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Analysis of the elements of edible potato cultivation technologies in small environment-friendly farms

100%

Sławiński K.

tom Vol. 58, nr 2

154--157

The present study covers an analysis of edible potato production technologies that are used in agricultural practice in small environment-friendly farms. The research focuses on the influence of machinery on energy inputs, costs and labour intensity. It was found that the selection and use of machinery results in a distinct variation of the edible potato production efficiency in small environment-friendly farms. The power of those farm tractors that are in use is frequently in excess of the requirements of the farm. The operating efficiency of agricultural machinery does not match in an adequate manner the power of used farm tractors. Research is required into an optimization of edible potato cultivation technologies that are used in practice in environment-friendly systems.

Effect of titanium on assimilation leaf area and chlorophyll content of very early-maturing potato cultivars

100%

Wadas W. , Kalinowski K.

nr 2

Quality of French-fries of 37 potato cultivars in conditions of application of growth regulators mival and poteitin

84%

Sawicka B. , Mikos-Bielak M.

nr 2

Use of growth regulators at potato cultivation and its effect on subsequent french-fries quality. The qualitative analyses of french-fries were based on tuber samples from a field experiment carried out on sandy-loamy soil in 1990-1992 in Parczew, Biała Podlaska Province. The experiment was set up with randomized subblocks in three replications. The subblocks of 1st row were made by the growth regulators: a) Mival concentration 500 mg × l-1 water; b) Poteitin concentration 10 mg × l-1 water; c) the control with distilled water. The growth regulators were applied onto the tubers in a spray form just before the planting. A factor of 2nd row was made by 37 potato cultivars out of all the earliness groups. Regulator Mival contributed to french-fries taste and flavour improvement in the years of a warm and dry potato vegetative period and Poteitin preparation has contributed significantly to improve french-fries consistency.

The nitrates content in early potato tubers depending on growing conditions

67%

Wadas W. , Jablonska-Ceglarek R. , Kosterna E.

Electronic Journal of Polish Agricultural Universities. Series: Horticulture

2005

tom 08

nr 1

Niedobory i nadmiary opadów w okresie wegetacji ziemniaka późnego w środkowo-wschodniej Polsce (1971-2005)

67%

Radzka E. , Jankowska J.

nr 1

W pracy wykorzystano dane z dziewięciu stacji IMGW z rejonu środkowo-wschodniej Polski (1971-2005) dotyczące miesięcznej sumy opadów atmosferycznych i średniej miesięcznej temperatury powietrza w okresie wegetacji ziemniaka późnego (V-VIII). Obliczono opady optymalne dla ziemniaka późnego według wskaźników Klatta (cyt za. Grabarczyk 1983) dla gleb średnio zwięzłych i lekkich w kolejnych miesiącach okresu wegetacji. Z różnic między warto-ściami miesięcznych sum opadów występujących w latach badań i wartościami uznanymi za opty-malne wyznaczono niedobór i nadmiar opadów. Stwierdzono, że w okresie wegetacji ziemniaka późnego dwukrotnie częściej występowały niedobory niż nadmiary opadów. Średnia wieloletnia suma niedoboru opadów w okresie V-VIII na glebie lekkiej wynosiła ponad 140 mm, a na glebie średnio zwięzłej ponad 100 mm. Natomiast wartości nadmiaru opadów w tym okresie na obu rodza-jach gleb kształtowały się na podobnym poziomie i wynosiły ponad 100 mm. Największe niedobory opadów notowano w lipcu i sierpniu. Z największą częstością występowały ekstremalne (wyższe od średnich wieloletnich) niedobory opadów na glebie lekkiej.

In the study data from nine meteorological stations from the region of Central and Eastern of Poland (1971-2005) were used. They were monthly sums of precipitation and average monthly air temperatures during the growing season of late potato (V-VIII). Optimum rainfall for late potato acc. to the Klatt index (after Grabarczyk 1983) was calculated for the medium concise soil and light soil in the subsequent months of the growing season. From the differences between the values of monthly sums of precipitation occurring in the research years and the values recognised as optimal the rainfall deficit and excess were determined. It was found that during the growing season of late potato the deficits were twice more frequent than the excess of rainfall. The average long-term sum of precipitation deficiency during May-August on light soil was more than 140 mm, and on the medium concise soil more than 100 mm. The values of excess rainfall during this period on both soil types were at a similar level and amounted to more than 100 mm. The greatest deficiency of rainfall was recorded in July and August. Extreme rainfall deficits (higher than the average multi-annual) occurred with the greatest frequency on light soil.

The Plant Protection Institute in Poznan

67%

Pruszynski S.

1999

nr 2