Wyniki wyszukiwania

1

The balance of phosphorus depending on soil kind and NPK fertilization level in a long-term lysimetric experiment

100%

Sykut S., Ruszkowska M.

Polish Journal of Soil Science

|

2000

|

tom 33

|

nr 2

2

Fodder value of spring triticale in correlation with nitrogen fertilization level

84%

Pilejczyk D., Sienkiewicz S., Wojnowska T., Zarczynski P.

Polish Journal of Natural Sciences

|

2004

|

tom 16

77-85

3

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Influence of different potassium fertilization level on nutritional status of winter wheat and on yield during critical growth stage

84%

Gaj R.

Journal of Elementology

|

2010

|

tom 15

|

nr 4

629-637

An optimum plant crop nutrition status during critical stages of growth is one of the most important factors shaping their ability to yield. It has been assumed that plant nutrition during the spring wheat stem elongation stage has a significant influence on the growth and yield of this crop. In Poland, potassium is a critical nutrient for plant growth and yielding. In order to verify this hypothesis, three series of one factorial experiment were conducted in 2003-2005 that involved reduced rates of potassium applied to cv. Zyta winter wheat. The following rates of potassium were applied: 0, 25, 50 and 100 kg ha–1. The assessment of wheat nutritional status was conducted at the beginning of stem elongation (BBCH30/31) using a German model called PIPPA. It had been hypothesized that this particular stage was decisive for wheat growth and yielding. Wheat plants showed deficiency in Ca, K, P and N irrespective of the applied potassium rate. Calcium and potassium deficiencies were crucial for the final grain yield. However, the relationships that occurred between nitrogen and main nutrients, i.e. pairs of nutrients such as N: P, N: K, N: Ca, showed a much better prognostic value, i.e. the relationship with grain yield, than the levels of nutrients in separation. The nitrogen content in leaves at the beginning of shooting showed its limiting effect on grain yield, provided that Ca was deficient, an event which appeared when N: Ca was wider that 34: 1. The same correlation was noticed for potassium, but there the excess of nitrogen revealed its harmful effect when the N:K ratio was above 1.0.

4

Productivity of selected grasses in mixtures with Trifolium repens L. at two levels of nitrogen fertilization

84%

Grygierzec B.

Fragmenta Agronomica

|

2012

|

tom 29

|

nr 3

5

The effects of varied soil and foliar mineral fertilization levels in the production of high-starch potatoes

84%

Bogucka B., Cwalina-Ambroziak B., Zieba T.

Polish Journal of Natural Sciences

|

2010

|

tom 25

|

nr 3

The objective of this study was to determine the effect of varied (280 and 420 kg NPK ha⁻¹) soil and foliar application of mineral fertilizers (Basfoliar 12-4-6, ADOB Mn, Solubor DF) on the yield and qualitative traits of late-maturing potato variety Jasia. An exact, two-factorial field experiment was conducted by the randomized split-plot method, in four replications, in the years 2004–2006 in the Masurian Lakeland. The total yield of potato tubers, the content and yield of starch, and the grain size fractions of starch were determined in the study. The applied fertilizers, regardless of their rates, had no significant effect on the total yield of potato tubers and starch yield. The starch content of potatoes was affected by soil fertilization. An increase in the rate of mineral fertilizers from 280 to 420 kg NPK ha⁻¹ caused a decrease in starch content. Large starch grains (> 40 μm in diameter), which enable to reduce the overall loss during the removal of starch from the potato pulp, dominated in the experimental material.

6

Influence of wheat N-fertilization and grain moistening on the physical properties of wet gluten

84%

Mis A., Grundas S.

International Agrophysics

|

2001

|

tom 15

|

nr 1

7

Zawartosc roznych form azotu w jeczmieniu jarym w zaleznosci od poziomu nawozenia siarka i potasem

67%

Kaczor A., Laszcz-Zakorczmenna J.

Acta Agrophysica

|

2003

|

tom 01

|

nr 4[89]

667-672

8

The effect of variable mineral fertilization on yield and grain mineral composition of covered and naked oat cultivars

67%

Pisulewska E., Poradowski R., Antonkiewicz J., Witkowicz R.

Journal of Elementology

|

2009

|

tom 14

|

nr 4

Among the cereals grown in Poland, oat grain contains the highest amount of ash, composed of macro- and microelements. It has been suggested that applying increased levels of mineral fertilization, to newer cultivars of oat could have an impact on their grain yield and mineral composition. A two-factorial (2x2) field experiment was conducted for three years (1999-2001) in the south of Poland. The experiment involved two cultivars of oat, i.e. the covered cultivar Dukat and the naked cultivar Akt, and two fertilization levels, i.e. low (30 kg N, 30 kg P2O5 and 45 kg K2O ha-1) and high (60 kg N, 60 kg P2O5 and 90 K2O ha-1). There was no significant difference in grain yield between the studied cultivars. On the other hand, the high NPK level increased the content of Mg and Fe in the grain of Akt. At the same time, there were no significant differences in the grain content of Cu, Fe, Mn and Zn between Dukat and Akt. Overall, the high level of mineral fertilizing decreased the grain content of microelements as a result of dilution effect. The content of Cu and Zn in oat grain was suitable for human consumption according to the IUNG-PIB standards. Generally, it was shown that cv. Akt was richer in mineral elements, especially in P, K, Ca, Mg, Fe and Zn, than cv. Dukat.

9

Wpływ systemów uprawy roli, poziomów nawożenia i ochrony na plonowanie ziemniaka uprawianego na glebie lekkiej

67%

Kraska P., Palys E.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2002

|

tom 223-224

383-395

W latach 1998–2000 w Gospodarstwie Doświadczalnym Bezek koło Chełma, przeprowadzono doświadczenie polowe na glebie bielicowej niecałkowitej, leżącej na podłożu marglistym o składzie granulometrycznym piasku gliniastego lekkiego i mocnego. W pracy przedstawiono wpływ płużnego i bezorkowego systemu uprawy roli oraz dwóch zróżnicowanych poziomów nawożenia i ochrony chemicznej na plonowanie i strukturę plonu bulw jadalnej odmiany ziemniaka Ania. Jednocześnie analizowano kształtowanie się plonu białka, skrobi i suchej masy. Przeprowadzone badania nie wykazały istotnych różnic w plonowaniu ziemniaka uprawianego systemem płużnym, jak i bezorkowym. Stwierdzono istotny wpływ podwyższonego poziomu nawożenia i ochrony roślin na zwiększenie plonu bulw ziemniaka, skrobi, suchej masy bulw oraz białka ogólnego. Jednocześnie ten poziom pielęgnacji istotnie zwiększał masę i liczbę bulw z jednego krzaka ziemniaka oraz średnią masę jednej bulwy.

10

Efektywność energetyczna produkcji roślinnej w płodozmianie 4-polowym w zależności od uproszczeń w uprawie roli i poziomu nawożenia mineralnego

67%

Bujak K., Frant M., Harasim E.

Acta Agrophysica

|

2010

|

tom 15

|

nr 1[177]

W latach 2003-2006, w drugiej rotacji płodozmianu 4-polowego (ziemniak++ – pszenica jara – groch siewny – pszenica ozima), badano wpływ trzech sposobów uprawy roli (tradycyjny, częściowo uproszczony, uproszczony) i dwóch poziomów nawożenia mineralnego (średnio rocznie w rotacji 167,5 kg NPK ha-1 i zwiększony o 50%) na efektywność energetyczną produkcji roślinnej. W ocenie efektywności zastosowano rachunek ciągniony. Stwierdzono, że wskaźniki oceny energetycznej zależały bardziej od gatunku rośliny uprawnej niż od badanych czynników agrotechnicznych. Najwyższą efektywnością nakładów wyróżniła się uprawa zbóż (zwłaszcza pszenicy ozimej) i grochu, a najniższą produkcja ziemniaka. W przypadku zbóż uprawa uproszczona powodowała obniżenie wskaźnika efektywności energetycznej o 3-18%. Podobnie na zwiększenie poziomu nawożenia mineralnego reagowały zboża i groch. Natomiast częściowe uproszczenie uprawy roli pod pszenicę jarą i pełne uproszczenie jej pod groch było nieco efektywniejsze od stosowania klasycznej uprawy płużnej.

11

Wplyw dolistnego dokarmiania na zawartosc mikroelementow w pszenicy ozimej, przy roznych poziomach nawozenia mineralnego

67%

Blaziak J., Chwil S.

Acta Agrophysica

|

2003

|

tom 85

39-44

12

Optimalisation of mineral fertilization in goldenrod (Solidago virgaurea L.ssp. virgaurea) cultivated for pharmaceutical purposes

67%

Kolodziej B.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2009

|

tom 08

|

nr 1

In a field experiment, the growth and yielding of goldenrod (Solidago virgaurea L. ssp. virgaurea) and leiocaroposide content in herb depending on different NPK fertilization level and soil type were analysed. Mineral fertilization level was the factor that significantly affected yielding and parameters of goldenrod growth. Along with NPK level increase a tendency to increase number of stems, their height and inflorescences length as well as a significant increase of goldenrod raw material yields and at the same time decrease of leiocarposide content was observed. Increasing mineral fertilization doses were especially effective on poor in nutrients slightly loamy sand. Significantly higher raw material yields, but characterized by lower leiocarposide content were collected on rich in nutrients heavy loamy sand.

13

Wplyw wilgotnosci oraz poziomu nawozenia azotowego na wlasciwosci wytrzymalosciowe ziarna zyta odmiany Amilo

67%

Laskowski J., Zdybel A.

Acta Agrophysica

|

2003

|

tom 02

|

nr 4[98]

803-814

14

The effect of tillage simplifications and mineral fertilisation level on the number and distribution of weed seeds in soil

67%

Bujak K., Frant M., Budzynska B.

Acta Agrobotanica

|

2008

|

tom 61

|

nr 2

In the present paper, results of a study on the effect of a reduction in the number of ploughings in a crop rotation on the seed weed bank in the soil are presented. The study was carried out in the second and fourth year of a crop rotation (potato– spring wheat– pea– winter wheat). A reduction in the number of ploughings to three in the crop rotation decreased weed infestation of the plough layer, whereas when only one ploughing was made there was clearly more weed diaspores in the soil than after plough tillage. In the fi rst period of the study, the mineral fertilisation level did not differentiate the weed seed bank in the soil, whereas after the end of the rotation its signifi cant increase was noted as a result of more intensive fertilisation. In all the experimental treatments, diaspores of Chenopodium album, Viola arvensis, Galinsoga sp. and Apera spica-venti occurred in greatest numbers.

15

Wymiana gazowa owsa w zaleznosci od poziomu nawozenia azotem

67%

Piotrowska W., Pietkiewicz S., Wyszynski Z., Loboda T., Gozdowski D., Kotlarska-Jaros E., Stankowski S.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2003

|

tom 229

131-137

16

The effectiveness of symbiotic and associated nitrogen fixators, stimulating growth regulators in mixed agrocenoses depending on the level of nitrogen nutrition

67%

Persikova T. F., Sergeeva I. I.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2005

|

tom 507

|

nr 1

17

Productivity of winter triticale depending on nitrogen fertilization methods and sowing rate

67%

Kochurko V. I.

Folia Universitatis Agriculturae Stetinensis. Agricultura

|

2002

|

tom 90

18

Effect of various fertilization levels on the crack resistance of horse beans

67%

Gorzelany J.

International Agrophysics

|

1999

|

tom 13

|

nr 2

19

Cultivar-related and agronomic conditions of rye yielding on good rye complex soil. Part II. Effectiveness of different cultivation technologies

67%

Jankowski K. J., Budzynski W. S., Dubis B.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

|

2003

|

tom 06

|

nr 1

The present paper covers economic analysis (concerning energy and cost aspects) of rye production technologies employing different cultivars, sowing dates, NPK fertilisation, microelements nourishment and weed control. Intensive production of rye using a hybrid cultivar, early sowing and NPK fertilisation at 176 kg·ha-1 produced 46% higher yields compared to extensive technologies involving open pollination cultivars and low fertiliser rates. The highest energy consumption in winter rye production was caused by NPK fertilisation. Intensive technologies were less energy-effective than extensive methods. The direct costs of growing 1 ha of rye in extensive technologies equalled 2.2 2.9 t grain. In intensive technologies direct costs were returned at yields as high as 3.9 4.6 t per ha. The yield value increment resulting from more intensive production methods did not cover completely the increase in direct costs.

20

Effect of growth regulators applied together with different phosphorus fertilization levels on the content and accumulation of potassium, magnesium and calcium in spring wheat

67%

Wierzbowska J., Bowszys T.

Journal of Elementology

|

2008

|

tom 13

|

nr 3

The objective of this study has been to trace the effect of endogenous growth regulators and different phosphorus fertilization levels on the content and accumulation of potassium, magnesium and calcium in spring wheat. The research was based on the results of a pot experiment established on soil of grain size distribution of light loamy sand. The soil was slightly acidic and moderately abundant in available phosphorus, potassium and magnesium. Against the background of stable NKMg fertilization (1.5 g N, 1.5 g K and 0.25 g Mg), increasing phosphorus rates (0.0 to 1.02 g P per pot) were tested. In order to compare the effect produced by growth regulators, applied in conjunction with rising doses of phosphorus, the pots were divided into 4 groups according to the sprays: distilled water (control), kinetin, gibberellin and auxin. Kinetin and auxin increased the content of potassium in wheat grain, whereas gibberellin stimulate the removal of this element. Increasing P rates depressed the concentration of potassium in wheat except the oldest leaves. The highest uptake of potassium was observed following an application of 0.68 g P per pot. Gibberellin increased the content of Mg in leaves, glumes, oldest leaves and grain, whereas kinetin and auxin resulted in lower Mg levels. The highest Mg uptake occurred after using 0.68 g P per pot. The plant hormones raised the content of ca in wheat grain. Gibberellin and auxin increased the uptake of calcium by P non-fertilized wheat. Phosphorus fertilization broadened slightly the Ca:P ratio in grain, glumes and stems. Kinetin and auxin narrowed the Ca:P ratio in leaves. Higher phosphoru rates, especially in vegetative organs, narrowed the Ca:P ratio. Gibberellin narrowed the K:(Mg+Ca) ratio in grain and vegetative organs, which in contrast was broadened by kinetin. Auxin broadened these proportions in wheat grain and leaves, while narrowing them in glumes and stems. The lowest and the highest phosphorus rates narrowed the K:(Mg+Ca) ratios in grain and glumes.

Ograniczanie wyników

The balance of phosphorus depending on soil kind and NPK fertilization level in a long-term lysimetric experiment

Fodder value of spring triticale in correlation with nitrogen fertilization level

Influence of different potassium fertilization level on nutritional status of winter wheat and on yield during critical growth stage

Productivity of selected grasses in mixtures with Trifolium repens L. at two levels of nitrogen fertilization

The effects of varied soil and foliar mineral fertilization levels in the production of high-starch potatoes

Influence of wheat N-fertilization and grain moistening on the physical properties of wet gluten

Zawartosc roznych form azotu w jeczmieniu jarym w zaleznosci od poziomu nawozenia siarka i potasem

The effect of variable mineral fertilization on yield and grain mineral composition of covered and naked oat cultivars

Wpływ systemów uprawy roli, poziomów nawożenia i ochrony na plonowanie ziemniaka uprawianego na glebie lekkiej

Efektywność energetyczna produkcji roślinnej w płodozmianie 4-polowym w zależności od uproszczeń w uprawie roli i poziomu nawożenia mineralnego

Wplyw dolistnego dokarmiania na zawartosc mikroelementow w pszenicy ozimej, przy roznych poziomach nawozenia mineralnego

Optimalisation of mineral fertilization in goldenrod (Solidago virgaurea L.ssp. virgaurea) cultivated for pharmaceutical purposes

Wplyw wilgotnosci oraz poziomu nawozenia azotowego na wlasciwosci wytrzymalosciowe ziarna zyta odmiany Amilo

The effect of tillage simplifications and mineral fertilisation level on the number and distribution of weed seeds in soil

Wymiana gazowa owsa w zaleznosci od poziomu nawozenia azotem

The effectiveness of symbiotic and associated nitrogen fixators, stimulating growth regulators in mixed agrocenoses depending on the level of nitrogen nutrition

Productivity of winter triticale depending on nitrogen fertilization methods and sowing rate

Effect of various fertilization levels on the crack resistance of horse beans

Cultivar-related and agronomic conditions of rye yielding on good rye complex soil. Part II. Effectiveness of different cultivation technologies

Effect of growth regulators applied together with different phosphorus fertilization levels on the content and accumulation of potassium, magnesium and calcium in spring wheat