Evaluation of chlorophyll meter use for optimisation of sugar beet nitrogen fertilizing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F05%3A11006" target="_blank" >RIV/60460709:41210/05:11006 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Evaluation of chlorophyll meter use for optimisation of sugar beet nitrogen fertilizing

Original language description

The aim of our work is to determine if it is possible to use changes in chlorophyll content (SPAD values measured by chlorophyll meter SPAD-502) for sugarbeet plants? nutrient state evaluation and for optimisation of nitrogen fertilizing. We have determined a positive correlation between nitrogen fertiliser rate and SPAD values in all growth stages. The strongest correlations between SPAD values and nitrogen concentration in dry leaf blades were found in plants with 8-15 true leaves (r2 = 0,77++ a 0,59+). The results from small-plot trial were verified by plants with 4-8 true leaves grown under agricultural field conditions, but we did not confirm the correlation between SPAD values and nitrogen concentration in leaves during any of the years. These results mean that chlorophyllmeter SPAD-502 is not accurate enough for sugar beet nutrient state determination in early growth stage (4-8 true leaves) and for nitrogen rate optimisation for additional fertilizing under agricultural field co

Czech name

Vyhodnocení použití chlorofylmetru pro optimalizaci dusíkatého hnojení u cukrovky

Czech description

The aim of our work is to determine if it is possible to use changes in chlorophyll content (SPAD values measured by chlorophyll meter SPAD-502) for sugarbeet plants? nutrient state evaluation and for optimisation of nitrogen fertilizing. We have determined a positive correlation between nitrogen fertiliser rate and SPAD values in all growth stages. The strongest correlations between SPAD values and nitrogen concentration in dry leaf blades were found in plants with 8-15 true leaves (r2 = 0,77++ a 0,59+). The results from small-plot trial were verified by plants with 4-8 true leaves grown under agricultural field conditions, but we did not confirm the correlation between SPAD values and nitrogen concentration in leaves during any of the years. These results mean that chlorophyllmeter SPAD-502 is not accurate enough for sugar beet nutrient state determination in early growth stage (4-8 true leaves) and for nitrogen rate optimisation for additional fertilizing under agricultural field co

Type

D - Article in proceedings

CEP classification

GD - Fertilization, irrigation, soil treatment

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

XL. Croatian Symposium on Agriculture

ISBN

953-6331-31-4

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

433-434

Publisher name

Faculty of Agriculture, University of J.J. Strossmayer u Osijek

Place of publication

Osijek, Chorvatsko

Event location

Opatija, Chorvatsko

Event date

Feb 15, 2005

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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