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Effects of different organic materials on forage yield and quality of silage maize (Zea mays L.)

This study was conducted at the experimental area of the Field Crops Department of Çukurova University (37°01′N, 35°18′E) in the 2010 and 2011 growing seasons to determine the effects of sole or combined applications of 3 organic materials (poultry litter, cattle manure, and leonardite) with supplemental inorganic fertilizer on the forage yield and quality of silage maize. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2014) 38: 23-31 © TÜBİTAK doi:10.3906/tar-1302-62 http://journals.tubitak.gov.tr/agriculture/ Research Article Effects of different organic materials on forage yield and quality of silage maize (Zea mays L.) 1 2, 3 4 1 Recep İrfan NAZLI , Alpaslan KUŞVURAN *, İlker İNAL , Ahmet DEMİRBAŞ , Veyis TANSI 1 Department of Field Crops, Faculty of Agriculture, Çukurova University, Adana, Turkey 2 Kızılırmak Vocational High School, Çankırı Karatekin University, Çankırı, Turkey 3 Eastern Mediterranean Agricultural Research Institute, Adana, Turkey 4 Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çukurova University, Adana, Turkey Received: 15.02.2013 Accepted: 06.06.2013 Published Online: 13.12.2013 Printed: 20.01.2014 Abstract: This study was conducted at the experimental area of the Field Crops Department of Çukurova University (37°01′N, 35°18′E) in the 2010 and 2011 growing seasons to determine the effects of sole or combined applications of 3 organic materials (poultry litter, cattle manure, and leonardite) with supplemental inorganic fertilizer on the forage yield and quality of silage maize. The field trial was arranged in a complete randomized block design with 3 replications. Poultry litter (PL) and cattle manure (CM) were applied based on P or N requirements (PL-P, PL-N, CM-P, and CM-N) of the crop, whereas leonardite was applied in only 1 dose (500 kg ha–1) and was also combined with 3 inorganic fertilizer doses (100%, 75%, and 50% of the recommended inorganic fertilizer dose, called LEO-100, LEO75, and LEO-50, respectively). The results show that the highest values of dry matter (DM) and crude protein (CP) yields (18.3 t ha–1 and 1652 kg ha–1, respectively) were observed in LEO-100, whereas the lowest (11.2 t ha–1 and 758 kg ha–1, respectively) were observed in PL-N. In terms of forage quality parameters (CP, acid detergent fiber, neutral detergent fiber, and .