Growth and Yield Response of Cowpea (Vigna unguiculata L. Walp.) to Integrated Use of Planting Pattern and Herbicide Mixtures in Wollo, Northern Ethiopia

A field experiment was conducted for 2 yr near Scottsbluff, NE, to evaluate the growth and yield response of nine commercial sugarbeet cultivars to five postemergence herbicide mixtures applied two times. Sugarbeet cultivars varied in their response to herbicides. Three of the five postemergence herbicide mixtures reduced sugarbeet leaf area at 9 wk after planting (WAP), while two treatments had no significant effect. Root yield reductions from herbicide treatments ranged from 3 to 11% averaged over the nine cultivars. Two applications of desmedipham plus phenmedipham at 180 plus 180 g/ha reduced root yield 3% compared to untreated plots. Two applications of clopyralid at 100 g/ha, triflusulfuron at 18 g/ha, or ethofumesate at 160 g/ha plus desmedipham plus phenmedipham resulted in a 17, 29, and 22% reduction in leaf area at 9 WAR respectively, and a 6, 8, and 6% reduction in root yield, respectively, compared to untreated plots. Sethoxydim at 280 g/ha plus desmedipham plus phenmedipham did not cause additional sugarbeet injury.

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Growth and Yield Response of Garlic (Allium Sativum L.) to Intra-row Spacing and Variety at Selekeleka, Northern Ethiopia

The Open Biotechnology Journal ◽

10.2174/1874070702115010001 ◽

2020 ◽

Vol 15 (1) ◽

pp. 1-11

Author(s):

Mulu Teshale ◽

Negasi Tekeste

Keyword(s):

Biomass Yield ◽

Block Design ◽

Leaf Length ◽

Growth And Yield ◽

Yield Response ◽

Row Spacing ◽

Northern Ethiopia ◽

Local Variety ◽

Four Levels ◽

Bulb Yield

Background: Garlic is an important condiment and cash crop in Ethiopia. Low yield and productivity of the crop are the major characteristics of the crop in the country. Many factors affect the productivity of the crop in the country, however poor agronomic practices, especially the use of low-yielding varieties and inappropriate spacing, are the major ones. Objective: The aim of this study is to evaluate the growth and yield response of garlic to intra-row spacing and variety, and to identify the optimum intra-row spacing and high-yielding variety. Methods: The field experiment was composed of three garlic varieties vis-a-vis Tsedey 92, Bishoftu Netch and Local and four levels of intra-row spacing with 5cm, 7.5cm, 10cm and 12.5 cm laid out in a Randomized Complete Block Design replicated three times. Data pertaining growth, yield and yield-related parameters were collected and analyzed using Genstat software. Results: Main effects of variety and intra-row spacing significantly(p≤0.05) affected days to maturity, plant height, leaf number, leaf length, leaf width, bulb length, bulb diameter, clove number per bulb, mean bulb weight, and clove diameter. Interaction effects of variety and intra-row spacing significantly (p≤0.05) influenced clove length, fresh biomass yield, dry biomass yield, marketable cloves per bulb, marketable, unmarketable and total bulb yield. The highest total bulb yield of 8.98 tha-1 was obtained from treatment combination of variety Tsedey 92 and 5cm intra-row spacing although at par with treatment combinations of Bishoftu Netch variety and 5cm intra-row spacing which gave 8.70 tha-1 while the lowest (5.37 tha-1) was obtained at treatment combinations of local variety and intra-spacing of 12.5cm. The highest (8.05 tha-1) and lowest (4.94 tha-1) marketable bulb yield of garlic were obtained at treatment combinations of variety Tsedey 92 planted with 5cm intra-row spacing and local variety planted with 12.5cm, respectively. Conclusion: Tsedey 92 variety together with an intra-row spacing of 5cm could be suggested for high total and marketable bulb yield in the study area.

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