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1

Uprawa ogórka w polu

100%
Wadas W., Dziugiel T.
Wiadomości Rolnicze. Podlaski Ośrodek Doradztwa Rolniczego w Szepietowie
|
2014
|
nr 04
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of multi-nutrient complex fertilizers on growth and tuber yield of very early potato (Solanum tuberosum L.) cultivars

100%
Wadas W., Dziugiel T.
Acta Agrobotanica
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2013
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tom 66
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nr 3
The aim of the study was to compare the effect of multi- -nutrient complex fertilizers (HydroComplex, Nitrophoska Blue Special and Viking 13 from the nitrophoska group, and Polimag S from the amophoska group) and single-nutrient fertilizers on the growth and tuber yield of very early potato cultivars (‘Aster’, ‘Fresco’, ‘Gloria’). The field experiment was carried out on podzolic soil in mid-eastern Poland during 2005–2007. The study showed a greater beneficial effect of HydroComplex and Nitrophoska Blue Special on the growth of very early potato cultivars than that of Viking 13 and Polimag S. The application of HydroComplex and Nitrophoska Blue Special resulted in greater above-ground plant biomass and assimilation leaf area compared with single-nutrient fertilizers; the leaf area index (LAI) was higher by 0.28 and 0.32, respectively. The differences were smaller and not statistically confirmed with the use of Polimag S and Viking 13. When the multi-nutrient complex fertilizers were applied, leaf weight ratio (LWR), leaf area ratio (LAR) and specific leaf area (SLA) were similar to the single-nutrient fertilizers. Of the multi-nutrient complex fertilizers, only Nitrophoska Blue Special resulted in higher tuber yield, on average by 2.40 t × ha-1, compared with the single-nutrient fertilizers. The studied cultivars showed a similar response to applied fertilizers. LAI for ‘Gloria’ was higher than for ‘Aster’ and ‘Fresco’, with smaller LAR found in ‘Gloria’. LWR for ‘Fresco’ was smaller than for ‘Aster’ and ‘Gloria’, with higher SLA found in ‘Fresco’. The tuber yield of ‘Aster” (24.04 t × ha-1) was higher on average by 3 t × ha-1 than for ‘Fresco’ and ‘Gloria’.
3

Agrowłóknina w uprawie ziemniaków na wczesny zbiór

100%
Wadas W., Dziugiel T.
Wiadomości Rolnicze. Podlaski Ośrodek Doradztwa Rolniczego w Szepietowie
|
2013
|
nr 04
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Utilization of nitrogen, phosphorus and potassium from complex fertilizers by very early-maturing potato cultivars

81%
Wadas W., Raczuk J., Dziugiel T.
Acta Scientiarum Polonorum. Agricultura
|
2015
|
tom 14
|
nr 2
Potato has a relatively shallow root system and requires significant nutrient inputs to maintain tuber productivity and quality. Efficient application of the proper type and amount of fertilizer plays an important role in achieving profitable tuber yield with minimum nutrient loss to the environment. The aim of this study was to compare utilization of nutrients from NPKMgS-type fertilizer complex from the nitrophoska (HydroComplex, Nitrophoska Blue Special, Viking 13) and amophoska group (Polimag S), and single-nutrient fertilizers (ammonium nitrate, superphosphate, potassium sulphate) by very early-maturing potato cultivars (Aster, Fresco, Gloria) on loamy sand soil. Nutrient utilization from fertilizers was calculated as a percentage ratio of the difference between the amount of nutrient uptaken by potato tubers in treatment with particular fertilizers, and nutrient uptake by potato tubers in the control treatment without fertilizers, to the quantity of the nutrient applied in particular fertilizers. With the use of complex fertilizers with microelements from the nitrophoska group, i.e. Nitrophoska Blue Special and HydroComplex, nitrogen, phosphorus and potassium utilization by potato tubers was higher than that obtained using the single-nutrient fertilizers. The use of these fertilizers produced better results for plant growth under well-watered conditions. With the use of complex fertilizers from the nitrophoska group without microelements (Viking 13) and from the ammophoska group (Polimag S), the nutrient utilization was similar or lower than with the application of single-nutrient fertilizers. The highest nutrient uptake along with potato tuber yield was reported with the application of Nitrophoska Blue Special; the nitrogen uptake was higher by 10.05 kg·ha⁻¹, phosphorus by 1.84 kg·ha⁻¹, and potassium by 11.41 kg·ha⁻¹ in comparison with single-nutrient fertilizers. When this fertilizer was applied, utilization of nitrogen (21%), phosphorus (9%) and potassium (23%) by very early-maturing potato cultivars was almost twice as high as with single-nutrient fertilizers. The uptake and utilization of nitrogen, phosphorus and potassium by potato tubers depended on the cultivar, and was determined by weather conditions during the potato growing season.
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