Hikmet Soya

Effects of previous legume crop levels of nitrogen and sowing date on yield components and some morphological characteristics of corn

This study was conducted in order to determine the effect of different previous crops and sowing dates on the grain yield and some other yield components of corn under typical Mediterranean climatic conditions during summer period of 2013 and 2014. The experiment was laid out in a split-plot design in the form of randomized complete blocks with three replications. The main plots were allocated to three sowing dates (Early Spring, Mid Spring and Late Spring) and sub-plots to previous crops (Vicia sativa, Vicia villosa, Lathyrus sativus, Trifolium resupinatum and Pisum arvense) and three different controls without previous crop (control-1: 100 kg ha-1 N; control-2: 200 kg ha-1 N and control-3: 0 kg ha-1 N). Corn grain yield, yield components (number of ears per plant, number of seeds per ear, ear length, ear diameter, 1000-grain weight) and plant height were assessed. The results showed that late planting date had a significantly negative effect on tested traits and second planting date (mid- spring) produced higher corn grain yield compared to the other dates. The highest corn grain yield (11011 kg ha-1) also occurred in control-2 (200 kg ha-1 N without previous crop) treatment and was significantly different from the other previous crop treatments with 100 kg ha-1 N and controls except Vicia villosa as previous legume crop of which corn grain yield was comparable with it.

Ege Bölgesi Koşullarında Bazı Mısır(Zea mays L.) Çeşitlerinin Silaj Kalite Özellikleri Üzerinde Bir Araştırma1

B u calisma Ege Universitesi Ziraat Fakultesi Tarla Bitkileri Bolumu ve Odemis Meslek Yuksekokulu’nun deneme tarlalarinda 2005 ve 2006 yillarinda, ana urun yetistirme sezonunda yurutulmustur. Denemede, misir bitkisinin CT-1, Helen, C-955, Brasco cesitleri kullanilmis ve bu cesitlerin iki farkli toprak yapisina sahip lokasyonlarda gostermis olduklari silaj kalite ozellikleri (silaj kaybi, silaj kuru madde orani, silaj pH’si, Flieg puani, renk, koku, struktur ve DLG puani) incelenmistir. Arastirma sonuclari, genel olarak silaj kalitesi bakimindan lokasyonlar ve misir cesitleri arasinda onemli farkliliklar bulunmadigini gostermistir

İzmir İli Farklı Lokasyon Koşullarında Kimi Mısır (Zea mays L.) Çeşitlerinin II.Ürün Olarak Tane Verimi ve Bazı Verim Özellikleri Üzerinde Bir Araştırma

This research was conducted in the experimental fields of Field Crops Deparment and Odemis Training College, Ege University in 2005-2006. Different maize cultivars (Brasco, C-955, CT-1, Helen) grown as second crop under mediterranean coastal conditions were tested for grain yield and yield components. For this aim, traits such as duration of tasselling, days of ripening, number of ear per, ear lenght, ear diameter, number of row per ear and grain yield properties were determined. C-955 and CT-1 corn cultivar had the highest grain yield and most promising cultivars for the location. It was concluded that one of the cultivars should be chosen their seed prices