scholarly journals The Role of Integrated Nutrient Management System for Improving Crop Yield and Enhancing Soil Fertility under Small Holder Farmers in Sub-Saharan Africa: A Review Article

2018 ◽  
Vol 2 (5) ◽  
Author(s):  
Geremew Biramo
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Nutrient Management ◽  
Review Article ◽  
Sub Saharan Africa ◽  
Integrated Nutrient Management ◽  
Small Holder Farmers ◽  
Sub Saharan ◽  
Small Holder

Integrated Nutrient Management in the Farming Systems of the Savannas of Northern Nigeria: What Future?

2005 ◽  
Vol 34 (3) ◽  
pp. 197-202 ◽  
Author(s):  
Jonas Nwankwo Chianu ◽  
Hiroshi Tsujii
Keyword(s):  
Soil Fertility ◽  
Nutrient Management ◽  
Farming Systems ◽  
Sub Saharan Africa ◽  
Northern Nigeria ◽  
Integrated Nutrient Management ◽  
Fertilizer Rate ◽  
Dual Purpose ◽  
Sub Saharan ◽  
The Impact

Integrated nutrient management (INM) is being promoted in Sub-Saharan Africa. The authors examined INM practices among farmers in the savannas of northern Nigeria in the hope of making suggestions to improve the impact of INM practices on soil fertility. The results indicate that, although the various components of INM are available in the farming systems, only a partial integration is occurring with limited impact on soil fertility. The major constraints include: the harsh savanna environment, lack of supportive institutions and labour, high fertilizer prices and inadequate availability of organic manure. Strip cropping of improved sorghum (Sorghum bicolor) and dual-purpose cowpea (Vigna unguiculata L.) and integrated fertility management using neem foliage and half the recommended fertilizer rate have great potential. The study recommends more research, extension and policies to enhance the adoption and impact of INM practices.

scholarly journals A study on plant nutrition balance, soil fertility and economic returns of investments

2020 ◽  
Vol 5 (01) ◽  
pp. 31-39
Author(s):  
Attia El Gayar
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Plant Nutrition ◽  
Scaling Up ◽  
Economic Returns ◽  
Soil Fertility Management ◽  
Fertility Management ◽  
Nutrition Balance ◽  
Small Holder Farmers ◽  
Small Holder

Plant nutrition balance plays a major role in the universal need to increase food production to meet the demands of the growing world population. Fertilizer application resulted in marked crop yield increases, which for most crops were more than hundred. The extent to which fertilizers are used still differs considerably between various regions of the world. Soil nutrient status is widely constrained by the limited use of inorganic and organic fertilizers and by nutrient loss mainly due to erosion and leaching. Many small holder farmers do not have access to synthetic fertilizer because of high price of fertilizers, lack of credit facilities, poor distribution, and other socio-economic factors. Consequently, crop yields are low, in fact decreasing in many areas, and the sustainability of the current farming system is at risk. Therefore, the aim of this review was to review the role of integrated Plant nutrition balance management for improving crop yield and enhancing soil fertility under small holder farmers in dry areas, and recommend the appropriate approaches for enhancing soil fertility and increasing crop yield for small holder farmers in dry and semi-dry areas. These are the key challenges of adoption in the scaling up of such alternative soil fertility management practices to millions of small-scale farmers. There is a need, therefore, for research and extension to sort out issues of adoption and scaling up of the available options. In order to address soil fertility problems, potential synergies can be gained by combining technical options with farmers’ knowledge as well as training of farmers and development agent on new soil fertility management approaches. So, the results of this review showed that, the integrated application of organic and inorganic fertilizers improve productivity of crops as well as the fertility status of the soil. The reasons for this are many, which include access or availability of inputs, use of organic resources for other purposes in place of soil fertility, nutrient balancing, collecting, transporting and management of organic inputs and economic returns of investments.

Effect of Integrated Nutrient Management on Rice-Greengram Cropping Sequence

2020 ◽  
Author(s):  
Nitin N. Gudadhe ◽  
S. R. Imade ◽  
J. D. Thanki
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Seed Yield ◽  
Nutrient Management ◽  
Block Design ◽  
Residual Effect ◽  
Residual Effects ◽  
Soil Parameters ◽  
Integrated Nutrient Management ◽  
Cropping Sequence

Background: Intensive rice cultivation for longer periods continuously resulted in poor soil fertility. Inorganic fertilizers along with integrated and judicious use of different organic sources like FYM, vermicompost, green manure etc. could be an effective choice for enhancing crop yield. A synergistic effect on crop yield is reported through common use of fertilizer and organics which also improve soil fertility. The residual effects of organic manures applied to the preceding crops can be available to succeeding crop. Therefore, this experiments was planned to throw light on the use integrated nutrients through organic and inorganic sources on rice and its residual effect on succeeding greengram. Methods: A field experiment was conducted to study the effect of integrated nutrient management on rice-greengram cropping sequence at Navsari Agricultural University, Gujarat during 2012-15. Five nutrient combinations were evaluated in randomized block design for rice and its residual effect on productivity on succeeding greengram was studied with three fertilizer levels in split plot design. Result: Application of general recommended dose of fertilizers (RDF) to rice has increased growth, yield, quality, economics and improved soil properties and the residual effect to succeeding greengram have also gave significantly higher greengram seed yield and other important parameters and this was succeeded by application of 75% RDF through chemical fertilizer + 25% RDF through vermicompost. Among different levels of fertilizers to greengram, application of 100% RDF gave highest greengram seed yield, economics and soil parameters over other two levels.

Do diatomaceous earths have potential as grain protectants for small-holder farmers in sub-Saharan Africa? The case of Tanzania

2008 ◽  
Vol 27 (1) ◽  
pp. 44-70 ◽  
Author(s):  
T.E. Stathers ◽  
W. Riwa ◽  
B.M. Mvumi ◽  
R. Mosha ◽  
L. Kitandu ◽  
...  
Keyword(s):  
Sub Saharan Africa ◽  
Grain Protectants ◽  
Small Holder Farmers ◽  
Sub Saharan ◽  
Small Holder

scholarly journals Detection and Distribution of Viruses Infecting Field-grown Sweetpotato in East Africa

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 972A-972
Author(s):  
Douglas Miano ◽  
Don LaBonte ◽  
Christopher Clark
Keyword(s):  
East Africa ◽  
Virus Disease ◽  
Lake Victoria ◽  
Sub Saharan Africa ◽  
Mottle Virus ◽  
Small Holder Farmers ◽  
Sub Saharan ◽  
First Time ◽  
Small Holder ◽  
Infected Vine

Sweetpotato is an important staple food crop in Sub-Saharan Africa, with production being concentrated in East Africa, particularly around Lake Victoria. Productivity of the crop is greatly constrained by viral diseases. Four main viruses have consistently been detected from various surveys done in the region viz., sweetpotato feathery mottle virus (SPFMV), sweetpotato chlorotic stunt virus (SPCSV), sweetpotato mild mottle virus (Sp.m.MV), and sweetpotato chlorotic fleck virus (SPCFV). The most severe symptoms have been caused by co-infection with SPCSV and SPFMV, resulting in the synergistic sweetpotato virus disease (SPVD). Some local sweetpotato genotypes have been reported to recover from, or have localized distribution of SPVD, suggesting that the disease is not fully systemic. This has led to the suggestion that uninfected cuttings may be obtained from previously infected plants. Experiments were set to determine the possibility of obtaining cuttings long enough for propagation that are free from virus infection. This would form a basis for recommending to the local small-holder farmers of a way to reduce losses due to the disease. Field-grown sweetpotato vines were cut into three pieces (15, 15–30, and >30 cm from the apex) and tested for SPCSV and SPFMV. Nine genotypes were selected from a group of 21 local clones and used for this study. The two viruses were equally present in all the three sections of infected vines, indicating that it is not easy to obtain a virus-free cutting for field propagation from an infected vine. Virus assays in the past has mainly been limited to the use of serological methods. Use of PCR resulted in detection of begomoviruses infecting sweetpotatoes for the first time in the region.

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