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Fig. 3 | Environmental Evidence

Fig. 3

From: What evidence exists on the effectiveness of the techniques and management approaches used to improve the productivity of field-grown tomatoes under conditions of water-, nitrogen- and/or phosphorus-deficit? A systematic map

Fig. 3

World map indicating the geographical distribution of evidence. The relative ‘number’ of records across countries are represented using a (blue) ‘colour density’ scale (0–60). Values are identified according to country of manuscript source, as determined by the correspondence address provided for the first- or lead-author. It should be noted that the country of authorship and the country where the studies were conducted were the same in 287 out of the 291 articles included in this systematic map

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Environmental Evidence

ISSN: 2047-2382