Wyniki wyszukiwania

1

Balance of magnesium under different fertilization systems in a long-term fertilization experiment on sandy soil

100%

Rutkowska B., Szulc W., Labetowicz J.

Journal of Elementology

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2005

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tom 10

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nr 4 Suppl.1

88-89

2

Leaching of sulphur from light textured soils

75%

Tripolskaja L., Marcinkonis S.

Nawozy i Nawożenie

|

2004

|

tom 06

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nr 1[18]

3

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Some aspects of integrated plant nutrition in orchards

75%

Szucs E.

Acta Scientiarum Polonorum. Hortorum Cultus

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2005

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tom 04

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nr 1

Results of our experiments are interpreted according to fertilizing system developed by long-term experiments and investigations. The potassium fertilization and favourable N/K ratio can increase the frost tolerance of generative organs of fruit trees to some extent. The effect of suitable growing site can surpass the effect of fertilizers. Frequently, the increase of phosphorus and potassium levels in the soil and leaves are relatively small comparing to amount of fertilizers, because of the strong fixation in the fertilized soil layer and – in other cases – leaching from root zone. Main soil characters should be taken into consideration to determine the favourable phosphorus, potassium levels in the soil. The excess of lime can be compensated by potassium fertilization to some extent, but on acid soils the NPK fertilization may be more effective – or effective at all – following lime or dolomite application.

4

Content of copper, iron, manganese and zinc in typical light brown soil and spring triticale grain depending on a fertilization system

63%

Wojtkowiak K., Stepien A., Warechowska M., Raczkowski M.

Journal of Elementology

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2014

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tom 19

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nr 3

The impact of mineral fertilization with or without multi-component fertilizers on the content of microelements in soil and spring triticale grains was investigated in field trials, in 2009-2011. The experiment was carried out on 8 fertilizing treatments with three replications, which included two varieties of spring triticale: Andrus and Milewo. The content of available zinc and manganese was higher on plots cropped with the cultivar Andrus and nitrogen fertilization with urea or with urea and ammonium nitrate. It was also found out that the content of available manganese, zinc and iron in the analyzed soils was within the natural average range. A higher content of manganese and zinc in grains was detected after the application of multi-component fertilizers. Nitrogen fertilization at a dose of 120 kg.ha-1 together with Azofoska and Ekolist resulted in an increase in the iron content in cv. Andrus. The regression analysis between the content of the analyzed microelements in soil and in triticale grains revealed a significant increase in the iron, manganese and zinc content in grains together with an increase in the content of these elements in soil under cv. Milewo. With respect to the zinc content in soil and in grain from this variety, the coefficient of determination was the closest to the coefficient of a linear correlation (R2 = 0.9105). It was shown that an increase in the content of microelements in soil was not always accompanied by an increase in the content of these elements in spring triticale grains.

5

An economic assessment of different fertilization systems in the cultivation of potato for industrial processing

63%

Bogucka B., Winnicki T.

Acta Scientiarum Polonorum. Agricultura

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2016

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tom 15

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nr 4

This paper presents calculations based on results of a field experiment, in which selected potato cultivars grown for industrial processing received different fertilization. The data originated from trials on three potato cultivars: Adam, Pasja Pomorska and Ślęza, at set up at the Research Station in Bałcyny, owned by the University of Warmia and Mazury in Olsztyn, and completed in 2008-2010. The economic analysis included planned and performed treatments as well as such information as the type of technical equipment, labour and draught force input, or material outlays. Based on the analysis, it can be concluded that the three starch potato cultivars responded differently to foliar fertilization. The cv. Pasja Pomorska yielded the highest under soil fertilization with 280 kg·haˉ¹ NPK (80 N, 80 P, 120 K) and foliar application of Basfoliar 12-4-6 in a dose of 8 dm3·haˉ¹. Considering the ratio of the yields to costs, cv. Ślęza was characterized by the best profitability index, which in every technological variant reached a value of over 2.0. From the point of view of rational economy, the most profitable was the fertilization combination which consisted of soil fertilization with 420 kg·haˉ¹ NPK (120 N, 144 P, 156 K) and foliar application of Basfoliar 12-4-6 with Solubor DF in amounts of 4 + 1 dm³·haˉ¹.

6

Właściwości technologiczne surowca buraczanego produkowanego w zmodyfikowanej technologii nawożenia

63%

Bzowska-Bakalarz M., Banach M.

Acta Agrophysica

|

2009

|

tom 14

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nr 1[170]

W pracy przedstawiono ocenę wpływu modyfikacji systemu nawożenia buraków cukrowych na zawartość sacharozy, technologiczny plon cukru, współczynnik alkaliczności i teoretyczny wydatek cukru. Doświadczenie prowadzono w dwu etapach (dwu latach) w trzech gospodarstwach. Uzyskano lepsze właściwości technologiczne na obszarze o zmodyfikowanym nawożeniu (niższe dawki azotu, nawożenie mikroelementami, dobór dawek nawozów oparty na analizach gleby). Największy, istotny wpływ na badane parametry miały warunki meteorologiczne ale zarejestrowano także istotny wpływ odmiany i poziomu technologicznego uprawy buraków.

7

Warunki meteorologiczne a plony jęczmienia jarego w zależności od rodzaju nawożenia

51%

Mazur T., Grabowski J.

Acta Agrophysica

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2008

|

tom 12

|

nr 2[162]

8

Plonowanie pszenżyta ozimego odmiany Woltario w zależności od gęstości siewu i sposobu nawożenia azotem

51%

Jaskiewicz B.

Acta Agrophysica

|

2009

|

tom 13

|

nr 3[168]

9

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

51%

Jarosz Z., Igras J., Pudelko R., Kubsik K.

Polish Journal of Agronomy

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2010

|

nr 02

10

Morphology and developmental potential of bovine parthenotes after spontaneous activation in vitro

51%

Lechniak D., Cieslak D., Sosnowski J.

Journal of Applied Genetics

|

1998

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tom 39

|

nr 2

Spontaneous parthenogenetic activation of bovine oocytes in an in vitro maturation and fertilization system (IVM/IVF) is described. Altogether, 1403 follicular oocytes, collected by the aspiration method, were matured in vitro and then cultured without insemination in the same conditions as a group of inseminated oocytes. After 48-72 h of additional culture, 141 oocytes (10%) were found to be spontaneously activated. Morphological evaluation revealed that the number of blastomeres within parthenotes ranged from 2 to 16 cells, with a minority (15.7%) comprising of 9-16 blastomeres. According to a cytogenetic analysis, only 1.2% of the analysed parthenotes consisted of more than 9 cells. Parthenotes may not be distinguished from embryos produced in vitro and spontaneous parthenogenetic activation in an IVM/IVF system indicates suboptimal culture conditions. A group of non-inseminated oocytes should be included in each experiment to serve as a control. Spontaneously activated bovine parthenotes only occasionaly developed beyond the 8-blastomere stage in a common IVM/IVF system. The incidence of parthenotes interferes with the efficiency of in vitro embryo production but it is doubtful whether it lowers the pregnancy rate after transfer of IVF embryos.

11

Optymalizacja nawozenia pszenicy ozimej [1]. Fosfor, potas i magnez

45%

Grzebisz W.

Agrochemia

|

1997

|

nr 07

3-4

12

System nawozenia POLICE [czesc 2]

38%

Grzeskowiak A.

Agrochemia

|

1997

|

nr 10

22-24

13

Wuxal w dolistnym nawozeniu ziemniakow

38%

Jablonski K.

Ziemniak Polski

|

1998

|

nr 2

19-25

14

Korelacje pomiędzy zachwaszczeniem łanu a plonem bulw ziemniaka i jego strukturą w zależności od systemów nawożenia oraz kategorii agronomicznej gleby

38%

Rozylo K., Palys E.

Acta Scientiarum Polonorum. Agricultura

|

2008

|

tom 07

|

nr 2

Doświadczenia polowe przeprowadzono w latach 2000-2003 w Gospodarstwie Doświadczalnym Uniwersytetu Przyrodniczego w Lublinie, położonym w Bezku koło Chełma (51°19’ N; 23°26’ E). Celem badań było określenie oddziaływania liczby i masy chwastów na wielkość i strukturę plonu bulw ziemniaka nawożonego obornikiem, nawozami mineralnymi z obornikiem na tle obiektów bez nawożenia, w zależności od kategorii agronomicznej gleby. Stwierdzono istotne ujemne zależności pomiędzy liczbą i masą chwastów a wielkością plonu bulw. Plon ogólny bulw ziemniaka na glebie ciężkiej był też istotnie ujemnie skorelowany z liczbą chwastów jednoliściennych w obu terminach obserwacji zachwaszczenia; na glebie lekkiej zależności te wystąpiły jedynie przed zwarciem rzędów. Powietrznie sucha masa chwastów i ogólna liczba chwastów powodowała zwiększenie plonu bulw najdrobniejszych kosztem plonu bulw frakcji najcenniejszych (od 50 do 60 i powyżej 60 mm).

15

Some approaches to the experimental manipulation of reproductive cells and protoplasts in flowering plants

38%

Zhou C., Yang H. Y.

Acta Biologica Cracoviensia. Series Botanica

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2000

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tom 42

|

nr 1

One recent advance in plant embryology is the experimental manipulation of various reproductive cells and their protoplasts under in vitro conditions. These experimental means may be helpful for understanding the developmental biology of sexual plant reproduction, on one hand, and developing novel methods in biotechnology, on the other. This article reviews a series of our works in this field. The article includes manipulation of pollen protoplasts, de-exined pollen, male gametoplasts and female gametoplasts. Each section starts with isolation of the cells/protoplasts and is followed by further manipulations such as culture, fusion, gene transfer, and also some cell biology studies based on and related to these manipulations.

16

System nawozenia POLICE [czesc 1]

32%

Grzeskowiak A.

Agrochemia

|

1997

|

nr 09

14-16

Ograniczanie wyników

Balance of magnesium under different fertilization systems in a long-term fertilization experiment on sandy soil

Leaching of sulphur from light textured soils

Some aspects of integrated plant nutrition in orchards

Content of copper, iron, manganese and zinc in typical light brown soil and spring triticale grain depending on a fertilization system

An economic assessment of different fertilization systems in the cultivation of potato for industrial processing

Właściwości technologiczne surowca buraczanego produkowanego w zmodyfikowanej technologii nawożenia

Warunki meteorologiczne a plony jęczmienia jarego w zależności od rodzaju nawożenia

Plonowanie pszenżyta ozimego odmiany Woltario w zależności od gęstości siewu i sposobu nawożenia azotem

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

Morphology and developmental potential of bovine parthenotes after spontaneous activation in vitro

Optymalizacja nawozenia pszenicy ozimej [1]. Fosfor, potas i magnez

System nawozenia POLICE [czesc 2]

Wuxal w dolistnym nawozeniu ziemniakow

Korelacje pomiędzy zachwaszczeniem łanu a plonem bulw ziemniaka i jego strukturą w zależności od systemów nawożenia oraz kategorii agronomicznej gleby

Some approaches to the experimental manipulation of reproductive cells and protoplasts in flowering plants

System nawozenia POLICE [czesc 1]