The Effect of Polyvinyl Alcohol Application on Soil Physical Properties and Development of Corn Plants (Zea mays L.)

Öz

This study was conducted to determine the effects of polyvinyl alcohol (PVA), an artificial organic polymer, addition to coarse, medium and fine textured soils on soil structure stability and development of corn (Zea mays L.). In the research, surface soil samples taken from 0-20 cm soil depth were used. In pot experiments conducted in laboratory conditions, at the end of 60 days plant growing period on soil samples with and without polyvinyl alcohol addition, physical properties of the soil, such as bulk density, aggregate stability, dispersion rate, average weight diameter and water permeability were determined. From the biomass characteristics of the corn plant grown in the experiment, the plant height, stem diameter, wet and dry weight parameters were determined. The results of this study indicated that the addition of PVA resulted in a decrease in soil mass density, dispersion rate, average weight diameter, and increase in aggregate stability and water permeability. On the other hand, it has been also found that PVA application had indirectly positive effects on length, stem diameter, wet and dry weight values of the corn plant grown, accordingly.

Anahtar Kelimeler

• Aggregate stability,polyvinylalcohol (PVA),soil structure

Polivinil Alkol Uygulamasının Toprak Fiziksel Özellikleri ve Mısır Bitkisi (Zea mays L.) Gelişimi Üzerine Etkisi

Öz

Bu araştırma, yapay organik polimerlerden polivinil alkol (PVA)’ün kaba, orta ve ince bünyeli topraklara ilavesinin, toprak strüktür stabilitesi ve mısır bitkisinin (Zea mays L.) gelişimi üzerindeki etkilerini belirlemek amacıyla yürütülmüştür. Araştırmada, 0-20 cm toprak derinliğinden alınan yüzey toprak örnekleri kullanılmıştır. Laboratuvar koşullarında yürütülen saksı denemesinde polivinil alkol ilaveli ve ilavesiz toprak örnekleri üzerinde sürdürülen 60 günlük bitki yetiştirme periyodu sonunda toprağın fiziksel özelliklerinden, kütle yoğunluğu, agregat stabilitesi, dispersiyon oranı, ortalama ağırlık çapı ve su geçirgenliği tayin edilmiştir. Denemede yetiştirilen mısır bitkisinin biyokütle özelliklerinden bitki boyu, gövde çapı, yaş ve kuru ağırlık parametreleri belirlenmiştir. Araştırma sonucuna göre, PVA ilavesinin toprak kütle yoğunluğunda, dispersiyon oranında, ortalama ağırlık çapında azalmaya, agregat stabilitesinde ve su geçirgenliğinde artışa neden olduğu kaydedilmiştir. Diğer taraftan PVA uygulamasının mısır bitkisinin; uzunluğu, gövde çapı, yaş ve kuru ağırlık değerleri üzerinde dolaylı olarak olumlu etkilerde bulunduğu tespit edilmiştir.

Anahtar Kelimeler

• Polivinil alkol (PVA),Toprak strüktürü

Kaynakça

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