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The influence of soil reaction on the effects of molybdenum foliar fertilization of oilseed rape

100%

Stanislawska-Glubiak E.

Journal of Elementology

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2008

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tom 13

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nr 4

647-654

Thirty-three field trials have been carried out on soils of different acidity (pH=4.1-7.1) to investigate the effect of foliar fertilization with molybdenum on oilseed rape. Three rates of the element: 30, 60 and 120 g Mo⋅ha-1, were applied on two dates: in the spring, a few days after the growing season started, and during the early stem formation stage. In the group of trials on very acidic and acidic soils, seed yields were on average 0.08 t⋅ha-1 higher. The regression equation demonstrated that a relative seed yield increase obtained as a result of molybdenum fertilization depended on the concentration of manganese and percentage of the silt fraction in the soil. Oilseed rape grown on slightly acidic and neutral soils responded to molybdenum fertilization with an average seed yield increase of 0.02 t⋅ha-1. The rate of molybdenum had a significant effect on rape yields only in the group of trials set up on slightly acidic and neutral soils. No significant difference was found between 60 and 120 g Mo⋅ha-1. However, both of these rates were more effective than the lowest dose of 30 g Mo⋅ha-1. No evidence was found to support any relationship between the date of molybdenum application and seed yields or any interaction between Mo rates and application dates in either group of the trials.

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Impact of nitrogen [15N] application time on its uptake and distribution in spring barley plant parts

100%

Kalembasa S., Kalembasa D.

Electronic Journal of Polish Agricultural Universities. Series Agronomy

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2002

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tom 05

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nr 2

The aim of the pot experiment was to determine the impact of timing of nitrogen application in the form of ammonium nitrate enriched with the 15N isotope, on the uptake of 15N by spring barley plant and its distribution in grain, awns, leaves, straw, and roots. 1.21 g of N per pot containing 10 kg of the soil was applied at two doses: 2/3 before the sowing, and 1/3 at the tillering phase or at the stalk-shooting phase. The distribution of the applied nitrogen, assumed as 100%, was the highest in grain (61.5%), and the lowest in roots (4%). The mean nitrogen utilisation coefficient value (%) measured with the difference method was 86.9 %, and that for the isotope dilution method 61.0%. Postponing the time of nitrogen application from the tillering to the stalk-shooting phase differentiated the nitrogen utilisation coefficient value, which was higher for the difference method than for the isotope dilution method and it amounted to +32.3% at the tillering.

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Dynamics of Alternaria blight [Alternaria spp.] spread on spring oilseed rape leaves and siliques and variation of the disease parameters under the effect of prochloraz and tebuconazole in relation to application time

80%

Brazauskiene I., Petraitiene E.

Journal of Plant Protection Research

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2003

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tom 43

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nr 4

313-324

Ograniczanie wyników

1 Electronic Journal of Polish Agricultural Universities. Series Agronomy

1 Journal of Elementology

1 Journal of Plant Protection Research

1 Brazauskiene I.

1 Kalembasa D.

1 Kalembasa S.

1 Petraitiene E.

1 Stanislawska-Glubiak E.

1 2008

1 2003

1 2002

The influence of soil reaction on the effects of molybdenum foliar fertilization of oilseed rape

Impact of nitrogen [15N] application time on its uptake and distribution in spring barley plant parts

Dynamics of Alternaria blight [Alternaria spp.] spread on spring oilseed rape leaves and siliques and variation of the disease parameters under the effect of prochloraz and tebuconazole in relation to application time