Impact of green manure and intercropping in organic greenhouse tomato

<p>Test the impact of green manure and intercropping with legumes inoculated or non-inoculated with rhizobia and endophytic bacteria on nitrogen, phosphorus and potassium nutrition in organic greenhouse tomato.<br> The first experiment (GE1E1) started on May 23rd 2017 and was terminated on January 19th 2018; the second experiment (GE1E2) started on February 8th and was terminated on June 11th 2018; the third experiment (GE1E3) started on June 12th 2018 and was terminated on January 30th 2019. In 1st experiment (GE1E1), self-rooted plants of the commercial tomato hybrid &lsquo;Elpida F1&rsquo; were cultivated, while in 2nd and 3nd &nbsp;experiment (GE1E2 and GE1E3, respectively), the commercial tomato hybrids &lsquo;Ekstasis F1&rsquo; and &lsquo;Elpida F1&rsquo;, respectively, grafted onto the commercial rootstock &lsquo;Maxifort F1&rsquo; were cultivated. The plant density was 2.13 plants/m2 in all experiments of GE1.<br> In GE1E1 and GE1E3 (tomato crops established in August and terminated in January), summer-grown cowpea was applied as green manure before establishment of the tomato crop, in order to be tested as a source of nitrogen in addition to farmyard manure (FYM). The treatments were identical in both GE1E1 and GE1E3. More specifically, in treatment 1 (CON), which was considered as control, no other source of N was applied except for FYM. In treatments 2 (GM-C), 3 (GM-C+BV) and 4 (GM-C+BV+EB), additional N was provided through green manure, by sowing cowpea (<em>Vigna unguiculata </em>(L) Walp.) and incorporating the plants at anthesis into the soil, shortly before planting the tomato crop. However, in GM-C the seeds of cowpea were not inoculated with any rhizobia, while in GM-C+BV the cowpea seeds were inoculated with<em> Bradyrhizobium sp</em>. VULI11 (BV) (Tampakaki et al. 2017), and in GM-C+BV+EB the seeds of cowpea were inoculated with a mix of BV and endophytic bacteria.</p>