FARKLI YAPRAK GÜBRELERİNİN MARUL (Lactuca sativa L.) 'DA VERİME, KLOROFİL VE BAZI BESİN MADDELERİ İÇERİĞİNE ETKİSİ

Abstract

OZET : Bu arastirma, ilkbahar ve sonbahar donemlerinde uretilen marulda bazi yaprak gubrelerinin etkilerini belirlemek amaciyla yapilmistir. Denemede, ulkemiz sebze yetistiriciliginde kullanilan Nutri-leaf, Polarosate, Nitrozyme, Bayfolan, Vitaminate, Ure, Phosamco 4 ve Nutramin yaprak gubreleri kullanilmistir. Yaprak gubreleri her iki yetistirme doneminde de sabah saat 8.30 sirasinda ve toplam her donemde 3'er kez uygulanmistir. Hasat sirasinda bas agirligi ve yaprak sayisi belirlenerek, alinan bikisel orneklerde klorofil a, klorofil b, pH, N, P, K, Ca, Fe ve Mg analizleri yapilmistir. Arastirmadan elde edilen sonuclar su sekilde ozetlenebilir. 1- Hem ilkbahar hem de sonbahar doneminde yetistirilen marullarda en iyi verim Bayfolan yaprak gubresi uygulamasindan elde edilmistir. 2- En fazla yaprak sayisinin ilkbahar doneminde Polarosate, sonbahar doneminde ise Nutramin uygulamasinda meydana geldigi bulunmustur. 3- Klorofil a miktari ilkbahar ve sonbahar doneminde Polarosate uygulamasinda, klorofil b miktari ise ilkbahar doneminde Nutri-leaf, sonbahar doneminde ise Nitrozyme uygulamasinda en yuksek degere ulasmistir. 4- pH degerinin her iki donemde de yaprak gubresi uygulamalarina gore istatistiki bir fark meydana gelmemistir. 5- Ilkbahar doneminde N ure, P ve Ca Bayfolan, K Nitrozyme, Mg Vitaminate, Fe ise Polarosate uygulamasinda; sonbahar doneminde ise N ve P Bayfolan, K Nutri-leaf, Ca Nitrozyme, Mg Vitaminate ve Fe Polaerosate uygulamalarinda en fazla olmustur. THE EFFECT OF FOLIAR FERTILIZERS ON YIELD, CHROROPHYLL AND CHEMICAL CONTENT OF LATTUCA (Lactuca Satvia L.) SUMMARY : This research was carried out to determine the effects of different foliar fertilizers on yield, chlorophyll and chemical content of lattuca (Lactuca sativa L.) grown in spring and autumn seasons in 1992. In the experiment, Nutri-leaf, polarosate, Nitrozyme, Bayfolan, Vitaminate, ure, Phosamco 4 and Nutramin were used as foliar fertilizers. In both season, foliar fertilizers were sprayed three times at about 8.30 in the morning. When experiments was terminated, the weight of head and number of leaves were determined. In the leaf samples, chlorophyll a, chlorophyll b, pH, N, P, K, Ca, Fe and Mg content were determined. The results of the experiment can be summarized as follows : 1- In both spring and autum seasons, the highest yield was obtained with Bayfolan foliar fertilizer. 2- The highest number of leaves obtained in spring by Polarosate application whereas in autumn by Nutramin application. 3- Chlorophyll a content was the highest in Polarosate applications in both seasons. But chlorophyll b content was the highest in Nutri-leaf application in spring; whereas Nitrozyme application in autumn season. 4- pH value was not significantly influenced by foliar fertilizers and growing seasons. 5- In the spring, the highest N content occured in Urea, whereas P and Ca in Bayfolan, K in Nitrozyme, Mg in Vitaminate, Fe in polarosate applilcations. On the other hand, N and P in Bayfolan, K in Nutri-leaf, Ca in Nitrozyme, Mg in Vitaminate and Fe in Polarosate applications were the highest in autumn season.