Performance of climber common bean (Phaseolus vulgaris L.) lines under Researcher Designed Farmer Managed (RDFM) system in three bean agro-ecological zones of Malawi

An on-farm study was carried out in 2003-2004 and 2004-2005 growing seasons under rain-fed condition in five sites namely Thondwe and Matapwata in Zomba and Thyolo districts respectively, Chipuka inNtchisi district, Ntchenachena and Ngong’a in Rumphi district representing three bean agro-ecological zones of Malawi. Seven climber common bean entries; CAB 19, RWV 1046, BCMV B4, AND 659, RWV1042-2-3, 5P/5 and DC 86-244 were evaluated for their performance and stability across sites and two seasons under Researcher Designed Farmer Managed (RDFM) system. Entries DC 86-244, AND 659 andBCMV B4 were early maturing in most sites of the trial. DC 86 244 and AND 659 were also high yielding and had larger seed sizes compared to other entries. RWV 1046 and RVW 1042-2-3 were also highyielding though had smaller seed sizes. Stability analysis identified entries CAB 19 and DC 86 244 as stable entries across sites and seasons. Among environments, Ng’onga, Chipuka and Thondwe werehigh yielding. Ntchenachena was more stable but lower yielding compared to other sites. Matapwata was highly unreliable as heavy rains followed by dry spells characterised the site which resulted in lossof all bean entries in 2004-2005 growing season

Yield performance of dwarf bean (Phaseolus vulgaris L.) lines under Researcher Designed Farmer Managed (RDFM) system in three bean agro-ecological zones of Malawi

An on-farm study was carried out under rain-fed condition in 2003 - 2004 and 2004 - 2005 growing seasons in five sites namely Ntchenachena and Ngong’a in Rumphi district, Chipuka in Ntchisi district, Thondwe and Matapwata in Zomba and Thyolo districts respectively representing three bean agroecological zones of Malawi. Seven dwarf bean entries; DC 96-95, PC 490-D8, BCMV-B2, SDDT-54-C5, APN 130, F6BC (19) and DOR 715 were evaluated for their yield stability across sites and two seasons under Researcher Designed Farmer Managed (RDFM) system. Yield stability of the entries across years varied significantly. Entries SDDT-54-C5, PC490-D8 and DOR 715 were stable across all sites and between the two seasons. DOR 715 was also high yielding entry in Thondwe and Ntchenachena sites followed by BCMV B2 though the latter was unstable. Among sites, Thondwe was the best because yields of most of the bean entries were stable at this site