Nihal KAYAN, İmren KUTLU, Nazife Gözde AYTER

Effects of Different Tillage and Soil Residual Nitrogen on Chickpea Yield under Wheat-Chickpea Rotation System in Central Anatolia Condition

Bu çalışmanın amacı, Orta Anadolu Bölgesi'nin kuru tarım alanlarında farklı toprak işleme yöntemleri ve buğdaya uygulanan azotun nohutta bitki boyu, ilk bakla yüksekliği, biyolojik verim ve tane verimi üzerindeki etkilerini incelemektir. Çalışmada, iki farklı toprak işleme yöntemi (geleneksel ve azaltılmış toprak işleme), üç ekim nöbeti sistemi (buğday-buğday, buğday-nadas; buğday-nohut) ve dört farklı azot dozu (0, 50, 100, 150 kg ha-1) dört yıl süresince (2012-2015) denenmiştir. Toprak işleme yöntemleri ana parsellere, ekim nöbeti sistemleri alt parsellere ve azot dozları alt-alt parsellere yerleştirilmiştir. Ekim nöbetinin etkisi buğday sonuçlarında incelenebilmektedir. Bu çalışmada sadece nohut sonuçları incelenmiştir. Bu nedenle, varyans analizleri bölünmüş parseller deneme desenine göre yapılmıştır. Nohut için farklı toprak işleme yöntemleri arasında incelenen özellikler açısından istatistiksel olarak anlamlı bir fark bulunmamakla birlikte, tane verimi geleneksel toprak işlemede azaltılmış işlemeye göre daha yüksek olmuştur. Buğdaya uygulanan azotun kalıcı etkisi incelenen bazı özellikleri ve nohutta tane verimini etkilemiştir ve 100 ve 150 kg ha-1 azot dozu nohutta tane verimini arttırmıştır. Elde edilen sonuçlara göre; buğday ile rotasyona giren nohut için geleneksel toprak işlemenin daha uygun olabileceği saptanmıştır. Buğdaya uygulanan farklı azot dozları, onu takiben nohutta tane verimini etkilemiştir.

Effects of Different Tillage and Soil Residual Nitrogen on Chickpea Yield under Wheat-Chickpea Rotation System in Central Anatolia Condition

The aims of the study were to determine, the effects of tillage system and soil residual nitrogen onchickpea plant height, first pod height, biological yield and grain yield in rotation with wheat under dry landcondition of Central Anatolia Region. In this study, two tillage methods (conventional and reduced tillage), threecrop rotations (wheat-wheat; wheat-fallow; wheat-chickpea) and four N levels (0, 50, 100, 150 kg ha-1) wereevaluated four years duration (2012-2015). Soil tillage methods were placed in to main plots, crop rotation in tosubplots and N levels in to sub-sub plots. The effect of crop rotation was investigated only in wheat results. Onlychickpea results were examined in this study. Therefore, the variance analyses were performed according to splitplot. There was no statistically significant difference in investigated properties between the two soil tillagemethods for chickpea but chickpea grain yield was higher for CT than RT. Residual fertilizer N was significantaffected chickpea grain yield and some investigated properties. 100 and 150 kg N ha-1 applied on wheat wereincreased grain yield in chickpea. Results also indicated that; conventional tillage may be more appropriate forchickpea in rotation with wheat. Different N doses applied to wheat influenced the grain yield of chickpeafollowing it.

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