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    Influence of different irrigation methods and irrigation levels on water use efficiency, yield, and yield attributes of sweet potatoes
    (Parlar Scientific Publications, 2015) Önder, Derya; Önder, Sermet; Çalişkan, Mehmet Emin; Çalişkan, Sevgi
    This study examines the effects of irrigation methods and irrigation levels on sweet potatoes under field conditions in the Eastern Mediterranean region of Turkey. The experimental treatments included two irrigation methods and four different irrigation levels: blocked-furrow (BF) and drip (DI) irrigation. The irrigation levels were full irrigation (IR100), 66% of full irrigation (IR66), 33% of full irrigation (IR33), and not irrigated (IRO) treatments. Total of 11 irrigation applications were made at weekly intervals throughout the season. The blocked-furrow and drip irrigation both received the same amount of irrigation water. The full irrigation treatment received (IR100) 798 mm of water, and was followed by the treatments of IR66 and IR33, receiving 631 and 471 mm of irrigation water, respectively. The range of evapotranspiration (ET) recorded under BF treatment was 360-691 mm; whereas it was 360-691 mm with DI treatments. Tuber yields showed a wide range of variation as 11.94-51.091 ha-1. The significant (P<.01) yield differences were recorded among the different irrigation methods and irrigation levels. It was noted that tuber yield under DI was 13% higher compared to BF. The irrigation water use efficiency (IWUE) and water use efficiency (WUE) ranged from 36.8 to 65.7 kg ha-1 mm-1 and from 33.2 to 75.9 kg ha-1 mm-1, respectively. The yield reduction recorded when deficit irrigation was imposed under DI (i.e., D33, D66) was proportionally lower, therefore given higher water use efficiency, than with BF.
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    Potato Production Worldwide
    (Elsevier, 2022) Çalişkan, Mehmet Emin; Bakhsh, Allah; Jabran, Khawar
    Potato is a crop grown on all inhabited continents of the globe. It is included in the top five crops of the world, used as staple food in several countries, and the number of people daily consuming the potato may surpass one billion. Despite the high quantities of seed potato produced worldwide, there are yield gaps due to challenges such as abiotic stresses, pests, climate change and poor production practices. A region-wide critical analysis of yield declining factors can help formulate management strategies that can improve potato yields. Bridging yield gaps in potato will ultimately ensure the role of this crop in securing current and future food security. Potato Production Worldwide presents information on this global crop from its history, morphology, and taxonomy to the growth and development of the potato crop, including the latest strategies in addressing today’s biotic and abiotic challenges. This book identifies the reasons for yield gaps in various potato production regions of the world, as well as presenting the best production practices, pest management strategies and approaches to deal with climate change from the perspective of potato production. Chapters provide important insights into potato production cultures and approaches in the major potato production countries. Potato Production Worldwide will be a valuable resource for researchers, scientists and students seeking a comprehensive view of successful potato production. © 2023 Elsevier Inc. All rights reserved.