scholarly journals Pattern of adoption and constraints to adoption of improved cowpea varieties in the Sudan Savanna zone of Northern Nigeria

2015 ◽  
Vol 7 (12) ◽  
pp. 322-329 ◽  
Author(s):  
J Mbavai J ◽  
B Shitu M ◽  
Abdoulaye T ◽  
Y Kamara A ◽  
M Kamara S
Keyword(s):  
Northern Nigeria ◽  
Cowpea Varieties ◽  
Sudan Savanna ◽  
Savanna Zone

Improving food crop production in the Sudan Savanna zone of Northern Nigeria

1976 ◽  
Vol 8 (6) ◽  
pp. 341-347 ◽  
Author(s):  
A H Kassam ◽  
M Dagg ◽  
J M Kowal ◽  
F H Khadr
Keyword(s):  
Crop Production ◽  
Food Crops ◽  
Northern Nigeria ◽  
Food Crop ◽  
Strong Function ◽  
Disaster Area ◽  
Crop Husbandry ◽  
Food Crop Production ◽  
Sudan Savanna ◽  
Savanna Zone

Poor rainfall in 1972 and 1973 led to much of the area in the Sudan Savanna zone of Nigeria being declared a disaster area due to the widespread failures of major food crops under indigenous practices. However, in the same circumstances, a group of farmers using improved seed, fertilizer and better methods, obtained yields which were satisfactory. Crop losses from “drought” are a strong function of the cultivars grown and of the level of crop husbandry.

Soil Fertility under Continuous Cultivation in Northern Nigeria

1970 ◽  
Vol 6 (3) ◽  
pp. 229-237 ◽  
Author(s):  
R. G. Heathcote
Keyword(s):  
Soil Fertility ◽  
Soil Acidity ◽  
Continuous Cultivation ◽  
Potassium Deficiency ◽  
Limiting Factors ◽  
Northern Nigeria ◽  
Organic Manures ◽  
Sudan Savanna ◽  
Savanna Zone

SUMMARYSoil acidity, incipient potassium deficiency, and a deficiency of one or more trace elements were limiting factors in three trials of long-term soil fertility changes under continuous cultivation in the Sudan Savanna zone of Nigeria. The effectiveness of organic manures is explained largely or wholly in terms of these factors, since no evidence has yet been found to suggest that the addition of organic matter as such is of value.

The Races of Sorghum in Nigeria: their Distribution and Relative Importance

1967 ◽  
Vol 3 (4) ◽  
pp. 275-286 ◽  
Author(s):  
D. L. Curtis
Keyword(s):  
Northern Nigeria ◽  
Relative Importance ◽  
Local Varieties ◽  
High Rainfall ◽  
Sorghum Production ◽  
Sudan Savanna ◽  
Savanna Zone

SummarySorghum is the principal foodcrop grown in Northern Nigeria. A survey of local varieties grown during the rains was carried out in 1958 and the 821 samples collected were assigned to seven morphologically distinct races, of which four are important. Varieties belonging to the Guinea race, with loose, open panicles, are mainly cultivated in high rainfall areas south of latitude 11°30′N. Further north, three races, Kaura, Farafara and Chad are grown in the dry Sudan Savanna zone. Varieties of these races have compact panicles and bulging grains. Estimates of the contribution made by each of the four major races indicate that the Guinea race accounts for nearly 50 per cent of the total sorghum production in Northern Nigeria.

The breeding season and diet of Arvicanthis in northern Nigeria

1989 ◽  
Vol 5 (4) ◽  
pp. 375-386 ◽  
Author(s):  
Safianu Rabiu ◽  
Martin Fisher
Keyword(s):  
Breeding Season ◽  
Food Supply ◽  
Rainy Season ◽  
Dry Season ◽  
Northern Nigeria ◽  
East African ◽  
African Savanna ◽  
Seasonal Differences ◽  
Sudan Savanna ◽  
Semi Arid

ABSTRACTThe breeding season and diet of the rat Arvicanthis was monitored from December 1983 to November 1985 in the semi-arid Sudan savanna at Kano, Nigeria, West Africa. Breeding began 1–2 months before the start of the rainy season and ceased at the beginning of the dry season. The diet of Arvicanthis was omnivorous, but with seasonal differences. Monocotyledons and dicotyledons predominated in the diet in the dry season, with seeds and insects increasing in the diet in the rainy season. The major differences between the ecology of Arvicanthis at Kano and on the East African savanna were that in East Africa the breeding season is longer and begins after the start of the rainy season. These and other dissimilarities between the biology of Arvicanthis in the two areas could be due to the effect of climatic differences on food supply and to the possible existence of different taxonomic groupings of Arvicanthis in the two regions.

Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana

2011 ◽  
Vol 16 (1) ◽  
pp. 61-76 ◽  
Author(s):  
Bright K. Amegashie ◽  
Charles Quansah ◽  
Wilson A. Agyare ◽  
Lulseged Tamene ◽  
Paul L. G. Vlek
Keyword(s):  
Nutrient Export ◽  
Small Reservoir ◽  
Sudan Savanna ◽  
Savanna Zone
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