Author/Authors :
KORKMAZ, Kürsat Ordu Üniversitesi - Ziraat Fakültesi - Toprak ve Bitki Besleme Bölümü, Turkey , IBRIKCI, Hayriye Çukurova Üniversitesi - Ziraat Fakültesi - Toprak ve Bitki Besleme Bölümü, Turkey , ÜLGER, Ahmet Can Çukurova Üniversitesi - Ziraat Fakültesi - Tarla Bitkileri Bölümü, Turkey , BÜYÜK, Gökhan Adıyaman Üniversitesi - Kahta Meslek Yüksek Okulu, Turkey , KARNEZ, Ebru Çukurova Üniversitesi - Ziraat Fakültesi - Toprak ve Bitki Besleme Bölümü, Turkey , ÇAKIR, Bülent Çukurova Tarımsal Arastırma Enstitüsü, Turkey , OZGENTURK, Gönül Adıyaman Üniversitesi - Kahta Meslek Yüksek Okulu, Turkey , KONUSKAN, Ömer Mustafa Kemal Üniversitesi - Ziraat Fakültesi - Tarla Bitkileri Bölümü, Turkey , RYAN, John International Center for Agricultural Research in the Dry Areas (ICARDA), Syria
Abstract :
Nitrogen fertilizer, an important and costly input for corn production, has been extensively used to maize (Zea mays L.) Use of nitrogen has become an important issue because of rising prices and environmental concerns with high amount of nitrogen applied in agricultural production. In this study carried out to light on the use of fertilizer, relationship between plant and N in different growth stages was examined. Therefore, field experiments were conducted in 1999 and 2000 in Çukurova region, 10 hybrid maize genotypes (C6127, DK626, XL72AA, DK623, DRACMA, LG60, P32K61, P3395, P3394 and TTM815) were used as plant material and three different growth stages (6. (7-9 leaves), 8. (pollination) and 11. (dough stage) were sampled. Plant’s shoot weight was between 5.40-376.20 g plant^-1 and root weight 0.77-45.03 g plant^-1. Nitrogen concentrations were between 0.70-3.40% in shoot and 0.40^-1.71% in root. The highest plant dry weight was obtained in TTM815 while the lowest plant dry weight was obtained from C6127 genotype and highly significant differences were observed among the varieties. Evaluated periodically, the highest plant’s dry weight was obtained 137.72 g plant- 1 in the second sampling period. On average, the highest nitrogen concentration was obtained as 3.95% in the first period and the lowest 1.90% in the third period. In nitrogen fertilization for maize, application time of nitrogen and genotypic differences are important to decrease economical and environmental losses.
