Evaluation of Phosphorus Response and Fertilizer Recommendations for Wheat Grown on Andosols in the South-Western Ethiopian Highlands

2021 ◽  
Author(s):  
Berhanu Dinssa Dibssata ◽  
Eyasu Elias ◽  
Getachew Agegnehu
Keyword(s):  
The South ◽  
Ethiopian Highlands ◽  
Phosphorus Response ◽  
Fertilizer Recommendations

Responses of plant functional types to environmental gradients in the south-west Ethiopian highlands

2011 ◽  
Vol 27 (03) ◽  
pp. 289-304 ◽  
Author(s):  
Desalegn Wana ◽  
Carl Beierkuhnlein
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Relative Abundance ◽  
Environmental Variables ◽  
Environmental Gradients ◽  
Plant Functional Types ◽  
The South ◽  
Ethiopian Highlands ◽  
South West ◽  
Functional Types

Abstract:Plant functional types across environmental gradients can be considered as a powerful proxy that reveals vegetation–environment relationships. The objectives of this study were to investigate the response in the relative abundance of plant functional types along altitudinal gradients and to examine the relationship of plant functional types to environmental variables. The study was conducted in the Gughe-Amaro Mountains, in the south-west Ethiopian highlands. We established 74 plots with an area of 400 m2(20 × 20 m) each along altitudinal ranges between 1000 and 3000 m asl. Data on site environmental conditions and on the abundance of plant functional types were analysed using the constrained linear ordination technique (RDA) in order to identify the relationships between plant functional types and environmental variables. Altitude, soil organic carbon, soil sand fraction and surface stone cover were significantly related to the relative abundance of plant functional types across the gradient. Tussocks and thorns/spines were abundant in lower altitudinal ranges in response to herbivory and drought while rhizomes and rosettes were abundant at higher altitudes in response to the cold. Generally our results show that topographic attributes (altitude and slope) as well as soil organic carbon play an important role in differentiating the relative abundance of plant functional types in the investigated gradient. Thus, considering specific plant functional types would provide a better understanding of the ecological patterns of vegetation and their response to environmental gradients in tropical regions of Africa prone to drought.

scholarly journals Fertilizer recommendations for maize production in the South Sudan and Sudano-Guinean zones of Benin

2017 ◽  
Vol 110 (3) ◽  
pp. 361-373 ◽  
Author(s):  
A. Saïdou ◽  
I. Balogoun ◽  
E. L. Ahoton ◽  
A. M. Igué ◽  
S. Youl ◽  
...  
Keyword(s):  
South Sudan ◽  
The South ◽  
Maize Production ◽  
Fertilizer Recommendations

Presidential Republicanism in the South, 1960

1962 ◽  
Vol 24 (2) ◽  
pp. 303-322 ◽  
Author(s):  
Bernard Cosman
Keyword(s):  
The South

Long-term Cyclic Variations of Prominences, Green and Red Coronae over Solar Cycles

2000 ◽  
Vol 179 ◽  
pp. 201-204
Author(s):  
Vojtech Rušin ◽  
Milan Minarovjech ◽  
Milan Rybanský
Keyword(s):  
Emission Lines ◽  
High Latitudes ◽  
Green Line ◽  
Solar Cycles ◽  
The South ◽  
Coronal Emission ◽  
Local Maxima ◽  
The North ◽  
Cyclic Variations

AbstractLong-term cyclic variations in the distribution of prominences and intensities of green (530.3 nm) and red (637.4 nm) coronal emission lines over solar cycles 18–23 are presented. Polar prominence branches will reach the poles at different epochs in cycle 23: the north branch at the beginning in 2002 and the south branch a year later (2003), respectively. The local maxima of intensities in the green line show both poleward- and equatorward-migrating branches. The poleward branches will reach the poles around cycle maxima like prominences, while the equatorward branches show a duration of 18 years and will end in cycle minima (2007). The red corona shows mostly equatorward branches. The possibility that these branches begin to develop at high latitudes in the preceding cycles cannot be excluded.

Sign in / Sign up

Export Citation Format

Share Document