Title: Effect of Zinc Humate on Growth of Soybean and Wheat in Zinc‐Deficient Calcareous Soil
Abstract: Abstract Humic acids have many benefits for plant growth and development, and these effects may be maximized if these materials are combined with micronutrient applications. In the present study, pot experiments were conducted to evaluate the effects of zinc (Zn) humate and ZnSO4 on growth of wheat and soybean in a severely Zn‐deficient calcareous soil (DTPA‐Zn: 0.10 mg kg−1 soil). Plants were grown for 24 (wheat) and 28 days (soybean) with 0 or 5 mg kg−1 of Zn as either ZnSO4 or Zn humate. Zinc humate used in the experiments was obtained from Humintech GmbH, Germany, and contained 5% of Zn. When Zn was not supplied, plants rapidly developed visible symptoms of Zn deficiency (e.g., chlorosis and brown patches on young leaves in soybean and necrotic patches on middle‐aged leaves in wheat). Adding Zn humate eliminated Zn‐deficiency symptoms and enhanced dry matter production by 50% in soybean and 120% in wheat. Zinc‐humate and ZnSO4 were similarly effective in increasing dry matter production in wheat; but ...
Publication Year: 2006
Publication Date: 2006-06-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 52
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