engleski

Effects of organic fertilization on soil properties and chamomile flower yield

The effects of different rates of organic fertilizers upon the yield of dry chamomile flowers were studied in an exact field trial setup on Luvisols in Podravina region, Croatia. The trial was set up according to the randomized block design with four replications. During three years of research (2013/2014, 2014/2015, and 2015/2016), changes in the soil chemical complex were monitored. Organic fertilization rendered significantly higher yields of dry chamomile flower than the control treatment. Organic fertilizers did not significantly affect soil pH, soil organic matter, and plant available phosphorus and potassium. The optimum amount of fertilizer for chamomile on this type of soil is 70 kg of nitrogen and 35 kg of plant available phosphorus and potassium. The study has also shown that the most effective parameter in the process is the weather conditions during the year, i.e., precipitation intensity, especially in the last few weeks prior to harvest.

Organic agriculture ; Fertilization ; Yield of dry chamomile flowers

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