Determination of the effects of some heavy metals (Cu and Zn) on the yield and toxicity of bread wheat in field conditions
Abstract
The storage of hazardous waste, reprocessing, use, handling and disposal of control, health, environmental protection, natural resource management and is important for sustainable development. Plants due to toxic heavy metals accumulate in the body to receive and enter the food chain restriction and their developments are the cause of human health threat. Study aimed at determining, the effect of various potential toxic heavy metals (Cu ve Zn) on the yield and growth of wheat in field condition; metal toxicity in soil; critical toxic concentration and toxicity symptoms; DTPA-extracted and total heavy metals being applied. Elucidating possible relations between soil applied metals and pre-existed metals in soil, treatments and plant-metal concentrations were also among the objectives of the study. Water soluable forms of heavy metals (sulfate) were applied to soil then, a wheat-chickpea rotation system was followed. Gün–91 wheat and Gökçe chickpea species were used as test plants. Experiment was designed as a fixed randomized blocks with 3 replications and 7 elements. Metals being applied are; 20, 4, 60 mg Cu kg-1 and 50, 100, 200 kg Zn da-1. Cu was determined to be toxic in the first year. Soil-applied Cu doses of 18,5 kg da-1 was observed to bring about 10 % decrease in maximum yield. Critical Cu level was not attained in wheat foliar. 6,6 mg kg-1 Cu in grain and 335 mg kg-1 Cu in soil were identifed to be critical concentration and resulted in 10 % subsidence in the maximum yield of wheat grain. As the soil-applied Cu increased, so did total Cu in soil, DTPA-extracted Cu, Cu concentration in wheat foliar and wheat grain. Increases were noted to be statistically significant. In second years wheat Cu and Zn didn’t create differences to the extent that it could be noted in wheat yield. Toxicity of Cu and Zn, which were only applied in the first year of the experiment, dissappeared at the third wheat growing period.
Keywords
Kaynakça
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Ayrıntılar
Birincil Dil
Türkçe
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yazarlar
İlknur Yurdakul
*
Bu kişi benim
Kadriye Kalınbacak
Bu kişi benim
Dilek Terzi
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Remzi Murat Peker
Bu kişi benim
Yayımlanma Tarihi
16 Aralık 2017
Gönderilme Tarihi
19 Temmuz 2017
Kabul Tarihi
-
Yayımlandığı Sayı
Yıl 2017 Cilt: 6 Sayı: 2