Comment on “Run-off water harvesting for dry spell mitigation in maize (Zea mays L.): Results from on-farm research in semi-arid Kenya” by Jennie Barron and George Okwach, Agricultural Water Management 74 (2005) 1–21

2006 ◽  
Vol 82 (1-2) ◽  
pp. 247-250
Author(s):  
Jens Raunsø Jensen
2019 ◽  
pp. 27-40
Author(s):  
Anutra Wannaviroj ◽  
Thavivongse Sriburi

This paper describes the selection of assessment criteria to assess agricultural water management schemes for on-farm ponds to support sustainable rain-fed agriculture, guided by the New Theory of His Majesty King Bhumibol Adulyadej. The candidate set of criteria was obtained from several international and national sources related to sustainable rain-fed agriculture and the New Theory. The criteria were reviewed and modified by the expert team based on the goals of the New Theory in order to define an initial site-specific set of criteria that conform with the context of socio-topographical conditions of Thailand. The team screened,assessed, and prioritized the criteria using three multiple criteria decision-making (MCDM) techniques- ranking, rating and pairwise comparisons- in order to attain the final locality set of the assessment criteria. The process resulted in selection of a set of three criteria, with 15 sub-criteria. This final locality set of criteria was used to conduct a sustainability assessment of agricultural water management schemes of on-farm ponds. Criterion 1 (The pursuit of self-reliant agriculture based on limited agricultural land and water resources) was given the highest weighting, followed by Criterion 3 (The pursuit of sustainable rain-fed agriculture) and Criterion 2 (Self-sufficiency of household daily consumption and income generation). At the sub-criterion level, sub-criterion 1.1 (Land use efficiency) and sub-criterion 1.5 (Water use efficiency) of Criterion 1; sub-criterion 2.1 (Food self-sufficiency) of Criterion 2; and sub-criterion 3.1 (Mixed farming) of Criterion 3 were given the highest weightings. Further research is needed to examine the applicability and reliability of the assessment criteria in field situations.


1970 ◽  
Vol 3 ◽  
pp. 23-27 ◽  
Author(s):  
A. GILANI ◽  
H. KERMANSHAHI ◽  
M. GHOLIZADEH ◽  
A. GOLIAN

Agricultural water management in arid and semi-arid countries such as Iran is of utmost importance. Alterations of water as a major component of each bio system through magnetization have been reviewed in this study. Magnetization process has been used as green technology in industry and agriculture with controversial results. Properties of water such as pH, hydrogen bonds, temperature, structure and its ions can be affected by an external magnetic field. Subsequent modifications have substantial impacts on water quality that is determined for optimum plant and animal production. There are some reports among numerous studies in agronomy, gardening and animal husbandry which claim fruitful influence of this treatment both qualitatively and quantitatively. Nevertheless, there are some controversial reports on the effects of Magnetization. In conclusion, the response of organismsdepends on Magnetization time and intensity, water quality and plant or animal species. These variables should be taken into account for further studies regarding this mysteries process.


2016 ◽  
Vol 8 (1) ◽  
pp. 127-141 ◽  
Author(s):  
Daniel Bekele ◽  
Tena Alamirew ◽  
Asfaw Kebede ◽  
Gete Zeleke ◽  
Assefa M. Melese

The national economy and food security of many sub-Saharan countries relies on rain-fed agriculture, hence the impact of rainfall variability is highly significant. The intent of this study is to characterize rainfall variability and trend in Awash River Basin for agricultural water management using standard rainfall statistical descriptors. Long-term climate data of 12 stations were analyzed. Onset and cessation dates, length of growing period (LGP) and probability of dry spell occurrences were analysed using INSTAT Plus software. The Mann–Kendall test and the Sen's slope method were used to assess the statistical significance of the trend. The results show high variability of rainfall (38–73%), LGP (30–38 days) and high probability of dry spell occurrence (up to 100%) during the Belg season (the short rainy season from March to May) compared with the Kiremt season (the main rainy season from June to September) in all stations. Belg season showed a non-significant decline trend in most of the stations, whereas the Kiremt season indicated the contrary. The finding also revealed that supplementary irrigation is vital, especially in the Belg season to cover up to 40% of the crop water requirement deficit.


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