َAzam Sadat Yousefi; Mohammad Ali Bahmanyar; Bahi Jalili; Mahdy Ghajar
Abstract
Objective: Proper nutrition program is one of the main ways to improve plant quality and has a significant role in increasing its performance.Methods: To investigate the effect of the use of organic and mineral sources containing silicon on the concentration of silicon, nitrogen, phosphorus and potassium ...
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Objective: Proper nutrition program is one of the main ways to improve plant quality and has a significant role in increasing its performance.Methods: To investigate the effect of the use of organic and mineral sources containing silicon on the concentration of silicon, nitrogen, phosphorus and potassium in rice plants (Oryza sativa L.), an experiment in the form of chopped plots with three replications in the fields of Dazmirkandeh village in the suburbs of Sari city in 2019. All the experimental steps were done in the laboratory of Sari University of Agricultural Sciences and Natural Resources. The main factor was two varieties of rice and the secondary factor was the type and amount of silicon sources in 11 levels of fertilizer treatment.Results: According the results, the simple effect of variety and different sources of silicon on the concentration of silicon was significant in the flag leaf, biomass and grain of rice. The average concentration of nutrients in aerial organs in Tarem Hashemi cultivar was more than Shiroudi cultivar and different sources of silicon could increase the concentration of silicon elements in flag leaves by 70%, biomass by 16% and seeds by 20%, and nitrogen by 12 and 55 respectively, and 50%, increase phosphorus by 100, 60 and 87% and finally increase potassium by 20, 15 and 50%.Conclusion: In general, the use of all silicate treatments compared to the control treatment and basic fertilizer increased the concentration of silicon and other elements in the aerial parts of the plant.
mehrdad ranjbar; Fardin Sadegh-Zadeh; mostafa emadi; Mehdi Ghajar Sepanlou; Abdolghafour Ahmadpour Dashliboroun
Abstract
In order to investigate the effect of different biochar and chemical fertilizers on growth and nutrient concentrations of sugarcane, a factorial layout has been conducted based on a randomized complete block design with three replications in the greenhouse of Imam Khomeini Agro-Industrial Company in ...
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In order to investigate the effect of different biochar and chemical fertilizers on growth and nutrient concentrations of sugarcane, a factorial layout has been conducted based on a randomized complete block design with three replications in the greenhouse of Imam Khomeini Agro-Industrial Company in Khuzestan during 2020. The experimental factors include biochar types (sugarcane bagasse, rice husk, rice straw, wheat straw and wood chips) and Chemical fertilizers ((control), (Nitrogen, Phosphorus and Potassium), (Nitrogen and Phosphorus), (Nitrogen and Potassium), (Phosphorus and Potassium), (Nitrogen), (Phosphorus), (Potassium)). The effect of interaction between biochar and chemical fertilizer treatments on the concentration of silicon, phosphorus and potassium of the plant has been significant at one percent and on the concentration of plant nitrogen at five percent. Also, the effect of interaction between biochar and chemical fertilizer treatments on fresh and dry weight of the plant has been significant at one percent and on plant height at five percent. The highest concentration of Si has been gained from the treatments of mixture of rice straw biochar and nitrogen, phosphorus and potassium fertilizer, mixture of rice straw biochar and nitrogen and phosphorus fertilizer. Compared to the control, the treatments of mixture of rice straw biochar and nitrogen, phosphorus, and potassium fertilizer have had the highest concentration of nitrogen and phosphorus in the plant, increasing the concentration of nitrogen and phosphorus by 49% and 36%, respectively. The highest height and fresh weight of the plant are related to the treatments of mixture of rice straw biochar and nitrogen, phosphorus and potassium fertilizer. According to the results, the application of biochar and chemical fertilizers mixture is recommended to increase the growth and nutrient concentrations of sugarcane.