Tuber Quality Parameters of Potato Varieties Depend on Potassium Fertilizer Rate and Source

Manolov, I.; Neshev, N.; Chalova, Vesela I.

doi:10.1016/j.aaspro.2016.09.010

Cited by 19 publications

(11 citation statements)

References 8 publications

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“…Reasons for different dry matter percentages between SOP and PH but similar starch contents at 186 and 249 kg • ha -1 K 2 O rates were not clear. Manolov et al (2016) reported higher starch content from SOP compared with MOP with equal rates of K in both greenhouse pot experiments and field studies. There was no effect of K application rate on hardness or crunchiness but PH had higher hardness, 15.8 N compared with a range of 13.5-14.4 N, and crunchiness (1.42 compared with 1.2 N/mm) for the other fertilizer sources and control (Table 4).…”

Section: Resultsmentioning

confidence: 91%

“…The influence of source and rate of K fertilizer on tuber dry matter content has been widely investigated (Maier et al, 1986;Panique et al, 1997;Ramona and Tomasiewicz, 2012). Kumar et al (2007b), andManolov et al (2016) reported enhanced dry matter percentage by the application of SOP compared with MOP. Potassium influence on dry matter percentage is complex and dynamic.…”

Section: Resultsmentioning

confidence: 99%

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Potato Response to Polyhalite as a Potassium Source Fertilizer in Brazil: Yield and Quality

Mello

Pierce

Tonhati

et al. 2018

horts

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Polyhalite (PH) is a hydrated sulfate evaporite mineral containing potassium, calcium, magnesium, and sulfur, nutrients all required in significant quantities by crops, but has limited evaluation as a fertilizer for potato (Solanum tuberosum L.). Fertilizer source and application rate field trials were conducted to evaluate PH as a fertilizer for potato production in the weathered tropical soils in Brazil. We selected two locations in the potato producing region of Southeast Brazil in 2015–16, one trial was conducted during the wet season at Tapira in São Paulo and the other during the winter season at Casa Branca in Minas Gerais. A common blend, 4–14–8, was made with either muriate of potash (MOP), sulfate of potash (SOP), or PH as the K source; with kieserite and gypsum added to the SOP to make a synthetic PH with similar composition; P either as single super phosphate (SSP) for the MOP blend or mono ammonium phosphate (MAP) for the PH and SOP blends; and N as urea adjusted for the N in MAP. All blends were applied at four application rates of 62, 125, 187, and 249 kg K/ha. A control was also included consisting of N and P as urea and MAP but no K, Ca, Mg, or S. Total and marketable yields as well as potato quality including dry matter, starch, soluble solids, hardness, and crunchiness were measured at harvest using standard techniques. At Tapira, potato yields increased linearly with increasing K application rate from 22.4 t·ha−1 for the control to the highest yield of 29.2 t·ha−1 and were higher for PH and SOP than MOP (28.8, 29.2, and 25.3 t·ha−1, respectively). At Casa Branca, yields increased from 31.5 t·ha−1 for the control to 42.4 kg·ha−1 at the 62 kg K/ha application rate with no further increases at higher rates and no differences among fertilizer blends at any application rate. Polyhalite blend increased dry matter and starch at the higher application rates compared with MOP and SOP at Tapira and increased potato hardness and crunchiness at the optimum 62 kg K/ha application rate at Casa Branca. Yield response was similar for PH and SOP but quality differences between these two fertilizer blends were observed even though they were similar in composition. Differences between PH and MOP may be related either to Cl or lack of Mg in the MOP blend. PH performed well as a fertilizer for potatoes as it produced equal or higher yields and provided benefits to potato quality when compared with MOP or SOP as a K source in a common fertilizer blend.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Potato Response to Polyhalite as a Potassium Source Fertilizer in Brazil: Yield and Quality

Mello

Pierce

Tonhati

et al. 2018

horts

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“…However, the positive effects of the sulphate component on, e.g., DM depend on the studied cultivars. Increased DM and starch content due to fertilisation with K 2 SO 4 were also observed by Kumar et al (2004) applying 124.5 kg K 2 O as K 2 SO 4 and Manolov et al (2016) fertilising with 100 and 200 kg K 2 O as K 2 SO 4 , respectively. Adverse effects on the observed parameters are mostly attributed to chloride ions in the soil solution ( Torabian et al, 2021 ).…”

Section: Introductionmentioning

confidence: 72%

Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

2022

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Potatoes are an important staple food with high yield potential and great nutritional value. Potassium (K) fertilisation can increase both tuber yield and quality, but its effects differ depending on the K fertilisation form. Potatoes are known to be chloride sensitive, since chloride ions can influence, for example, the starch content. Therefore, fertilisations shortly before planting using potassium sulphate (K2SO4) are often recommended instead of potassium chloride (KCl). However, the use of different fertilisation forms is contradictory, and the chloride sensitivity of potatoes remains unclear. To examine this issue in more detail, a 2-year field experiment using two cultivars, “Laura” and “Marabel,” was conducted. K fertilisation with 240 kg K2O as K2SO4 and KCl was applied, and the control remained unfertilised. Quality traits, including internal and external parameters, were analysed after harvest and after 5 months of storage at 6°C. The results revealed minor effects on yield, but the starch content and ascorbic acid concentration were reduced due to the KCl supply. Furthermore, the reducing sugar concentration in tubers increased during storage more after KCl compared to K2SO4 fertilisation. Moreover, volatile compounds were affected by the K fertilisation form, with higher levels of lipid-derived off-flavour compounds after KCl application. However, the effects of cultivation year, cultivar, and storage interacted with the influence of the fertilisation form. In summary, KCl fertilisation can disadvantageously influence several quality traits, but the use of potato cultivars should also be considered when recommending fertilisers.

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“…This difference is largely due to the presence of chloride ions in the soil solution [81]. Manolov et al [82], in both greenhouse pot experiments and field studies, reported that starch content was higher following K 2 SO 4 treatment, compared to KCl when equal rates of K were applied. However, Khan et al [24] indicated that starch content was unaffected by KCl application.…”

Section: Effects Of K Ratementioning

confidence: 99%

Potassium: A Vital Macronutrient in Potato Production—A Review

et al. 2021

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Potassium (K) is a primary macronutrient for overall plant growth, yield potential, product quality and stress resistance of crops. Potato (Solanum tuberosum L.) crops require a high amount of potassium to achieve the ideal yield and quality. Therefore, the determination of optimum K rate and efficient source for potato is necessary because K affects crop physiological processes, dry matter production, cooking, and processing requirements. Through modeling on the pooled data extracted from 62 studies, the highest tuber yields might be obtained at an exchangeable soil K level of 200 mg kg−1 approximately, dependent on soil pH, texture, and organic matter. Through modeling on the data of 48 studies, it also revealed that application of potassium sulfate (K2SO4) and potassium chloride (KCl) at rates of 200 kg ha−1 and potassium nitrate (KNO3) at a rate of 100 kg ha−1 might achieve the ideal yield, implying the importance of K sources in potato production. However, these values (either soil exchangeable K content, or fertilizer rates) might not be applicable in a specific growing environment for a specific potato variety. It seems that there is no discrimination among split, pre-plant or in-season application of K, although pre-plant fertilization might be a trustworthy strategy for economic tuber yield. Owing to the luxury consumption of K by potato crop, a combination of factors, including soil exchangeable K level, petiole K concentration, crop removal amount, soil conditions, management practices, climatic conditions, and potato variety, should be considered in order to make rational K fertilizer recommendations.

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Tuber Quality Parameters of Potato Varieties Depend on Potassium Fertilizer Rate and Source

Cited by 19 publications

References 8 publications

Potato Response to Polyhalite as a Potassium Source Fertilizer in Brazil: Yield and Quality

Potato Response to Polyhalite as a Potassium Source Fertilizer in Brazil: Yield and Quality

Comparison of the Effects of Potassium Sulphate and Potassium Chloride Fertilisation on Quality Parameters, Including Volatile Compounds, of Potato Tubers After Harvest and Storage

Potassium: A Vital Macronutrient in Potato Production—A Review

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