Improving potato productivity and mitigating nitrogen losses using enhanced-efficiency fertilizers: A global meta-analysis

Pan, Zhaolong; Fan, Daijia; Jiang, Rong; Abbasi, Naeem Akhtar; Song, Daping; Zou, Guoyuan; Wei, Dan; He, Ping; He, Wentian

doi:10.1016/j.agee.2023.108416

Cited by 14 publications

(4 citation statements)

References 66 publications

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“…Potato (Solanum tuberosum L.) is the world's fourth-largest food crop after wheat, rice, and maize. It is native to the Andes Mountains in South America and is now widely cultivated around the world [1]. Potato is also the fourth-largest staple crop in China, and it is often affected by a variety of adversities during its growth and development, with drought and soil salinization being the main environmental factors restricting its yield and quality in the northern region of China [2].…”

Section: Introductionmentioning

confidence: 99%

StMAPKK5 Positively Regulates Response to Drought and Salt Stress in Potato

Luo,

Wang,

Zhu

et al. 2024

IJMS

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MAPKKs, as one of the main members of the mitogen-activated protein kinase (MAPK) cascade pathway, are located in the middle of the cascade and are involved in many physiological processes of plant growth and development, as well as stress tolerance. Previous studies have found that StMAPKK5 is responsive to drought and salt stress. To further investigate the function and regulatory mechanism of StMAPKK5 in potato stress response, potato variety ‘Atlantic’ was subjected to drought and NaCl treatments, and the expression of the StMAPKK5 gene was detected by qRT-PCR. StMAPKK5 overexpression and RNA interference-mediated StMAPKK5 knockdown potato plants were constructed. The relative water content, superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities, as well as proline (Pro) and malondialdehyde (MDA) contents of plant leaves, were also assayed under drought and NaCl stress. The StMAPKK5 interacting proteins were identified and validated by yeast two-hybrid (Y2H) and bimolecular fluorescence complementation (BiFC). The results showed that the expression of StMAPKK5 was significantly up-regulated under drought and NaCl stress conditions. The StMAPKK5 protein was localized in the nucleus, cytoplasm, and cell membrane. The expression of StMAPKK5 affected the relative water content, the enzymatic activities of SOD, CAT, and POD, and the proline and MDA contents of potatoes under drought and salt stress conditions. These results suggest that StMAPKK5 plays a significant role in regulating drought and salt tolerance in potato crop. Yeast two-hybrid (Y2H) screening identified four interacting proteins: StMYB19, StZFP8, StPUB-like, and StSKIP19. BiFC confirmed the authenticity of the interactions. These findings suggest that StMAPKK5 is crucial for potato growth, development, and response to adversity.

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Section: Introductionmentioning

confidence: 99%

StMAPKK5 Positively Regulates Response to Drought and Salt Stress in Potato

Luo,

Wang,

Zhu

et al. 2024

IJMS

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“…Other options to reduce nutrient leaching on sandy soils that has not been widely tested yet in South Africa include the use of slow-release fertilizers and of super adsorbent polymers. Further research is still required to evaluate products to ensure that nutrient release closely matches plant growth requirements in different environments, and assess the cost-effectiveness of products (Duan et al, 2023;Pan et al, 2023;Zheng et al, 2023). Although P leaching rates were generally low, the observed leaching of 51 kg P ha −1 (Field 11) does indicate a risk of P leaching in case P is applied through fertigation.…”

Section: Discussionmentioning

confidence: 99%

In-field assessment of the variability in water and nutrient use efficiency among potato farmers in a semi-arid climate

Franke,

Machakaire,

Mukiibi

et al. 2023

Front. Sustain. Food Syst.

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Precise water management is imperative for sustainable crop production under irrigation in semi-arid regions with increasingly variable rainfall. Water use efficiencies achieved by farmers often differ widely, even within regions with homogenous agro-ecological conditions. To better understand the drivers of this variability and derive management recommendations, detailed measurements of water and associated nutrient dynamics were conducted on 20 potato farms in two regions of South Africa. Crop characteristics and typical growing conditions in South Africa make potato cultivation sensitive to water and nutrient losses. Water and nutrient inputs and losses through drainage and plant uptake were measured in potato and the follow-up crop, along with yield and weather variables. Seasonal mean irrigation and evapotranspiration were lower in winter crops (240 mm irrigation, 236 mm evapotranspiration) than in summer crops (598 mm irrigation, 608 mm evapotranspiration). Seasonal field water balances were often close to zero, indicating that estimations of evapotranspiration and drainage were representative for the greater field. Lysimeter observations however appeared more representative in sandy unstructured soils than in heavier structured soils. Rainfall during cropping reduced demand for irrigation and increased water use efficiency based on irrigation water, but caused substantial drainage. Leaching of N and K was considerable (on average 30 kg N, 55 kg K ha−1, much higher in some fields), while P leaching was negligible, with the exception of one field (51 kg P ha−1). Variation in water and nutrients use efficiencies was the result of management decisions and environmental factors, such as rainfall and soil type. Without substantial rainfall, application of irrigation scheduling tools can keep drainage and nutrient losses to a minimum, as was observed on almost half the fields, even on sandy soils with a low water holding capacity. Potato yields greatly varied among farmers (9.1–24.7 t dry matter tuber ha−1). Efficient farmers included those who used water sparsely and had minimal drainage, but also farmers who used inputs judiciously and obtained excellent productivity. The role of follow-up crops as users of surplus nutrients and water left behind by the potato crop was not always evident.

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“…Intensified N fertilization decreased the content of dry matter and starch in potato tubers [25,26]. At the same time, excessive fertilizer usage leads to the waste of resources, reduction of biodiversity, and environmental pollution [27][28][29], which restricts agricultural production.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of Potato Fertilization and the Potential of Farmers to Reduce the Amount of Fertilizer Used Based on Yield and Nutrient Requirements

Wang,

Zhang,

et al. 2024

Agronomy

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Unreasonable fertilization often fails to match crop yield and nutrient requirements, leading to low crop yield, the waste of mineral resources, and increased costs for farmers. A survey of the potato yield and fertilization of farmers was conducted in Haidong City of Qinghai Province for three consecutive years (2017–2019) torecommend reasonable fertilizer application. The results showed that the required amount of NPK fertilizer per ton of potato was 4.85 kg N, 1.26 kg P2O5, and 6.98 kg K2O, respectively. The potato yields ranged from 7500 to 66,429 kg ha−1, with an average of 26,069 kg ha−1. The average N, P, and Kfertilizers (in the form of N, P2O5, and K2O, respectively) applied by the farmers were 213 kg N ha−1, 202 kg P2O5ha−1, and 43 kg K2O ha−1. More than 60% of the farmers appliedtoo much Nand Pfertilizers and too little Kfertilizer. Therefore, the farmers with lowyieldsshould reduce the application of Nand P fertilizers by a range of 41–220 kg ha−1 and 24–265 kg ha−1. Allthe farmers should increase Kfertilizer use by 7–273 kg ha−1. Reasonable fertilization could effectively conserve resources, improve economic efficiency, and reduce environmental impact.

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Improving potato productivity and mitigating nitrogen losses using enhanced-efficiency fertilizers: A global meta-analysis

Cited by 14 publications

References 66 publications

StMAPKK5 Positively Regulates Response to Drought and Salt Stress in Potato

StMAPKK5 Positively Regulates Response to Drought and Salt Stress in Potato

In-field assessment of the variability in water and nutrient use efficiency among potato farmers in a semi-arid climate

An Evaluation of Potato Fertilization and the Potential of Farmers to Reduce the Amount of Fertilizer Used Based on Yield and Nutrient Requirements

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