2020
DOI: 10.15361/1984-5529.2020v48n4p325-338
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Mineral nutrition and fertilization of sweet potato

Abstract: Sweet potato (Ipomoea batatas L.) is a versatile crop, but it is often grown in marginal and low-fertility areas, which reflects storage root yields far below its potential. For this reason, balanced liming and fertilization in sweet potato are essential to increase crop yield. Based on this approach, themes related to the nutritional requirements of sweet potato are presented and discussed considering the main cultivars currently used in Brazil as well as references for rational fertilization management in th… Show more

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Cited by 8 publications
(13 citation statements)
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“…Sweetpotatoes take up high amounts of K (Fernandes & Ribeiro, 2020; Fernandes et al., 2020), which is essential for proper nourishment and root yield. In this study, plants grown in soils with low and medium exchangeable K and without K fertilization showed deficient K concentrations in the leaves (<31 g kg −1 ; Lorenzi et al., 1997), which did not occur in soil with initial high exchangeable K, demonstrating that K already available in the soil must be considered in the recommendation of K fertilization for sweetpotatoes.…”
Section: Discussionmentioning
confidence: 99%
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“…Sweetpotatoes take up high amounts of K (Fernandes & Ribeiro, 2020; Fernandes et al., 2020), which is essential for proper nourishment and root yield. In this study, plants grown in soils with low and medium exchangeable K and without K fertilization showed deficient K concentrations in the leaves (<31 g kg −1 ; Lorenzi et al., 1997), which did not occur in soil with initial high exchangeable K, demonstrating that K already available in the soil must be considered in the recommendation of K fertilization for sweetpotatoes.…”
Section: Discussionmentioning
confidence: 99%
“…is the sixth most important food crop in the world, after rice, wheat, potato, maize, and cassava (CIP, 2022). This root crop can be grown in soils with low nutrient availability (Byju & George, 2005; Fernandes & Ribeiro, 2020; Silva et al., 2002; Uwah et al., 2013); however, sweetpotato has high potassium (K) requirements for optimal root production (Gao et al., 2021; Wang et al., 2017). Potassium plays a vital role in sweetpotato storage root yield and quality (El‐Baky et al., 2010; Wang et al., 2017) because it is a constituent of numerous enzymes involved in photosynthesis (Marschner, 2012; Taiz et al., 2017), as well as in the transport of carbohydrates from the leaves to storage roots (Lebot, 2009; Römheld & Kirkby, 2010).…”
Section: Introductionmentioning
confidence: 99%
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“…rotations under no‐tillage system reported 15–35 kg ha −1 yr −1 of N leaching, even in treatments without N fertilization (Rosolem, Castoldi, Pivetta, & Ochsner, 2018). These findings suggest that the 282 mm of rainfall that occurred from planting to hilling in SY 1 may have leached a great portion of starter N applied into the furrow, below seed tuber, once the root system of potato in this period of the cycle was still very shallow (Fernandes & Soratto, 2012; Rosen, Gupta, & Souza, 2020; Zotarelli et al., 2014). In addition, lower solar radiation and temperatures through the potato growing season in SY 1, compared to the other SYs, may have reduced crop evapotranspiration of the crop, and hence compromised its N uptake and growth (Lizana et al., 2020; Schulz et al., 2019; Zotarelli et al., 2014).…”
Section: Discussionmentioning
confidence: 99%