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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Changes in the content of structural carbohydrates and lignin in the biomass of Lolium multiflorum (Lam.) after applying slurry with biopreparations and with NPK

100%
Wisniewska-Kadzajan B., Jankowski K.
Acta Scientiarum Polonorum. Agricultura
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2019
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tom 18
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nr 4
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The influence of long-term fertilization with slurry, manure and NPK on the soil content of trace elements

100%
Mazur Z., Mazur T.
Journal of Elementology
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2016
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tom 21
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nr 1
Long-term application of fertilizers can change the chemical composition of the soil environment. Our objective has been to determine total amounts of trace elements (Cu, Mn, Zn, Cd and Pb) in the top layer of soil after 34 years of annual applications of organic and mineral fertilizers. The first experiment was set up in 1972 on lessive soil, while the second one was started in 1973 on brown soil. The same crops were grown in both experiments. Bovine manure and slurry were applied in the first experiment, while the other one involved the application of swine manure and slurry. Slurry was applied at two different doses. One dose of slurry was applied together with manure and mineral fertilization in amounts balanced according to nitrogen. The other dose of slurry was determined so that it brought to soil the same amount of organic carbon as introduced with a manure dose. Manure and slurry were also applied in combination with phosphorus and potassium fertilizers in amounts equal half the content of these components used delivered through exclusive mineral fertilization. The total metal content was assessed using the atomic absorption spectrometry method, with prior mineralization in a 1:1 mixture of nitric and chloric acid. The application of fertilizers over many years increased the content of trace elements. The actual effect varied between the analyzed soil types, depending also on the type of fertilizer and the dose of slurry. The average content of Cu, Cd and Pb was 13.8% higher in lessive than in brown soil, while the amount Mn was lower by as much as 32.7%. Among the doses balanced with respect to nitrogen, the effect of manure caused an increase in the Mn, Zn and Ni content in lessive soil, as well as Cu and Pb in brown soil compared to the application of the slurry dose balanced with manure according toorganic carbon. Mineral fertilizers did not increase the content of the analyzed metals as much as manure, with the exception of Cu and Pb in lessive soil and Ni in brown soil.
3
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Impact of multi-annual mineral fertilization with NPKCa on the content and uptake of magnesium by eastern galega

84%
Symanowicz B., Kalembasa S., Niedbala M.
Journal of Elementology
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2015
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tom 20
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nr 4
This paper presents the changes in the magnesium content in soil and plants and in the uptake of this element in yield under the influence of NPKCa fertilization. Eastern galega (Galega orientalis Lam.) was cultivated in 2005-2009. A field experiment was conducted on the experimental plots of the Siedlce University of Natural Sciences and Humanities. Thirteen levels of fertilization were included in the study: without fertilization, N20, P50, K150, N20P50K150, N20P50, N20K150, P50K150, N20P50K150Ca150, P50K150Ca150, Ca150, N20K150Ca150, N20P50Ca150. Three swaths of the test plants were harvested at budding in each year of the study. The total content of magnesium in soil and in plants was determined with the ICP-AES method on an emission spectrophotometer with inductively-coupled plasma. The applied mineral fertilization with NPKCa did not have any significant impact on the average magnesium content in soil. The highest (significantly) content of magnesium was determined in eastern galega biomass harvested from the plots fertilized with Ca150 as dolomite calcium in all years of the experiment (the mean for the years: 2.91 g kg-1 d.m.). The average content of Mg in the subsequent swaths was as follows (in g kg-1 d.m.): swath I (2.04) < swath II (3.23) > swath III (2.39). The determined content of magnesium in eastern galega in the subsequent years of the experiment ranged between 2.22 g kg-1 d.m. in 2006 and 2.83 g kg-1 d.m. in 2008. The highest uptake of magnesium in eastern galega yield (73.78 kg Mg ha-1) was recorded on a plot fertilized with N20P50Ca150 in 2008.
4
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Response of the yield and mineral composition of garden thyme (Thymus vulgaris L.) herbage to various NPK proportions

67%
Kozera W., Majcherczak E., Barczak B., Knapowski T., Wszelaczynska E., Poberezny J.
Journal of Elementology
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2015
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tom 20
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nr 4
Garden thyme is a very important essential herbal plant grown in Poland. As well as being able to regulate digestion processes, thyme herbage possesses disinfecting, expectorant, antioxidant, spasmolytic properties. Research has been launched to define the effect of NPK fertilisation on yielding, the content of essential oil as well as the mineral composition of garden thyme (Thymus vulgaris L.) herbage. The experimental factor consisted of NPK mineral fertilisation applied into soil at the following doses per hectare and proportions: A0 – without mineral fertilisation, A1 – 30 kg N + 22 kg P + 100 kg K (N:P:K was: 1:0.75:3.33), A2 – 60 kg N (30 kg N + 30 kg N) + 22 kg P + 100 kg K (1:0.37:1.67), A3 – 90 kg N (45 kg N + 45 kg N) + 22 kg P + 100 kg K (1:0.24:1.11). The experiment comprised 4 fertilisation objects with 4 replications, and the sowing area and the harvest area of 3 m2 plot-1. Nitrogen was applied in the form of ammonium nitrate twice: pre-sowing as well as after plant emergence. Phosphorus and potassium were used pre-sowing, in the form of triple superphosphate 40% and 60% of potassium salt, respectively. The doses of 152 kg NPK ha-1 (1:0.75:3.33) – A1 and 182 kg NPK ha-1 (1:0.37:1.67) - A2 showed the most favourable effect on the yield of fresh weight, air-dried weight and essential oil of herbage as well as the quality characteristics of the yields. The dose of 152 kg NPK ha-1 (A1), including 30 kg less nitrogen, was as favourable as that of 182 kg NPK ha-1 in terms of the content of air-dry weight of herbage, essential oil as well as mineral nutrients. Its application also resulted in a similar yield of essential oil. The application of 212 kg NPK ha-1 (1:0.24:1.11) was economically unjustified since, in general, it decreased the size of the yield of fresh weight of herbage and the values of its parameters studied.
5
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Evaluation of spent mushroom substrate, mineral NPK fertilization and manure fertilization on chamomile (Chamomilla recutita L. Rausch) yield and raw material quality

67%
Kwiatkowski C. A., Harasim E., Yakimovich A., Kolodziej B., Tomczynska-Mleko M.
Acta Scientiarum Polonorum. Hortorum Cultus
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2018
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tom 17
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nr 3
The aim of this experiment was to determine the effect of spent mushroom substrate (SMS), manure and mineral fertilization with nitrogen, phosphorus and potassium on chamomile (Chamomilla recutita L. Rausch) yield and raw material quality. Unfertilized chamomile plots were the control treatment. This study hypothesized that due to its high content of organic matter and macro- and micronutrients, SMS could be an alternative and innovative method of fertilization of this herbal plant. Given that the possibility of using organic fertilization is very limited, we should seek new methods to increase the organic matter content in cultivated soils. A three-year field experiment with a split-block design was conducted on podzolic soil under the climatic conditions of the central Lublin region (Poland). SMS used in this experiment was richer in dry matter and total nitrogen, but less rich in total organic carbon, phosphorus and potassium than farmyard manure. In each year of the study, the highest total yield of chamomile raw material was recorded in the treatment with SMS supplemented with mineral NPK fertilization in spring. The above-mentioned treatment also proved to be most beneficial for the majority of the analyzed quality parameters of the chamomile raw material. It was proved that due to fertilization of a chamomile plantation with SMS, herbal raw material characterized by the best health-promoting parameters (a high content of natural antioxidants) can be obtained.
6
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Influence of varying rates of fertilizers on the performance of cacao (Theobroma cacao) seedlings in the nursery

67%
Famuwagun I. B., Oladitan T. O.
International Letters of Natural Sciences
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2016
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tom 58
Effects of application of poultry manure, organo-mineral fertilizer, NPK soil or foliar applied at varying rates on cacao seedlings were studied in the nursery between January-May 2011 and December to April, 2012. Poultry manure at 40, 50 and 60g/plant significantly influenced cacao seedlings height and number of leaves over other treatments. The effect of organo-mineral fertilizer application at 50 and 60g per plant on the number of leaves was also significantly better than NPK soil or foliar applied, starting from 12 weeks after treatment application. The stem girth development under poultry manure at 50 and 60g per plant application had the best performance followed by poultry manure at 40g per plant. There were no significant differences in almost all the treatments at 5 weeks after sowing on seedlings stem girth. NPK has the longest tap root length while poultry manure had the largest average number of lateral roots followed by organo-mineral. The results thereby indicated that the use of poultry manure at 40 to 50g per plant and organomineral fertilizer as sources of nutrients had significant effects on cacao seedling quality.
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