50
PDNinJ iW SRVViEOH WR idHnWiI\ WKH ÀYH diIIHUHnW VWDJHV RI
IUXiW IRUPDWiRn ZKiFK DUH WKH iniWiDO IRUPDWiRn RI IUXiWOHWV
UDSid H[SDnViRn VXVSHndHd JURZWK Dnd JUDininJ RU JUDin
ÀOOinJ DOO RI ZKiFK DUH UHODWHd WR WKiV JURZWK PRdHO.
7KH KiJKHVW DFFXPXODWiRn UDWHV ZHUH IRXnd in WKH VWDJHV
RI UDSid H[SDnViRn VXVSHndHd JURZWK Dnd JUDin ÀOOinJ.
RHFHnW VXUYH\V KDYH VKRZn ViPiODU UHVXOWV UHODWinJ WR
nXWUiHnW DFFXPXODWiRn in WKH FXOWiYDWiRn RI ERWK SRWDWR
FRWWRn ÀndinJ ZKiFK JR D ORnJ ZD\ in UHinIRUFinJ WKH
SUDFWiFDO UHOHYDnFH RI WKiV inIRUPDWiRn IRU D YDUiHW\ RI FURSV
DV iW VKRZV WKDW WKH inIRUPDWiRn JDWKHUHd FDn EH diUHFWO\
DVVRFiDWHd ZiWK SODnW nXWUiHnW UHTXiUHPHnWV Dnd ZiWK iW WKH
FRnVHTXHnW nHHd IRU VSOiW DSSOiFDWiRn RI IHUWiOi]HU.
$OWKRXJK WKH JHnRW\SHV SUHVHnWHd ViPiODU EHKDYiRU IRU
DFFXPXODWiRn UDWHV WKH dXUDWiRn RI HDFK VWDJH ZHUH VHHn
WR diIIHU UHVXOWinJ in D 216 dD\ JURZinJ F\FOH IRU WKH HDUO\
JHnRW\SH D 2 dD\ F\FOH IRU WKH inWHUPHdiDWH Dnd ODWH
JHnRW\SHV Dnd D 300 dD\ F\FOH IRU WKH YHU\ ODWH JHnRW\SH.
'XUinJ WKH UHVHDUFK iW ZDV REVHUYHd nRWHZRUWK\ WKDW
DOWKRXJK WKH inWHUPHdiDWH JHnRW\SH SUHVHnWHd F\FOH
dXUDWiRn ViPiODU WR WKH ODWH JHnRW\SH WKH ODWWHU ZDV
KDUYHVWHd ODWHU DV D UHVXOW RI WKH FRIIHH SODnW·V SUiPDU\
ÁRZHUinJ WDNinJ SODFH WKiUW\ dD\V DIWHU WKH IRUPHU.
NiWURJHn DFFXPXODWiRn in WKH IUXiWV RI WKH HDUO\ Dnd
inWHUPHdiDWH JHnRW\SHV IROORZHd D WUHnd ViPiODU WR dU\
PDWWHU DFFXPXODWiRn ZiWK ViJPRidDO EHKDYiRU. ,n FRnWUDVW
WKH ODWH Dnd YHU\ ODWH JHnRW\SHV ZHUH REVHUYHd WR nRW
IROORZ WKH VDPH SDWWHUn RI dU\ PDWWHU DFFXPXODWiRn Dnd
VKRZHd H[SRnHnWiDO FXUYHV (See Figure Two).
'XUinJ WKH WHVWV iW ZDV REVHUYHd WKDW WKH EHKDYiRUV
RI WKH ODWH Dnd YHU\ ODWH JHnRW\SHV VXJJHVW WKDW WKHUH
DUH diIIHUHnFHV ZiWKin WKH VDPH VSHFiHV WKDW VKRXOd EH
FRnVidHUHd in WKH nXWUiWiRnDO PDnDJHPHnW RI SODnWV RI
WKHVH FURSV inYiWinJ D VXJJHVWiRn WKDW VSOiW DSSOiFDWiRn RI
IHUWiOi]HU VKRXOd EH diIIHUHnW dHSHndinJ Rn WKH JHnRW\SH.
,n DFFRUdDnFH ZiWK WKH &D DFFXPXODWiRn FXUYHV 70 RI
WKH &D in WKH IUXiWV RI WKH HDUO\ inWHUPHdiDWH ODWH Dnd YHU\
ODWH JHnRW\SHV ZDV DFFXPXODWHd XS WR 160 170 1 0 Dnd
230 dD\V DIWHU DnWKHViV.
$FFXPXODWiRn in WKH ÀUVW WKUHH JHnRW\SHV ZDV REVHUYHd
WR EH ViPiODU WR WKDW UHSRUWHd IRU &. $UDEiFD &DWXUUD in
ZKiFK 70 ZDV DFFXPXODWHd E\ 120 dD\V (genotype with
a maturation cycle of 240 days).
,n DddiWiRn WKH EHKDYiRU RI WKH YHU\-ODWH JHnRW\SH VKRZV
diIIHUHnFHV in WKH dXUDWiRn RI WKH VWDJHV RI IUXiW dHYHORSPHnW
VinFH WKH KiJKHVW UDWHV RI DFFXPXODWiRn RI &D DUH UHODWHd
WR FHOO ZDOO IRUPDWiRn Dnd VWDEiOi]DWiRn RI PHPEUDnHV Dnd
RFFXU in VWDJHV RI UDSid H[WHnViRn Dnd VXVSHndHd JURZWK.
&D iV WKH VHFRnd nXWUiHnW WKDW iV PRVW DFFXPXODWHd E\
¶&RniORn· FRIIHH WUHHV Dnd OiNH MJ iW iV XVXDOO\ SURYidHd
E\ OiPinJ. RHVHDUFK VXJJHVWV WKDW WKH IROiDU DSSOiFDWiRn RI
FDOFiXP-EDVHd IHUWiOi]HUV DW WKH WiPH RI KiJKHU UHTXiUHPHnW
WR VXSSO\ WKiV KiJK dHPDnd.
Conclusions
GHnRW\SHV 129 109 Dnd 139 KDYH ViPiODU FXUYHV RI
DFFXPXODWiRn RI dU\ PDWWHU N P . &$ MJ Dnd 6 ZKiOH
JHnRW\SH ,SiUDnJD 501 diIIHUV IURP DOO WKUHH GHnRW\SHV
ZiWK D VKRUWHU IUXiW UiSHninJ F\FOH KDYH D KiJKHU UDWH RI
DFFXPXODWiRn RI dU\ PDWWHU Dnd nXWUiHnWV.
)HUWiOi]DWiRnPDnDJHPHnW RI diIIHUHnW &. &DnHSKRUD&RniORn
SODnWV FRIIHH JHnRW\SHV VKRXOd diIIHU in DFFRUdDnFH ZiWK
WKH OHnJWK RI WKH F\FOH VR DV WR VXSSO\ SODnWV DW WiPHV RI
KiJKHU nXWUiHnW nHHd. ■
Figure Two: Accumulation of nitrogen in fruits (in percentage of the cumulative total)
of four genotypes (clones) of Conilon coffee, from anthesis to fruit maturation