Effect of mineral fertilization and plant growth regulators on photosynthetic active radiation transmission by naked oat canopy
2010
Witkowicz, R. | Pisulewska, E.,Uniwersytet Rolniczy, Krakow (Poland). Katedra Szczegolowej Uprawy Roslin
In the research study, the effect was determined of the genotype, phosphorus and potassium fertilization of foliar application of nitrogen, and of Moddus and Promalin plants growth regulators on the transmission of photosynthetic active radiation (PAR) by the oat canopy. The research results confirmed the statistically important effect of phosphorus and potassium fertilization on the PAR quantity transmitted by the oat canopy on four investigation days in June. The effect studied, expressed in standard deviation units, varied from 0,254 to 0,347. In addition, it was confirmed that the PAR transmission by a STH 7000 dwarf genotype was statistically significantly higher if compared to the transmission by the Akt cultivar. The foliar application of nitrogen caused the content of nitrogen in the green matter of oats to essentially exceed the values as indicated by the nutritional standards ref. to ruminants
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