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1

Influence of maize hybrid type (Zea mays l.) and N dose on nitrogen eutrophication of the environment

100%
Szulc P., Rybus-Zalac M., Jagla M.
Electronic Journal of Polish Agricultural Universities. Series Agronomy
|
2015
|
tom 18
|
nr 2
2
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Effect of catch crop and cultivation intensity on the health of spring barley

100%
Lemanczyk G., Wilczewski E.
Acta Scientiarum Polonorum. Agricultura
|
2019
|
tom 18
|
nr 3
3
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The effect of the soil tillage methods for forecrop and N-mineral fertilization on the yield of winter triticale (x Triticosecale sp. Wittmack ex A. Camus 1927)

100%
Prusinski J., Borowska M., Majcherczak E.
Agronomy Science
|
2022
|
tom 77
|
nr 3
4

Effect of increasing nitrogen doses and harvest terms on the quantitative and qualitative parameters of sweet basil [Ocimum basilicum L.]. Part II

100%
Golcz A., Markiewicz B.
Herba Polonica
|
2002
|
tom 48
|
nr 3
It was demonstrated that the content of essential oil in sweet basil depends on the level of nitrogen nutrition and on the term of herb harvest. The greatest content of the essential oil was found in herb harvested at the beginning of blooming using 0.9 g N/plant (0.6 g N pre-vegetation + 0.3 g N after the first harvest). After the fertilization levels: 0.9 g N and 1.2 g N/plant, the leaves of basil cv. Wala were characterized by the most desired aromatic discriminants: basil-like, sharp, spicy and herb-like.
5
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Influence of nitrogen dose and harvesting date on the yield and biological value of raw garden savory (Satureja hortensis L.) of Saturn cv

84%
Skubij N., Dzida K.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2019
|
tom 18
|
nr 1
Garden savory (Satureja hortensis L.) is an aromatic spice plant commonly used in the food and pharmaceutical industries. Biological value of this plant is influenced by biotic and abiotic conditions, which include fertilization and date of harvesting. The research was aimed at determining the effect of differentiated nitrogen fertilization (nitrogen doses 0, 4, 8, 12, 16 g·m–2) and different harvesting time (initial flowering and full flowering phase) on yield of fresh plant weight, yield of essential oils, dry matter, protein, L-ascorbic acid contents in the raw material of garden savory of Saturn cv. The highest yield of fresh mass and essential oil was recorded in the herb harvested in the initial flowering phase after applying the highest doses of nitrogen. The obtained results allow to conclude that the greatest influence on the content of L-ascorbic acid in the herb had a dose of 4 g N∙m–2 in both examined dates. The highest amount of protein and dry matter was found in savory raw material after applying the highest dose of nitrogen in the full flowering phase.
6

Effect of nitrogen and zinc fertilizing on bread-making quality of spring triticale cultivated in Notec Valley

84%
Knapowski T., Ralcewicz M., Barczak B., Kozera W.
Polish Journal of Environmental Studies
|
2009
|
tom 18
|
nr 2
227-233
In our studies the highest mean significant yield of spring triticale grain of the Kargo variety was obtained following the application of 120 kg N·ha⁻¹ and after the foliar application of the highest dose of zinc, as compared to the examined lower levels of fertilization. The used variable fertilization with nitrogen applied to the soil and the foliar application of zinc, on average, resulted in a significant increase in the content of total protein in spring triticale grain of the Kargo variety. The values of the most important baking indices determined for spring triticale manifested growing tendencies within the entire range of the applied doses of nitrogen and zinc. On average, the highest significant content of wet gluten was obtained following the application of 120 kg N·ha⁻¹, and of the highest dose of zinc as compared to, respectively, the dose of 80 kg N·ha⁻¹ and to control.
7

Effects of differentiated levels of nitrogen fertilization and the method of magnesium application on the utilization of nitrogen by two different maize cultivars for grain

84%
Szulc P.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 2
407-412
A field experiment was carried out at the Didactic and Experimental Farm in Swadzim near Poznań in 2004-07. Two maize cultivars were studied, six nitrogen doses and magnesium doses. The effects of the mentioned factors exerted on the utilization of nitrogen from the applied mineral fertilizer and on the nitrogen harvest index were studied. The impact of nitrogen fertilization on the mineral intake of traditional maize cultivars has been widely presented in national and foreign literature. However, there are a limited number of papers comparing the volume of mineral intake and use between the traditional and the “stay-green”-types of cultivars. Moreover, according to the “minimum” principle, the component most deficient in the soil determines harvest volume. Magnesium is obviously one of the ingredients whose deficiency has been found in most of the soils in Poland, and this justifies research focusing on improving the precision of the technology concerning “stay-green”-type maize cultivar fertilization with nitrogen and magnesium, including the environmental aspects. The hybrid LG 2244 “stay-green”-type utilized to a higher degree nitrogen from the applied mineral fertilizer and showed a higher nitrogen harvest index, as compared with a traditional hybrid cultivar: Anjou 258. Increasing levels of nitrogen fertilization decreased N utilization by the plants and the nitrogen harvest index. The application of 15 kg Mg・ha⁻¹ both broadcast and in rows caused increased nitrogen utilization from the mineral fertilizer, which was distinctly shown by the smaller amount of Nmin in the soil after the maize harvest.
8
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The effect of different nitrogen fertilization doses on lead and cadmium accumulation and translocation in yellow lupine

84%
Wysokinski A.
Acta Scientiarum Polonorum. Agricultura
|
2019
|
tom 18
|
nr 3
9
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Influence of nitrogen doses on the chemical composition and proportions of nutrients in selected vegetable species

84%
Pitura K., Michalojc Z.
Journal of Elementology
|
2015
|
tom 20
|
nr 3
The experiments on celery, curly kale and lettuce reported in this paper were carried out in a greenhouse, with plants grown in 2 dm3 pots filled with peat substrate. The trials were established in a completely randomized design. The aim was to determine the effect of increasing nitrogen doses (0.3, 0.6, 0.9, 1.2 g N dm-3 of substrate) on N-tot., NO3-N, concentrations of P, K, Ca, Mg, Fe, Zn, Mn and Cu as well as ratios between these elements in three vegetable species such as curly kale, lettuce, and celery, distinguished by different degrees of sensitivity to salinity. An increase in the content of total nitrogen and NO3-N in lettuce, curly kale and celery appeared to be parallel to the increasing doses of nitrogen, while the average total nitrogen content was similar in all the tested species, and the content of N-NO3 in kale was about five-fold lower than in lettuce and celery. The level of nitrogen fertilization influenced the content of potassium and magnesium in lettuce as well as the content of phosphorus, potassium, calcium and magnesium in celery. The nitrogen doses significantly differentiated proportions between the nutrients in plants, mostly the K:Mg and Zn:Cu ratios. The increasing doses of nitrogen modified the content of microelements and proportions between various components in the tested plant species.
10

Interval estimation of economically optimal nitrogen dose

84%
Kobus P.
Electronic Journal of Polish Agricultural Universities. Series Economics
|
2011
|
tom 14
|
nr 4
11
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The effect of the period of weed control and differentiated nitrogen fertilization on yielding of white head cabbage

84%
Kolota E., Chohura P.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2008
|
tom 07
|
nr 1
In the field experiment with cabbage cv. ‘Menza F1’ fertilized with 150 and 250 kg N·ha⁻¹, the first weeding started 3, 6, 9, 12 weeks after transplanting, including unweeded control. Higher dose of nitrogen especially in treatments with delayed weed control affected in significant increase of marketable yield, as well as the mean weight of cabbage heads in comparison to the dose of 150 N·ha⁻¹. The highest yielding was recorded in treatment where the first weeding was conducted 3 weeks after transplanting. The delay of this operation to 6, 9, and 12 weeks after transplanting caused the decrease in marketable yield by 16.0%, 33.1% and 48.4%, respectively. The dose of 250 N·ha⁻¹ contributed to the slight decrease of dry matter, total and reducing sugar contents, and higher accumulation of nitrates in edible parts of cabbage heads. Late start of weed removal was disadvantageous for dry matter and sugars content and caused higher nitrates accumulation in cabbage.
12

The effect of nitrogen form and dose on yield, chemical composition and antioxidant activity of stinging nettle [Urtica dioica L.]

84%
Biesiada A., Woloszczak E., Sokol-Letowska A., Kucharska A. Z., Nawirska-Olszanska A.
Herba Polonica
|
2009
|
tom 55
|
nr 3
84-93
The purpose of the investigation was the assessment of the effect of fertilization with different form and dose of nitrogen as well as harvest term on yield, chlorophyll, carotenoids and polyphenols content, and antioxidant activity of stinging nettle (Urtica dioica L.) leaves. The lowest total yield obtained from three-year-lasting plantation resulted from preplant fertilization with lime saltpeter. The highest yield of raw material was provided by nitrogen fertilization in the dose of 150 kg N/ha. Total content of polyphenols in nettle leaves collected in May amounted, counted over gallic acid, 7.13–9.46 mg∙g-1 d.m. and was by 40–50% higher than that assayed in July. Chlorophylls (7.72–9.63 mg∙g-1 d.m.) and carotenoids (0.74–0.96 mg∙g-1 d.m.) content was lower in May by 20–40% than the one in nettle leaves collected in July. In the course of effect of nitrogen preplant fertilization plants accumulated higher amounts of polyphenols when treated with N saltpeter form. Increased nitrogen dose from 50 to 150 kg N∙ha-1 contributed to the increase in chlorophyll and carotenoids content in nettle leaves and, to a lower degree, to differentiating polyphenols level. Harvest term did affect antioxidant activity of raw material more significantly than nitrogen form and dose used in the experiment. Raw material collected in May characterized higher antioxidant activity measured according to FRAP and ABTS.
13
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Influence of different forms of nitrogen fertilization on the content of macroelements [Ca, Mg] in meadow sward. Part II

84%
Kolczarek R., Ciepiela G. A., Jankowska J., Jodelka J.
Journal of Elementology
|
2008
|
tom 13
|
nr 3
Foliar fertilization is not a new application method, especially with respect to field crops. However, little information is available regarding foliar fertilization of grasses. This paper contains a presentation of guidelines for rational fertilization of permanent meadow through delivery of nitrogen doses applied in various forms. The study was conducted near Siedlce in 1999-2001. Basic fertilization was applied once in the growing period, in the spring, introducing to the soil the following quantities of nutrients: N–60 kg⋅ha-1, P–60 kg⋅ha-1, K–60 kg⋅ha-1. The fertilizers were used in two forms: multiple (Polifoska 15) [P] and a mix of fertilizers (ammonium nitrate, superphosfate, potasic salt) [M]. Under the second and third cut of grass, additional nitrogen nutrition was applied on the experiment plots, as foliar or soil fertilization treatments. The following nitrogen doses were used (in kg⋅ha-1): 27.6 (N1), 41.4 (N2), 55.2 (N3). Every year, three cuts were collected for determination of the content of calcium and magnesium. The fertilization variants modified the content of calcium in sward. The concentration of calcium increased from 8.4 to 9.0 g kg-1 d.m. only under the influence of increasing doses of nitrogen applied in the liquid form against the background of the multiple fertilizer. While analysing the content of calcium in plants in dependence of the applied doses and method of supplementary nitrogen fertilization, it was found out that most calcium was in plants from plots foliar fertilized with a nitrogen dose of 55.2 kg⋅ha-1 (N3). The lowest calcium level was in grass fertilized with 41.4 kg N⋅ha-1 (N2) applied to soil. The content of magnesium in sward was high: on average 3.0 g⋅kg-1 d.m. in grass fertilized with the multiple fertilizer and 3.1 g⋅kg-1 d.m. in grass receiving a mixture of single-component fertilizers.
14

Effect of increasing nitrogen doses and harvest terms on the growth and development of sweet basil [Ocimum basilicum L.]. Part I

84%
Golcz A., Seidler-Lozykowska K., Markiewicz B.
Herba Polonica
|
2002
|
tom 48
|
nr 2
Wzrastające nawożenie azotowe miało istotny wpływ na plon ziela bazylii wonnej (Ocimum basilicum L.). Najwyższy plon liści, łodyg oraz ziela uzyskano stosując dawkę 1.8 g N/roślinę (1.2 g przedwegetacyjnie + 0.6 g N/roślinę po I zbiorze). Plony zebrane w II terminie były wyższe od plonów z I terminu.
15
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Influence of different forms of nitrogen fertilization on the content of macroelements [K, Na] in meadow sward. Part I

84%
Kolczarek R., Ciepiela G. A., Jankowska J., Jodelka J.
Journal of Elementology
|
2008
|
tom 13
|
nr 3
Present intensification of plant production rises a need to search for new solutions, such as novel fertilization technologies which reduce environmental pollution. The aim of this work has been to examine principles of rational fertilization of permanent meadows, including delivery of nitrogen doses applied in various forms. The investigations were led in the region of Siedlce in 1999-2001. Basic fertilization was applied once during the growing season, in spring, and consisted of N–60 kg⋅ha-1, P–60 kg⋅ha-1, K–60 kg⋅ha-1 applied to soil. The fertilizers were used in two forms: multiple (Polifoska 15) [P] and a mix of fertilizers (ammonium nitrate, superphosphate, potassium salt) [M]. Nitrogen fertilization of the second and third cuts was conduced as various foliar (20%, 30%, 40% urea solution) or soil (ammonium nitrate). The doses of nitrogen in respective variants were 27.6 kg⋅ha-1 (N1), 41.4 kg⋅ha-1 (N2) and 55.2 kg⋅ha-1 (N3). Every year three cuts for determination of potassium and sodium were collected. Fertilization of the experimental objects with the multiple fertilizer resulted in increasing plants’ potassium content whereas the mixture of fertilizers increased the quantity of sodium in plants. Foliar fertilization with nitrogen in the form of urea solution gave a higher increase in the plants’ content of potassium and sodium than fertilization to roots with ammonium nitrate (independently on the basic fertilization). By analysing the content of potassium in plants in dependence of the doses as well as the kind of supplementary nitrogen fertilization, it has been verified that most of this component was determined in plants treated with foliar fertilization consisting of 55.2 kg N⋅ha-1 (N3), the lowest potassium concentration occurred in plants receiving foliar fertilization with dose 41.4 kg N⋅ha-1 (N2). The analysis of the sodium content in plants in dependence of the doses and type of supplementary nitrogen fertilization showed that most potassium was in plants produced on the plots receiving foliar fertilization with a nitrogen dose of 27.6 kg⋅ha-1 (N1), and the least potassium was determined in plants nourished with 41.4 kg N⋅ha-1 (N2) applied to soil.
16

Effect of growth regulators and increasing nitrogen doses on calcium and magnesium balance in spring wheat

84%
Wierzbowska J., Nowak G. A.
Polish Journal of Natural Sciences
|
2003
|
tom 13
17
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Content available

The effect of nitrogen fertilization and irrigation on yielding and nutritional status of sweet basil (Ocimum basilicum L.)

67%
Biesiada A., Kus A.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2010
|
tom 09
|
nr 2
Sweet basil (Ocimum basilicum L.) is an annual plant belonging to the plant family Lamiaceae. There are many varieties of basil, with leaves of colour from green to purple and with small white or pink flower. In field experiment conducted in the years 2007–2008 there was investigated the effect of nitrogen fertilization in the doses of 50, 150 and 250 kg N·ha-1and irrigation on yielding and nutritional status of basil of ‘Red Rubin’ cultivar grown from transplants. Basil positively responded to irrigation and the increase in its yield under the influence of irrigation amounted from 97.37% to 25.36% in subsequent years of cultivation. Also the dose of nitrogen did advantageously affect basil herb yield. The highest yields were recorded at the dose of 150–250 kg N·ha-1. The highest amount of nitrates ranged from 697.00 to 938.00 mg·kg-1 f.m. was determined in plants fertilized with nitrogen dose of 250 kg N·ha-1. The level of macroelements depended both on irrigation and on nitrogen doses. Irrigation caused decreased amounts of phosphorus, potassium and calcium, while content of magnesium increased. The highest quantities of phosphorus and magnesium were obtained at nitrogen dose of 150 kg N·ha-1, while for the highest values of potassium and calcium nitrogen dose was 250 kg N·ha-1.
18

Content of chloroplast pigments and anthocyanins in the leaves of Ocimum basilicum L. depending on nitrogen doses

67%
Politycka B., Golcz A.
Folia Horticulturae
|
2004
|
tom 16
|
nr 1
23-29
19

Nawozenie roztworem saletrzano-mocznikowym. Jak stosowac w zbozach jarych

67%
Sztuder H., Swierczewska M.
Agrochemia
|
2000
|
nr 02
20-22
20

Cost evaluation of the application of the differentiated nitrogen doses on winter wheat field

67%
Jarosz Z., Igras J., Pudelko R., Kubsik K.
Polish Journal of Agronomy
|
2010
|
nr 02
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