Evaluation of common bean varieties (Phaseolus vulgaris L.) to different row-spacing in Jimma, South Western Ethiopia

Abstract

This study evaluated the effect of row spacing on growth, yield and yield components of common bean varieties at Jimma. The objectives of the study were (i) to evaluate the best performed common bean variety (ii) to determine the optimum row spacing for different common bean varieties under the test environment. The experiment was laid out in randomized complete block design (RCBD) in factorial arrangement with three replications. A combination of three common bean Varieties (Nasir, Goberesha and Local Asendabo) and row spacing at four levels (30, 40, 50, 60cm) were used as experimental treatments. Leaf number was significantly varied between the varieties; whereas row spacing significantly influence leaf area index. The main effect of row spacing and the interaction effect did not show significant influence on both. Hundred seed weight and number of seed per pod were varied between the varieties and row spacing. Hundred seed weight was increased with row spacing. Pod number per plant, nodule number per plant, grain yield and harvest index was significantly affected row spacing, variety and their interactions. Grain yields increased with plant population assuming a parabolic curve to the plant density of both determinate varieties at 40cm row spacing. The highest yield for variety-Nasir and variety-Goberesha were observed at40 cm row spacing; whereas the highest yield for the local variety was recorded at 50 cm row spacing.

Effects of plant densities on the performance of common bean varieties in multiple environments of northwestern Tanzania

“…It is possible that the variation in the number of pods per plant is due to the genetic factor and not the plant density. This result is contrary to Merga (2020) who reported a significant difference in the interaction between bean varieties and row spacing. Present findings also agree with the results of Kiriba et al (2020) who reported no significant effect of plant density on number of seeds per pod and 100 seed weight of bush bean varieties.…”

“…Present findings also agree with the results of Kiriba et al (2020) who reported no significant effect of plant density on number of seeds per pod and 100 seed weight of bush bean varieties. Moreover, other studies that evaluated the bean varieties for different row spacings also reported non-significant effects of the interaction between bean varieties and row spacing (Asemanrafat and Honar, 2017;Merga, 2020) which are in agreement with this study. Conversely, these results are contrary with the results of Musana et al…”

Optimization of plant density and fertilizer application to improve biofortified common bean (Phaseolus vulgaris L.) yield on Nitisols of South-Kivu, Eastern D.R. Congo

“…[ 11 ], by Refs. [ 5 , 34 ] on common bean. Several studies on the common bean yield due to varietal performance reported that the difference of grain yield is attributes to many factors including the genetic performance, environmental adaptation, and the resistance to biotic and abiotic stresses [ 34 , 35 ].…”

“…Congo) is the ninth African country in terms of tonnage of common bean produced (172 833.03 tons) after Tanzania (844 024.59 tons), Uganda (651 385.08 tons) and Kenya (499 624.56 tons) who are the first three bean producers in Africa [ 3 ]. Common bean is widely cultivated across all cropping systems (monoculture and/or intercropping), commonly associated with cereals and/or perennial crops and contributes to significantly improve soil fertility [ 4 , 5 ].…”

Effect of Interrow Spacings on Growth, Yield, and Yield Components of Common Bean (Phaseolus vulgaris L.) Varieties in the Central Rift Valley of Ethiopia

“…Because of the high competition for growth factors, crops planted at narrower interrow spacing had high growth and vegetative mass due to the production of auxin hormones and higher light interception at the upper layer of the canopy that enabled the higher total biomass and grain yields. As the authors of reference [39] found, the grain yield increased as interrow spacings became narrower and narrower due to increased vegetative growth of crop which resulted in a high assimilation rate of crops for further conversion of biological yield into economic yield. In agreement with these ideas, the authors of reference [40] stated that, as interrow spacings increased the grain yield plant −1 increased and grain yield ha −1 decreased due to low plant populations per a given area and higher nutrient availability to the crops to enhance excessive vegetative growth.…”