Effect of rainfall amount and distribution on growth, development and yields of determinate and indeterminate cultivars of blue lupin
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Date
2011
Authors
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Journal ISSN
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Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
The experiment was run at the Agricultural Experiment
Farm, Grabów, operated by the Institute of Soil Science and Plant
Cultivation – National Research Institute in Puławy in the years
2005–2007. The study comprised blue lupin varieties: cv. Graf,
cv. Zeus (indeterminate type), cv. Sonet, cv. Boruta (determinate
type). The experiment was arranged as a split-plot-split-block design
with four replications and set up on a good wheat complex
soil rated as crop production class IIIa. Amount and distribution
of rainfall in each year had a large impact on morphological characters
of blue lupin. Shortage of rain in the period of spring and
summer negatively affected plant height and restricted leaf area.
Yields were to the largest extent dependent on the amount of rainfall
in June, i.e. in the blooming period of the plant. Decrease in
yield observed in years in which the weather was unfavourable to
the production of blue lupin was due to reduced values of yield
components, including, first of all, number of pods per plant and
number of seeds per plant since the 1000-seed weight was not
altered significantly. The indeterminate cultivars, Graf and Zeus,
turned out to be less sensitive to periodical shortages of water in
soil in comparison to the determinate cultivars Sonet and Boruta.
Keywords
blue lupin, determinate cultivar, indeterminate cultivar, rainfall requirements, weather pattern, growth and development, yields
Citation
Polish Journal of Agronomy
2011, 4, 16–22