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Table 1 Main soil physical and chemical properties of the experimental fields in 2018 and 2019

From: Individuation of the best agronomic practices for organic durum wheat cultivation in the Mediterranean environment: a multivariate approach

Soil properties

Unit

2018

2019

Sand

%

11.4

15.4

Silt

%

39.6

34.9

Clay

%

49

49.7

Total N (Kjeldhal method)

‰

1.3

1.1

Mineral Na

mg kg–1

15.9

19.2

Available P (Olsen method)

mg kg–1

62

68

Exchangeable K (Ammonium acetate method)

mg kg–1

422

450

Organic matter (Walkley–Black method)

%

2.5

2.6

  1. aMineral N was determined at 0.3 m soil depth in pre-sowing as the sum of nitrate and ammonium content [56]
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Agriculture & Food Security

ISSN: 2048-7010