MAIZE ROOT DEvELOPMENT DEPENDING ON THE DEPTH OF FERTILIZER APPLICATION TO THE SOIL
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Abstract
Reduced technologies of maize production are becoming more
and more popular due to lowering of production costs and positive
effects on soil characteristics. As a stage of creating new simpli-
fied technology of maize production testing of granular fertilizer
UreaPhos(Mikro) in two sizes (standard granules and big granules)
had to be performed. Root-box experiment was conducted in 2014
and 2015 to evaluate the effects of placing fertilizer in the follow-
ing depths: standard granules placed on 2, 5 and 8 cm under maize
caryopsis and big granules placed on 20, 25 and 30 cm depth. Each
sampled seedling was cut in 43-day into a shoot and root system.
The samples of roots were manually washed using a sieve. Mor-
phological traits of roots, such as root length, root surface area,
root diameter, were determined with a digital image root analyzer
(Delta T Scan, Delta T Co., England). Fresh matter and dry matter
of shoot and root were measured. The experiment revealed that the
best parameters of root traits were obtained in root-box 5+25 cm
and 2+25 cm. Therefore, recommended depth of placing new fertil-
izer UreaPhos(Mikro) in the soil is 25 cm for big granules and 2 or
5 cm for standard granules.
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