Document Type : Research Paper - Agroecology

Authors

1 Assistant Professor, Department of Agronomy, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

2 Ph.D. Student of Agronomy, Department of Agronomy, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

Abstract

Introduction
Today, efficient agricultural systems such as intercropping are essential due to the optimal use of resources. Meanwhile, using the Legume plant in intercropping can increase the efficiency of biological nitrogen fixation and be a sustainable approach to meet the crop's nitrogen needs. Since the planting pattern and component crop greatly influence this biological process, selecting complementary species in intercropping can play an essential role in increasing flexibility and sustainability in farming systems.
 
Materials and Methods
In order to study the effects of intercropping culture on the agronomic traits of Chia and Soybean, a field experiment was conducted in a randomized complete block design with four replications at the research farm of Sari Agricultural Science and Natural Resources University in 2019. The planting ratios were 0:100, 25:75, 50:50, 75:25, and 100:0 (Soybean: Chia respectively) using replacement method.
 
Results and Discussion
Results showed that intercropping significantly affected shoot height, No. branch, grain yield,
components yield, and the N. derived from the atmosphere (Ndfa). In the Chia, reducing the number of planting rows in different planting ratios, shoot height, and 1000-seed weight increased in contrast to the number of inflorescences per plant. Different planting ratios had no significant effect on the number of branches per plant of Chia. The soybean crop had the highest no. of branches, the number of pods per plant, and the 1000 seed weight in the 25:75 planting ratio. The highest shoot height was related to the monoculture soybean (100:0), and with decreasing the number of soybean planting rows in intercropping, the shoot height decreased. Also, the Ndfa in intercropping culture was higher than in monoculture during different growth stages. Its amount increased with a decreasing share of soybean planting in intercropping. Biological nitrogen fixation in soybean intercropping cultivation with Chia increased 75 days after planting and then decreased. Besides, the pure stand of Soybean (100: 0) and Chia (0: 100) had the highest and lowest grain yield with an average of 4629.57 and 823.14 kg. ha-1, respectively. Considering the total yield of Chia and Soybean in intercropping cultivation and the compensatory ability to increase the yield of Soybean against the decrease in the yield of Chia, the effect of competition between the two crops is positive complementation. lculation of land equivalent ratio (LER) revealed that the planting ratio of 25:75 had the highest efficiency by 22 percent.
 
Conclusion
Chia in intercropping can improve the yield components of Soybean while improving the efficiency of biological nitrogen fixation. Increasing the efficiency of intercropping cultivation in the planting ratio of 25:75 due to the increase of 75.37% is the share of the complementarity effect on grain yield, creating balance and facilitating inter-species competition.

Keywords

Main Subjects

Angland, J., Billen, G., & Garnier, J. (2015). Relationships for estimating N2 fixation in legumes: incidence for N balance of legume-based cropping systems in Europe. Ecosphere, 6(3), 1-24.
Bochicchio, R., Philips, T.D., Lovelli, S., Labella, R., Galgano, F., Di Marisco, A., & Amato, M. (2015). Innovative crop productions for healthy food: the case of chia (Salvia hispanica L.). In Vastola, A. (Ed). The sustainability of agro-food and natural resource system in the Mediterranean basin (pp: 29-47). Switzerland: Springer Press.
Callaway, R. M. (2002). The detection of neighbors by plants. Trends in Ecology and Evolution, 17(3), 104-105.
Cardoso, E. J. B. N., Nogueira, M. A., & Ferraz, S. M. G. (2007). Biological N2 fixation and mineral N in common bean – maize intercropping or sole cropping in southeastern Brazil. Experimental Agriculture, 43, 319-330.
Cataldo, D. A., Haroon, M., Schrader, L. E., & Youngs, V. L. (1975). Rapid colorimetric determination of nitrate in plant tissue by nitration of salicylic acid. Communications in Soil Science and Plant Analysis, 6(1), 71-80.
Corassa, G. M., Amado, T. J. C., Strieder, M. L., Schwalbert, R., Pires, J. L. F., Carter, P.R., & Ciampitti, I.A. (2018). Optimum soybean seeding rates by yield environment in Southern Brazil. Agronomy Journal, 110(6), 1-9.
Gasemi Maham, S., Fallah, S., & Tadaion, M. R. (2016). Variation in root and shoot growth, rhizobium nodules of Fenugreek (Trigonella foenum gracum) under fertilizer treatments and intercropping with Isabgol (Plantago ovate). Plant Productions, 39(1), 35-46. [In Farsi]
Hangria, M., & Mendes, I. C. (2015). Nitrogen fixation with soybean: the perfect symbiosis. In Bruijn, F. J. (Ed.), Biological nitrogen fixation (pp. 1009-1023.). New Jersey: John Wiley and Sons Press, ,
Hauggaard-Nielsen, H., Gooding, M., Ambus, P., Corre-Hellou, G., Crozat, Y., Dahlmann, C., … & Jensen, E.S. (2009). Pea–barley intercropping for efficient symbiotic N2-fixation, soil N acquisition and use of other nutrients in European organic cropping systems. Field Crop Research, 113(1), 64-71.
Herridge, D. F. (1984). Effects of nitrate and plant development on the abundance of nitrogenous solutes in root-bleeding and vacuum extracted exudates of soybean. Crop Science, 24(1), 173-179.
Hosseini, S. F., & Hamzei, J. (2021). Evaluation of quantitative and qualitative yield of Dracocephalum kotschyi Boiss. in conditions of intercropping with bean in Hamedan region. Medicinal and Aromatic Plants, 36(6), 923-946. [In Farsi]
Hu, F., Gan, Y., Chai, Q., Feng, F., Zhao, C., Yu, A., … & Zhang, Y. (2016). Boosting system productivity through the improved coordination of interspecific competition in maize-pea strip intercropping. Field Crop Research, 198(1), 50-60.
Hungria, M., Franchini, J. C., Campo, R. J., Crispino, C. C., Moraes, J. Z., Sibaldelli, R. N. R., … & Arihara, J. (2006). Nitrogen nutrition of soybean in Brazil: contributions of biological N2 fixation and of N fertilizer to grain yield. Canadian Journal of Plant Science, 86(4), 927-939.
Islam, M. A., & Adjesiwor, A. T. (2018). Nitrogen fixation and transfer in agricultural production systems. In Amanullah, K., & Fahad, S. (Ed.). Nitrogen in agriculture (pp. 95-110). London: INTECH Press.
Ixtaina V. Y, Nolasco, S. M., & Tomas, M. C. (2008). Physical properties of chia (Salvia hispanica L.) seeds. Industrial Crops and Products, 28(3), 286-293.
Kabebew, S. (2014). Intercropping soybean (Glycine max L. Merr.) at different population densities with maize (Zea mays L.) on yield component, yield and system productivity at Mizan Teferi, Ethiopia. Journal of Agricultural Economics, Extension and Rural Development, 1(7), 121-127.
Khalid, M. H. B., Reza, M. A., Yu, H. Q., Sum, F. A., Zhang, Y. Y., Lu, F. Z., … & Li., W. C. (2018). Effect of shade treatments on morphology, photosynthetic and chlorophyll flurescence characteristics of soybeans (Glycine max L. merr.). Applied Ecology and Environmental Research, 17(2), 2551-2569.
Layek, J., Shivakunar, B. G., Rana, D. S., & Munda, S. (2015). Effect of nitrogen fertilization on yield, intercropping indices and produce quality of different soybean+cereal intercropping systems. Indian Journal of Agronomy, 60(2), 230-235.
Loreau, M., & Hector, A. (2001). Partitioning selection and complementarity in biodiversity experiments. Nature, 412(1), 72-76.
Luca, M. J. D., & Hungria, M. (2014). Plant densities and modulation of symbiotic nitrogen fixation in soybean. Scientia Agricola, 71(3), 181-187.
Lv, Y., Francis, C., Wu, P., Chen, X., & Zhao, X. (2014). Maize–Soybean intercropping interactions above and below ground. Crop Science, 54(3), 914-922.
Maghsoudi, A., Ezadi Darbandi, E., & Moaey, E. (2020). Evaluating yield and land equivalent ratio in mixcropping of balangu (Lallemantia royleana Benth.) and chickpea (Cicer arietinum L.) affected by weed competition. Iranian Journal of Pulses Research, 10(2), 90-103.
Mead, R., & Willey, R. W. (1980). The concept of a land equivalent ratio and advantages in yields for intercropping. Experimental Agriculture, 16(3), 217-228.
Monti, M., Pellicano, A., Santonoceto, C., Preiti, G., & Pristeri, A. (2016). Yield components and nitrogen use in cereal-pea intercrops in Mediterranean. Field Crop Research, 196(1), 379-388.
Namdari, M., Behdani, M. A., & Arab, Gh. (2012). Effect of yield, yield components and seed quality of intercropping soybean cultivars in Gaem shahr weather conditions. Plant Productions, 34(3), 13-25. [In Farsi]
Oluwaseyi, S. O., Ayangbenro, A. S., Glick, B. R., & Babalola, O. (2019). Plant health: feedback effect of root exudates-rhizobiome interactions. Applied Microbiology and Biotechnology, 103(3), 1155-1166.
Osang, P. O., Richard, I. B., & Degri, M. M. (2015). Assessment of the agronomic performance of two varieties of soybean as influence by time of introduction of maize and cropping pattern. International Letters of Natural Sciences, 31(1), 36-46.
Rabiee, M., & Farahdahr, F. (2020). Evaluation of yield and advantages of forage legumes with cereals intercropping as second crop in paddy fields. Plant Productions, 43(3), 363-374. [In Farsi]
Ruhlemann, L., & Schmidtke, K. (2015). Evaluation of mono-cropped and intercropped grain legumes for cover cropping in no-tillage and reduced tillage organic agriculture. European Journal of Agronomy, 65(1), 83-94.
Stomph, T., Dordas, C., Baranger, A., De Rijk, J., Dong, B., Evers, J., … & Werf, W. V. (2020). Designing intercrops for high yield, yield stability and efficient use of resources: Are there principles: 1-50. In: Sparks, D. L., (Ed.). Advances in agronomy (p. 350). Amsterdam: Elsevier Press.
Unkovich, M., Herridge, D. F., Peoples, M., Cadisch, G., Boddey, B., Giller, K., … & Chalk, P. (2008). Measuring plant-associated nitrogen fixation in agricultural systems. Australian Center for International Agricultural Research (ACIAR). P. 258.
Willer, H., & Lernoud, J. (2017). The world of organic agriculture. Statistics and emerging trends 2017 (pp. 1-336). Research Institute of Organic Agriculture FiBL and IFOAM Organics International.
Wu, Y., Gong, W., & Yang, W. (2017). Shade inhibits leaf size by controlling cell proliferation and enlargement in soybean. Scientific Reports, 7(1), 1-10.
Yang, F., Fan, Y., Wu, X., Cheng, Y., Liu, Q., Feng, L., … & Yong, T. (2018). Auxin-to-gibberellin ratio as a signal for light intensity and quality in regulating soybean growth and matter partitioning. Frontiers Plant Science, 9(56), 1-13.
Yang, W., Li, Z., Wang, J., Wu, P., & Zhang, Y. (2013). Crop yield, nitrogen acquisition and sugarcane quality as affected interspecific competition and nitrogen application. Field Crop Research, 146, 44-50.
Young, E.G., & Conway, C.F. (1942). On the estimation of allantoin by the Rimini-Schryver reaction. Journal of Biological Chemistry, 142(1), 839-853.
Yu, Y., Stomph, T. J., Makowski, D., & Werf, W. V. (2015). Temporal niche differentiation increases the land equivalent ratio of annual intercrops: A meta-analysis. Field Crop Research, 184(1), 133-144.
Zaeem, M., Nadeem, M., Pham, T., Ashiq, W., Ali, W., Gilani, S. S., … & Thomas, R. (2019). The potential of corn-soybean intercropping to improve the soil health status and biomass production in cool climate boreal ecosystems. Scientific Reports, 9(1), 1-17.