Teff Grain Physical and Chemical Quality Responses to Soil Physicochemical Properties and the Environment

Abewa, Anteneh; Adgo, Enyew; Yitaferu, Birru; Alemayehu, Getachew; Assefa, Kebebew; Solomon, Juan K. Q.; Payne, William A.

doi:10.3390/agronomy9060283

Cited by 26 publications

(26 citation statements)

References 41 publications

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“…The historical average minimum and maximum temperatures are 11.0 and 26.8 °C, respectively. Mean annual precipitation is 1,372 mm (Abewa et al., 2019), and the rainy season starts in June and ends in October. Monthly rainfall and temperatures during teff growing season at the experimental site are presented in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Teff [Eragrostis tef (Zucc.)] rainfed yield response to planting method, seeding density, and row spacing

et al. 2020

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Teff [Eragrostis tef (Zucc.)] grain yield is low due to lack of improved management practices. We evaluated grain yield and cost of planting methods (broadcast, row, and transplanting), row spacing (10, 15, 20, 25, and 30 cm), and seeding densities (2.5, 5.0, 7.5, 10, 15, 20, and 25 kg ha−1) for teff in the 2012 and 2013 cropping seasons at the Adet Agricultural Research Center farm in northwest Ethiopia. Transplanting (1,675 kg ha−1) resulted in 34 and 75% greater grain yield (P < .05) than row (1,247 kg ha−1) and broadcast planting (958 kg ha−1), respectively. Row planting gave greater (30%) grain yield than broadcasting. Seeding density did not significantly influence grain yield in broadcast or row planting. Row spacing significantly influenced grain yield under row planting but did not significantly influence grain yield under transplanting. Regression analysis indicated grain yield increased as seeding density increased from 2.5 to 10 kg ha−1, then declined at greater seeding densities for both broadcast and row planting. Grain yield declined sharply as row spacing increased from 15 to 30 cm for both transplanting and row planting. Partial‐budget analysis showed that although teff transplanting gave the greatest grain yield, it was not economical due to low straw (biomass) yield and high cost of labor. Row planting at a spacing from 10 to 15 cm at 15 kg seed ha−1 was the most economically effective teff production method, with a net benefit of $1,640 ha−1.

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Section: Methodsmentioning

confidence: 99%

Teff [Eragrostis tef (Zucc.)] rainfed yield response to planting method, seeding density, and row spacing

et al. 2020

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“…Tef is becoming popular in the Western world due to its nutritional quality and health benefits. The levels of protein, fiber, fat, starch, and vitamin C in tef grains are either superior or similar to other major cereal crops, such as wheat, barley, rice, maize, oat, sorghum (Gebremariam et al, 2014;Daba, 2017;Abewa et al, 2019). Tef grains have low glycemic index which makes them suitable for people with Type 2 diabetes.…”

Section: Introductionmentioning

confidence: 99%

Silicon Enhances Biomass and Grain Yield in an Ancient Crop Tef [Eragrostis tef (Zucc.) Trotter]

et al. 2020

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Silicon (Si) is one of the beneficial plant mineral nutrients which is known to improve biotic and abiotic stress resilience and productivity in several crops. However, its beneficial role in underutilized or “orphan” crop such as tef [Eragrostis tef (Zucc.) Trotter] has never been studied before. In this study, we investigated the effect of Si application on tef plant performance. Plants were grown in soil with or without exogenous application of Na2SiO3 (0, 1.0, 2.0, 3.0, 4.0, and 5.0 mM), and biomass and grain yield, mineral content, chlorophyll content, plant height, and expression patterns of putative Si transporter genes were studied. Silicon application significantly increased grain yield (100%) at 3.0 mM Si, and aboveground biomass yield by 45% at 5.0 mM Si, while it had no effect on plant height. The observed increase in grain yield appears to be due to enhanced stress resilience and increased total chlorophyll content. Increasing the level of Si increased shoot Si and Na content while it significantly decreased the content of other minerals including K, Ca, Mg, P, S, Fe, and Mn in the shoot, which is likely due to the use of Na containing Si amendment. A slight decrease in grain Ca, P, S, and Mn was also observed with increasing Si treatment. The increase in Si content with increasing Si levels prompted us to analyze the expression of Si transporter genes. The tef genome contains seven putative Si transporters which showed high homology with influx and efflux Lsi transporters reported in various plant species including rice. The tef Lsi homologs were deferentially expressed between tissues (roots, leaves, nodes, and inflorescences) and in response to Si, suggesting that they may play a role in Si uptake and/or translocation. Taken together, these results show that Si application improves stress resilience and yield and regulates the expression of putative Si transporter genes. However, further study is needed to determine the physiological function of the putative Si transporters, and to study the effect of field application of Si on tef productivity.

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“…Teff grains are subsequently converted to human foods with the hay parts being used for forage. Grain quality is often evaluated based on its nutrient composition and physical attributes of colour (Morris, 2016;Abewa et al, 2019). The Ethiopian Standard Agency (ESA, 2012) classifies teff grains based on their colour as: very white (magna), white (nech), mixed (sergegna) and brown (key).…”

Section: Physical Properties Of Teffmentioning

confidence: 99%

Teff (Eragrostis tef) processing, utilization and future opportunities: a review

Barretto

Buenavista

Rivera

et al. 2020

Int J of Food Sci Tech

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The demand for food production has been constantly increasing due to rising population. In developed countries, for example, the emergence of regional production of old grains that are rarely utilized, along with the production of commonly consumed grains, has gained importance in recent years. These grains, known collectively as ancient or heirloom grains, have offered both farmers and consumers novel ways of cultivation and products with interesting taste, characteristics and nutritional value. Among the 30 000 plant species known, only five cereals currently provide more than 50% of the world's energy intakebread wheat (Triticum aestivum), rice (Oryza sativa), sorghum (Sorghum bicolor), millets (Panicum sp.) and maize (Zea mays). The excessive utilization of these selected species has a great potential to cause genetic losses and difficulty in bridging future agricultural demands. Teff (Eragrostis tef), an ancient grain extensively cultivated in countries like Eritrea and Ethiopia, provides promising alternatives for new food uses since its nutritional value is significantly higher than most others cereal grains. The absence of gluten allows flexibility in food utilization since it can be directly substituted to gluten-containing products. The grain also offers an excellent balance of essential amino acids and minerals, which can fulfil the recommended daily intake and eliminates the need for fortification and enrichment. This review provides a general overview of the physical properties and nutritional composition of teff grains related to processing and applications in the food and feed industries. The current status of teff utilization, as well as the challenges in production and commercialization, and future opportunities is presented and discussed.

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Teff Grain Physical and Chemical Quality Responses to Soil Physicochemical Properties and the Environment

Cited by 26 publications

References 41 publications

Teff [Eragrostis tef (Zucc.)] rainfed yield response to planting method, seeding density, and row spacing

Teff [Eragrostis tef (Zucc.)] rainfed yield response to planting method, seeding density, and row spacing

Silicon Enhances Biomass and Grain Yield in an Ancient Crop Tef [Eragrostis tef (Zucc.) Trotter]

Teff (Eragrostis tef) processing, utilization and future opportunities: a review

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