Articles

Organic or conventional agriculture? A Study on yield and nutritional status of sweet corn


Abstract


Organic cultivation of field crops became popular in the last decades due to public awareness about the effects
of residual chemicals used in conventional farming systems on human health. Thus, we aimed to compare yield
and plant nutritional status of conventionally and organically grown sweet corn (Zea mays saccharata L., Jubilee
F1 cultivar) under Isparta, Turkey, ecological conditions. The effects of organic fertilization with leonardite (L) at
3 Mg ha-1, farmyard manure (FYM) at 30 Mg ha-1 and L + FYM application were compared with the conventional
cultivation (CC). Two year field experiments in completely randomized block design in triplicates were set up in
2012 and 2013 growing seasons. Fresh kernel samples were taken at milky maturing stage to reveal nutritional status
of sweet corn. The yield and yield components obtained for conventionally cultivated corn were significantly
higher than the organically cultivated ones. As the yield and yield components considered, L+FYM treatment was
the best performing of the organic treatments and it was comparable to CC for some traits. Nitrogen deficiency
was the critical problem of the organic treatments whereas there were also milder deficiencies of other nutrient
elements. It can be concluded that despite smaller amounts of yield, the organic farming may be considered for
the healthier sweet corn.


Keywords

Farm yard manure, leonardite, organic farming, sweet corn

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Maydica - A journal devoted to maize and allied species

ISSN: 2279-8013