scholarly journals Evaluation of sorghum (Sorghum bicolor (L.) Moench) variety performance in the lowlands area of wag lasta, north eastern Ethiopia

2020 ◽  
Vol 6 (1) ◽  
pp. 1778603
Author(s):  
Abebe Assefa ◽  
Aemiro Bezabih ◽  
Getawey Girmay ◽  
Tesfaye Alemayehu ◽  
Alemu Lakew
Keyword(s):  
Sorghum Bicolor ◽  
Eastern Ethiopia ◽  
North Eastern ◽  
Variety Performance ◽  
Sorghum Bicolor L

Genetic erosion and changes in distribution of sorghum (Sorghum bicolor L. (Moench)) landraces in north-eastern Ethiopia

2008 ◽  
Vol 6 (1) ◽  
pp. 1-10 ◽  
Author(s):  
H. Shewayrga ◽  
D. R. Jordan ◽  
I. D. Godwin
Keyword(s):  
Genetic Erosion ◽  
Eastern Ethiopia ◽  
Centre Of Origin ◽  
Pest Infestation ◽  
North Eastern ◽  
End Use ◽  
Farmer Surveys ◽  
Sorghum Bicolor L ◽  
Representative Samples ◽  
Made In

Ethiopia is believed to be the centre of origin and domestication for sorghum, where sorghum remains one of the main staple crops. Loss of biodiversity is occurring at an alarming rate in Ethiopia and crops, including sorghum, have long been recognized as vulnerable to genetic erosion. A major collection of sorghum germplasm was made in 1973 by Gebrekidan and Ejeta from north-eastern Ethiopia. A new collection of landraces was made in 2003, and these were field evaluated at Sirinka in 2004 along with representative samples from the 1973 collection. Farmer surveys and soil and climate surveys were also performed. Preliminary analysis demonstrated that some important landraces have disappeared either locally or regionally in the past 30 years and many other landraces have become marginalized. Landraces which are less preferred in terms of agronomic value and end use, and introductions, have become increasingly important. Late maturing landraces were found to be particularly vulnerable, with a number disappearing altogether. Farmers have become more risk averse, and factors such as declining soil fertility, more frequent drought and unreliable rainfall, and increased pest infestation have contributed to a change in farmer landrace selection. Data are presented on the variability and unique characters of some of the Ethiopian landraces, and implications for conservation are discussed.

Consórcio palma-sorgo sob lâminas de irrigação: balanço de água no solo e coeficientes da cultura

Agrometeoros ◽  
2020 ◽  
Vol 27 (2) ◽  
Author(s):  
Cleber Pereira Alves ◽  
Thieres George Freire Silva ◽  
Hygor Kristoph Muniz Nunes Alves ◽  
Alexandre Maniçoba da Rosa Ferraz Jardim ◽  
Luciana Sandra Bastos de Souza ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Sorghum Bicolor L

Objetivou-se neste estudo quantificar a evapotranspiração real (ETr) e máxima da cultura (ETc) e os coeficientes da cultura (Kc) do consórcio palma-sorgo. O experimento foi conduzido no município de Serra Talhada, PE. O delineamento usado foi em blocos ao acaso, envolvendo cinco lâminas de irrigação (0, 25, 50, 75 e 100% da evapotranspiração de referência - ETo), sob sistema de cultivo consorciado palma-sorgo. O clone de palma forrageira utilizado foi a Orelha de Elefante Mexicana (Opuntia stricta (Haw.) Haw.) e o cultivar de sorgo, Sorghum bicolor (L.) Moench, a SF 15. O sorgo foi conduzido durante dois ciclos (planta e rebrota) compreendidos em um ciclo anual da palma. A quantificação da ETr e da ETc foi realizada através do resíduo do balanço de água no solo (BAS) a cada 14 dias, com a mensuração dos componentes hidrodinâmicos. As determinações da ETc e do Kc foram realizadas com base na lâmina de 75% da ETo. Os componentes do BAS foram submetidos à análise de regressão, sendo testados modelos polinomiais. Com exceção da variação do armazenamento de água no solo, os demais componentes hidrodinâmicos do solo cultivado sob sistema consorciado palma-sorgo respondem linearmente ao aumento de lâminas de irrigação. A evapotranspiração média diária do consórcio palma-sorgo é igual a 3,0 mm dia-1, independentemente da lâmina de irrigação. Os coeficientes do consórcio palma-sorgo são iguais a 0,40, 0,68, 0,90 e 0,52 durante as fases I, II, III e IV de emissão de cladódios.

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