Effect of Spacing in Incidence and Severity of Garlic Rust (Puccinia Allii (Rudolphi.) and Bulb Yield and Related Traits of Garlic at Eastern Ethiopia

Abstract

Garlic rust is caused by Puccinia allii (Rudolphi) extremely hinder the productivity of Alliaceae species, especially garlic (Allium sativum). The disease has been found wherever garlics are cultivated and at present no system of control has been found that fully prevents the occurrence of the disease. A field experiment was conducted to determine the optimum planting density for abating garlic rust in order to maximize yield of garlic. The experiment was laid out in RCBD with three replications, garlic local cultivar (Chiro) and three levels of intra-row spacing (10 cm, 15 cm and 20 cm) were included in the study. Disease incidence and severity, plant height, Bulb yield, bulb diameter, Days to maturity, Plant height, Total yield (t/ha), Bulb weight (gm), Bulb diameter, Number of cloves per bulb and Clove weight were analyzed using SAS software. The result of the study revealed that the spacing was varied significantly in disease incidence and severity and in aforementioned agronomic data. The maximum yield was observed from plot planted with 10 cm intra row spacing where was the minimum value of yield was recorded at plot planted with 20 intra row spacing. The results explained that increasing intra-row spacings from 10 to 20 cm decreased significantly (P ≤ 0.05) in disease incidence and severity simultaneously increased yield of garlic. Based on the results obtained, it could be concluded that spacing 10cmx30cm is optimal for better production of garlic under disease conditions.

Effect of Some Agronomic Practices on Ascochyta Blight Severity and Yield of Faba Bean (Vicia faba L.) in Tunisia

“…Reduced plant population density could be one tool in a program to manage Ascochyta blight of faba bean. Decreasing disease severity level of faba bean observed with 100 kg ha -1 seed rate could be due to proper aeration resulting in decreased humidity level suitable for fungus growth and decreasing plant population also limits the transmission of rust pathogen to the next plant as confirmed by Mengesha and Tesfaye, (2015). Disease incidence and severity tended to increase with increased plant spacing in susceptible cultivars as confirmed by Maasa et al (2006).…”

Clove-Seed Size and Health and Plant Spacing on the Viability of Garlic Crops

“…However, despite the lowest spacings between plants used (7.5 and 10 cm) for large clove-seeds resulted in a higher competition between the plants, lowering the total bulb weight, the high MBW in the spacing of 12.5 cm compensated the low plant population, resulting in a higher TBY and CBY. Moreover, no significantly higher MBW was found for the spacing of 15 cm; thus, the use of low plant densities results in low TBY and CBY (MENGESHA;TESFAYE, 2015;VIDYA, 2015).…”

“…Olfati, Najafabadi and Rabiee (2016) evaluated three spacings between rows (15, 25, and 35 cm) and found that the lowest spacing resulted in 78% higher TBY when compared to the highest. Mengesha and Tesfaye (2015) evaluated three spacings between plants (10, 15, and 20 cm) with 30 cm between rows and found 38% higher yield for the spacing of 20 cm (7.87 Mg ha -1 ), when compared to the spacing of 10 cm (4.85 Mg ha -1 ).…”

Effect of Row Spacing and Seed Rate on Ascochyta Blight Severity and Yield of Chickpea (Cicer arietinum L.) in Tunisia

“…Reduced plant population density could be one tool in a program to manage Ascochyta blight of chickpea. Decreasing disease severity level of chickpea observed with 80 kg ha -1 seed rate could be due to proper aeration resulting in decreased humidity level suitable for fungus growth and decreasing plant population also limits the transmission of rust pathogen to the next plant as confirmed by Mengesha and Tesfaye, (2015). Higher plant density may lead to severe competition between plants and increase risk of disease and lodging of the crop, resulting in reduced grain yield as confirmed by Liaqat et al (2019).…”