Pre-crop Values From Satellite Images for Various Previous and Subsequent Crop Combinations

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Pirjo Peltonen-Sainio
  • Lauri Jauhiainen
  • Eija Honkavaara
  • Samantha Wittke

  • Mika Karjalainen
  • Eetu Puttonen

Organisaatiot

  • Luke Natural Resources Institute Finland
  • National Land Survey of Finland

Kuvaus

Monocultural land use challenges sustainability of agriculture. Pre-crop value indicates the benefits of a previous crop for a subsequent crop in crop sequencing and facilitates diversification of agricultural systems. Traditional field experiments are resource intensive and evaluate pre-crop values only for a limited number of previous and subsequent crops. We developed a dynamic method based on Sentinel-2 derived Normalized Difference Vegetation Index (NDVI) values to estimate pre-crop values on a field parcel scale. The NDVI-values were compared to the region specific 90th percentile of each crop and year and thereby, an NDVI-gap was determined. The NDVI-gaps for each subsequent crop in the case of monocultural crop sequencing were compared to that for other previous crops in rotation and thereby, pre-crop values for a high number of previous and subsequent crop combinations were estimated. The pre-crop values ranged from +16% to -16%. Especially grain legumes and rapeseed were valuable as pre-crops, which is well in line with results from field experiments. Such data on pre-crop values can be updated and expanded every year. For the first time, a high number of previous and following crop combinations, originating from farmer's fields, is available to support diversification of currently monocultural crop sequencing patterns in agriculture.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli462
Sivut1-13
Sivumäärä13
JulkaisuFRONTIERS IN PLANT SCIENCE
Vuosikerta10
TilaJulkaistu - 9 huhtikuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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ID: 33204846