Urea Containing Coated Cu and Zn: A Suitable Fertilizer for Healthier Growth of Rice and N-Uptake

Year 2018, Issue: 2, 159 - 166, 19.08.2018

Saima Kalsoom Babar Mohammad Khanif B. Yusop İnnayatullah Rajpar Naheed Akhtar Talpur

Abstract

Micronutrient deficiency is predominant globally
hence a hurdle to achieve healthy crop growth and ultimately the yield.
Malaysian acidic soils are also in same occurrence of micronutrient
insufficiency because of subsidized (macronutrients) fertilizer performs.
Repetitive fertilizer practices without retrieving nutrient contents in the
soil may result on the growth and quality of rice. In this regard a pot experiment
was organized on two soils; Kedah and Kelantan the main rice growing areas of
Malaysia. The aim was to evaluate the effects of Cu and Zn coated urea on rice
growth and N-uptake. Copper (at the rate of 3 & 5 kg ha^-1) Zn
(at the rate of 7 & 10 kg ha^-1) as single and combined together,
wrapped with coated and un-coated urea along with the suggested doses of NPK;
140, 70 and 70 kg ha^-1 respectively were applied. Application of
coated urea in combination of Cu and Zn had positive effect on all the growth
parameters, chlorophyll contents and N-efficiency in acidic soils. Mean
comparison between treatments showed, the significant effect of combined (Cu
and Zn) coated urea as compared to individual surface application of Cu and Zn.  The growth parameters increment was recorded
by 30-40% over control. Furthermore, the N, Cu and Zn contents in the soils
along with chlorophyll contents in rice plants were also increased
significantly (p<0.05) in combined Cu and Zn coated urea applied soils over
control. This increase in growth parameters is a confirmation of Cu and Zn
coated urea application for better rice yield.

Keywords

Coated urea , Copper , Zinc , Paddy , Acidic soils

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