Effect of Humisol on survival and growth of nursery grafted walnut (Juglans regia L.) plants

S.M. Paunović, R. Miletić, D. Janković, S. Janković and M. Mitrović
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S.M. Paunović: Fruit Research Institute, Čačak, Serbia
R. Miletić: Fruit Research Institute, Čačak, Serbia
D. Janković: Department of Pomology, Faculty of Agriculture, University of Pristina, Lešak, Serbia
S. Janković: Department of Pomology, Faculty of Agriculture, University of Pristina, Lešak, Serbia
M. Mitrović: College of Professional Studies in Agriculture, Šabac, Serbia

Horticultural Science, 2013, vol. 40, issue 3, 111-118

Abstract: The effect of Humisol organic fertiliser (150 g humic acid/l + 20 g/l mineral nutrients) on plant survival and growth of five walnut cultivars grown over a period of two years in the nursery were evaluated. Walnut plants treated with Humisol at the total annual rate of 0.75 ml/plant had a significantly higher survival rate in the first year, greater height and diameter in both years, and a higher percentage of first-class plants at the end of the second year, as compared to untreated control plants. Soil application of Humisol led to better performance of nursery grafted plants, compared to foliar application. Nursery plants receiving 1.5 ml Humisol per year through both soil and foliar application exhibited the best performance in the parameters analysed. In the first year, a decrease in plant growth rate in all treatments was observed in August and September; in the second year, growth rate started to significantly decline in the second half of August.

Keywords: humic acid; fertilisation; soil application; foliar application (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlhor:v:40:y:2013:i:3:id:78-2013-hortsci

DOI: 10.17221/78/2013-HORTSCI

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