Effect of microfertilizer application on yield and yield components of rice Ali Kazemi Landrace in Guilan Province

Document Type : Original Article

Authors

1 Department of Agronomy and Plant Breeding, Faculty of Agricultural Sciences, Univesity of Guilan, Rasht, Iran.

2 Department of Agronomy and Plant Breeding, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran and Associate Professor, Faculty of Agricultural Sciences, Univesity of Guilan, Rasht, Iran.

10.22126/cbb.2026.13755.1137

Abstract

Introduction: One of the solutions to improve food security for the world's growing population is to increase the amount of production per unit area. The most important factor related to crop production is proper plant nutrition, which plays a significant role in increasing yield. Silicon and zinc, among the nutrients, play a key role in increasing growth and improving the quantitative and qualitative yield of crops, especially rice.
Materials and methods: This study aimed to investigate the effect of micro-fertilizers on quantitative and qualitative traits of rice (Oryza sativa L.) Ali Kazemi Landrace in Qale Rudkhan village, Fouman county, Guilan province, in 1401. The experiment was conducted in a randomized complete block design with three replications. The treatments studied included 16 treatment combinations of various micro-fertilizers in the form of foliar spraying and soil application. At the end of the experiment, yield components, paddy yield, biological yield, and harvest index were evaluated.
Results: The results showed the effect of zinc and silicon fertilizers on all studied traits was significant at the 1% probability level. The soil application of powdered silicate as fertilizer showed the highest spike length. Fertilizers containing zinc and silica also reduced the number of empty grains per spike. Application of fertilizer treatments improved the number of fertile tillers, number of filled grains, 1000-grain weight, paddy yield, biological yield, and harvest index compared to the control. Paddy yield in treatments T2 (soil application of zinc sulfate), T10 (soil application of powdered silicate along with spraying of fertilizer containing silica), T13 (soil application of zinc sulfate and powdered silicate along with spraying of fertilizer containing silica) and T16 (spraying and soil application of two types of fertilizers) were higher than other treatments and control. They were placed in the same statistical group. In treatments T2 (soil application of zinc sulfate), T10 (soil application of powdered silicate  along with spraying of fertilizer containing silica) and T16 (spraying and soil application of two types of fertilizers) also showed higher biological yield. The harvest index in treatment T16 (spraying and soil application of two types of fertilizers) was the highest.
Conclusion: Treatments of T2 (soil application of zinc sulfate), T10 (soil application of powdered silicate along with foliar application of fertilizer containing silicon) and T16 (solution spraying and application of zinc and silicon fertilizer in soil) showed the highest 1000-grain weight, paddy yield and biological yield. Therefore, the use of zinc and silicon fertilizers was able to increase the yield components and grain yield of Ali Kazemi's landrace. Low levels of micronutrients in cereals and reduced dietary diversity led to malnutrition, which this is one of the current problems of the country. Therefore, considering the effect of silicon and zinc elements on the quantity and quality of rice grain and their ability to modulate the effects of biotic and abiotic stresses, their optimal use seems essential.

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