Determination of canopy properties of winter oilseed rape using remote sensing techniques in field experiments

L. Engström; B. Lindén; M. Söderström; T. Börjesson; K. Nissen; N. Lorén; I. Gruvaeus; O. Hagner

Jump to Content

Determination of canopy properties of winter oilseed rape using remote sensing techniques in field experiments

in Precision agriculture '09

Autor:innen:

L. Engström

L. Engström
Search for other papers by L. Engström in
Current site
Google Scholar
PubMed

B. Lindén

B. Lindén
Search for other papers by B. Lindén in
Current site
Google Scholar
PubMed

M. Söderström

M. Söderström
Search for other papers by M. Söderström in
Current site
Google Scholar
PubMed

T. Börjesson

T. Börjesson
Search for other papers by T. Börjesson in
Current site
Google Scholar
PubMed

K. Nissen

K. Nissen
Search for other papers by K. Nissen in
Current site
Google Scholar
PubMed

N. Lorén

N. Lorén
Search for other papers by N. Lorén in
Current site
Google Scholar
PubMed

I. Gruvaeus

I. Gruvaeus
Search for other papers by I. Gruvaeus in
Current site
Google Scholar
PubMed

, und

O. Hagner

O. Hagner
Search for other papers by O. Hagner in
Current site
Google Scholar
PubMed

Art:: Kapitel

Seiten:: 113–118

DOI:: https://doi.org/10.1163/9789086866649_014

Über Institut einloggen

Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):

42,00 €35,00 € excl. VAT

Add to Cart

Token einlösen

Abstract

Measuring canopy reflectance in winter oilseed rape has proved to be a fast and non-destructive tool for monitoring canopy properties in precision agriculture. In two-year field experiments of oilseed rape from 2007 to 2009, in south-western Sweden, investigations were carried out in order to evaluate the use of the handheld Yara N-Sensor for determination of biomass and N-content instead of N-analysis of crop samples in the laboratory. The use of digital photography to determine plant density was also investigated with the purpose to replace time consuming counts of plants by hand in these field experiments. The experiment was performed in 40 sampling areas of 12 × 15 m distributed on four different fields with varying plant density. N-sensor measurements and digital photos were obtained in late autumn, early spring simultaneously with counts of plants and measurements of DM and N-content in crop samples from 2 m² within each sampling area. The N-content of the crop in late autumn in 2007 (17 October) was 18 kg N/ha, on average, and ranged from 3 to 81 kg N/ha (sd.= l 5). The r² values for the relationship (fitted power function) between sensor values and biomass in kg DM/ha and N-content (kg N/ha) were 0.93 and 0.92, respectively. Using image analysis, fewer plants were detected than with manual counting. This was accentuated when the plant density increased. The area fraction covered by crop estimated using image analysis of the ground photographs correlated well (r²=0.94) with the dry matter of the manually cut crop samples. Since biomass and N-content also had a good correlation image analysing may be a method to determine the N-content. The results indicated that the handheld N-sensor could be a fast and less costly method to determine the DM- and N-content of winter oilseed rape.

Zitierungsangaben

Save
Cite
Inhalt per Mail versenden

Link teilen

Sie können einen Link zu dieser Seite per E-Mail senden:
Inhalt per Mail versenden
oder den Link direkt kopieren:

https://brill.edhh.ma/abstract/book/9789086866649/B9789086866649_s014.xml
Der Link wurde nicht kopiert. Ihr aktueller Browser unterstützt das Kopieren über diese Schaltfläche möglicherweise nicht.

Link wurde kopiert

Reduzieren
Erweitern
Nach oben

Precision agriculture '09

ISBN:: 9789086866649

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 01 Jan 2009

Fachgebiete
- Biowissenschaften
  - Allgemein
  - Landwirtschaft und Umwelt

Front Matter

Show Items

Back Matter

Show Items

Kennzahlen

	Insgesamt	Letzte 365 Tage	In den letzten 30 Tagen
Aufrufe von Kurzbeschreibungen	42	27	10
Gesamttextansichten	0	0	0
PDF-Downloads	0	0	0

Afrikanistik	Internationale Beziehungen	Nahost- und Islamwissenschaften
Altorientalistik und Ägyptologie	Internationales Recht	Pädagogik
Amerikanistik	Judaistik	Philosophie
Asienwissenschaften	Klassische Altertumswissenschaft	Religionswissenschaft
Bibelauslegung	Kunstgeschichte	Slawistik und Eurasienkunde
Biologie	Literatur- und Kulturwissenschaften	Sozialwissenschaften
Biowissenschaften	Medienwissenschaft	Sprachen und Linguistik
Buchgeschichte und Kartographie	Menschenrechte und humanitäres Völkerrecht	Theologie und Christentum
Geschichte	Musikwissenschaft

Fachgebiete

Autor:innen

Open Access

Produkt-Informationen

Über uns

Kontakt

Determination of canopy properties of winter oilseed rape using remote sensing techniques in field experiments

Abstract

Zitierungsangaben

Link teilen

Precision agriculture '09

Inhaltsverzeichnis

Kennzahlen

Kennzahlen