Advances in food-producing systems for arid and semi-arid by Symposium on Advances in Food-Producing Systems for Arid and

By Symposium on Advances in Food-Producing Systems for Arid and Semiarid, Jamal T. Manassah, Ernest J. Briskey

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Can cro p such heavy in fa v o ra b le w ith t e c h n o lo g ie s o f w ith in c re a se d e n v iro n m e n ts. e n v iro n m e n ta l o f fo r m ust in flu e n c e be w a te r e ffe c t iv e done fo o d to c o n d itio n s. u se o f p r o d u c tio n e v a lu a te w ate r the C ro p p in g s u p p lie s m ust e v a lu a te d . the b u ild p e st o b ta in e d a re as o rg a n iz e d p o s s ib ilit ie s c u ltu r a l c o m b in a tio n in and w e ll e x ce sse s p o t e n t ia l d e v e lo p e d and in p o t e n t ia l c o n d itio n s, o th e r g e n e tic be e m p h a sis g re a t im p ro v e d s o il D e fic ie n c ie s m ore w a te r, can n ot th o r o u g h ly w ith s t i l l in c re a se d s o il, in c re a se s re se a rc h is p r a c t ic e s V a lle y are R ic e grow n d u rin g th e sh ow s g re a t in cro p w h ic h la n d p o t e n t ia l som e c ro p p in g a re as r o ta tio n p e rm its is tim e m ust and in c u ltu re y ie ld in g b ecau se and b e in g th e be m ay d ra in e d , s im ila r Ir a q r ic e th a t produce (E lg a b a ly in le a c h in g grow n.

Fo r C o m p a ra tiv e se v e r a l r ic e In P r ic e (A ve rage h ig h in TABLE 13 D a ta fo r to and and the p ric e Japan and T a iw a n , en courage th e farm e r In th e T h a ila n d on th e in c e n ­ the to o th e r han d, f e r t iliz e r . F e r t iliz e r 1 9 6 9 /7 0 Japan Republic o f Korea Taiwan Malaysia Ceylon Indonesia Thailand Philippines Burma c o u n trie s ro le 1 3 ). T. 70 Source: Various sources summarized by Burki and Goering 1977. 5 8 b u t to th e b ir t h l. l8 # , in c o u n trie s ra te w ith w as la r g e ly due d e c lin e s and w e lc o m e tre n d s, in o f one.

C. BRADY 18 th e d e v e lo p e d th an th e a re as w here ado p te d c o u n trie s' p ro b le m s. t r a d it io n a l th e y the h o ld in g s new v a r ie t ie s w ere a p p lic a b le v a r ie t ie s (T a b le T h ese (T a b le about 8) new c e re a l and w ere (D a lr y m p le as r a p id ly v a r ie t ie s q u ic k ly 1 9 7 8 ). as d id gave ado p te d F u rth erm ore, t h e ir h ig h e r by the n e ig h b o rs y ie ld s farm e rs s m a ll w ith in farm e rs la r g e r 9 )· TABLE A ve rage R a tio o f o f T r a d itio n a l in Each, o f M odern V a r ie t ie s S e v e ra l A sia n 8 V a r ie t ie s 1 Y ie ld s as M easured C o u n trie s a t Com pared S e v e ra l (C a lc u la te d to T h ose L o c a tio n s fro m H erd t 1980) Yield ratio modern to traditional varieties Country Number of Average ratio locations India Indonesia Philippines Others 10 10 10 8 TABLE P e rce n t W he ats o f in 1 9 6 9 -7 0 W heat A cre age C e rta in (F ro m Size of holding (acres) Many ra te .

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