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Preparation, Characterization and Evaluation of Efficacy of Phosphorus and Potassium Incorporated Nano Fertilizer

Anjuman Ara Rajonee
Department of Soil and Environmental Sciences, University of Barisal, Barisal, Bangladesh

Shurovi Zaman
Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Sonapur, Bangladesh

Shah Muhammad Imamul Huq
Department of Soil, Water and Environment, University of Dhaka, Dhaka, Bangladesh

Abstract/ Executive Summary:

Phosphorus and Potassium incorporated nano fertilizer were prepared using zeolite as a carrier material at a laboratory scale. X-ray diffraction (XRD) analysis was done for the characterization and confirmation of the incorporation. Chemical analyses also indicate the sorption of fertilizer material into zeolite. An in vitro incubation study was conducted for 30 days at field moisture conditions to see the release of the fertilizer materials and was compared with conventional fertilizer. The release pattern of nutrients from either source showed a substantial decreasing trend with time although the release of P and K was higher for nano fertilizer than the conventional one. A pot culture experiment with Ipomoea aquatica (Kalmi) was also conducted to see the efficacy of the nano fertilizer in the growth promotion of the plant. Analysis showed higher accumulation of P and K in plants grown with nano fertilizer. Post-effect of nano fertilizer application in soil showed better pH, moisture, CEC, available P and K under nano fertilizer treatment than the conventional fertilizer.

Keywords: Nano Fertilizer, Preparation, Efficacy, P-Efficiency, K-Efficiency

Location: In Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Soil fertility

Objectives:

To observe the release characteristics of the elements from the synthesized nano fertilizer using the same categories of soil.

Methodology:

The experiment was divided into four parts: synthesis of nano fertilizer in the laboratory, physical and chemical characterization of the product, release pattern of the synthesized nano fertilizer in soil and, pot experiment with plants. Commercially available zeolite (AnalaR, BDH) was used as the carrier material. Synthesis of nano fertilizers was accomplished in two steps previously described. In case of in vitro incubation and macrocosm study, soil samples were collected from an agricultural field near the laboratory following the sample collecting procedures as described in. The geo-location of the sampling site is 23⁰53.1"47'N and 90⁰24.8"09'E. The processing and preservation of the soil samples were done according to. A leafy vegetable commonly known as Kankong (Ipomoea Aquatica) was used for pot culture experiment. Control, conventional fertilizers and the synthesized nano-fertilizer were the treatments. For conventional fertilizer TSP and MOP were used. The amounts of each nutrient from either source were kept at the same level. Around 2 kg sizes pots were used. The fertilizer requirement was assessed following the Fertilizer Recommendation Guide of BARC. The soils in each pot were mixed with the required amounts of fertilizer except for control. The pots were arranged in a completely randomized design and were set in a net house. Kangkong seeds (6-7) were sown in each of the pots and allowed to germinate. After germination, 4 seedlings were kept in each pot. Plants were watered every day. Watering was done by using tap water; intercultural operations were carried out whenever it was necessary. The plants were harvested carefully by uprooting them after 30 days of emergence. Processing and preparation of the plant samples were done as in. Various physical, chemical and Physico-chemical properties of the soil samples were analyzed as in [10]. After harvesting, the soils were again analyzed to monitor the effect of nano fertilizer on soil after a period of time. In-vitro incubation study was done to observe the release characteristics of the elements from the synthesized nano fertilizer using the same categories of soil. 250 gm of 5 mm sieved soil was used for the study. The procedure followed is similar to what has been described in. The period of incubation was 0, 15 and 30 days. Analytical procedures followed were as described earlier. All data were statistically analyzed by using Microsoft Excel and MINITAB (version 17) packages.

Source of Information: Advances in Nanoparticles, 2017, 6, 62-74; ISSN Online: 2169-0529

Article Link (Online Journal): http://www.scirp.org/journal/anp

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The growth of Kalmi, its uptake and concentration of phosphorus (P) and potassium (K) were better in nano fertilizer treatments than in the conventional fertilizer treatments indicating the fact that there is a bright possibility of nano-fertilizer in agriculture. Using this in the farmers’ level, however, will need pilot-scale synthesis of the fertilizer. Assessment of cost-effectiveness is a matter of concern. In case of Potassium containing nano fertilizer, further experiments can be done using different carriers.

Knowledge Management: Journal