The Influence of Nitrogen Rates on Yield and Some Quality Parameters of Sweet Corn (Zea mays saccharata Sturt.) Growing in Diyarbakır Districts of Türkiye

Authors : Özlem Avşar, Betül Kolay, Ugur Bilge

Pages : 175-186

Doi:10.33462/jotaf.1491888

View : 65 | Download : 63

Publication Date : 2025-01-29

Article Type : Research Paper

Abstract :Sweet corn (Zea mays saccharata Sturt), is a maize subspecies with rapidly increasing consumption in the world and in Türkiye both in terms of its nutritional content and various uses in fresh, frozen and canned form. Nitrogen plays a crucial role in promoting most of plants growth and productivity. Plant nutrient recommendations are important to maximise profit and productivity in sugar maize production. The influences of nitrogen (N) fertigation on yield and some quality parameters of sweet corn under South Eastern Anatolia Region (Diyarbakır) conditions of Türkiye were investigated in that trial. Fertigation applications were executed under regional conditions of Diyarbakır on the experimental land of GAPUTAEM (GAP International Agricultural Research and Training Center). “BATEM Tatlı” variety of sweet corn was utilized as the plant material. The trial was arranged as randomized complete block design with 4 replications and five different N applications (0-75-150-225-300 kg ha−1) were implemented to trial plots through a fertigation system. During the 2015 and 2016 growing season that the trial was carried out a total of 520 mm and 476 mm of irrigation water were applied, respectively. According to the study results N levels had a significant effect on fresh grain yield, crude protein (p < 0.01) and crude oil (p < 0.05). Furthermore, increased N levels had no effect on brix (dissolved solids in a liquid), L* (brightness) and a*/b* (redness/yellowness) values. Fresh grain yield (11000 kg ha-1) of sweet corn under the effect of 150 kg ha-1 nitrogen treatment was the highest. The maximum crude protein (12.60) was recorded from 300 kg ha-1 N and crude oil (5.56) under the effect of 225 kg ha-1 nitrogen treatment was the highest. This study provides guidance for nitrogen management in sweet corn production in arid regions, such as the Southeast Region of Türkiye. Implementing 150 kg N ha-1 with a fertigation system is a sustainable method for sweet corn production.
Keywords : Azot, Fertigasyon, Tatlı mısır

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