Abstract
This study aimed to determine the effects of three irrigation water levels on the yield, soluble solid content and some physiological traits of pepper plants in soils mixed with biochar at four different doses. The study was conducted as a pot experiment in three replications for each treatment setup in a completely randomized design under greenhouse conditions. The experiment comprised controlled/full irrigation (I0), 25% deficit irrigation (I1), 50% deficit irrigation (I2), and four biochar treatments: non-biochar at 0% (B0), biochar at 0.75% (B1), biochar at 1.5% (B2), and biochar at 3% (B3). Biochar application significantly increased pepper growth and yield. Significant improvements in the physiological properties of the plant with the increase in biochar dose (B1, B2, and B3) in deficit irrigation applications were determined. Under the 50% water deficit conditions (I2), the biochar amendments (B3I2, B2I2, and B1I2) increased the irrigation water productivity compared to the control (non-biochar, B0I2), as well as water savings of 18.4, 12.8 and 8.3%, respectively. Biochar amendments increased the moisture retention in the soil and saved irrigation water. In this study, the highest efficiency was obtained from the B3 (3% w:w) treatment. In addition, biochar increased irrigation water productivity by improving soil properties under water deficit conditions.
Zusammenfassung
Ziel dieser Studie war es, die Auswirkungen von drei Bewässerungswassermengen auf den Ertrag, den Gehalt an löslichen Feststoffen und einige physiologische Eigenschaften von Paprikapflanzen in Böden zu bestimmen, die mit Biokohle in vier verschiedenen Dosierungen gemischt wurden. Die Studie wurde als Topfversuch mit drei Wiederholungen für jede Behandlung in einem vollständig randomisierten Design unter Gewächshausbedingungen durchgeführt. Der Versuch umfasste eine kontrollierte/vollständige Bewässerung (I0), eine 25 %ige Defizitbewässerung (I1), eine 50 %ige Defizitbewässerung (I2) und vier Biokohle-Behandlungen: keine Biokohle bei 0 % (B0), Biokohle bei 0,75 % (B1), Biokohle bei 1,5 % (B2) und Biokohle bei 3 % (B3). Der Einsatz von Biokohle steigerte das Wachstum und den Ertrag von Paprika signifikant. Es wurden signifikante Verbesserungen der physiologischen Eigenschaften der Pflanze mit der Erhöhung der Biokohle-Dosis (B1, B2 und B3) bei der Anwendung von Defizitbewässerung festgestellt. Unter den Bedingungen eines 50-prozentigen Wasserdefizits (I2) steigerten die Biokohlezusätze (B3I2, B2I2 und B1I2) die Produktivität des Bewässerungswassers im Vergleich zur Kontrolle (ohne Biokohle, B0I2) und führten zu einer Wassereinsparung von 18,4 %, 12,8 % bzw. 8,3 %. Biokohlezusätze erhöhten die Feuchtigkeitsspeicherung im Boden und sparten Bewässerungswasser. In dieser Studie wurde die höchste Effizienz mit der Behandlung B3 (3 % w:w) erzielt. Darüber hinaus erhöhte Biokohle die Produktivität der Bewässerung durch Verbesserung der Bodeneigenschaften unter Wasserdefizitbedingungen.
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Cakmakcı, T., Sahın, U. Yield, Physiological Responses and Irrigation Water Productivity of Capia Pepper (Capsicum annuum L.) at Deficit Irrigation and Different Biochar Levels. Gesunde Pflanzen 75, 317–327 (2023). https://doi.org/10.1007/s10343-022-00703-5
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DOI: https://doi.org/10.1007/s10343-022-00703-5