Effects of Long-Term Nitrogen, Phosphorus, and Potassium Fertilization on Chenin blanc Vines. II. Leaf Analyses and Grape Composition

Conradie, W. J.; Saayman, D.

doi:10.5344/ajev.1989.40.2.91

Cited by 37 publications

(7 citation statements)

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“…3A). Similar results were reported by Conradie et al (2002) for Sauvignon blanc grapes in the Coastal region where lower acidity and higher pH was observed for grapevines planted in a Glenrosa soil as a result of water stress. The TTA measured during the 2017/18 season followed similar trends to the mean TTA of the previous four seasons (Fig.…”

Section: Juice Characteristicssupporting

confidence: 89%

“…Similar results were reported for irrigated and non-irrigated Cabernet Sauvignon grapevines in the Swartland region (Mehmel, 2010). In the Coastal region, cane mass for Sauvignon blanc grapevines in soil with higher SWC was higher when compared to grapevines in drier soil in the same vineyard (Conradie et al, 2002).…”

Section: Cane Massmentioning

confidence: 87%

“…8B-C; Table 8). The lower TTA measured at the RF treatment plots may be a result of increased sunlight penetration in the less dense bunch zone which lead to more berry exposure and reduced TTA (Iland, 1989;Conradie et al, 2002). The increase in TTA with increased water application can also be related to less water constraints experienced by the grapevines at the SLD and DLD plots during the ripening period (Fig.…”

Section: Juice Characteristicsmentioning

confidence: 99%

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Effect of Irrigation with Treated Municipal Wastewater on Vitis vinifera L. cvs. Cabernet Sauvignon and Sauvignon blanc in Commercial Vineyards in the Coastal Region of South Africa - Vegetative Growth, Yield and Juice Characteristics

Hoogendijk,

Myburgh,

Howell

et al. 2023

SAJEV

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A long-term trial was conducted in commercial vineyards in the Coastal region of South Africa to assess the impact of treated municipal wastewater irrigation on vineyards. Cabernet Sauvignon and Sauvignon blanc grapevines were irrigated using treated municipal wastewater from the Potsdam wastewater treatment works for 11 years. Grapevines were either rainfed (RF), irrigated with treated municipal wastewater via a single dripper line (SLD) or received twice the volume of wastewater via a double dripper line (DLD). Grapevine responses were measured from the 2013/14 to 2017/18 seasons. Although high amounts of K+, Na+ and Cl- were applied via wastewater irrigation, it did not result in excessive uptake by plants and did not affect vegetative growth or yield negatively. Irrigation reduced water constraints throughout the growing season compared to RF conditions, particularly for Cabernet Sauvignon. Consequently, SLD and DLD grapevines produced stronger vegetative growth and higher yields compared to RF. Results showed that the availability of irrigation water (albeit of relatively low quality) in regions where grapevines are usually grown under dryland conditions can increase grapevine productivity whilst maintaining good fruit quality. However, the water can vary in its availability as well as its quality over a short period of time. Plant and soil water status should be monitored regularly to avoid over-irrigation. Implementing low frequency irrigation scheduling with a sufficient leaching fraction will allow adequate time between irrigation applications for soils to aerate and organic material to decompose. Irrigation water, soils and grapevine leaves should be analysed to ensure that chemical parameters conform to recommended thresholds and norms.

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Section: Juice Characteristicssupporting

confidence: 89%

Section: Cane Massmentioning

confidence: 87%

Section: Juice Characteristicsmentioning

confidence: 99%

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Effect of Irrigation with Treated Municipal Wastewater on Vitis vinifera L. cvs. Cabernet Sauvignon and Sauvignon blanc in Commercial Vineyards in the Coastal Region of South Africa - Vegetative Growth, Yield and Juice Characteristics

Hoogendijk,

Myburgh,

Howell

et al. 2023

SAJEV

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“…However, other studies such as Rubio et al (2013) and Gaiotti et al (2017) showed a positive effect on grape yield one and five years after compost application, respectively. Longterm vineyard trials by Conradie and Saayman (1989) and Morlat (2008) both suggested that the low grapevine demand on mineral N at 30-40 kg N ha -1 can be the reason for the minimal yield response to compost application. The N supply from all compost treatments in our study ranged between 67.5 and 216 kg N ha -1 in the two applications.…”

Section: Effects Of Increasing Compost Application Rate On Cover Crop...mentioning

confidence: 99%

“…The N supply from all compost treatments in our study ranged between 67.5 and 216 kg N ha -1 in the two applications. While only about 10% of this N is expected to be mineralized and become plant available in the first year after compost application, the inherent soil N mineralization alone could be a sufficient supply to the vines in the growing season (Conradie and Saayman, 1989). It was possible that in both years the vines had met their production capacity with the N supply by the soil and through fertigation, and other external factors such as vine health, age, and climate might play a significant role in the year-to-year variability in yield during the whole experiment.…”

Section: Effects Of Increasing Compost Application Rate On Cover Crop...mentioning

confidence: 99%

Short-term effects of increasing compost application rates on soil C and greenhouse gas (N2O and CO2) emissions in a California central coast vineyard

Wong

Falcone

Rich

et al. 2023

Front. Environ. Sci.

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Compost application is commonly considered by winegrape producers to improve soil health while sequestering carbon (C) and mitigating climate change. However, inputs of available C and nitrogen (N) as nutrients can induce emissions of greenhouse gases (GHG) such as carbon dioxide (CO2) and nitrous oxide (N2O). A 2-year field experiment in a Mediterranean vineyard on the California Central Coast was conducted to investigate the short-term effects of compost application at four different rates on soil C dynamics and greenhouse gas emissions. Two years of greenhouse gas sampling were performed using static chambers at vineyard management events in two functional locations (tractor row and under the vines). Soil samples were collected annually in spring at the same locations at 0–15, 15–30 and 30–60 cm depth, and during greenhouse gas sampling at 0–15 cm. The increasing compost application rate did not increase soil C stock, cumulative greenhouse gas emissions and global warming potential. The increase in active soil C observed to the depth of 60 cm suggests that increasing the compost application rate up to the rate of 13.5 Mg ha-1 year-1 can facilitate the early stages of C stabilization and sequestration. Compost application did not have a significant effect on grape yield or cover crop growth during the study. Our results provided important information on the potential environmental tradeoffs as greenhouse gas emissions from compost applications, which should be taken into account when considering the vineyard C budget.

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2015

The Science of Grapevines

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Effects of Long-Term Nitrogen, Phosphorus, and Potassium Fertilization on Chenin blanc Vines. II. Leaf Analyses and Grape Composition

Cited by 37 publications

References 0 publications

Effect of Irrigation with Treated Municipal Wastewater on Vitis vinifera L. cvs. Cabernet Sauvignon and Sauvignon blanc in Commercial Vineyards in the Coastal Region of South Africa - Vegetative Growth, Yield and Juice Characteristics

Effect of Irrigation with Treated Municipal Wastewater on Vitis vinifera L. cvs. Cabernet Sauvignon and Sauvignon blanc in Commercial Vineyards in the Coastal Region of South Africa - Vegetative Growth, Yield and Juice Characteristics

Short-term effects of increasing compost application rates on soil C and greenhouse gas (N2O and CO2) emissions in a California central coast vineyard

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