ÖZKAN, Ali Kilis 7 Aralık Üniversitesi - Fen-Edebiyat Fakültesi - Biyoloji Bölümü, Turkey , ÜLGER, Ahmet Can Çukurova Üniversitesi - Ziraat Fakültesi - Tarla Bitkileri Bölümü, Turkey

The Effects of Different Nitrogen Dose Applications on the Agricultural Properties of two Popcorn (Zea mays L. everta Sturt) Cultivars under Çukurova Ecological Conditions

38586

This study was carried out to determine the effects of different nitrogen doses (0, 5, 10, 15, 20, 25, 30 kg N/da) on the agricultural properties of two popcorn cultivars (Ant Cin 98 and Nermin Cin) during cultivation season of 2003 and 2004 under Çukurova ecological conditions. The experiment was conducted in 4 replicates according to a split-plot design. The difference between nitrogen doses, number of grains per cob, weight of grain per cob and ratio of grain per cob was not statistically significant. However, nitrogen doses were found to be effective on the grain yield and plant height. But it is noteworthy that while there was an increase up to a certain dose grain yield and plant height., it started to decrease after this amount. According to the two-year averages, the highest grain yield was obtained with the 499 kg/dose of nitrogen N25 in Nermin-cin cultivar. Higher grain yield values were obtained in Nermin-cin than Ant cin 98 cultivar in all nitrogen applications. As a consequence, it is found that Nermin-cin cultivar was appropriate for this region and nitrogen doses of 20 kg N/ha was recommended for this cultivar.

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Popcorn , Zea mays L. everta Sturt. , grain yield , grain weight per cob , number of grain per cob

Yuzuncu Yil University Journal Of Agricultural Sciences

208