sodininkystė ir daržininkystė 25(4)

18. Öåðëèíã Â. Â. Àãðîõèìè÷åñêèå îñíîâû äèàãíîñòèêè ìèíåðàëüíîãî
ïèòàíèÿ ñåëüñêîõîçÿéñòâåííûõ êóëüòóð. Ìîñêâà: Íàóêà, 1978. 216 ñ.
SODININKYSTË IR DARÞININKYSTË. SCIENTIFIC ARTICLES. 2006. 25(4).
EFFECT OF FOLIAR APPLIED IRON FERTILIZERS ON
NUTRITION, DEVELOPMENT AND YIELD OF
STRAWBERRY CV. ‘BOGOTA’
L. Buskienë, N. Uselis, J. Lanauskas
Summary
Effect of iron chelate and iron sulphate on strawberries of cv. ‘Bogota’ was
investigated at the Lithuanian Institute of Horticulture in 2003-2005. Strawberries
grown on alkaline soil were sprayed 8 times during growth season either with iron
chelate (Fe-EDTA) or iron sulphate (Fe 2
SO 4
) solutions at the concentration 0.5,
1.0 and 1.5 proc. Chemical leaf composition, plant development and yield were
evaluated. Iron chelate increased leaf iron content by 1.6–1.8 times, iron sulphate –
by 2.3–3.2 times in comparison with the control treatment where iron fertilizers
were not applied. After application of both fertilizers at 1.5 proc. concentration
solution nitrogen content in strawberry leaves was increased by 7.6–11.4 proc.,
whereas content of leaf calcium and manganese decreased respectively by 12.1
and 23.2–31.3 proc. Iron chelate improved plant state but neither iron chelate nor
sulphate had positive effect on strawberry plant growth and yield.
Key words: growth, strawberries, iron chelate, iron sulphate, berry weight,
yield.
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