Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization

Saravia, David; Farfán-Vignolo, Evelyn Roxana; Gutiérrez, Raymundo; Mendiburu, Felipe De; Schafleitner, Roland; Bonierbale, Merideth; Khan, Muhammad Awais

doi:10.1007/s12230-016-9505-9

Cited by 51 publications

(37 citation statements)

References 31 publications

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“…Mulching greatly increased potato yield and NUE, which is in agreement with the results from other studies [15][16][17][18]. NUE of potato was less in China than in other countries in the world (160−240 kg tuber yield kg −1 N) [38][39][40][41][42][43][44][45][46][47]. This discrepancy may be associated with differences in the application Without organic fertilization, mulching significantly increased yield and NUE of potato by 25%−26% when P fertilizer was applied at 100−300 kg P 2 O 5 ha −1 and by 21% when P fertilizer was applied at <100 kg P 2 O 5 ha −1 .…”

Section: Discussionsupporting

confidence: 90%

“…Mulching greatly increased potato yield and NUE, which is in agreement with the results from other studies [15][16][17][18]. NUE of potato was less in China than in other countries in the world (160−240 kg tuber yield kg −1 N) [38][39][40][41][42][43][44][45][46][47]. This discrepancy may be associated with differences in the application rate of N, as some studies in other countries have been conducted at a low N rate (i.e., medium N rate, 100−200 kg N ha −1 ) [38][39][40][41][42][43][44][45][46][47].…”

Section: Discussionsupporting

confidence: 90%

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Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

et al. 2019

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In dry environments, potato (Solanum tuberosum L.) is grown under mulching for water conservation and improving tuber yield and nitrogen use efficiency (NUE). A meta-analysis was conducted to determine how mulching improved tuber yield and NUE in potato and how yield and NUE is influenced by fertilization, tillage practices, and growing environment in China. A search of peer-reviewed publications was performed to collect data on the effects of mulching on yield and NUE in potato grown in China. The data included were from field studies with a mulching and a no mulching treatment and data on tuber yield and NUE. A total of 169 publications (17 in English and 152 in Chinese) containing 1802 observations from 105 sites were compiled into the dataset. Mulching significantly increased both tuber yield and NUE by an average of 24% compared to no mulching, respectively. Plastic film mulching was more effective in improving yield and NUE than straw mulching. The yield and NUE increase were highest under plastic film mulching on ridge-furrow plots and straw mulching on flat plots. Mulching was more effective at improving yield and NUE in the Northwest dryland region at a plant density between 55,000 and 70,000 plants ha−1 and with application of synthetic N and P2O5 at rates of 100−200 kg ha−1, K fertilization at 0−100 kg K2O ha−1, and without organic fertilization. Integrated use of organic fertilizer and mulching was found to reduce synthetic N and P fertilizer input by 50% and K fertilizer input by 100% for production without affecting yield and NUE. These results demonstrate that mulching increases yield and NUE in potato in China, but the benefits occur when the growing region, tillage, and fertilization practices are appropriately considered.

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Section: Discussionsupporting

confidence: 90%

“…Mulching greatly increased potato yield and NUE, which is in agreement with the results from other studies [15][16][17][18]. NUE of potato was less in China than in other countries in the world (160−240 kg tuber yield kg −1 N) [38][39][40][41][42][43][44][45][46][47]. This discrepancy may be associated with differences in the application rate of N, as some studies in other countries have been conducted at a low N rate (i.e., medium N rate, 100−200 kg N ha −1 ) [38][39][40][41][42][43][44][45][46][47].…”

Section: Discussionsupporting

confidence: 90%

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

et al. 2019

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“…A shortage of water in the soil solution significantly decreases the coefficient of diffusion for N‐NO 3 . Consequently, the availability of N to a plant undergoes a significant decrease, decreasing N availability from applied fertilizers even to zero (Gonzalez‐Dugo, Durand, & Gastal, 2010; Saravia et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

The in‐season nitrogen concentration in the potato tuber as the yield driver

Grzebisz

Potarzycki

2020

Agronomy Journal

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Potato (Solanum tuberosum L.) tuber sink strength is determined by the maximum nitrogen concentration (N cmax ) in the tuber within the growing season. This hypothesis was verified based on data from two seasons with contrasting weather conditions, that is, the wet 2007 and the dry 2008. A field experiment, including four levels of nutrients: absolute control (AC), NP, NPK, and NPKMgS, was the basis of the hypothesis evaluation. Vines and tubers were collected periodically at 10-11 d intervals in 10, and nine consecutive samplings, respectively. Tuber yield growth was described by the linear and polynomial functions under favorable and unfavorable growth conditions, respectively. The polynomial functions indicated lower tuber yields (+20 t ha-1 for NPK vs. NP in 2007). The N cmax of the growing tuber is the key yield driver, defining the tuber sink capacity. As compared to the in-season variability in N a (N accumulated in vines-source capacity), the N cmax was a conservative trait, up-regulating the source activity. The narrowed N/P from 5.9 to 2.1, but from 4.6 to 1.9 and for N/Mg from 26 to 12, but from 22 to 14, respectively in 2007 and 2008, increased the steepness of the N c during its descending course. The tuber sink capacity can be fulfilled, provided there is a good supply of K during potato bulking. It can be concluded that the higher the N cmax , the higher the potato requirement for K. Any factor lowering the N cmax simultaneously decreases the potato requirement for K, subsequently leading to yield losses.

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“…Therefore, it is necessary to study the relationship between fertilizer ratio and fertilizer use efficiency to determine fertilizer ratio in the future. A moderate amount of nitrogen will promote crops on soil water and nitrogen utilization, increase the biomass and potato yield [50,51]. Therefore, improving nitrogen fertilizer application level is beneficial to the accumulation of phosphorus and potassium in soil and further promotes the absorption and utilization of soil water by potato.…”

Section: Discussionmentioning

confidence: 99%

Exploring Options for Improving Potato Productivity through Reducing Crop Yield Gap in Loess Plateau of China Based on Grey Correlation Analysis

2019

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Differences in crop yield between different fields in the same region have existed for a long time. Methods for improving the productivity of low-yield fields are a hot topic in large-scale agriculture. This experiment was carried out in potato planting farmland and at a potato experimental station in the Loess Plateau in China to study the effects of soil moisture and soil nutrients on potato yield potential and yield gap. The relationships between potato yield and soil nutrient factors were analyzed using the grey correlation method. The grey correlation method is a new technique for performing prediction, relational analysis and decision-making in many areas. The results indicate that (1) the high-yield group at the potato experimental station (HE) was 72,678 kg/ha; the mean-yield group at the potato experimental station (ME) was 36,083 kg/ha; the high-yield group in the potato planting farmland (HF) was 34,259 kg/ha; and the mean-yield group in the potato planting farmland (MF) was 19,386 kg/ha. (2) The yield gap (YG1) between HF and MF was 14,873 kg/ha; the yield gap (YG2) between ME and the MF was 16,697 kg/ha; the yield gap (YG3) between HE and the MF was 53291 kg/ha. (3) The effects of soil moisture and nutrients on potato yield were ranked from large to small: soil available potassium content > soil nitrate nitrogen content > soil organic matter content > soil water content > soil available phosphorus content. The results of correlation analysis and grey correlation analysis showed that the available potassium had the strongest correlation with potato tuber yield. (4) The content of nitrate nitrogen was significantly correlated with the content of available potassium and available phosphorus, while the water content was significantly correlated with the content of organic matter. According to the influence of soil moisture and nutrients on the potato tuber yield, it is suggested that integrated water and fertilizer cultivation measures be implemented, and the input of potash fertilizer and nitrogen fertilizer be increased.

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Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization

Cited by 51 publications

References 31 publications

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

The in‐season nitrogen concentration in the potato tuber as the yield driver

Exploring Options for Improving Potato Productivity through Reducing Crop Yield Gap in Loess Plateau of China Based on Grey Correlation Analysis

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