Comparison of the partial root drying and conventional drip irrigation regimes on seed, oil yield quality, and economic return for peanut crop

• Published in: Irrigation science Vol. 41; no. 5; pp. 603 - 628
• Main Authors: Sezen, S. Metin, Yamaç, Sevim Seda, Konuşkan, Dilşat Bozdoğan, Yilmaz, Ibrahim, Yıldız, Mehmet, Kara, Orhan, Maambo, Clever Mwika
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2023; Springer Nature B.V
• Subjects: Agricultural production; Agriculture; Aquatic Pollution; Biomedical and Life Sciences; Climate Change; Climatic conditions; Crop yield; Crops; Drip irrigation; Drying; Economics; Environment; Evaporation; Evapotranspiration; Fatty acids; Growing season; Interleukin 1; Irrigation; Irrigation water; Legumes; Life Sciences; Linoleic acid; Oil; Oils & fats; Oleic acid; Original Paper; Palmitic acid; Pan evaporation; Peanuts; Seasons; Stearic acid; Sustainable Development; Waste Water Technology; Water deficit; Water Industry/Water Technologies; Water Management; Water Pollution Control; Water stress; Weight; Yields
• ISSN: 0342-7188; 1432-1319
• DOI: 10.1007/s00271-023-00854-x

This study compares conventional drip irrigation (CDI) and partial root drying (PRD) on yield components, oil quality, and economic return of peanut crops in the 2014 and 2015 growing seasons in the Mediterranean climatic conditions of Türkiye. The main plots and subplots consisted of 3 irrigation frequencies (IF 25 ; IF 50 and IF 75 ) and 7 irrigation levels (IL 0.50  = 0.50, IL 0.75  = 0.75, IL 1.0  = 1.00, IL 1.25  = 1.25, IL PRD50 , IL PRD75 , and IL PRD100 ). Of the subplots, 4 were CDI treatments (IL 0.50  = 0.50, IL 0.75  = 0.75, IL 1.0  = 1.00, IL 1.25  = 1.25), and 3 were PRD treatments (IL PRD50 , IL PRD75 , and IL PRD100 ). CDI treatments (IL 0.50 , IL 0.75 , IL 1.0 , and IL 1.25 ) received 50, 75, 100, and 125 of Cumulative Pan Evaporation. In addition, PRD treatments (IL PRD50 , IL PRD75 , and IL PRD100 ) were considered. They received 50, 75, and 100% of IL1.0 treatment from alternate laterals, respectively. The largest and the smallest average peanut yields were obtained from the IF 50 IL 1.25 and IF 75 IL 0.50 treatments each year. The result showed that increasing the irrigation water amount increases the oil yield. The highest oil content, peanut yield, and generating maximum return were obtained from IF 50 IL 1.25 in both growth years. The saturated and unsaturated fatty acid contents were remarkably influenced by IFs and ILs. Stearic acid concentration considerably decreased under unstressed conditions, while palmitic acid values increase. The peanut quality was also affected under water stress with lower oil content. PRD has a marked effect on peanut quality under deficit irrigation of water applied with significantly reduced compared with DI. The high oil yield response factor (ky oil ) value acquired for the peanut crop indicated its high sensitivity to irrigation interval and water deficit. It was determined that there are considerable linear relationships between the oleic acid and linoleic acid contents compared to crop evapotranspiration (ET c ) during different irrigation intervals in each season. Economic assessment expressed that IF 50 IL 1.25 treatment attained the highest seed and oil yield of peanuts and maximum net return in both seasons. Overall, the findings showed that pod yield per hectare, pod weight per plant, pod number per plant, shelling percentage, palmitic and linoleic acid percentage, oil percentage, and 100-seed weight values increased with increasing irrigation water at each irrigation interval, but oleic and stearic acid percentages decreased in both years.