Article
Agronomy
Roberta Camargos Oliveira, Joao Ricardo Rodrigues da Silva, Regina Maria Quintao Lana, Alexandre Igor de Azevedo Pereira, Renata Castoldi, Reginaldo de Camargo, Jose Magno Queiroz Luz
Summary: This study evaluated the productivity of potato tubers under different rates of nitrogen, phosphorus, and potassium fertilizers using leaf nutrient analysis. The results showed differences in nutrient requirements and balance among regions and cultivars, highlighting the importance of considering soil conditions and cultivar nutrient uptake/translocation capacity when establishing fertilizer rates.
Article
Agronomy
Chedzer-Clarc Clement, Athyna N. Cambouris, Noura Ziadi, Bernie J. Zebarth, Antoine Karam
Summary: Nitrate leaching is a significant environmental concern, especially for potatoes grown on sandy soils. This study found that under irrigation, the use of PCU reduced NO3--N leaching compared to PCU + urea, but both increased leaching compared to the conventional fertilizer mixture. Despite lower plant N uptake, PCU resulted in greater yields compared to PCU + urea, showing that the efficiency of PCU in reducing NO3--N leaching may vary depending on precipitation and irrigation timing.
Article
Environmental Sciences
Wenjun Jiang, Weichen Huang, Hao Liang, Yali Wu, Xinrui Shi, Jin Fu, Qihui Wang, Kelin Hu, Lei Chen, Hongbin Liu, Feng Zhou
Summary: The study demonstrates that rice fields can act as both nitrogen sources and sinks under different climatic conditions. By improving management technologies, rice fields can be transformed into nitrogen sinks for the atmosphere while reducing nitrogen emissions to water bodies, without affecting rice yield and soil fertility.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
E. Shtull-Trauring, A. Cohen, M. Ben-Hur, M. Israeli, N. Bernstein
Summary: Treated wastewater (TWW) is increasingly used for agricultural irrigation, with higher concentrations of plant nutrients N, P, and K than freshwater. However, excessive nutrient inputs can be harmful. The study developed six indices to assess TWW-irrigation sustainability and spatio-temporal trends in NPK loads, indicating the need for redistribution of high-quality TWW in specific areas and the development of local environmental standards for maximizing nutrient utilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agricultural Engineering
Tianyu Wang, Zhenhua Wang, Jinzhu Zhang, Kai Ma
Summary: The study aimed to examine the effects of irrigation water quantity, irrigation water salinity, and nitrogen application rate on nitrogen fertilizer absorption and cotton yield. The results showed that the salinity of irrigation water had no effect on soil nitrogen transport, and the soil nitrogen content increased with the increase in nitrogen application. A low level of irrigation increased the lateral migration of nitrogen, whereas excessive irrigation increased the migration of nitrogen to deep soil. The most recommended irrigation and fertilization strategy was 675 mm irrigation amount, 1.5 dS m(-1) irrigation water salinity, and 200 kg N ha(-1) nitrogen application.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Plant Sciences
Wenyuan Yan, Junhong Qin, Yinqiao Jian, Jiangang Liu, Chunsong Bian, Liping Jin, Guangcun Li
Summary: The study found that potato plants adapt to changes in soil water and nitrogen content by altering gene expression and physiological characteristics. Genes related to photosynthetic pigments and oxygen release complex were up-regulated, while genes encoding rate-limiting enzymes in the Calvin-Benson-Bassham cycle were increased. Furthermore, genes related to root nitrogen metabolism were highly expressed, and protein content in the tuber increased. A molecular model of potato responses to alterations in soil water and nitrogen content was constructed.
Article
Plant Sciences
Caroline Merlo Meneghelli, Paulo Cezar Rezende Fontes, Carla do Carmo Milagres, July Anne Amaral de Abreu, Karoline Matiello Almeida
Summary: The objective of this study was to assess the impact of N doses estimated by algorithms and applied as top-dressing on various nitrogen (N) efficiency indices in Asterix potatoes. Two field experiments were conducted using a randomized block design, with four replicates. At 21 DAE, the fourth fully developed potato leaf was evaluated using the SPAD chlorophyll meter as an indicator for top dressing. Variables such as N content, N absorption, harvest index, and N use efficiency were measured during tuber harvesting. The results showed that the N dose applied pre-planting and the N dose estimated by the N cover recommendation criteria significantly influenced the N absorption and agronomic efficiency.
JOURNAL OF PLANT NUTRITION
(2023)
Article
Horticulture
Danijela Zunic, Vladimir Sabados, Dorde Vojnovic, Ivana Maksimovic, Dusan Ilin, Aleksandra Tepic Horecki, Zarko Ilin
Summary: This two-year study investigates the impact of irrigation, fertilization, and cultivar on potato yield and chip quality. The results emphasize the importance of selecting appropriate irrigation methods, fertilization strategies, and cultivars for high yields and high-quality chips.
Article
Agronomy
Jan Lukas Wenzel, Christopher Conrad, Thomas Piernicke, Daniel Spengler, Julia Poehlitz
Summary: Efficient water use is crucial for potato production. This study found that reducing irrigation levels to 90% did not affect yield and starch production, while significant water savings could be achieved.
Article
Agronomy
Libby R. Rens, Lincoln Zotarelli, Andre Luiz Biscaia Ribeiro da Silva, Camila J. B. Ferreira, C. Tormena, Diane L. Rowland, Kelly T. Morgan
Summary: This study focused on the impact of water table levels and nitrogen fertilizer rates on potato growth and tuber yield, showing that optimal soil water content and water table management play a crucial role in maximizing crop yields and quality. Adjusting water table levels throughout the season according to crop evapotranspiration can reduce irrigation water requirements and minimize the risks of soil water saturation and yield losses.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Plant Sciences
Mingjing Zhou, Yiming Sun, Shaoxia Wang, Qing Liu, Huan Li
Summary: This study aimed to determine the appropriate irrigation level for late-season sweet potato and its effect on the accumulation and allocation of photosynthetic products. The results showed that moderate irrigation (T-2) effectively promoted the source-sink balance and increased yield, water use efficiency, and water productivity. Economic benefit and marketable sweet potato yield were highest under moderate irrigation (T-2).
Review
Agronomy
Bhimsen Shrestha, Murali Darapuneni, Blair L. Stringam, Kevin Lombard, Koffi Djaman
Summary: This review examines the effects of irrigation and nitrogen management practices on potato growth and discusses the potential benefits of deficit irrigation strategies in potato production. It emphasizes the importance of finding optimal irrigation and nitrogen management techniques to improve water and nitrogen use efficiencies while maintaining potato yield and quality.
Article
Ecology
Freddy A. Diaz-Gonzalez, Jose. Vuelvas, Victoria E. Vallejo, D. Patino
Summary: Sustainable agriculture is crucial in addressing climate change and pollution. Limited use of technology in Colombia's agriculture leads to a lack of timely and accurate information for decision-making, particularly in determining nitrogen fertilizer rates. To tackle this issue, researchers have developed a fertilization rate optimization model for potato crops in Colombia, aiming to maximize yield while minimizing nitrogen emissions.
ECOLOGICAL MODELLING
(2023)
Article
Agronomy
Xinrui Fan, Weixia Zhao, Jiusheng Li
Summary: The dual role of nutrient uptake by plant roots and leaves is a major advantage of sprinkler fertigation. Improper solution concentration can suppress plant physiology and cause foliar burns. Field experiments were conducted to explore suitable solution concentrations of nitrogenous fertilizer, phosphate fertilizer, and potassium fertilizer for maize. The results showed that different fertilizer types and spraying opportunities had a significant impact on plant physiology, and specific recommendations were given for each growth stage.
IRRIGATION SCIENCE
(2023)
Article
Multidisciplinary Sciences
Kailou Liu, Jiangxue Du, Yijun Zhong, Zhe Shen, Xichu Yu
Summary: The application of nitrogen fertilizer on potato crops in red soil can significantly increase tuber yield, but excessive application rates do not show significant improvements. The optimal nitrogen fertilizer application rate for highest tuber yields is estimated to be between 191-227 kg ha(-1).
SCIENTIFIC REPORTS
(2021)
