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 |