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Forskningsartikel2022Vetenskapligt granskadÖppen tillgång

A comparison of field assessment methods for lucerne inoculation experiments

Tang, Lin; Morel, Julien; Halling, Magnus; Ohlund, Linda; Parsons, David

Sammanfattning

Effective and practical measurement methods for assessing field inoculation experiments are needed to identify inoculants that could improve lucerne establishment. In this study, assessment potential of different existing measurement methods (plant height, Dualex 4 Scientific leaf-clip meter, GreenSeeker handheld crop sensor, drone-acquired orthomosaic calculation, yield, nutrient analysis and nodule assessment) were compared across 12 inoculation treatments applied to lucerne (Medicago sativa L.) at 3 sites. F-values were used to compare the potential of different methods to separate inoculation treatments. The handheld GreenSeeker measuring normalised difference vegetation index (NDVI) showed the greatest potential for separating inoculation treatments in fields where lucerne had not previously been cultivated, followed by visible atmospherically resistant index (VARI) and green-red vegetation index (GRVI) from drone-acquired orthomosaics. These methods are non-destructive, low cost, require low labour input, fast, and do not require sample preparation, and thus are efficient measurement methods for disaggregating treatments in field inoculation experiments.

Nyckelord

Forage; lucerne; nodulation; nutrient content; spectral reflectance; yield

Publicerad i

Acta Agriculturae Scandinavica, Section B - Soil and Plant Science
2022, Volym: 72, nummer: 1, sidor: 860-872
Utgivare: TAYLOR & FRANCIS AS

      SLU författare

    • Tang, Lin

      • Institutionen för norrländsk jordbruksvetenskap, Sveriges lantbruksuniversitet

      • Morel, Julien

        • Institutionen för norrländsk jordbruksvetenskap, Sveriges lantbruksuniversitet

          • Parsons, David

            • Institutionen för norrländsk jordbruksvetenskap, Sveriges lantbruksuniversitet

          UKÄ forskningsämne

          Jordbruksvetenskap

          Publikationens identifierare

          DOI: https://doi.org/10.1080/09064710.2022.2111340

          Permanent länk till denna sida (URI)

          https://res.slu.se/id/publ/118780