Yield and yield components of rice in crop rotation with clover under the influence of nitrogen and potassium fertilizers

Document Type : Research Paper

Authors

1 PhD student in Agronomy, Faculty of Agriculture and Natural Resources, University of MohagheghArdabili, Ardabil, Iran

2 Professor, Department of Agronomy and Plant Breeding, University of Mohaghegh Ardabili, Ardabil, Iran

3 Assistant Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardebil, Ardebil, Iran

4 Associate Professor, Department of Soil Science, University of Mohaghegh Ardabili, Ardabil, Iran

5 agronomy and plant breeding, agronomy and natural resources, university of mohaghegh ardabili, ardabil, iran

10.22034/saps.2023.53709.2940

Abstract

Materials and Methods: This experiment was carried out in 2018 in the Lundville region of Astara for rice crop rotation, different amounts of nitrogen and potassium fertilizers, and varieties and dates of clover planting in the Gilan region. The experiment was evaluated in the form of s split-split plot with a completely randomized block design in three replications. The main factor includes nitrogen fertilizer with potassium at three levels (50, 100, and 150 kg per hectare) and the spreading of clovers in three different stages of rice growth, including after flowering, before harvest, and after harvest as split plot and secondary factors.
Findings: The results obtained from the variance analysis of the data showed that different levels of nitrogen and potassium fertilizers, distribution of clovers in different stages of rice growth, and clover cultivars on the height period, yield indices, and harvest index were significant in rice plants. Based on the results of comparing the average effects of treatments, it was observed that the highest yield of paddy per hectare was obtained under the conditions of application of 100 kg/hectare of fertilizer in the stage of spreading clovers after rice harvesting and from Iranian clover variety.
Conclusion: The use of nitrogen and potassium fertilizers along with crop rotation of rice and clover due to nitrogen stabilization and improvement of the soil substrate increased the height of the plant, increased the number of claws, spike length, the weight of 1000 seeds, and finally increased the yield of the rice plant.

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References

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JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION
Volume 33, Issue 4
June 2023
Pages 87-97

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