"Start signalling and monitoring thrips on time"
During and after the clearing of the erstwhile crop , every effort is made not to allow an plague immediately at the start of the new harvest . Once the young plants have been planted , some spraying with chemical agents with a short residual impression on good insects is often still done . Most raiser then feel that they are starting their fresh crop unclouded and that there are no or barely any pest present in the greenhouse ....