Seasonal Phosphorus Dynamics in a Volcanic Soil of Northern California

Wilson, Stewart G.; Lambert, Jean; Dahlgren, Randy A.

doi:10.2136/sssaj2016.02.0028

Cited by 8 publications

(18 citation statements)

References 49 publications

(85 reference statements)

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“…The least responsive vines to two P treatments were the Chardonnay vines growing on the Musick soil ( Figure 3) which has low Ca levels (Table 1) and the reddest color and therefore the most oxidized Fe content (Schwertmann, 1993). Thus, our results are consistent with the implications of Wilson et al (2016), and they precipitated significantly different composition, appearance, and flavor of the subsequent wines.…”

Section: Discussionsupporting

confidence: 78%

“…The results also showed differences in vine P status following soil amendment application were dependent on existing vineyard soil conditions. A recent study of P dynamics in volcanic soils of northern California established that soil parent materials have a significant effect on maintaining adequate P levels in the soil solution after P additions from different source materials (Wilson et al, 2016). Soils derived from low Fe parent materials such as rhyolite had less adsorption and occlusion of added P, and thus P availability remained high following P additions.…”

Section: Discussionmentioning

confidence: 99%

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Sensory attributes of wines made from vines of differing phosphorus status

Skinner¹,

Ishii

O’Mahony

et al. 2019

OENO One

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Aim: The implications of water and nutrient deficiencies for photosynthesis, dry matter production, and yield have been well documented. However, whereas multiple studies show that water deficits affect grape and wine quality as well as wine sensory characteristics, the corresponding implications of manipulating vine nutrient status through fertilizer additions remain largely unexplored.Methods and results: In this study, phosphorus (P) fertilizers were applied to P-deficient vineyards of Cabernet Sauvignon, Chardonnay, and Chenin blanc growing in rhyolite, granite, and schist derived soils. Bloomtime leaf lamina P levels, basic soil chemical characteristics, juice P, and wine chemical parameters were measured after harvest. A highly sensitive protocol for sensory evaluation was used to test the wines made from the treated and untreated grapes for differences in wine appearance, flavor, aroma, and taste. All P additions were effective in rapidly increasing both vine P status and P in the harvested juice. In Cabernet Sauvignon vines growing on rhyolite, juice P was linearly related to vine P status compared to a non-linear accumulation of juice P in Chenin blanc vines growing on an calcium-rich schist soil. Soil CEC and Ca levels were both higher in the schist derived soil than in the rhyolite or granite soils, indicating a possible association of P release with soil parent material. Differences were detected in appearance, flavor, aroma, and taste in wines made from all three varieties on all three sites. Also, increasing vine P status increased the concentration of anthocyanins and soluble phenolics in the wines, and reduced fermentation time in the Cabernet Sauvignon.Conclusions: The results of this study show that vine P nutrient status can be manipulated by the grower across different soil types. Vine nutrient status has also been shown to significantly affect vine bud fertility, photosynthesis, dry matter and fruit production, and grape and wine chemical parameters. However, there is a lack of data describing the effect of manipulating vine nutrient status through fertilizer additions on the resulting wine sensory profile. Our results show that vine P status can influence the sensory attributes of wines.Significance and impact of the study: The results of this study and earlier work with vine water status identify two vineyard sources of variation in wine sensory attributes that occur both naturally and can be manipulated by the grower across different soil types.

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Sensory attributes of wines made from vines of differing phosphorus status

Skinner¹,

Ishii

O’Mahony

et al. 2019

OENO One

View full text Add to dashboard Cite

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“…The longer the continued application, the stronger the treatment effect with time (Morlat and Chaussod, 2008). Soil C is the basis of the soil food web and increases in SOC from compost addition typically increases the size of the microbial biomass (Bustamante et al, 2011;Rubio et al, 2013;Wilson et al, 2016), although not always (Gaiotti et al, 2017). Increases in SOM lead to increases in total N, absolute amounts of organic N as well as inorganic N from mineralization (Larchevêque et al, 2006;Morlat and Chaussod, 2008;Calleja-Cervantes et al, 2015a;Gaiotti et al, 2017).…”

Section: Compost Use and Management For Improved Vineyard Soil Healthmentioning

confidence: 99%

“…Increases in SOM lead to increases in total N, absolute amounts of organic N as well as inorganic N from mineralization (Larchevêque et al, 2006;Morlat and Chaussod, 2008;Calleja-Cervantes et al, 2015a;Gaiotti et al, 2017). Additions of compost derived C can influence P dynamics through competitive inhibition of P sorption sites by organic acid anions, as well as providing a source of mineral and organic P (Hue, 1992;Korboulewsky et al, 2002;Hunt et al, 2007;Wilson et al, 2016). Increases in SOC lead to better soil aggregation, infiltration and water holding capacity and reduced bulk density (Celik et al, 2004;Morlat and Chaussod, 2008;Brown and Cotton, 2011;Salomé et al, 2016;Ramos, 2017).…”

Section: Compost Use and Management For Improved Vineyard Soil Healthmentioning

confidence: 99%

“…Addition of composts routinely increases soil microbial biomass carbon (MBC) and respiration as measured by CO 2 evolution (Bustamante et al, 2011;Rubio et al, 2013;Wilson et al, 2016;Gaiotti et al, 2017). An increase in the size and activity of the microbial biomass can have beneficial effects to nutrient cycling, especially in degraded soils (Ros, 2003;Lazcano et al, 2013).…”

Section: Compost Use and Management For Improved Vineyard Soil Healthmentioning

confidence: 99%

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Defining and Managing for Healthy Vineyard Soils, Intersections With the Concept of Terroir

Lazcano

Decock

Wilson

2020

Front. Environ. Sci.

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The use of sustainable soil management practices is becoming common in wine growing regions around the world in response to an increased awareness of the value of soil health to maintain environmental quality, crop yield, and grape quality. In spite of this, little information is available on the meaning of soil health within a viticultural context, the effects of soil management practices on soil health and the consequences for grape quality and the expression of the terroir. In this review we discuss interrelated dynamic physical, chemical, and biological properties associated with soil health and how they could be important in the expression of the terroir. We focus on the use of cover crops and compost application, two practices commonly used in vineyard soils, and how they affect these physical, chemical and biological aspects of soil health, grape quality and the expression of the terroir. Finally, we discuss research gaps, and best management practices to reduce possible tradeoffs associated with these practices such as the emission of greenhouse gasses.

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Mapping phosphorus sorption and availability in California vineyard soils using an ensemble of machine learning models

Wilson

Steenwerth²,

Debons

2022

Soil Science Soc of Amer J

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Spatial variability of soil P is tied to pedogenic state factors and management practices in cultivated soils. The distribution of P availability and sorption was predictively mapped in the Napa and Lodi American Viticulture Areas in California.We tested three machine learning algorithms, Random Forest (RF), Extreme Gradient Boosting (XGB), and Cubist, as well as two super learner ensembles of base models, model stacking and model averaging. Pedons (n = 141) were analyzed for Olsen P and phosphorus-sorption index (PSI), aggregated by depth weighted average (0-30 cm and 30-100 cm) and intersected with rasters of environmental predictors to model Olsen P and PSI. Base models (RF, XGB, and Cubist) performed well for PSI prediction (R 2 = .68-.73), but less well for Olsen P (R 2 = .46-.56). For ensembles, model averaging was selected for PSI at 0-30 cm (R 2 = .77) and model stacking was selected for PSI at 30-100 cm (R 2 = .74). For Olsen P, model averaging was selected for 0-30 cm (R 2 = .42), and model stacking for 30-100 cm (R 2 = .52). Predictions (30-m) highlight regional trends in P-sorption capacity and Olsen P reflective of differences in pedogenic controls on P dynamics. Predictions were strong for PSI, and less robust for Olsen P. Fe/Al-(hydr)oxides control P sorption in weathered soils, whereas management influences Olsen P. Because the spatial variability of Fe/Al-(hydr)oxides is tied to pedogenic state factors, P-sorption capacity lends itself to environmental correlation mapping owing to the pedological underpinnings of digital soil mapping. INTRODUCTIONPhosphorus (P) is an essential plant nutrient and the mineral source of P mined for fertilizers is a non-renewable resource.

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Seasonal Phosphorus Dynamics in a Volcanic Soil of Northern California

Cited by 8 publications

References 49 publications

Sensory attributes of wines made from vines of differing phosphorus status

Sensory attributes of wines made from vines of differing phosphorus status

Defining and Managing for Healthy Vineyard Soils, Intersections With the Concept of Terroir

Mapping phosphorus sorption and availability in California vineyard soils using an ensemble of machine learning models

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