BİYOKÖMÜR VE POLİAKRİLAMİD’İN DONMA VE ÇÖZÜNME DÖNGÜSÜNDE TOPRAKLARIN AGREGAT STABİLİTESİ VE SU TUTMA KAPASİTESİ ÖZELLİKLERİ ÜZERİNE ETKİSİ

Yıl 2021, Cilt: 17 Sayı: 2, 286 - 301, 24.12.2021

Muhittin Göçük Yasin Demir

Öz

Toprakların oluşum ve karakterizasyonu üzerine iklimin önemli bir etkisi vardır. Yağış, nem, kar ve don gibi iklim olayları toprakların birçok fiziksel, kimyasal ve fiziksel özellikleri üzerine doğrudan ya da dolaylı olarak etki yapmaktadır. Gerek iklim gerekse yanlış tarım uygulamaları neticesinde bozulan toprak özelliklerini iyileştirmek için günümüzde bazı organik ve inorganik toprak katkı maddeleri kullanılmaktadır. Son zamanlarda toprakların fiziksel, kimyasal ve biyolojik özelliklerini korumak veya iyileştirmek için biyokömür (Bc) ve poliakrilamid (PAM) maddeleri kullanılmaktadır. Bu çalışmanın amacı, artan dozlarda toprağa karıştırılan Bc ve PAM maddelerinin donma ve çözünme (DÇ) döngüsünde toprakların agregat stabilitesi (AS), hacim ağırlığı (Db), tarla kapasitesi (TK) ve solma noktası (SN) özellikleri üzerine olan etkisini belirlemektir. Bu amaçla 0 (kontrol), 2 gr.kg-1, 4 gr.kg-1 ve 8 gr.kg-1 dozlarında hazırlanan toprak-Bc ve toprak-PAM karışımları inkübasyon süreci sonrasında 5, 10 ve 15 defa DÇ döngüsüne maruz bırakılmıştır. Çalışma sonucunda yapılan analizlerde Bc ve PAM katkılı topraklarda DÇ döngüsü arttıkça TK ve AS nin azaldığı tespit edilmiştir (p<0.05). Bununla birlikte PAM katkılı topraklarda, doz miktarı arttıkça TK ve AS’nin arttığı belirlenmiştir (p<0.05). Toprakların Db ve SN özellikleri ise uygulamalardan istatistiksel olarak etkilenmemiştir. DÇ nin TK ve AS üzerine olan olumsuz etkisini, uygulanan her iki toprak katkı maddesinin de önlemediği saptanmıştır.

Anahtar Kelimeler

Donma-çözünme, biyokömür, poliakrilamid, agregat stabilitesi

Destekleyen Kurum

Bingöl Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü

Proje Numarası

BAP-ZF. 2019.00.003

Kaynakça

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