Wyniki wyszukiwania

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Genotype and environmental variability of chemical elements in potato tubers. Review article

100%

Sawicka B., Noaema A. H., Hameed T. S., Skiba D.

Acta Scientiarum Polonorum. Agricultura

|

2016

|

tom 15

|

nr 3

The scope of genetic variation in concentrations of minerals in potato tubers and effects of mineral fertilizers application, pesticides, growth regulators on the mineral content and the relationships of these elements in potato tubers, was analyzed. The study discussed the phenotypic variation range determined by genetic and environmental variability. The hypothesis presupposes that increased yields generated either by the application of mineral fertilizers and/or the use of cultivars with higher fertility may lead to a reduction in the concentration of minerals in potato tubers, was verified in the study.

2

Effect of soil pollution with heavy metals on ionic relations in oats (Avena sativa L.)

100%

Wyszkowski M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2009

|

tom 541

|

nr 2

The objective of the study was to determine the effect of cadmium, chromium, mercury, zinc, nickel, copper and lead on ionic ratios in aerial parts of oats. The actual effect produced by these heavy metals on ionic ratios in oats depended on the type of metal. Soil contamination with zinc and cadmium broadened Ca : Mg and K : Na ratios but narrowed the ratios K : Ca and K : (Ca + Mg). Moreover, cadmium broadened the ratio between Ca and P, in contrast to the ratio K : Mg. Copper caused the narrowing of all the ionic ratios examined in oats except Ca : P and Ca : Mg. On the other hand, chromium(III) produced a reverse effect as it broadened the ionic rations between K : Na, K : Ca, K : Mg and K : (Ca + Mg). Chromium(IV) and copper acted likewise, although the highest rates of these metals would generally produce a negative effect. They both narrowed the Ca : P ratio. Soil pollution with nickel made K : Ca, K : Mg and K : (Ca+Mg) ratios in oats broader. In addition, the lowest nickel rate (200 mg Ni∙kg-1 of soil) also broadened Ca : P and Ca : Mg ratios, whereas the dose of this metal being twice as high as the above caused the narrowing of these ionic ratios. Nickel also narrowed the ratio between K and Na. Lead, in turn, broadened all the tested ionic ratios except K : Ca. The ionic ratios were significantly correlated with the content and uptake of microelements by oats and partly with the plant yields.

3

Wplyw kompostow z wycierki ziemniaczanej i komunalnego osadu sciekowego na stosunki jonowe w zycicy trwalej

88%

Krzywy-Gawronska E.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2006

|

tom 512

|

nr 2

363-368

W roku 2003 przeprowadzono doświadczenie wazonowe na glebie zaliczanej do kategorii brunatnych niecałkowitych, o składzie granulometrycznym piasku gliniastego lekkiego. Określono działania kompostów sporządzonych z wycierki ziemniaczanej i komunalnego osadu ściekowego z dodatkiem komponentów strukturotwórczych na stosunki jonowe K : Mg, K : Ca, K : (Mg + Ca), Ca : Mg i Ca : P w życicy trwałej. Rezultaty badań wskazują, że zastosowane komposty pozytywnie oddziałują na kształtowanie stosunku jonowego K : (Mg + Ca). Stosunki jonowe K : Mg oraz Ca : P były zawężone a stosunki jonowe K : Ca i N : S rozszerzone w stosunku do wartości optymalnych ponieważ w doświadczeniu stosowano tylko komposty z dodatkowym nawożeniem mineralnym potasu 50% solą potasową.

4

Interaction between K, Na, Ca and Mg in rescuegrass [Bromus unioloides Humb.et Kunth.] and soil in relation to N, K, Na and Mg fertilization

75%

Nowak G. A., Zalewska M.

Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

|

1995

|

tom 61

139-146

A pot experiment was conducted to study the effects of increasing rates of nitrogen, potassium, sodium and magnesium on yield and mineral composition of rescuegrass (Bromus unioloides Humb. et Kunth.). The highest yield of dry matter was obtained in the case of nitrogen and potassium treatments, while the effect of sodium and magnesium turned aut tobesmall. Increasing rates of nitrogen improved mineral composition of rescuegrass by limiting excessive potassium accumulation and increasing concentration of Ca, Mg and Na in plant tissues. It resulted in a desirable decrease in values of K/Ca, K/Mg, K/(Ca+Mg) and (K+Na)/(Ca+Mg) ratios. Potassium fertilization increased K/Ca, K/(Ca+Mg) and (K+Na)/(Ca+Mg) ratios in rescuegrass and also K/Mg, K/Na in the second cutting. Sodium and magnesium fertilization diminished the disproportions in ionic equilibrium only to some extent.

Ograniczanie wyników

2 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

1 Acta Scientiarum Polonorum. Agricultura

1 Hameed T. S.

1 Krzywy-Gawronska E.

1 Noaema A. H.

1 Nowak G. A.

1 Sawicka B.

1 Skiba D.

1 Wyszkowski M.

1 Zalewska M.

1 2016

1 2009

1 2006

1 1995

Genotype and environmental variability of chemical elements in potato tubers. Review article

Effect of soil pollution with heavy metals on ionic relations in oats (Avena sativa L.)

Wplyw kompostow z wycierki ziemniaczanej i komunalnego osadu sciekowego na stosunki jonowe w zycicy trwalej

Interaction between K, Na, Ca and Mg in rescuegrass [Bromus unioloides Humb.et Kunth.] and soil in relation to N, K, Na and Mg fertilization