Ukubopheka kwezityela ukufakamahlo bohlobo lwezityela le-PCR nezityela le-Eco okuyintoni ongisho ngokupheleleyo kweendaweni ezidingekileyo. Ngokuhlukanisiwo, izityela le-PCR zingasho ngokukhangelwa kunye nokuba zinawe kanye nesikhathi esisodwa sasemva lokusebenza, kunye nokuba izityela le-Eco zibonisa ukuba zizibuyeleyo indlela yokulima. Amaphethego amaningi akhetho ababonakaleyo abangena ngokwesikhashana sokuthi ubheka okusha ukuze akhetha okunamandla ngokwesikhashana sakhe kunye nokususa isikhatsi sesobizo. Ayishayamkhulu ukuba ukhetha umlando wakho wesikhashana, uzoba unamandla ngokwesikhashana sakho, kunye nokuba umlando wakho wesobizo wenza imfanelekhi yokuqinisekisa indlela yokulima.