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- 저자 : Molnár Zoltán (검색결과 3 건)
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Response of wheat to combined application of nitrogen and phosphorus along with compost
Kabato Wogene,Ergudo Tagesse,Mutum Lamnganbi,Janda Tibor,Molnár Zoltán 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.5
To achieve food security and increase crop productivity in a sustainable way, keeping soil fertile and balanced fertilization is vital. Soil fertility declining and unbalanced fertilization is one of the bottlenecks to sustainable agricultural production. To overcome these problems, a field experiment was investigated, with the aim of exploring the potential of organic and inorganic nutrient sources with their optimal application and integration for sustainable wheat production. The experiment was conducted in a factorial approach with three replications, where one factor was the level of the NP (Nitrogen and Phosphorus) fertilizer and the other compost, set in a randomized complete block design. Four levels of the N:P fertilizer (control, 27.6%:18.4%, 41.4%:32.2% and 55.2%:46%) were combined with three levels of compost (0, 3 ton/ha and 6 ton/ha), giving 12 treatments combination. From the data collected and analyzed, integrated application of the NP fertilizer and compost significantly increased soil organic carbon, total nitrogen, and available phosphorus but had no effect on soil pH and cation exchange capacity (CEC). Application of 6 ton/ha compost was higher with plant height, spike length, number of seeds per spike, 1000 seeds weight, and biological yield. The sole application of the NP (55.2%:46%) produced (6.19 ton/ha) grain yield whereas combined application of the NP (55.2%:46%) along with the compost (6 ton/ha) produced the higher grain yield (8.16 ton/ha). This clearly revealed that application of 75% recommended inorganic NP fertilizers combined with compost resulted in increased wheat yield by 27.45% over sole application of inorganic fertilizer indicated that the integrated approach could enable to save up to 25% of commercial fertilizers and increase the yield of wheat.
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Kabato Wogene,Ergudo Tagesse,Mutum Lamnganbi,Janda Tibor,Molnár Zoltán 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.5
In order to achieve food security and increase crop productivity in a sustainable way; keeping soil fertile and balanced fertilization is vital. Soil fertility declining and unbalanced fertilization is one of the bottlenecks to sustainable agricultural production. To overcome these problems, a field experiment was conducted, with the aimed to explore the potential of organic and chemical nutrient sources with their optimal application and integration for sustainable wheat production. The experiment was conducted with twelve treatment combinations in a factorial approach with three replications, where one factor was the level of NP (Nitrogen and Phosphorus) fertilizer and the other compost, set in a randomized complete block design. The treatments were used four levels application of nitrogen and phosphorus fertilizer (NP) (0-0, 60-40, 90-70 and 120-100 kg/ha), three levels application of compost (0, 3 and 6 ton/ha). From the data collected and analyzed, results showed that there are significant differences among the compost application in all wheat yield and its component except harvest index. Application of 6 ton/ha compost was higher with plant height, spike length, number of seeds per spike, 1000 seeds weight, and biological yield. The sole application of NP (120-100 kg/ha) produced (6.19 ton/ha) grain yield whereas combined application of NP (120-100 kg/ha) along with compost (6 ton/ha) produced the higher grain yield (8.16 ton/ha). This clearly revealed that the combined application of NP and compost increase wheat yield by 27.45% over sole application of NP. The integrated application of organic and inorganic fertilizer increases the effectiveness of chemical fertilizer and enhances crop productivity.
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Pá,linká,s, Andrá,s,Molná,r, Gyö,rgy,Magda, Gá,bor Zsolt,Hwang, Chanyong,Tapasztó,, Levente,Samuely, Peter,Szabó,, Pavol,Osvá,th, Zoltá,n Elsevier 2017 Carbon Vol.124 No.-
<P>The development of functional composite nanomaterials based on graphene and metal nanoparticles (NPs) is currently the subject of intense research interest. In this study we report the preparation of novel type of graphene/Sn and graphene/SnOx (1 <= x <= 2) hybrid nanostructures and their investigation by scanning probe methods. First, we prepare Sn NPs by evaporating 7-8 nm tin on highly oriented pyrolytic graphite substrates. Graphene/Sn nanostructures are obtained by transferring graphene on top of the tin NPs immediately after evaporation. We show by scanning tunnelling microscopy (STM) and spectroscopy (STS) that tin NPs reduce significantly the environmental p-type doping of graphene. Furthermore, we demonstrate by low-temperature STM and STS measurements that superconductivity is induced in graphene, either directly supported by Sn NPs or suspended between them. Additionally, we prepare SnOx NPs by annealing the evaporated tin at 500 degrees C. STS measurements performed on hybrid graphene/SnOx nanostructures reveal the electronic band gap of SnOx NPs. The results can open new avenues for the fabrication of novel hybrid superconducting nanomaterials with designed structures and morphologies. (C) 2017 Elsevier Ltd. All rights reserved.</P>
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