Author/Authors :
KARASAHIN, Muhammet Karabuk University - Eskipazar Vocational School - Department of Plant and Animal Production, Turkey
Abstract :
This research was conducted to determine the effects of organic and inorganic fertilizer treatments (organic, inorganic, ½ organic + ½ inorganic) on plant and silage crude protein contents of hybrid corn cultivars (PR 31Y43, OSSK-644 and Lacasta) in the years 2011 and 2012 under the ecological conditions of Eskipazar-Karabük. The fertilizer treatments were statistically significant on plant crude protein ratio and plant crude protein yield in both research years. The highest values were obtained from inorganic (10.5, 7.0 and 1.96, 1.67 respectively) and ½ organic + ½ inorganic (9.1, 6.7 and 1.53, 1.52 respectively) fertilizer treatments. The fertilization treatments x hybrid corn cultivars interactions were statistically significant on the plant and silage crude protein in the first research year. The highest plant crude protein was obtained from ½ organic + ½ inorganic x Lacasta interactions and from Lacasta, OSSK-644 and PR 31Y43 interactions of the inorganic fertilizer treatments (11.0, 10.7, 10.6 and 10.2 respectively). On the other hand, the highest silage crude protein was obtained from ½ organic + ½ inorganic x Lacasta and inorganic x Lacasta interactions (9.4 and 9.2 respectively). As a result of the research, high protein yields obtained from PR 31Y43 corn cultivar and inorganic, ½ organic + ½ inorganic fertilizer treatments. When we consider the sums paid for the export of inorganic fertilizers and the negative effects of these inorganic fertilizers on human and environmental health, we may see that ½ organic + ½ inorganic fertilizer treatments would be preferable in the silage corn growing.
