2017
DOI: 10.4067/s0718-95162017000300002
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Contribution of mineral N to young grapevine in the presence or absence of cover crops

Abstract: The presence of cover crops in vineyards may decrease the availability of nitrogen (N) derived from fertilizer to grapevines. The present study aimed to evaluate the recovery of urea-15 N and growth of young grapevines with and without natural vegetation in plant rows. The study was conducted in southern Brazil on one-year-old Chardonnay grapevines grown in soils with and without cover crops. The grapevines were subjected to the application of 40 kg N ha -1 in the form of urea-15 N at 3% 15 N atom excess. Dry … Show more

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Cited by 9 publications
(6 citation statements)
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“…There is much less evidence on the effect of grass cover crops on recently established vineyards, though under some conditions it can promote vine growth at the beginning of the season, probably due to the presence of organic compounds in the cover crop rhizosphere. Nevertheless, at the end of the cycle, the effect becomes negative because of the high degree of competition for nutrients and water (Brunetto et al, 2017).…”
Section: Other Elementsmentioning
confidence: 99%
“…There is much less evidence on the effect of grass cover crops on recently established vineyards, though under some conditions it can promote vine growth at the beginning of the season, probably due to the presence of organic compounds in the cover crop rhizosphere. Nevertheless, at the end of the cycle, the effect becomes negative because of the high degree of competition for nutrients and water (Brunetto et al, 2017).…”
Section: Other Elementsmentioning
confidence: 99%
“…and ryegrass (Lolium multiflorum L.), are used in the interrow space of orchards to dissipate the kinetic energy of rainfall and reduce soil erosion. Throughout tree development, cover crop shoots are frequently cut and deposited on the soil surface contributing to increasing soil organic matter (SOM) content and nutrient cycling (Brunetto et al 2017;.…”
Section: Introductionmentioning
confidence: 99%
“…Model ML2 predicted no need of N fertilization at high-yield level in 2017, and this finding indicates carryover effects and sufficient nutrient and carbohydrate storage. Fruit trees are very sensitive to shortage of carbohydrates and other resources [54], but they can store nutrients in their tissues over the years and show little response to added nutrients in the following season [77][78][79][80][81][82][83][84]. Nitrogen (N) reserves can be stored in roots, stems and branches (older than 1 year) [19,23].…”
Section: Fruit Yieldmentioning
confidence: 99%
“…Stored N can be redistributed by phloem flow [27], and this phenomenon is commonly observed in temperate fruit trees [66,79]. Soil organic matter and its prior fertilization can also supply nitrogen through the mineralization of organic N, roots and leftover residues [27,82,83].…”
Section: Fruit Yieldmentioning
confidence: 99%