Effect of forage maize biochar and urea fertilizer on soil chemical properties and pepper yield under greenhouse conditions

Document Type : Research Paper


1 Ph.D. Candidate of Irrigation and Drainage, Department of Water Engineering, Aburaihan Campus, University of Tehran, Tehran, Iran.

2 Assistant Professor, Department of Water Engineering, Aburaihan Campus, University of Tehran, Tehran, Iran.

3 Professor, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resource, University of Tehran, Karaj, Iran.

4 Assistant Professor, Department of Horticulture, Aburaihan Campus, University of Tehran, Tehran, Iran.

5 Professor, Agricultural Engineering Research Institute (AERI), Karaj, Iran.


In order to investigate the effect of forage maize biochar and urea fertilizer application on bell pepper cultivar, a factorial experiment in a completely randomized design with three replicates and nine treatment was conducted. The treatments consisted of three levels of forage maize biochar (zero, 2, and 5% Soil weight) and three required urea fertilizer (75% 100%, and 120%). One bell pepper was transferred in 4-leaf pots containing 5 kg of soil and biochar, then in three stages and in each stage, 236, 314, and 376 mg kg-1 N of urea fertilizer was added to the pot. At the end stage of cultivation, EC, pH, Na, K, Ca+ mg, carbon organic, total nitrogen and wet yield fruit bell pepper measurements were done. The results indicated that the treatment of 120% urea fertilizer and 5 percentage biochar EC, pH, sodium, and total nitrogen cumulative in soil 41.7, 12.5, 2.1 and 58.3% and soil organic carbon 4.16 times, were compared to the control treatment. respectively. In 120% urea fertilizer and 5 percentage biochar treatment soil potassium increase by 96.8% in comparison with the control treatment. Also, the highest increase calcium and magnesium the treatment 100% urea fertilizer and 2 percentage biochar cumulative in soil by 58.3%. In addition, the results indicate that the treatment of 120% urea fertilizer without biochar increased the wet yield fruit of bell pepper by 61.5% compared to the control treatment.


Main Subjects

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