Dynamics of SPAD Index, Leaf Pigment, and Macronutrient Relationships in Sugar Beet Leaves Under Spring Nitrogen Fertilization DOI Creative Commons
Ivana Varga, M. Pospíšil, Dario Iljkić

et al.

Nitrogen, Journal Year: 2025, Volume and Issue: 6(1), P. 10 - 10

Published: Feb. 18, 2025

Nitrogen fertilization greatly affects the development of sugar beet leaf and photosynthetic activity. This study aimed to evaluate dynamics SPAD index, chlorophyll a (Chl a), b b), carotenoids (Caro), macronutrient status (N, P, K, Na, Mg) in different N rates production. set up two-year field experiment Eastern Croatia. The rate was applied as: N0—control, N1—only presowing (45 kg/ha), N2—presowing with topdressing (99 kg/ha 2014 85.5 2015). In general, has significant (p ≤ 0.05) influence on pigments, except for Chl b. With highest dose (N2), content leaves increased by 12% compared control treatment (0.75 mg/g FW). Caro vegetative growth were significantly 0.05); younger stage at end May had (0.011 index 0.05), among fertilization, whereas lowest found (38.7) N2 (40.8). regarding nitrogen readings (38.7), determined A strong positive relationship 0.01) a, b, + b/Caro an inverse a/b. results demonstrate that application, particularly higher rates, positively influences carotenoid content, as well overall plant health, which can inform agricultural practices more sustainable efficient cultivation.

Language: Английский

Dynamics of SPAD Index, Leaf Pigment, and Macronutrient Relationships in Sugar Beet Leaves Under Spring Nitrogen Fertilization DOI Creative Commons
Ivana Varga, M. Pospíšil, Dario Iljkić

et al.

Nitrogen, Journal Year: 2025, Volume and Issue: 6(1), P. 10 - 10

Published: Feb. 18, 2025

Nitrogen fertilization greatly affects the development of sugar beet leaf and photosynthetic activity. This study aimed to evaluate dynamics SPAD index, chlorophyll a (Chl a), b b), carotenoids (Caro), macronutrient status (N, P, K, Na, Mg) in different N rates production. set up two-year field experiment Eastern Croatia. The rate was applied as: N0—control, N1—only presowing (45 kg/ha), N2—presowing with topdressing (99 kg/ha 2014 85.5 2015). In general, has significant (p ≤ 0.05) influence on pigments, except for Chl b. With highest dose (N2), content leaves increased by 12% compared control treatment (0.75 mg/g FW). Caro vegetative growth were significantly 0.05); younger stage at end May had (0.011 index 0.05), among fertilization, whereas lowest found (38.7) N2 (40.8). regarding nitrogen readings (38.7), determined A strong positive relationship 0.01) a, b, + b/Caro an inverse a/b. results demonstrate that application, particularly higher rates, positively influences carotenoid content, as well overall plant health, which can inform agricultural practices more sustainable efficient cultivation.

Language: Английский

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