The Lucknow Sentinel, 1991-03-06, Page 78Eagh year. 11 millionhtafe.,of
forests are destroyed, ` area as.
large as New ItninswickAnd Nova
P combined.
_ � of these
j
le
n'+3 bs-teNtr .r '.ti id.','•,71k" ::;F+4.iid . 4 R;1 ,
atiltatty se ious int} .deV010Pag
countries.
Par of the;prroblem is the choos,.
• ins of food crops or livestock over
s; but tis, crops and livestock
canthrive together. naditional
fanning systems probably always
. _included q
Meat ns
w indbreaks,itadasa. $QUIVO of food
and fuelo. Reviving and improving.
the old MOWS and developing
new ones is the ,goal of work
• c
o-
,
ordtedby the International
dilfor Research in �grbfore -
y
, bsedin Kenya, Canada's.
International DevelopmentRe h
Centre R
C helped
establish
decade ago�
,.
Typical of the work underway are
experiments carried out by
the
International.Instote of Tropical
Acme in: geh that have
show that n nitlppurpo , _fast.
growing ,, ocana �and-
yam .rows trees, vanplanted' ' u* rows ' do
-:
3 i
ro a
,.954
�1
gt 4 f pping f '".
system is known is that Rthe trees
are merged like a Mro - .may are
pruned edd, often .: so the don't
overshadowth' ts. The cottin
are spr d oii theground' -mulch.
When they' :, decompose , they!
conitrihute tu. en all4PhoVilgrflitktrie'<so
The system iS flexible; 'the
.farmers need firewood- or poiosx
they let the tree grow ted, if
forage for sheep goats_ is .More
important, they prune .themmore .
frequently. The famih
er� do sire
work a little harder, but they ca
have . it all; wood, ": 'food. crops,.
forage. And they can, do it without
degrading the lana Alley dropping
is now .� - � n - -
he 'introduced,in
countries as far afield as Kenya and
the Philippitnes
from soil..Dt. Donald Bac of
the wat0SystiC.
14444111 the Winnipe
teairi and contlihothiE: hi
penis' e. on virus -transmitting
soil. fungi The results of his
work suggest that flame
chlorosis is spread by .a soil
Amps that is y
widespread:in Prairie soils.
w :`h sliown that the
disease is definitelir
transmitted 'throngb,t d� u -
observation ►t come ass -some
relief to seed growers. ]
be 's whas also Shown
t e. liken eat that
camas the disease. is Mite`
unlike any otherown.
disease -causing eat of plants,
king sichOn
While escindsts continue
Pple with .chlorosis ;
to deterfitie how best
4it can be n fled, Practi
luiaons
be" g,sought
littlit the extent of losses. Vfru
lise ofplants cann
- cured; they`. can only ,in
cortin llud by excludingot be or
avoid the virus be It
infects the plant, or by a use
of plant varieties st_nt �.
vis qtr to . ler t to')ts
SPreet I
n the re IOUS why soil --
transmitted
l --t rsmit ehlo+ is
. �r � � ola~�trai�.ons`
,su est th a rg of
ce>Ea •;p o tion into !�h'
erg'' may re�G blit
eliminate, flaiuuo ehk* s s aur a
subsequentcer l crop
-• ro of Poo ir! •for*n
aW b �ot c
•dtse�.,�1 �:Y. e.
t �.
but rt has- its ±c 'b
as+ ala rflaxmaynotalp
!a s a=fear le fl tram foir _9tl
every fanner facing t :.
of losses I t flame,chlorosis
as y y reclaim speak
inputs or, in' turn, be l ighly.
tO
vulne le: to other < lath•
di s*Diseaser stain
esr r�
�' ,
..us a `st "`
u�lly rh •ntQ de�>b
control option,. but, it take;
.Y
yei�f
resist e. to Mme °crilor isis
4• M
and. tri i ncorrpoirate them into
c µv.., 4i ThiSis ..
specially true m n c+ompretely
anew disease like osteo
ehloxosiawhere there has,, not
line ford sources of e.
telco to evolve by naturr�al ►r
tal*R ctftti
of 1t ttufi s we can
ortosis
P.
to detecf the
early and moititor its omit -
001,4
mit-001, (NI
,fawe chlorosislie not
easily confused to the knowing
eye, E yeii!1fii<�t
w hi st leave'uf
affected plants may ap
t x c h o1 bet
-
test
e. A r
lixoxd
test can devantn accurately
a: thepe of the kritui-e
aof game ,
agent, , chlorosis and _
give :a *sellable, osi
yqt6gose version off" the cor-
m lah test is being developed
:so .dot nc. pmt ase
s wiXl be abl; tO diagnose
Mori sfs mutinely, '
Wita
diseaseAliSease of cerealS
utterlynov sand- ntiall.
Y
*votive as'name- chi+ sis,
a.
tests frOm basic research
essential ta meet tie
�llne, acceding to l
li►esearch, disease_ monitoring,
•.Creased :awareness- and co-
Mian oo,:pronci and
f scientists may -help .ups
educe -the chance tit the
particular: flame soon.
spread out`bf Poatrol.
(reprinted from Emergency
""r~°ice+ uhf
yw mcrgency . `
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