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Visser, S.A. (1986) Effetto delle sostanze umiche sulla crescita delle piante. In: Burns, R.G., Dell’Agnola, G., Miele, S., Nardi, S., Savoini, G., Schnitzer, M., Sequi, P., Vaughan, D. and Visser, S.A., Eds., Sostanze Umiche. Effetti sul Terreno e sulle Piante, Ramo Editoriale degli Agricoltori, Roma, 96-143.

has been cited by the following article:

• TITLE: The Effect of Sulfur-Containing Humic Acid on Yield and Nutrient Uptake in Olive Fruit

  AUTHORS: Atoosa Danyaei, Sara Hassanpour, Mohammad Ali Baghaee, Maryam Dabbagh, Mehrdad Babarabie

  KEYWORDS: Humic Acid, Olive, Sulfur, Yield

  JOURNAL NAME: Open Journal of Ecology, Vol.7 No.4, April 26, 2017

  ABSTRACT: The combined application of organic and mineral fertilizers can be a proper way of nutrition management to increase the yield and quality and to mitigate environmental impacts of chemicals and the pertaining costs. The impact of different rates of sulfur-containing humic acid was studied on yield and nutrient uptake of the fruits of olive “Zard” three-year-old trees in a trial based on a Randomized Complete Block Design with three replications in Shariati College of Tehran, Iran. The studied treatment was sulfur-containing humic acid at four rates of 0, 20, 25 and 30 kg⋅ha−1, which was applied at two stages. The highest fresh weight, dry weight, chlorophyll b, carotenoid, N and Cu contents were related to humic acid rate of 20 kg⋅ha−1. The highest fruit length, chlorophyll a and total chlorophyll were observed in control. The highest K, Fe and Mn contents were obtained from plants treated with 30 kg⋅ha−1 humic acid. Plants treated with 25 kg⋅ha−1 exhibited the highest P and Zn contents. All in all, the application of sulfur-containing humic acid at different rates had favorable impacts on quantitative and qualitative traits of olive fruits.