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.
maryam sadegh; Faezeh Zaefarian; Vahid Akbarpour; mostafa emadi
Abstract
In order to determine the rosemary (Rosmarinus officinalis L.) dry matter and weeds under different fertilizer sources, an experiment was conducted as a split plot in a randomized complete block design with three replications at Sari Agricultural Sciences and Natural Resources University in 2016. The ...
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In order to determine the rosemary (Rosmarinus officinalis L.) dry matter and weeds under different fertilizer sources, an experiment was conducted as a split plot in a randomized complete block design with three replications at Sari Agricultural Sciences and Natural Resources University in 2016. The treatments consisted of: competition between plants and weeds (weedy check and weed free) as the main factor, and sub factor was fertilizer sources included sheep manure, vermicompost, sheep manure + vermicompost, NPK chemical fertilizer (N 46%, P2O5 46%, K2O 50%), NPK nano fertilizer and control (no fertilizer). The results showed that interference with weeds caused rosemary shift the maximum dry matter to the upper layers of canopy (20-40 cm). While in weed free treatment, rosemary had higher ability and uniformity in dry matter distribution in the two primary canopy layers compared to competition with weeds. In this regard, vermicompost treatment was successful with a mean of 49.51 g plant-1. Studies on density and weed biomass showed that the use of vermicompost (treatment 2) reduced density and biomass of weeds, while the chemical fertilizer caused the highest weed density and biomass. The results showed that the use of organic fertilizers such as vermicompost, not only reduce the use of chemical fertilizers and do not have environmental consequences, but also have the high ability to suppress weeds growth and decrease weed density and biomass.