|
| << vorige |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 10 gevonden artikelen
| Titel: |
The Effects of Land Configuration and Wood-Shavings Mulch on the Properties of a Sandy Loam Soil in Northeast Nigeria. 1. Changes in Chemical Properties |
| Auteur: |
Chiroma, AM. Folorunso, OA. Alhassan, AB. |
| Verschenen in: |
Tropicultura |
| Paginering: | Jaargang 24 (2006) nr. 3 pagina's 129-134 |
| Jaar: |
2006 |
| Inhoud: |
In the savanna region of Nigeria, the search continues for practices that will improve the productivity of the fragile soils characterized by low organic matter and plant nutrients, poor structure and very high permeability. A 4-year (1999-2002) field experiment was conducted to determine the effects of land configuration and wood-shavings mulch on soil chemical properties under rainfed sorghum. The treatments were Flat Bed (FB as control), Open-ridge (OR), Tied-ridge (TR,) Flat bed with wood-shavings mulch (FBM), Open-ridge with wood-shaving mulch (ORM) and Tied-ridge with wood-shavings mulch (TRM). Wood-shavings at the rate of 5 t/ha were used in 1999 but the rate was increased to 10 t/ha during subsequent years to ensure adequate soil coverage. Soil samples from 0.075 m depth were obtained at the end of the third (2001) and fourth (2002) cropping seasons and analysed for pH, organic carbon (OC), total nitrogen (TN), available P (AP), exchangeable acidity, exchangeable K+, Ca++ Mg++ and Na+. The results indicate that over the 4-year study period, the topsoil in all the treatments acidified but the rate of acidification was much faster in bare treatments (FB, OR and TR) than in the mulched treatments (FBM, ORM and TRM), irrespective of tillage methods. In 2002; OC, TN and AP in the top 0-0.075 m layer of the wood-shavings amended soil were 24-29, 15-23 and 92-112% higher, respectively, than in the unamended control. OC in this soil layer correlated with TN (r= 0.98**) and AP (r= 0.97**). Similarly, the three bare treatments experienced a rapid loss in exchangeable K+, Ca++ Mg++ and Na+ between 1999 and 2002 but the reduction was much greater in OR and TR treatments compared to the FB treatment. FBM, ORM and TRM treatments significantly improved the topsoil fertility with respect to exchangeable K+, Ca++ and Mg++ content. This was attributed to the release of these exchangeable cations from the decomposing organic mulch. These results demonstrate the potential of combining ridge tillage with residue mulch in improving the fertility status of the coarse textured soils in the savanna region of northeast Nigeria. |
| Uitgever: |
Agri-overseas (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 10 gevonden artikelen
| << vorige |