Carbon, nitrogen and phosphorus dynamics under continuous cultivation as influenced by farmyard manure and inorganic fertilizers in the savanna of northern Nigeria

Agbenin, John O.; Goladi, J T

doi:10.1016/s0167-8809(96)01123-1

Cited by 73 publications

(33 citation statements)

References 15 publications

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“…In Zaria, over the period 2002-2004, mean grain yield declined in all N treatments, despite substantial P and S applications. Hence, fertilizer application at rates well above those generally applied by farmers (Bationo et al 1998;Chianu and Tsujii 2004) appeared to be insufficient to sustain yield in continuous maize systems at both sites, which is in agreement with earlier observations (Jones 1971;Juo et al 1995;Agbenin and Goladi 1997;Tian et al 2005;Vanlauwe et al 2005). Many factors may have contributed to this decline, such as a deterioration of the soil physical and chemical properties due to soil acidification, reduced soil organic matter content, soil compaction, increasing shortages of nutrients or rising biotic pressures.…”

Section: Discussionsupporting

confidence: 90%

Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna

et al. 2008

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Legume-maize rotation and maize nitrogen (N)-response trials were carried out simultaneously from 1998 to 2004 in two distinct agro-ecological environments of West Africa: the humid derived savannah (Ibadan) and the drier northern Guinea savannah (Zaria). In the N-response trial, maize was grown annually receiving urea N at 0, 30, 60, 90 and 120 kg N ha -1. In Ibadan, maize production increased with N fertilization, but mean annual grain yield declined over the course of the trial. In Zaria, no response to N treatments was observed initially, and an increase in the phosphorus (P) and sulphur (S) fertilizer application rate was required to increase yield across treatments and obtain a response to N applications, stressing the importance of non-N fertilizers in the savannah. In the rotation trial, a 2-year natural fallowmaize rotation was compared with maize rotated with different legume types: green manure, forage, dualpurpose, and grain legumes. The cultivation of some legume types resulted in a greater annual maize production relative to the fallow-maize combination and corresponding treatments in the N-response trial, while there was no gain in maize yield with other legume types. Large differences in the residual effects from legumes and fallow were also observed between sites, indicting a need for site-specific land management recommendations. In Ibadan, cultivation of maize after the forage legume (Stylosanthes guianensis) achieved the highest yield. The natural fallow-maize rotation had improved soil characteristics (Bray-I P, exchangeable potassium, calcium and magnesium) at the end of the trial relative to legume-maize rotations, and natural fallow resulted in higher maize yields than the green manure legume (Pueraria phaseoloides). In Zaria, maize following dual-purpose soybean achieved the highest mean yield. At both sites, variation in aboveground N and P dynamics of the legume and fallow vegetation could only partly explain the different residual effects on maize.

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Section: Discussionsupporting

confidence: 90%

Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna

et al. 2008

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“…Average values of 0.29 g kg -1 and 4.41 cmol kg -1 at 0 -15 cm depth ( (Table 3) were obtained. This may be due to lack of return of crop residues common with the farmers practice in the study area, also the total N and CEC are directly linked to 1:1 clay mineral inherent in the soils, being sandy (Jones and Wild, 1975;Agbenin and Goladi, 1997). The results obtained agrees with reports of Agboola (1990) that tropical soils are intrinsically low in N. The CEC values were also similar to those reported by Graham and Singh (1997).…”

Section: Methodssupporting

confidence: 88%

“…The quantity of nutrients to be applied to complement soil fertility and the relative level of nutrients in the soil (O'Hoore, 1992). Agbenin and Goladi (1997) reported rapid decline of organic matter, followed by extensive leaching of basic cations and rapid development of acidity when most savanna soils undergo continous cultivation. Soils with >50% base saturation indicates eutric (more fertile) while those with <50% base saturation are dystic (less fertile) as indicated in the FAO soil map of the world classification.…”

Section: Introductionmentioning

confidence: 99%

Soil Fertility Assessment of The Lugu Main Canal Of Wurno Irrigation Project, Sokoto State, Nigeria, Five Years After Rehabilitation.

Dikko¹,

Abdullahi²,

Ousseini³

2011

Nig J Bas App Sci

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ABSTRACT:A study was conducted during the 2000/2001 irrigation season to assess the soil fertility and the pattern of its variation with depth in the Lugu main canal of Wurno Irrigation Project. Soil samples were collected from four randomly chosen transects across the field at two sampling spots in each transect. The samples were taken at 0 -15, 15 -30 and 30 -45 cm depths from each spot. Soil chemical properties such as pH, total N, available P, CEC and exchangeable bases were determined. The soils had average pH of 7.09, 6.92 and 6.87 at the 0-15, 15-30 and 30-45 cm depths, respectively. The CEC, available P, and total N were very low at all depths. CEC and total N decreased with depth. Ca and K were also very low while Mg was moderate at all depths. Na on the other hand, was high at the surface and moderate at lower depths. The % base saturation was high at all depths. The soils were low in fertility and need the adoption of proper management in terms of organic and inorganic fertilizer application and quality irrigation practices to resuscitate and sustain the soil fertility.

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“…Several studies of organic C content following conversion of tropical forest to pasture have shown a range of responses, including increases, decreases, or no net long-term changes in soil C (Cerri et al, 1991;Tiessen et al, 1992;Neill et al, 1997;Agbenin and Goladi, 1997;Agbenin and Adeniyi, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…Soil microbial biomass and activity have been used as a sensible indicator for the assessment of the effects of soil pollutants (Araújo et al, 2003;Araújo and Monteiro, 2006) and management practices (Agbenin and Goladi, 1997;Ananyeva et al, 1999;Oliveira et al, 2004;Araújo et al, 2008). However, there are few studies focusing on the effect of practices used in pastures on soil microbial biomass and activity, mainly in tropical regions (Oliveira et al, 2004;Agbenin and Adeniyi, 2005).…”

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confidence: 99%

Changes in soil microbial biomass and activity in different Brazilian pastures

Lopes

Salviano

Araújo

et al. 1970

Span. j. agric. res.

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Microbial biomass and activity are useful indices for assessing changes in soil ecosystems. The impact of different pastures on microbial biomass and activity was studied in a long-term experiment in Northeast Brazil. For our study the pastures were divided into plots: a) Brachiaria brizantha; b) Leucaena leucocephala; c) Cynodon dactilon; d) Panicum maximum. An adjacent area with native vegetation was used as reference. Soil samples were collected in 0-10 and 10-20 cm depths. No significant differences in soil organic C (Corg) was found among all plots at 0-10 and 10-20 cm depth. Soil microbial C (Cmic) values were higher in native forest and P. maximum when compared to the other plots. The soil basal respiration (CO2) values were similar among all plots evaluated. However, respiratory quotients (qCO2) were significantly lower in native forest and P. maximum when compared to other plots, at 0-10 cm depth. Values of fluorescein diacetate (FDA) hydrolysis were significantly higher in native forest and P. maximum, while values of dehydrogenase activity were found to be signif icantly higher in native forest, C. dactilon and P. maximum. Soil microbial biomass and activity changed when a native forest was converted to pastures. These changes were positive with the inclusion of P. maximum by the high input of C sources.

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Carbon, nitrogen and phosphorus dynamics under continuous cultivation as influenced by farmyard manure and inorganic fertilizers in the savanna of northern Nigeria

Cited by 73 publications

References 15 publications

Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna

Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna

Soil Fertility Assessment of The Lugu Main Canal Of Wurno Irrigation Project, Sokoto State, Nigeria, Five Years After Rehabilitation.

Changes in soil microbial biomass and activity in different Brazilian pastures

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