Changes in Soil Ergosterol Content, Glomalin-Related Soil Protein, and Phospholipid Fatty Acid Profile as Affected by Long-Term Organic and Chemical Fertilization Practices in Mediterranean Turkey
ARID LAND RESEARCH AND MANAGEMENT, cilt.29, sa.2, ss.180-198, 2015 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 29 Sayı: 2
- Basım Tarihi: 2015
- Doi Numarası: 10.1080/15324982.2014.944246
- Dergi Adı: ARID LAND RESEARCH AND MANAGEMENT
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.180-198
- Anahtar Kelimeler: phospholipid fatty acids, organic fertilization, glomalin, soil fungi, ergosterol, arbuscular mycorrhiza, ARBUSCULAR MYCORRHIZAL FUNGI, MICROBIAL COMMUNITIES, AGRICULTURAL MANAGEMENT, AGGREGATE STABILITY, ENZYME-ACTIVITIES, COMPOST ADDITION, NUTRIENT-UPTAKE, CROP-ROTATION, CARBON, BIOMASS
- Çukurova Üniversitesi Adresli: Evet
Özet
The present study examines the effects of different fertilization treatments (chemical fertilization, farmyard manure, plant compost, and mycorrhiza-inoculated compost) on the soil fungi under a crop rotation of wheat (Triticum aestivum L.) and corn (Zea mays L.) in a long-term field experiment established in Mediterranean Turkey in 1996. Soil samples were collected in May, August, and October 2009. Soil pH, organic carbon, plant-available nitrogen and phosphorus, mycorrhizal colonization, and a series of biochemical markers (phospholipid and neutral lipid fatty acid [PLFA and NLFA] profiles, soil ergosterol content, and glomalin related soil protein [GRSP] as indicators of abundance of bacteria, saprotrophic, and arbuscular mycorrhizal [AM] fungi) were assessed. No significant difference was observed in soil organic C and plant available N in relation to long-term fertilization treatments, but plant available P in soil changed significantly in relation to the fertilization treatment used and the sampling season (between 11.5-33.8mg center dot kg(-1) in spring, 10.4-28.6mg center dot kg(-1) in summer, and 10.5-33.2mg center dot kg(-1) in autumn). Mycorrhizal colonization patterns were similar for both plants. However, mycorrhiza-inoculated compost treatment exhibited higher root colonization (77.3%) over control (16.3%), chemical fertilization (10.0%), farmyard manure (19.3%), and plant compost (20.0%). No statistically significant change was observed in ergosterol content. The effect of long-term organic treatments on soil PLFA structure was statistically prominent; whereas seasonality only affected bacterial PLFAs. Organic fertilization increased GRSP (mean annual ranging from 0.91 to 2.46mg center dot g(-1) total GRSP) but long-term annual mycorrhizal inoculation had no significant effect on the soil GRSP pool.