Short-term effects of tillage practices on soil properties under Tef [Eragrostis tef (Zucc. Trotter)] crop in northern Ethiopia

Gebreyesus Brhane Tesfahunegn

Agricultural Water Management, 2015, vol. 148, issue C, 241-249

Abstract: Tef crop shares the largest area of production in Ethiopia. However, its productivity is lower than 0.7tonha−1 which is mainly related to low soil fertility and moisture. An experiment was conducted using tef on Chromic Cambisols for two rainy cropping seasons (2008–2009) in northern Ethiopia. The objective was to assess the short-term effects of tillage frequencies on selected soil properties under continuous tef cropping system. The layout of the experiment was randomized complete block design using three tillage treatments, namely, conventional plowing (T1), four times plowing (T2), and reduced plowing (T3). A statistically significant (P≤0.05) effect of tillage treatments on soil moisture (SM) was determined during the experimental periods. SM was higher in T2 in both years followed by T3 in 2009. Soil physical properties (bulk density, BD; total porosity, TP; soil structural stability index, SSI) and soil nutrients (total nitrogen, TN; organic carbon, OC; cation exchange capacity, CEC; potassium, K) were significantly deteriorated by the application of T1 for consecutive two-years. The Paired-Samples T-Test showed significant improvements in these soil parameters due to T2 and T3 in 2009 as compared to the corresponded values in 2008. For example, there were significant increments in SM (11%), TP (18%), SSI (12%), TN (1.2 times), phosphorous (5%), OC (13%), and CEC (15%); but significantly decreased in OC: TN (48%) and BD (4%). Generally, despite the non-significant differences between the effects of T2 and T3, higher TP, SSI, OC, CEC; and lower BD were observed by T3 in 2009. Based on such short-term results of T3 it is possible to forecast its significant long-term effects on soil properties. Thus, for sustainable use of soil systems in the long-term due attention should be given to practice T3 as soil and water management practice in the study area conditions.

Keywords: Soil fertility; Soil moisture; tef cropping; Tillage treatment (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377414003242
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:148:y:2015:i:c:p:241-249

DOI: 10.1016/j.agwat.2014.10.004

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().