Synthesis and application of rare earth organic fertilizers on cucumbers

Nguyen Thi Ha Chi; Dao Ngoc Nhiem; Pham Ngoc Chuc; Doan Trung Dung; Nguyen Quang Bac

doi:10.51316/jca.2021.044

Authors

Nguyen Thi Ha Chi Institute of Materials Science, Viet Nam Academy of Science and Technology, Ha Noi, VIETNAM
Dao Ngoc Nhiem Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, VIETNAM
Pham Ngoc Chuc Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, VIETNAM
Doan Trung Dung Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, VIETNAM
Nguyen Quang Bac Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, VIETNAM

DOI:

https://doi.org/10.51316/jca.2021.044

Keywords:

Rare earth, organic fertilizers, cucumber

Abstract

Organic fertilizers of La, Nd, and Pr with tartaric acid ligands have been successfully synthesized. The efficiency of the complexing reaction was over 80%. The molecular formula of the complex was Ln₂(C₄H₄O₆)₃.nH₂O (Ln: La, Nd, Pr). The synthesized complexes were tested for the ability to stimulate growth and improve productivity for Thai cucumber. The study results showed that the complexes reduced the growth time of the plants and increased the yield by > 20%. Yields of cucumbers sprayed with rare earth tartrate complexes reached ~62 tons/ha and increased by 20% compared with control samples.

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