Copyright is owned by the Author of the thesis. Permission is given for a copy to be downloaded by an individual for the purpose of research and private study only. The thesis may not be reproduced elsewhere without the permission of the Author.
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. .
uENETI� CHANG�S IN A
NF.VI ZRALAND
PEDI G aE . J.,rt.:ll';Y riliRD.
by
S. T . ECKA.
Being a t hesis pre s e n ted in partiol fulfilment of t he
I 0 H 0 � \
requirements for the degree of �. Agri. Se.
!!I, t<.i .
t
Ma.s s e y Agricultural College, University of New �e al and.
November,
1952.
MRSSEY UNIVERSITY
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TABLF OF CO.NT"'NT.S.
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INT iODUCTIOl\ i
sou:qc-p OF DATA I
THE FXT"RNT AND CAUST' 3 OP w:m It.."f �OV'""FENT 4 I GBN�TIC CHANGES Dl.TE 1'0 ])AJI 31<:L:S8TION 20
II Gh'W TIC CHA�:GF:S DU"' TO .SI"l.� S�L!:CTION 32
SUM1.ARY 42
43
API'ENDIX I . 4 4
BIBLIOGRAPHY • • 4 9