer recharge: Linking plant response, hydrologic, and geochemical processes Open
Agricultural managed aquifer recharge (Ag-MAR, on-farm recharge), where farmland is flooded with excess surface water to intentionally recharge groundwater, has received increasing attention by policy makers and researchers in recent years…
View article: Crop coefficients (Kc) developed from canopy shaded area in California vineyards
Crop coefficients (Kc) developed from canopy shaded area in California vineyards Open
Seasonal grapevine crop coefficients (K c ) were estimated from the shaded area (SA) beneath grapevine canopies at solar noon in vineyards with different trellises and row spacings. The trellises included the vertical shoot positioning (VS…
View article: Jasmonic Acid Activates the Fruit-Pedicel Abscission Zone of ‘Thompson Seedless’ Grapes, Especially with Co-Application of 1-Aminocyclopropane-1-carboxylic Acid
Jasmonic Acid Activates the Fruit-Pedicel Abscission Zone of ‘Thompson Seedless’ Grapes, Especially with Co-Application of 1-Aminocyclopropane-1-carboxylic Acid Open
Two studies were conducted to determine how methyl jasmonate (MeJA), jasmonic acid (JA), and 1-aminocyclopropane-1-carboxylic acid (ACC) affect grape berry abscission in the initial days after treatment. The overarching goal was to determi…
View article: Grapevine Variety and Number of Canes Affect Dry-on-Vine (DOV) Raisin Production on an Overhead Arbor Trellis
Grapevine Variety and Number of Canes Affect Dry-on-Vine (DOV) Raisin Production on an Overhead Arbor Trellis Open
Making raisins (dried grapes) is a laborious process and grape growers around the world are increasingly interested in adopting mechanized methods, especially dry-on-vine (DOV). The DOV method entails severing canes bearing mature fruit, c…
View article: Precipitation before Flowering Determined Effectiveness of Leaf Removal Timing and Irrigation on Wine Composition of Merlot Grapevine
Precipitation before Flowering Determined Effectiveness of Leaf Removal Timing and Irrigation on Wine Composition of Merlot Grapevine Open
Grapevine productivity, and berry and wine flavonoid concentration, depend on the interactions of cultivar, environment, and applied cultural practices. We characterized the effects that mechanical leaf removal and irrigation treatments ha…
View article: Mechanization of Pruning, Canopy Management, and Harvest in Winegrape Vineyards
Mechanization of Pruning, Canopy Management, and Harvest in Winegrape Vineyards Open
Summary Aim: In winegrape production, pruning, canopy management, and harvest are essential practices that are increasingly being done by machines. How well these practices are executed can substantially affect fruit yield and quality. Mec…
View article: A Novel Machine Learning Approach to Estimate Grapevine Leaf Nitrogen Concentration Using Aerial Multispectral Imagery
A Novel Machine Learning Approach to Estimate Grapevine Leaf Nitrogen Concentration Using Aerial Multispectral Imagery Open
Assessment of the nitrogen status of grapevines with high spatial, temporal resolution offers benefits in fertilizer use efficiency, crop yield and quality, and vineyard uniformity. The primary objective of this study was to develop a robu…
View article: Exogenous Abscisic Acid Promotes Anthocyanin Biosynthesis and Increased Expression of Flavonoid Synthesis Genes in Vitis vinifera × Vitis labrusca Table Grapes in a Subtropical Region
Exogenous Abscisic Acid Promotes Anthocyanin Biosynthesis and Increased Expression of Flavonoid Synthesis Genes in Vitis vinifera × Vitis labrusca Table Grapes in a Subtropical Region Open
Hybrid (Vitis vinifera ×Vitis labrusca) table grape cultivars grown in the subtropics often fail to accumulate sufficient anthocyanins to achieve good uniform berry color. Growers of V. vinifera table grapes in temperate regions generally …
View article: Ethephon As a Potential Abscission Agent for Table Grapes: Effects on Pre-Harvest Abscission, Fruit Quality, and Residue
Ethephon As a Potential Abscission Agent for Table Grapes: Effects on Pre-Harvest Abscission, Fruit Quality, and Residue Open
Some plant growth regulators, including ethephon, can stimulate abscission of mature grape berries. The stimulation of grape berry abscission reduces fruit detachment force (FDF) and promotes the development of a dry stem scar, both of whi…
View article: Late-season Plastic Canopy Covers Affect Canopy Microclimate and Fruit Quality of ‘Autumn King’ and ‘Redglobe’ Table Grapes
Late-season Plastic Canopy Covers Affect Canopy Microclimate and Fruit Quality of ‘Autumn King’ and ‘Redglobe’ Table Grapes Open
California table grape ( Vitis vinifera ) growers cover the canopies of late-season varieties with plastic (polyethylene) covers to shield the fruit from rain. Green- or white-colored covers are commonly used, but there is lack of informat…