Optical sensor-based nitrogen management: an environmentally friendly and cost-effective approach for sustainable wheat (<i>Triticum aestivum</i> L.) production on Eastern plains of India

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F23%3A95443" target="_blank" >RIV/60460709:41210/23:95443 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3389/fsufs.2023.1153575" target="_blank" >https://doi.org/10.3389/fsufs.2023.1153575</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fsufs.2023.1153575" target="_blank" >10.3389/fsufs.2023.1153575</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optical sensor-based nitrogen management: an environmentally friendly and cost-effective approach for sustainable wheat (<i>Triticum aestivum</i> L.) production on Eastern plains of India

Popis výsledku v původním jazyce

An optical sensor like Green Seeker (GS) is an emerging tool for site-specific in-season fertilizer nitrogen management strategy. The objective of this study was to establish an in-season estimate of yield (INSEY)-grain yield (GY) relation in wheat grown under Eastern plains of India using normalized difference vegetation index (NDVI) at 45 and 65 days after sowing (DAS). Data revealed lower NDVI values at 65 DAS over 45 DAS in no-nitrogen (N), phosphorus (P), and potassium (K) applied control plots as well as in N-rich plots (225 kg ha(-1) N); on the contrary, the values were higher at 65 DAS over 45 DAS in treatments where some N fertilizers were added based on NDVI readings at 45 DAS. Response index (RI) showed higher chances of response to external application of N in NDVI-based treatments. The INSEY-GY relation for wheat at 45 and 65 DAS was worked out as a power function of y = 64265x(1.171) and y = 46949x(1.036) (y is the attainable yield in kg ha(-1) and x is INSEY), respectively. The yields could fairly be predicted through this relation even at 45 DAS, though the relationship was more robust at 65 DAS (R-2 = 0.94). A prescriptive dose of 60 kg N ha(-1) as basal + 60 kg N ha(-1) at crown root initiation (CRI) stage followed by NDVI sensor-guided N application (at 45 and 65 DAS) brought about a significant improvement in yield performances, N use efficiencies with higher net returns, and benefit-to-cost ratio. The results proved the reliability of the NDVI sensor as an important tool for the optimization of fertilizer nitrogen in wheat grown under the Eastern plains of India. The new INSEY-GY relation developed through this trial could successfully be used for yield prediction in the Eastern plains of India under changing climate.

Název v anglickém jazyce

Optical sensor-based nitrogen management: an environmentally friendly and cost-effective approach for sustainable wheat (<i>Triticum aestivum</i> L.) production on Eastern plains of India

Popis výsledku anglicky

An optical sensor like Green Seeker (GS) is an emerging tool for site-specific in-season fertilizer nitrogen management strategy. The objective of this study was to establish an in-season estimate of yield (INSEY)-grain yield (GY) relation in wheat grown under Eastern plains of India using normalized difference vegetation index (NDVI) at 45 and 65 days after sowing (DAS). Data revealed lower NDVI values at 65 DAS over 45 DAS in no-nitrogen (N), phosphorus (P), and potassium (K) applied control plots as well as in N-rich plots (225 kg ha(-1) N); on the contrary, the values were higher at 65 DAS over 45 DAS in treatments where some N fertilizers were added based on NDVI readings at 45 DAS. Response index (RI) showed higher chances of response to external application of N in NDVI-based treatments. The INSEY-GY relation for wheat at 45 and 65 DAS was worked out as a power function of y = 64265x(1.171) and y = 46949x(1.036) (y is the attainable yield in kg ha(-1) and x is INSEY), respectively. The yields could fairly be predicted through this relation even at 45 DAS, though the relationship was more robust at 65 DAS (R-2 = 0.94). A prescriptive dose of 60 kg N ha(-1) as basal + 60 kg N ha(-1) at crown root initiation (CRI) stage followed by NDVI sensor-guided N application (at 45 and 65 DAS) brought about a significant improvement in yield performances, N use efficiencies with higher net returns, and benefit-to-cost ratio. The results proved the reliability of the NDVI sensor as an important tool for the optimization of fertilizer nitrogen in wheat grown under the Eastern plains of India. The new INSEY-GY relation developed through this trial could successfully be used for yield prediction in the Eastern plains of India under changing climate.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40101 - Agriculture

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Frontiers in Sustainable Food Systems

ISSN

2571-581X

e-ISSN

2571-581X

Svazek periodika

7

Číslo periodika v rámci svazku

APR 28 2023

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000985090000001

EID výsledku v databázi Scopus

2-s2.0-85159870696