Ayşe DELİGÖZ

Anadolu Karaçamı (Pinus nigra ssp. nigra Arn. var. caramanica (Loudon) Rehder) Fidanlarında Sonbahar Gübrelemesi

Bu çalışmada sonbaharda uygulanan azot gübrelemesinin 2+0 yaşlı Anadolu karaçamı (Pinus nigra ssp.

Anahtar Kelimeler:

Anadolu karaçamı, azot gübrelemesi, morfoloji, boy gelişimi

Fall Fertilization in Anatolian Black Pine (Pinus nigra ssp. nigra Arn. var. caramanica (Loudon) Rehder) Seedlings

In this study, the effects of fall nitrogen fertilization on nitrogen concentration and early height growthafter planting with quality of two year old Anatolian black pine (Pinus nigra ssp. nigra Arn. var. caramanica(Loudon) Rehder) seedlings were investigated. Bareroot Anatolian black pine seedlings in Eğirdir ForestNursery were fertilized with ammonium sulfate [(NH4)2SO4] at 0, 5, 10 and 20 N g/m² between September 28and October 18. Seedling morphological characteristics and needle nitrogen concentration were determined oneweek after fertilization (October 2009) and before planting (March 2010). Seedlings were planted in the field inearly march and evaluated early height growth and needle nitrogen concentration two months after planting.According to results, in the nursery stage, fall nitrogen fertilization had significant effect on needle nitrogenconcentration, but had no significant effects on seedling morphological characteristics. Needle nitrogenconcentration was increased by the fall fertilization compared to control (0 g N/m²). When measured at twomonths after planting, height increments of seedlings fertilized with high nitrogen rate (10 g N/m² and 20 gN/m²) were higher than the others. The effects of 10 and 20 g N/m² treatments are similar. Therefore, fallfertilizer applications with 10 g nitrogen per square meter may be useful to height growth, can be safely said atthis stage. However, the study period was quite insufficient to make recommendations on planting performance.

Keywords:

Anatolian black pine, nitrogen fertilization, morphology, height growth,

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