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

Bakure, Shanko; Yoseph, Tarekegn; Ejigu, Demisie

doi:10.1155/2023/7434012

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…This result was consistent with the finding of Gupta and Sharma (2000) who reported that nitrogen promoted plant growth and greenness thus slowing the ripening of Onion plants. Moreover, this result is concomitant with finding of Yamasaki and Tanaka (2005) and Nebret (2012) who reported that a high nitrogen application levels are significantly delayed maturity. Early maturation at the control level may be due to insufficient nutrient intake that slows plant growth; thus it entered the fertility phase and matured earlier.…”

Section: Days To 90% Physiological Maturitysupporting

confidence: 86%

Growth and bulb yield of onion (Allium cepa L.) varieties as influenced by NPS fertilizer in Western Ethiopia

Kitila,

Abraham,

Shuma

2022

VegSci

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Onion is main crops in Ethiopian regular nutrition, cultivated year round under rain-fed and irrigated conditions. The low productivity of onion crops in Ethiopia as compared to other onion producing countries was due to disease, insect pest, lack of improved varieties, lower use of improved varieties and improper agronomic practices. A field experiment was conducted at Dambi Dollo University, Ethiopia for two consecutive years (2020 and 2021) under rain-fed to evaluate effect of NPS fertilizer rates on performance of onion varieties. The experiment was laid out using Randomized Complete Block Design with three replications in factorial mixture of four levels of NPS fertilizer (0, 50, 100, 150 kg ha-1) and three varieties (Adam Red, Monarch and Nafis). Variance Analysis indicated that NPS fertilizer and varieties were expressively affected days to 90% physiological maturity, marketable and unmarketable yield and total bulb yield of onion crop but not significantly influenced by their interaction. The number of leaves per plant and plant height were significantly influenced by main effect of varieties, NPS fertilizer rates and their interaction. The highest values for number of leaves per plant (16.08) recorded at 150 kg ha-1 for Monarch variety. Moreover, days to 90% physiological maturity (134.8 days) and total bulb yield (29.35 t ha-1) were recorded from the highest NPS application rate of 200 kg ha-1. Similarly, the maximum plant height (16.08 cm) and marketable onion bulb yield (26.41 t ha-1) were obtained from 150 kg ha-1 NPS rate. Hence, based the highest marketable onion bulb yield gained, Nafis variety of onion and 150 kg ha-1 of NPS fertilizer should be advised for production in the western part of Oromia, Ethiopia and other areas with similar agro-ecological conditions.

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Section: Days To 90% Physiological Maturitysupporting

confidence: 86%

Growth and bulb yield of onion (Allium cepa L.) varieties as influenced by NPS fertilizer in Western Ethiopia

Kitila,

Abraham,

Shuma

2022

VegSci

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Calibration and Evaluation of CERES-Maize and CROPGRO-Dry Bean Crop Simulation Models of the DSSAT in the Great Rift Valley Region of Ethiopia

Sisay,

Tesfaye,

Getnet

et al. 2024

IJAAS

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Maize (Zea mays L.) is one of the most principal cereal crops ranking first in production in Ethiopia, predominantly produced and consumed directly by the smallholder farmers in the Great Rift Valley (GRV) of Ethiopia. Common bean (Phaseolus vulgaris) is also the most important legume crops as the source of protein and export commodity in the GRV. However, the average maize and common bean yields in Ethiopia are still low due to abiotic, biotic and socioeconomic constraints. In this regard, Crop simulation models (CSMs) are used in predicting growth and yield of crops and associated yield gaps under various management options and changing climatic parameters that are profitable with minimal unwanted impacts on the environment. Before using the CSMs, it is necessary to specify model parameters and understand the uncertainties associated with simulating variables that are needed for decision-making. Therefore, the research objective of this study was to calibrate and evaluate the performance of the CERES-Maize and CROPGRO-Dry bean CSMs of the Decision Support System for Agrotechnology Transfer (DSSAT) in the GRV of Ethiopia. The generalized likelihood uncertainty estimation (GLUE) method was used to estimate the genetic parameters of the CSM-CERES-Maize and CROPGRO-Dry bean models. Root mean squared error (RMSE) and Index of agreement (I) were used to evaluate the performance of the models. The DSSAT model reasonably reproduced observations for days to anthesis, days to physiological maturity, and grain yields, with values for the index of agreement of 0.97, 0.88 and 0.61 for CERES-Maize and 0.84, 0.75 and 0.51 for CROPGRO-Dry bean. Similarly, root mean square errors were moderate for days to anthesis (1.2 and 1.2 days), maturity (4.1 and 1.6 days), and yield (0.8 and 1.1 t/ha) for CERES-Maize and CROPGRO-Dry bean, respectively. The model has been successfully calibrated and evaluated for maize and common bean crop varieties and can now it can be taken for further applications in evaluating various crop and soil management options including climate smart agriculture technologies and climate change impact studies.

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Determination of Superior Bean Genotypes in Cooking and Physical by Multi-Criteria Decision-Making Method

Karaman,

Türkay,

Odabaş

2024

Turkish Journal of Field Crops

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It is aimed to examine and predict effects of bean genotypes using cooking and physicochemical properties on seed quality index and yield in this study. The seed quality index was calculated by combining analytical hierarchical process and standard scoring functions, which is one of the multi-criteria decision-making methods, using the linear combination technique. To determine the seed quality index, a data set was created with 11 indicators. analytical hierarchical process was used to weight importance levels of examined traits depending on the genotypes. Seed quality index of registered cultivars according to investigated characteristics of cultivars and genotypes IV. Class, 6 genotype (Bombay genotype) was found to be in class V. Obtained grain quality and physical properties by determining with seed quality index obtained in this study, estimation of seed quality in beans with analytical hierarchical process was evaluated successfully. As a result, according to seed quality index of bean cultivars and genotypes, it was determined that genotype 6 had superior characteristics in terms of productivity, in addition genotypes 8 with 9 and registered cultivars could also show superior characteristics.

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

Cited by 3 publications

References 18 publications

Growth and bulb yield of onion (Allium cepa L.) varieties as influenced by NPS fertilizer in Western Ethiopia

Growth and bulb yield of onion (Allium cepa L.) varieties as influenced by NPS fertilizer in Western Ethiopia

Calibration and Evaluation of CERES-Maize and CROPGRO-Dry Bean Crop Simulation Models of the DSSAT in the Great Rift Valley Region of Ethiopia

Determination of Superior Bean Genotypes in Cooking and Physical by Multi-Criteria Decision-Making Method

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