Wyniki wyszukiwania

1

Nitrogen accumulation by barley plants and its economy during grain filling in response to elemental sulphur application

100%

Przygocka-Cyna K., Grzebisz W.

Nawozy i Nawożenie

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2006

|

tom 08

|

nr 3[28]

2

Innowacyjne kierunki badań w rolnictwie - uwarunkowania i wybrane aspekty. Część I

100%

Grzebisz W., Przygocka-Cyna K.

Poradnik Gospodarski

|

2016

|

nr 07-08

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Effect of bio-fertilizer amendments on the concentration of elements in edible parts of radish and green bean grown in a cropping sequence

100%

Przygocka-Cyna K., Grzebisz W.

Journal of Elementology

|

2018

|

tom 23

|

nr 1

4

Aktualne problemy gospodarowania siarką w rolnictwie polskim

100%

Grzebisz W., Przygocka-Cyna K.

Nawozy i Nawożenie

|

2003

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tom 05

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nr 4[17]

5

Effect of biofertilizers on nutrient uptake by vegetables grown in a short cropping sequence

100%

Przygocka-Cyna K., Grzebisz W.

Journal of Elementology

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2018

|

tom 23

|

nr 3

6

Dolistne sterowanie plonem

100%

Przygocka-Cyna K., Grzebisz W.

Top Agrar Polska

|

2010

|

nr 03

132-134

7

Dry matter accumulation and remobilization during grain filling of malting barley in response to elemental sulphur application

100%

Przygocka-Cyna K., Grzebisz W.

Nawozy i Nawożenie

|

2006

|

tom 08

|

nr 3[28]

8

Yiels and technological quality of malting barley in response to elemental sulphur application

100%

Przygocka-Cyna K., Grzebisz W.

Nawozy i Nawożenie

|

2006

|

tom 08

|

nr 3[28]

9

Sulphuraccumulation by barley plants and its economy during grain filling in response to elementar sulphur application

100%

Przygocka-Cyna K., Grzebisz W.

Nawozy i Nawożenie

|

2006

|

tom 08

|

nr 3[28]

10

Effect of bio-fertilizer amendment on agrochemical properties of soil cropped with vegetables

81%

Przygocka-Cyna K., Grzebisz W., Lukowiak R.

Journal of Elementology

|

2018

|

tom 23

|

nr 1

11

Innowacyjne kierunki badań w rolnictwie - uwarunkowania i wybrane aspekty. Część II

81%

Grzebisz W., Przygocka-Cyna K., Piekarczyk J.

Poradnik Gospodarski

|

2016

|

nr 09

12

Evaluation of the potential of bio-fertilizers as a source of nutrients and heavy metals by means of the exhaustion lettuce test

81%

Przygocka-Cyna K., Grzebisz W., Biber M.

Journal of Elementology

|

2018

|

tom 23

|

nr 2

13

Mineral density of onion bulbs as affected by fertilizers based on elemental sulfur

81%

Przygocka-Cyna K., Biber M., Pluta M., Grzebisz W.

Journal of Elementology

|

2016

|

tom 21

|

nr 2

The yield increase of vegetables, including common onion (Alium cepa L.), is of great interest to growers. However, higher yield often leads to what is known as genetic dilution of mineral density. A technology of onion fertilization based on elemental sulfur (S0) fertilizers seems to be a simple agronomic measure preventing a decrease in the nutrient concentration in onion bulbs. To verify this hypothesis, field studies were conducted in the 2009 and 2010 seasons. A two-factorial trial consisted of five sulfur fertilizers: Sw (crude form of S0), Sm (micronized S0), SmCu (Sm enriched with copper 0.25%), SmZn (Sm enriched with zinc 0.5%), and AS (ammonium sulfate); and, as the second factor, of two doses of S: 30 and 60 kg ha-1. The NPK plot, included as an independent experimental variant, was used as the control. Yield of onion increased by 13% in response to 30 kg S ha-1, and by 44% when fertilized with 60 kg S ha-1. The yield of bulbs was significantly affected by increasing magnesium and negatively by sodium concentration. The increase in both bulb yields and dry matter content resulted in a simultaneous decrease in nutrient density, except sulfur. The strongest dilution effect was observed for sodium (-33%), iron (-19%), magnesium (-17%) and phosphorus (-16%). Such a negative development can be prevented by applying sulfur fertilizers in an appropriate form. The concentrations of N, P, K, N, and Cu responded most demonstrably to the added ammonium sulfate. The concentrations of S, Zn, Cu, Mn, and Fe were affected by the micronized form of S0 enriched with zinc. The magnesium concentration was the highest in plants fertilized with the crude form of S0.

14

The response of hydroponically grown lettuce under Mn stress to differentiated application of silica sol

81%

Kleiber T., Krzesinski W., Przygocka-Cyna K., Spizewski T.

Journal of Elementology

|

2015

|

tom 20

|

nr 3

A way to alleviate excessive Mn nutrition of plants is through silicon application. The aim of the present study was to examine the effect of different Si concentrations in a nutrient solution and Si plant spraying treatments (in the form of silica sol) on the yielding and nutritional status of hydroponically grown lettuce under Mn-stress. The experiments were conducted under controlled conditions in a phytotron. The influence of the following Si levels in the nutrient solution (5.5 – control; 15.5; 23.25 and 31 mg Si dm-3) and foliar sprays (distilled water; Si solution) were investigated. Silicon supplied through fertigation significantly affected the plant’s nutrient status and alleviated the Mn stress, increasing fresh matter production, RWC (Relative Water Content) and the number of leaves per plants, while decreasing the share of dry matter. The Si nutrition did not change the content of Mn in the leaves, but caused a significant increase in N, P, Na, Fe and Si concentrations with a simultaneous decrease of Zn and Cu levels. The content of Ca, Mg and K was relatively stable (except for the treatment with the most intensive Si nutrition). Generally, the concentrations of N, P, K, Ca, Mg, Na and Fe within the tested Si range were higher than in the control, while being lower in the case of Zn and Cu. Overall, the foliar application of Si did not change plant yielding, the number of leaves on plants and most macro- and microelement concentration in leaves, but modified significantly the RWC as well as the Cu and Na content. The dry matter content under Si nutrition was varied. In summary, an effective method to alleviate Mn-stress is to apply silica sol to a nutrient solution used for plant fertigation.

15

Magnez - efektywny kontroler azotu - produkcja roslinna i srodowisko

81%

Grzebisz W., Diatta J., Przygocka-Cyna K., Szczepaniak W.

Journal of Elementology

|

2010

|

tom 15

|

nr 3 Suppl.

36-37

16

Response of maize varieties to increasing nutrient imput on the background of natural soil fertility

81%

Szczepaniak W., Grzebisz W., Barlog P., Przygocka-Cyna K.

Nawozy i Nawożenie

|

2010

|

nr 40

17

Biomass ash and biogas digestate bio-fertilizers as a source of nutrients for light acid soil – an exhaustion test

81%

Przygocka-Cyna K., Grzebisz W., Lukowiak R., Biber M.

Journal of Elementology

|

2018

|

tom 23

|

nr 2

18

Effect of multi-micronutrient fertilizers applied to foliage on nutritional status of winter oilseed rape and development of yield forming elements

81%

Grzebisz W., Lukowiak R., Biber M., Przygocka-Cyna K.

Journal of Elementology

|

2010

|

tom 15

|

nr 3

477-491

Yields of oilseed rape harvested by farmers in Poland are usually much below the attainable potential of currently cultivated varieties, mainly because of the insufficient supply of nutrients during the yield foundation period, which determines the final number of secondary branches. This situation is typical of whole Poland, but may take place even on farms where high yields are harvested, for example in 2007. In 2006, 2007 and 2008, the year effect of multi-micronutrient fertilizers on yield of seeds, elements of yield structure and macronutrient content was studied. Multi-micronutrient fertilizers were applied twice over oilseed rape foliage during its pre-anthesis growth (BBCH45 and 53). In 2007, due to a drought in April, the harvested yields of seeds were below the country’s average. However, in each year of the study, a significant increase in the seed yield owing to the foliar application of multi-micronutrient fertilizers was found. The increase in the yield of seeds, averaged for the three years, reached 0.486 t ha–1 for the NPK+MiMo treatment (full set of micronutrients) and 0.36 t ha–1 for the NPK + Mi treatment (without molybdenum). The increments of the oilseed rape yield resulted from an increased number of developed secondary branches. This yield-forming element was an indirect result of the application of multi-micronutrient fertilizers, which affected the nitrogen economy by oilseed rape plants during the foundation period of their growth. At the same time, the increase in seed yield was significantly modified by the total number of developed pods, which is shaped during the yield-forming period of oilseed rape crop growth. Under conditions of the study, the magnesium content in secondary branches was found to be an element significantly correcting their number, thus increasing the yield of seeds.

19

Application of soil-plant transfer coefficients and plant pollution indices for evaluating heavy metal contamination within the Marcinkowski's Recreational Park (Poznan)

81%

Diatta J., Biber M., Przygocka-Cyna K., Lukowiak R.

Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu

|

2011

|

tom 05

|

nr 5

20

Rola składników pokarmowych w budowaniu mechanizmów odporności roślin uprawnych na presje patogenów

81%

Grzebisz W., Gaj R., Przygocka-Cyna K.

Progress in Plant Protection

|

2010

|

tom 50

|

nr 2

An efficient system of crop plant fertilization is a prerequisite for fulfilling backgrounds of the concept known as sustainable agriculture. A well developed, i.e., adjusted to any site specific conditions of plant production, system of plant crop fertilization should allow to reach by the cultivated plant a state of nutritional homeostasis, as a base to full expression of its resistance mechanisms to pressure of pathogenic organisms. Growth and development of crop plants is under permanent, but variable in the course of vegetation, pressure of pathogens. Plant crop response to their attack is generally a result of its genetic natural backgrounds and/or breeding progress (resistance). Plant crop variety susceptibility to disease is modified by the growth environment, affecting both i) its nutritional status and ii) pathogen’s activity. Mechanisms of plant resistance to pathogens in the course of the growing season results from development of its i) structural and ii) biochemical barriers. Protection functions of nutrients reveal at each stage of both primary and secondary barriers build-up. Plant crop growth under conditions of imbalanced nitrogen economy results in release to the external environment (rhizosphere, fyllosphere) low-molecular compounds, attracting pathogens. The main way to decrease this process is to take nitrogen metabolism under control through its balancing with potassium as the main element, following by sulfur and micronutrients. Accumulation of lignin in the cell wall as physical barrier to penetrating fungal hyphae depends on plant crop nutritional status with respect to copper, sulfur and also on silicon. A highly specific protective functions are related to calcium activity in plants body. On the one hand calcium content in the cell wall controls direct pathogen activity and on the other hand its content in the cell cytoplasm is essential for plant response to stresses, including pathogen’s attack. In the protection cascade a specific, even primary function is attributed to potassium, which controls activity of the plasma membrane located NADPH oxidizes. Increasing activity of these enzymes is a prerequisite for a rapid reactive oxygen forms (ROS) synthesis in the site of pathogen attack. It is necessary to keep in mind, that increased synthesis of primary and secondary metabolites in response to pathogen’s attack depends on availability of sulfur and micronutrients such as manganese, copper, zinc and others. However, the nutrient-induced mechanisms of plant protection can reach their full state, provide that plants are well supplied with macro- and micronutrients.

Ograniczanie wyników

Nitrogen accumulation by barley plants and its economy during grain filling in response to elemental sulphur application

Innowacyjne kierunki badań w rolnictwie - uwarunkowania i wybrane aspekty. Część I

Effect of bio-fertilizer amendments on the concentration of elements in edible parts of radish and green bean grown in a cropping sequence

Aktualne problemy gospodarowania siarką w rolnictwie polskim

Effect of biofertilizers on nutrient uptake by vegetables grown in a short cropping sequence

Dolistne sterowanie plonem

Dry matter accumulation and remobilization during grain filling of malting barley in response to elemental sulphur application

Yiels and technological quality of malting barley in response to elemental sulphur application

Sulphuraccumulation by barley plants and its economy during grain filling in response to elementar sulphur application

Effect of bio-fertilizer amendment on agrochemical properties of soil cropped with vegetables

Innowacyjne kierunki badań w rolnictwie - uwarunkowania i wybrane aspekty. Część II

Evaluation of the potential of bio-fertilizers as a source of nutrients and heavy metals by means of the exhaustion lettuce test

Mineral density of onion bulbs as affected by fertilizers based on elemental sulfur

The response of hydroponically grown lettuce under Mn stress to differentiated application of silica sol

Magnez - efektywny kontroler azotu - produkcja roslinna i srodowisko

Response of maize varieties to increasing nutrient imput on the background of natural soil fertility

Biomass ash and biogas digestate bio-fertilizers as a source of nutrients for light acid soil – an exhaustion test

Effect of multi-micronutrient fertilizers applied to foliage on nutritional status of winter oilseed rape and development of yield forming elements

Application of soil-plant transfer coefficients and plant pollution indices for evaluating heavy metal contamination within the Marcinkowski's Recreational Park (Poznan)

Rola składników pokarmowych w budowaniu mechanizmów odporności roślin uprawnych na presje patogenów