Influence of the environment on the performance of some onion cultivars in Kenya

Kimani, P. M.; Kariuki, JW; Peters, Paul J.; Rabinowitch, H.D.

doi:10.4314/acsj.v1i1.54735

Cited by 9 publications

(9 citation statements)

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“…This finding is in concurrence with the findings of Jilani and Ghaffoor (2003) and Jilani et al (2009) who reported the variation among onion cultivars in average bulb weight. Kimani et al (1993) also reported significant bulb weight variation among eight onion cultivars. According the EARO (2004), 'Melkam' variety is characterized by large bulb weight.…”

Section: Average Bulb Weight (G)mentioning

confidence: 88%

“…Varieties known as 'storage onions' have high dry matter content (15 to 20%) and relatively high amounts of fructans, but have lower levels of reducing sugars, besides relatively high rates of organosulfur compounds (Mallor et al, 2011). Kimani et al (1993) additionally reported a dry matter content variation from low levels of 7 to 10% to high levels of 15 to 20% in onion varieties. The authors suggested that onions with high dry matter are preferred for processing.…”

Section: Bulb Dry Matter Content (%)mentioning

confidence: 99%

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Effect of intra-row spacing on yield and quality of some onion varieties (Allium cepa L.) at Aksum, Northern Ethiopia

Kahsay¹

2013

Afr. J. Plant Sci.

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Lack of improved varieties and production practices have been the major bottlenecks of onion production and productivity in Tigray, particularly at Aksum area. There have been no recommended intra-row spacing and variety for that area specifically; rather farmers used to practice non-uniform plant spacing. Thus, a field experiment was conducted to investigate the influence of intra-row spacing, variety and their interactions on yield, shelf life and bulb quality of onion, thereby recommend the optimum practices to farmers in the study area. The study was conducted between August 2010 and April 2011 at Aksum area (L/maichew district). Three different intra-row spacings (5, 7.5 and 10 cm) were evaluated using four varieties of onion ('Adama' Red, 'Bombay' Red, 'Melkam' and 'Nasik' Red) using RCBD replicated four times. Data on yield and quality parameters were recorded and subjected to ANOVA. Results indicate that intra-row spacing of 10 cm was superior in plant height, leaf number per plant, leaf biomass yield, leaf dry matter content and percentage of bolters. Highest total bulb yield was recorded at the closest intra-row spacing (5 cm) followed by 7.5 cm. 'Melkam' variety was the highest yielder, while 'Adama' Red was the lowest yielder. Average bulb weight increased with increasing intra row spacing. 'Melkam' variety followed by 'Bombay' Red variety was superior in average bulb weight. 'Adama' Red recorded the highest unmarketable yield.

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Section: Average Bulb Weight (G)mentioning

confidence: 88%

Section: Bulb Dry Matter Content (%)mentioning

confidence: 99%

Effect of intra-row spacing on yield and quality of some onion varieties (Allium cepa L.) at Aksum, Northern Ethiopia

Kahsay¹

2013

Afr. J. Plant Sci.

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“…This is an important finding since different markets have different requirements regarding onion shape and there is an interest to preserve it in both conventional and organic production systems. On the contrary, Kimani et al (1993) reported significant variation in onion bulb shape due to seasonal variations.…”

Section: Resultsmentioning

confidence: 80%

Assessing Selection Parameters for Improving Yield in Organically Grown Onion

Brdar-Jokanović

Ugrinović

Ljevnaić‐Mašić

et al. 2017

Contemporary Agriculture

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“…A cultivar crop performs differently under different agro-climatic conditions and various cultivars of the same species grown even in the same environment give different yields as the performance of a cultivar mainly depends on the interaction of genetic makeup and environment (Jilani & Ghafoor, 2003;Kimani et al 1993). Ijoyah et al (2008) conducted a field experiment to evaluate the yield performance of four onion varieties and found that some other varieties performed better than the commonly grown onion varieties by the farmers.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Onion Varieties for Productivity Performance in Botswana

Baliyan¹

2014

WJAR

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Onion varieties were evaluated for adaptability to the climatic conditions in Botswana. Six varieties of onion were planted under a complete randomized block design experiment with four replications at farmers' field in Botswana (Southern Africa). The quantitative data on yield of onion varieties and, farmers perception on the varieties were collected. All the varieties were harvested at their maturity (80% tops down) and then graded and weighed into six categories of bulbs: small weight, double weight, thin weight, bolters weight, marketable weight and total weight. Inferential and descriptive statistical methods were used for data analysis where by two ways analysis of variance and ranking scales were applied. It was concluded that all the six varieties namely; Arad, Galil, Hanna, Shahar, Texas Grano 502 P.R.R. and Red Creole contributed differently to the total yield, marketable yield and percentage marketable yield. Onion variety Hanna followed by Shahar produced the highest marketable yield whereas Galil variety gave the lowest marketable yield. Despite the fact that Texas Grano variety produced the highest total yield and has been a common and popular onion variety in Botswana, it was recommended that farmers should not grown Texas Grano variety as it produced the lowest percentage (60%) of marketable yield. Based on the yield performance and the farmer's perception, Hanna followed by Shahar varieties were found to be the best performing onion variety and therefore, government should promote these onion varieties for cultivation in Botswana. Government can import to ensure the availability of Hanna and Shahar varieties so that farmers can be motivated for adoption of these varieties for commercial production. The effects of different planting dates on the yield of onion varieties can be considered for future research.

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Influence of the environment on the performance of some onion cultivars in Kenya

Cited by 9 publications

References 0 publications

Effect of intra-row spacing on yield and quality of some onion varieties (Allium cepa L.) at Aksum, Northern Ethiopia

Effect of intra-row spacing on yield and quality of some onion varieties (Allium cepa L.) at Aksum, Northern Ethiopia

Assessing Selection Parameters for Improving Yield in Organically Grown Onion

Evaluation of Onion Varieties for Productivity Performance in Botswana

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