African Journal of Agricultural Research Volume 10 Number 16 16 April 2015 ISSN 1991-637X .V``1H:J Q%`J:CQ`$`1H%C %`:C VV:`H.^ _ 1 ]%GC1.VR 1VV@C7 ^QJV0QC%IV ]V` 7V:`_ G7 H:RVI1H Q%`J: C8 ``1H:J Q%`J:C Q` $`1H%C %`:CVV:`H. ^ _ 1:JQ]VJ:HHV=Q%`J:C .: ]%GC1.V.1$.R_%:C1 7 QC1H1 VR :JR %JQC1H1 VR:` 1HCV51J#J$C1.51J:CC :`V:Q` :$`1H%C %`V 1JHC%R1J$ :`1R Q1C `VV:`H.:JR`V.:G1C1 : 1QJ5 :$` 1H% C %`: C $VJQI1H5 Q`VR]`QR%H `VV:`H.5 `VV ``%1 ]`QR%H 1QJ5]V 1H1RV H1VJHV5 ]Q .:`0V G1QCQ$7 :JR VH.JQ CQ$75 VVR H1VJHV `VV:`H.5 1``1$: 1QJ5 :$`1H%C %`:C VJ$1JVV`1J$5 1: V``VQ%`HV I:J:$VIVJ 5 I:`1JV H 1VJHV5 :$`QJQI75 :J1I:C H1VJHV5 ].71QCQ$7 :JRIQ`].QCQ$75 :_%:H%C %`V5 H`Q] H1VJHV5 R:1`7 H1VJHV5 VJ QIQCQ$75 ` 1. :JR`1.V`1V5`Q`V `75``V.1: V`H1VJHV5.Q` 1H%C %`V5]Q%C `7H1VJHV5Q1CH1VJHV57 VI: 1HG1QCQ$750V V` 1J:`75 01`QCQ$7501 1H%C %`V51VVRG1QCQ$75:$`1H%C %`:CVHQJQI1H:JR:$`1G%1JV8CC :` 1HCV]%GC1.VR1J :`V]VV`R `V0 1V1VR8 QJ :H R1 Q`1:C``1HV7 :=:`:H:RVI1H=Q%`J:C8Q`$ VC] V@7 .VC]RV@:H:RVI1H=Q%`J:C8Q`$ VG1 V7 . ]7LL1118:H:RVI1H=Q%`J:C8Q`$L=Q%`J:CL '%GI1 I:J%H`1] QJC1JV . ]7LLI8:H:RVI1H=Q%`J:C8IVL R1 Q` (`Q`8)88 I%: `8:I]1R1 : 1C V1Q #R1 Q`5``1H:J Q%`J:CQ`$`1H%C %`:CVV:`H. %: 1QJ:C$`1H%C %`:CVV:`H.&Q%JR: 1QJ^%*#&_5 H:RVI1H Q%`J :C8 J1I:CVV:`H.-J 1 % V * 1:JJ 1 :5 *`VVHV8 `8(:J:$1Q : * CQ`Q% R(:JV` 1 $:GQ`: Q`7Q`%% `1 1QJ5 `8.:J$ %:J<. 1 &:H%C 7Q`V V`1J:`7(VR1H1JV5 $:GQ`: Q`7Q`/]:HVVH.JQCQ$75 `1 Q CVJ10V`1 7Q`.V:CQJ1@15 J10V`1 7Q`VH.JQCQ$7^._41CQJ@:CC1Q#]QQ5 *`VVHV8 &1JC:JR 8 (`Q`8 `8GR%C ,: =VVR `8,GQ7:8 %`%R 1 +V]:` IVJ Q`,Q :J75J10V`1 7Q`* %=`: 5- JR 1:5 -J V`J: 1QJ:C$10V QH@VV:`H.-J 1 % V^-$-_ +1`VH Q`.Q` 1H%C %`V5 08:8,Q6 %:1`QG15 :JR C:JR H:]1J$8 4VJ7 :8 -JR 1:8 `8JR`V 1G1C (`Q`8'%CV7I:J ) 1 :J 0`Q`VQ`Q`:J$VC:JR/H1VJHV +V]:` IVJ Q`/Q1C/H1VJHV:JR0C:J %% `1 1QJ5 +V] 8Q`J1I:C:JR:J$V/H1VJHV &:H%C 7Q`$`1H%C %`V5 ,Q65(/9R-%V1(V61HQ/ : VJ10V`1 7$ : J@:`:J10V`1 75 9`%HV5 J@:`:R4#8 %( ^/_8 (`Q`87Q .Q 1 `8,. ': :` 1 *`:R%: V/H.QQC 1HVVV:`H.-J 1 % VQ`- `:J5 *:J$JV%J$RQJ=%%: 1QJ:CJ10V`1 7 IQ CR- `:J8 *:J$JV%J $5 *:J$1QJRQR 5 `8$`1HQC: RQ1 4Q`V :8 J10V`1 7Q` VJJVVV5 %85 /8 `8,. ,) 0) -90^%VI: QRV_5+1`VH Q`: VQ`VV:`H.5 (`Q`8Q` 0:1V` ,1R.:J9.:JR`:4`1.1 +V]:` IVJ Q`-H. .7QCQ$7:JR&1.V`1V/H1VJHV 11:01R7:C:7:5 08:84:C7:J15%:R1:50-%R 5 .QRVJ10V`1 750:,Q6 5 V , VJ $:C8 /Q% .` `1H:8 -JR 1:8 (`Q`81J$@:1 % (`Q`8:I1R . R, -J 1 % VQ` IQ].V`1H0.71H5 J10V`1 7Q`/H1VJHV:JRVH.JQCQ$75 9.1JVVH:RVI7Q`/H1VJHV5 .Q%:`1 ,Q%VIR1VJV5 ,8085 #$RC1:5 C$1V` 5 ,V1=1J$ 5 C$V` 1:8 9. 1J:8 (`Q`8'.V1@. : 1%RR 1J `8$VCV5':I%VC . 1@ .VJ: +V]:` IVJ Q`(VR1H:C#CVIVJ QCQ$7 :JR +V]:` IVJ Q`9`Q]5/Q1C:JR0V ( :J:$VIVJ 5 Q61HQ CQ$75 :I1:.:IR:`R^.:IR:`RJ10V`1 7_ &VRV`:CJ10V`1 7Q`VH.JQCQ$7 %V1+VC.15 0(, 5@%`V5 -JR 1:8 %1$V` 1:8 (`Q`8.I:R `<:J 1 `88,8 `V$.VQ`V +V]:` IVJ Q`$`QJQI7:JR0C:J ,`VVR1J$ .VJ10V`1 7Q` .V/Q% .0 :H1`1H5 9QCCV$VQ`$`1H%C %`V /H.QQCQ`$`1H%C %`V:JR&QQRVH.JQCQ$7 -`:.:JJ10V`1 7Q`VH.JQCQ$7 C:`%:9:I]%5 -` :.:JR 5 ]1:5 -`:J8 /(:8 R1 Q`1:C Q:`R `8,Q.:IVR8 : 1Q%R `8 `:RCV76 *` 1 < : V`VQ%`HV +V] :` IVJ 5 VV:`H./H1VJ 1 5 V``V `1:C#J01`QJIVJ VV:`H.9VJ `V5 #J01`QJIVJ :CVH.JQCQ$7+1011QJ5 #J01`QJIVJ :CVV:`H.:JR1CRC1`V +V0VCQ]IVJ $VJH 7 ,: VCCV50:H1`1H%Q` .1V %: 1QJ:C $:GQ` : Q` 75 ^#+_5 ,: VCCV,C0R85 1 H. C:JR 5 :.1J$ QJ 5 08:8,Q6 5 G% +.:G15 /8 J1 VR`:G #I1`: V8 `8CI% 6V`.:`R $1I9Q -J V`J : 1 QJ :C5 `8 (.1CC1]V 1V` VCC1 V` J10V`1 7Q` %VG 1J$VJ 5 +V] 8$`1H%C %`V:JR*:IV (:J:$VIVJ 5 *V` I:J78 0:,: 5 %((5 0#5 5 `8 VC1J H.:` 7: /Q% . ` `1H:8 +`848/84`1.J:JVV:`H.QH1: V ^4 /4_5 (QCVH%C:`,1QCQ$7+1011QJ5 `8 QRQC`Q J$V` `VCR ,.:G.: QI1HVV:`H.9VJ `V ^, 9_5 +V]:` :IVJ QRV &1 1QCQ$3:5 `QIG:75 (%IG:1R 5 &:H%C :RRV V V` 1J:`1:5 -JR 1:8 $:]C:HV 5(QJ V01RVQ 5 `% $%:78 `8 :1<78 : 1. +V]:` IVJ Q` ,Q :J75 `8 1IQ .7 'I 1 . 0:J=:GJ10V`1 75 / :GCV9Q :$V59% CV $:JV 5 9. :JR 1$:`. 5 ,1RRV QJV59.1]]VJ.:I5 -JR 1:8 1C .1`V5/% +&8 48 `8'V7VR,Q.:II:R C1 :<: 01 J10V`1 7Q`&V`RQ115 `8 8)1H.QC: RQJ$Q5 +V]:` IVJ Q`&QQR/H1VJHV:JR VH.JQ CQ$75 9QCVQ:R5*%VC].5 (:.. :R5 :J :`1Q8%* / -`:J8 9:J:R:8 `8 :VI1J 0:0R1` `8 808 '1J$. 9:J:@@:CV:JV@1<(:` J10V`1 75 /H1VJ 1 -``1$: 1QJ:JR+`:1J:$V#J$1JVV`1J$+1011QJ5 +V]:` IVJ Q`/Q1C/H1VJHV5 9VJ `:C-J 1 % VQ`$`1H%C %`:C #J$1JVV 1J` $ V`<1Q$C%9:I]% ,.Q]:CR 5 (808 9:J:@@ :CV -JR 1:8 %`@V78 (`Q`8V<.QJ$ QJ$ (`Q`861Q0:JJ1 1JV CC1 0`Q`VQ` Q` $`QJQ I7 5 +V]:` IVJ Q`$`QVJ01`QJIVJ :C/H1VJHV :JR 9Q QJVV:`H.9VJ V`5 VH.JQ CQ$7 /.:JRQJ$H:RVI7Q`$`1H%C %`:C/H1VJHV5 1:CV&:J1J 5 1J:J ,QCQ$J: 9. 1J:8 - :C78 `8%I:JV Q%I (`Q`8%:JI1J .Q% 1 :J +1`VH Q`Q`VV:`H. $V:RV` 5 9QCCV$VQ`,1Q VH.JQCQ$7: -JJV` (QJ $QC1 : -J V$`: VR1HV0`QR%H 1QJ/7 VI 0`Q $`:I $`1H%C %`:CJ10V`1 75 ``1H:1HV9VJ V`^+_,0 5 -JJV`(QJ$QC1:$`1H%C %`:CJ10V`1 75 9Q QJQ%5 %Q8 3.:Q%+:/ `VV 5 ,VJ1J8 .Q..Q 5088 9. 1J:5 9. 1J:8 ``1H:JQ%`J:CQ`$`1H%C %`:C VV :`H. :GCVQ` QJ VJ 7QC%IV)%IGV` ]`1C5 -9$#/ ,1 1$: 1QJV``VH Q`R`7]VCC1J':.VC1:J`:1J`VR:$`1H%C %`V7 :V %R7 Q`%]]CVIVJ :C1``1$: 1QJ1J%`@1J:*:Q 101VJ9.:1I+Q Q5.:II::HQ%G:5+1:C%1:J$5:G:.$:.I:`:JR #%CQ$V4Q1$GQQ%8 0:C%: 1QJQ`I:1<V71VCR1J`CQQR`VHV1QJ`:`I1J$1J .V@:0:J$Q VC :5 Q 1:J: 4VQ .V].1CV4:.V5::`:G1CV(Q$QGV5.VGVV 1CV(Q`Q@V:JR(1@V (%``:7R.%RQJ .J V$`: 1QJH`Q]RC10V [email protected] V``1H1VJ 1J%]]`V1J$ `Q%GCVQIV1VVR- H:V %R7 *V`I:J19QJHVJMQ5QRQC].Q&`V1`V(:`_%V5/:G`1J:C0V/:J Q5 -$Q`1J1H1%:C.:`19Q``V1:5:$$JV`*QIV0:C.:`1J15(:61VCC/:J QC0V5 .:1/ `:R1Q Q(VCQ5$:`7:,:`GQ::01V`:JR$:`1::$:`:$1J.:`V 1Q 1I%C:J 5I:H`Q:JRI1H`QJ% `1VJ `V` 1C1<V`1J`C%VJHVQJ HQIIQJGV:JH`Q]1J1 S`1:R: QJ_%1 :R:5`:<1C +:J1CQ%Q$%V1`:RQJ=Q5:IQJ9Q``V1:RV:HQJHVCQ5 .VCCVJJ.:CC7 :C0VV(VJRV5C:J:RQ/:J QRV<V0VRQCH:J :`: :JRJVCIQ#CQ7/1C0V1`:1:J: .I]:H Q`R`71J$IV .QRQJ .VVVR_%:C1 7Q`Q`$.%I ^Q`$.%IG1HQCQ` ^A8_,QVJH._ (:J1.4%I:`1=:75/%.1C0:JRV759.1 `:+V010:JRV7:JR:1J V.1I: 1I: 1QJQ`.V V`Q1:JRHQIG1J1J$:G1C1 7`Q`V:`C1JV:JR71VCR H.:`:H V`1J]%I]@1J^ %H%`G1 :IQH.: : %H.868(Q1`_ %88:I1CVC01508 :J1`:J1:JR$80%$:CVJR.1 J:C71Q``1@1JH`Q]]`QR%H 1QJR%V QHC1I: VH.:J$V1J .V VJ `:C 1` :CCV7Q` .1Q]1: .1`% *V :H.V1:JR41JR1VV`:7V Vol. 10(16), pp. 1863 -1873, 16 April, 2015 DOI: 10.5897/AJAR2015.9639 Article Number: 4F9AF2C52488 African Journal of Agricultural ISSN 1991-637X Copyright ©2015 Resear ch Author(s) retain the copyright of this article htt p:// ww w.acad emicjournals .or g/AJAR Full Length Research Paper Mitigation effect of dry spells in Sahelian rainfed agriculture: Case study of supplemental irrigation in Burkina Faso Vivien Chaim Doto 1*, Hamma Yacouba 1, Dial Niang 1, Rabah Lahmar 1,2 and Euloge Kossi Agbossou 3 1International Institute for Water and Environmental Engineering (Fondation-2IE), 01 P. O. Box 594, Ouagadougou, Burkina Faso.