Efficient fertilizer use for increased crop production: The humid Nigeria experience

Maduakor, H. O.

doi:10.1007/bf01048990

Cited by 5 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Predominantly, the soil texture in the area ranges from sandy loam to sandy clay loam (Agboola, 1979). However such soil tend to have very low nutrient retention potentials (Ekpete, 1972;Maduakor, 1991) and are highly prone to nutrient loss, especially the base cations, such as potassium (K + ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Poultry Manure, Defatted Palm Kernel Cake and Their Combinations on the Yield Performance of Sweet Potato (Ipomoea batatas (L.) Lam) and Chemical Characteristics of a Sandy Loam Ultisol of South-Eastern Nigerian

Okore¹,

Okonkwo²,

Osuaku³

2015

JAS

View full text Add to dashboard Cite

A two-year (2010 and 2011 cropping seasons) field trial was carried out on a Sandy loam Ultisol in south-eastern Nigeria to evaluate the effect of Poultry manure (PM), Defatted palm kernel cake (DPKC) and their combinations (PM + DPKC) on the yield of sweet potato and soil chemical properties. The experiment was laid-out in a randomised complete block design with the treatments consisting of PM, DPKC, PM + DPKC (1:1 by weight) applied at the rates of 5 and 10 t ha -1 each and a control (no soil amendment).The treatments were replicated four times. A significantly (P ≤ 0.05) higher sweet potato yield performances and improved soil chemical characteristics were recorded from plots that received any of the soil amendments compared to the unamended (control plots). Apart from the combined application of PM and DPKC at the rate of 5 t ha -1 which gave a significantly higher yield values relative to single application of either PM or DPKC at similar rate; the effect of the other treatments at the same rate of application on the crop yield and yield related parameters did not differ significantly. However, plots that had either DPKC alone or in combination with PM gave a significantly higher root:vine yield ratio and commercial harvest index, irrespective of the rate of application. Similarly, combined application of PM and DPKC resulted in a significantly higher soil org. C, available P and exchangeable bases. The crop yield values and soil properties recorded from plots treated with PM + DPKC at the rates of 5 and 10 t ha -1 did not differ significantly, hence combined application of PM and DPKC at the rate of 5 t ha -1 could be considered suitable for sweet potato yield and soil nutrient conservation for sandy loam ultisol of south-eastern Nigeria.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Poultry Manure, Defatted Palm Kernel Cake and Their Combinations on the Yield Performance of Sweet Potato (Ipomoea batatas (L.) Lam) and Chemical Characteristics of a Sandy Loam Ultisol of South-Eastern Nigerian

Okore¹,

Okonkwo²,

Osuaku³

2015

JAS

View full text Add to dashboard Cite

show abstract

Unacidulated and partially acidulated Phosphate Rock as P sources in an acid Ultisol in the forest zone of southeastern Nigeria

Maduakor

1994

J Plant Nutrition & Soil

Self Cite

View full text Add to dashboard Cite

The relative agronomic effectiveness (KAE) of phosphatc rwh II'KI and its SO 5% partially acidulatct forni (PAPR) tless soluble P sources) rclative to singlc supcrphospliate (SSP) and diamnionium phosphate (DAI') (soluble sources) was studied in a two year field trial with mni7c in an acid Ultisol in the forest zone of southeastern Nigeria.All the P sources incrcascd top growth. grain. wid stover yields over the control. The KAE of PR relative to SSP was lower in the first yeiir (25 and 38 4 for dry niatter (DM) and grain yicld (GY) respcciivcly) compand io the second (64 and SX ' 6 for DM and GY rcspcctivcly). Partial acidulation increased the yields by 17 and 7 % for DM and GY. respectively. in the first year but not in the second. The RAE of PR aid PAPK relative to DAP followed the same trend.The responx curves of DM. and GY to rates of applied IJ showed thui lower grain yields were produced in the first compared 10 the sccond y a r . l h c soluble and Ic olublc sources built itp the Bray I cxtrdctable P lo levcls adcquatc for maizc production in ihe agriwcological zone.

show abstract

Nutrients in the West African Sudano‐Sahelian zone: Losses, transfers and role of external inputs

Buerkert

Hiernaux²

1998

J Plant Nutrition & Soil

View full text Add to dashboard Cite

Crop growth on acid sandy soils of the Sudano‐Sahelian zone is primarily limited by the low amounts of organic matter and available mineral nutrients in the topsoil. The shortening of fallow periods with population growth, the exploitation of fire wood, spatial nutrient transfers by wind and water and net nutrient exports with crop yields in the order of 15 kg nitrogen (N) 2 kg phosphorus (P) and 15 kg potassium (K) ha−1 yr−1 for traditional fields planted to pearl millet (Pennisetum glaucum L.) in the southern Sahel have exhausted these resources. Large productivity declines in the prevailing agro‐pastoral systems are the consequence. Data are presented to show bow nutrient exports at the level of individual fields, through grain yields and biomass removal as forage, firewood, construction material, and also through run‐off, wind and water erosion, leaching and volatilisation, are either losses for the ecosystem or sources of nutrients transferred within the ecosystem. Livestock is a vector of nutrients from rangelands to manured fields through forage intake and excretion and helps to shortcut nutrient cycles, but it is also a net consumer of organic matter and minerals. Through the effects of trampling on the soil and of grazing on the vegetation composition and production, livestock also indirectly affects the cycling and transfer of nutrients. Net nutrient inputs by heavy rains causing overland flow, dust deposition and through biological nitrogen fixation, are also unequally distributed and thus aggravate the fertility gradient from large nutrient ‘source’ areas such as rangelands to small ‘sink’ areas such as fallows, low lands, temporary lakes and river benches. At a finer resolution, shrubs and trees with their alternating periods of nutrient storage and recycling in leaves and wood, micro‐depressions, termite mounts and ant nests become localised points of nutrient concentration and high crop productivity. To balance losses of nutrients in these integrated systems and to obtain sustainable increases in production, external inputs of nutrients are necessary. These may be introduced by two different pathways, either via mineral fertilisers applied to croplands or via externally produced supplements fed to livestock. These pathways are complementary and each one has direct effects on the other. Fertiliser application to croplands affect livestock through the increase in available forage and crop residue feed, whereas feed supplementation affects crop production through higher amounts and better quality of manure. The adoption of either strategy by farmers requires a high nutrient use efficiency at low cost. Data from regional field trials revealed increases in total dry matter (TDM) of cereals with broadcast annual P application at 13 kg ha−1 ranging across three years from 19 to 88% for rockphosphate and from 34 to 102% for single superphosphate (SSP). Still, a low‐external input approach seemed more advantageous to farmers. The placement of NPK fertiliser at 4 kg P ha−1 with the seed at or shortl...

show abstract

Efficient fertilizer use for increased crop production: The humid Nigeria experience

Cited by 5 publications

References 38 publications

Effect of Poultry Manure, Defatted Palm Kernel Cake and Their Combinations on the Yield Performance of Sweet Potato (Ipomoea batatas (L.) Lam) and Chemical Characteristics of a Sandy Loam Ultisol of South-Eastern Nigerian

Effect of Poultry Manure, Defatted Palm Kernel Cake and Their Combinations on the Yield Performance of Sweet Potato (Ipomoea batatas (L.) Lam) and Chemical Characteristics of a Sandy Loam Ultisol of South-Eastern Nigerian

Unacidulated and partially acidulated Phosphate Rock as P sources in an acid Ultisol in the forest zone of southeastern Nigeria

Nutrients in the West African Sudano‐Sahelian zone: Losses, transfers and role of external inputs

Contact Info

Product

Resources

About