The effect of chemical and biological nitrogen fertilizers on yield and yield components of safflower (Carthamus tinctorius L.) and mung bean (Vigna radiate L.) in intercropping

Articles in Press

Document Type : Research Paper

Authors

1 Department of Agronomy, Faculty of Agriculture, Yasouj University

2 Department of Agronomy and plant breeding, Faculty of Agriculture, Yasouj University

3 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University

4 Assistant Professor, Horticulture Crops Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran

5 Academic staff of Isfahan Agricultural and Natural Resources Research and Education Center

Abstract

Background and Objective: Intercropping of leguminous plants with oil plants is a relatively new approach to achieve sustainable agriculture. Improving plant nutrition through integrated management increases the efficiency of intercropping systems. The purpose of this research is to investigate the response of safflower and mung bean to the integrated application of nitrogen fertilizers in intercropping.
Material and Methods: The experiment was conducted as a split plot base on the randomized complete block design with 3 replications in 2019. The experimental factors include the application of nitrogen fertilizer (0, 50 kg.ha-1 of nitrogen + Nitroxin and 100 kg.ha-1 nitrogen) in the main plots and the intercropping patterns (pure cropping of safflower and mung bean and their intercropping with ratios of 1:1, 2:1 and 1:2) were in sub-plots. Morphological traits, yield and yield components of two plants and land equivalent ratio were evaluated.
Results: The results showed that in the conditions of no application of nitrogen fertilizer, the grain yield of safflower and mung bean in intercropping patterns was reduced compared to pure cropping. The application of 50 kg.ha-1 of chemical nitrogen + Nitroxin biological nitrogen fertilizer compensated the decrease in yield in intercropping proportions. The land equivalent ratio in all intercropping patterns was higher than one, which indicated the usefulness of intercropping of these crops compared to pure cultivation.
Conclusion: In general, based on the results, the ratio 2:1 of mung beans and safflower intercropping with 50 kg.ha-1 + Nitroxin can be introduced for more efficient use of land.

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JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION

Articles in Press, Accepted Manuscript
Available Online from 22 October 2025

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