Table 1 Eligibility criteria for each PICO elements applied at the title/abstract and/or full-text
PICO element | Eligible criteria | Exclusion criteria |
|---|---|---|
Title/abstract stage | ||
 Population | Presence of the crop name tomato | Non-commercial crop OR Other vegetables or crops |
 Intervention | Reference to a technique, treatment, or management strategy on use-efficiency of either water, N, P, or combinations of these | Stress/tolerance other than or in addition to water, N and/or P (i.e., biotic, salinity, temperature, minerals, pesticides) OR Controlled or protected conditions, such as in greenhouses or polytunnels, hydroponics |
 Outcome | Presence of the word productivity or yield | Other outcomes, such as quality or nutritional properties |
Full-text stage | ||
 Population | Presence of the crop name tomato | Similar to criteria for the title screening |
 Intervention | Outcome obtained from field data | Similar to criteria for the title screening OR No impact reported on water, N and/or P use OR No intervention aiming for water, N and/or P use-efficiency and for tomato productivity OR Water, N and/or P reduced use only by direct effect of reuse/recycle sources OR Laboratory experiment only, Soilless or pot experiment OR Cell signalling study OR Tomato breeding study not applied to the field |
 Comparator | Usual or current practices before the introduction of the intervention | No comparator |
 Outcome | Productivity i.e., yield expressed either by fruit number or weight | Similar to criteria for the title screening OR No yield measurements OR Economic measurements only OR |