IMPACT OF PIIIMING PATTENNS AND NUTRIENT MANAGf,,MENT ...

2.2.r.4 r hdlt
Nnrcgo is lhc no51 iftpotunr rutricnt irf@ming thc i.itinioi! dcstoondn .6d
hdrtc|r|k of till6 in $g,Jte. U$dty with iida$d nirrcgd ..rq rhd! is
d irc..& ir rillsirg up ro r timir b.ydtd etriclt rlE Gpore is ,!ot ig fied
(Vmt4 1954). A! Fo&i. tt|lndir ij dE hi8tElr drinS &. tildiig phrr.,
dLogs +pliotion hdp, in ir. Ntrogo c@rd in te.frie.s t ! b.€d rd.r.d !o
th. nurtd of rilqs produced (Si!gh., t9?O !d 6. oop idd
(L.tshniksrh.n er 4r., 1960). Oprimun cotreft.lrion of N (2%) h tqf{is&
ror hielq dned.g could b. Drjftin d b, ,ptir ,pdicadon of N HoP€w,
Sriva{.v! &d KU@ 0984) r.pon d rtd sptir .ppt lrron or N in ra5.d
Mbq of il@te c$6 at h^rd @bp..Gd to dlSle Aptcaio! of I5O fg N
h! '. Splir rpplicrron ofN .to inqa!.d ilDt cp..by orphid! b( dlki!,8 ritl!
a @ncohibt dde!& i. iill6 norrrliry. In tlE rbsa|cc of phospnoru! ad
potrsrium {nglr ritt- prodqdion i3 c$y .nd fr5ta in intud sr.ga but riU.B ec
weak. soft ofrhc 'ni.ronurri.nts li*c copFr, boro4 nanganes. aid m haw
D4' ookrrd ro impres iniri.l ritkring.
,.y.!61 aDd sot|fu (l9t) .@ncd {Dr UgtE dc of dros6 (225 l(8 b..
6np&cd ro t?t &g N h. ) nrcrcd dlailg hr' .t$ d6 noi.tiy llsascd
nonality i! afribut€d 1o fi. codrplririon ton rb. g..nd nunbd of titsN
(Sitg\ t 974. Appti@dor orphosph.& on soik defcidr i, ,l!s nutidr ircre!.d
.illaing in tugrce, @i[dij,r 1952). Ctcodri (t96a) rrs ob@.d !n,tr
phoryl@! d.6ciaq i. 'ssi|ted rh t&t of riu6i.g. Zirc.rrti..don alxo
@re.s€d grc*rl !d dttdir8 ir egro|. Sli!!n.r ., at (19s6) raodcd rhal
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