Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
A field experiment with red clover (Dajana cv.) was conducted in the years 2005–2006. Two factors were considered: I – pre-sowing seed radiation using divergent He-Ne laser beam with surface power densities of 0.4 and 8 mW·cm-2 (R0, R4, R8) applied 1, 2, and 4 times; II – nutrition of red clover with boron and molybdenum at the following rates 0; B – 0.3; Mo – 0.01; B – 0.3 + Mo – 0.01; B – 0.45; Mo – 0.015; B – 0.45 + Mo – 0.015 kg · ha-1. The field emergence ability as well as canopy structure elements and red clover yielding in the year of sowing were evaluated in the experiment. The best emergence was recorded for red clover seeds treated with basic Mo and Mo + B rates, while the highest shoot number as well as green and dry matter yields for seeds treated with only molybdenum at basic and a rate increased by 50%. Laser stimulation of seeds in the majority of experimental combinations considerably increased the field emergence ability of red clover, the number of shoots per 1 m2, as well as the dry matter yield, whereas it decreased the weight of a single shoot.
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