000			01616nab a22003737a 4500
001			G32952
003			MX-TxCIM
008			121211b |||p||p||||||| |z||| |
040			_aMX-TxCIM
041	0		_aEn
043			_aAU
072		0	_aE10
072		0	_aF01
090			_aREP-3066
100	1		_aO'Brien, L.
245	0	0	_aVictorian wheat yield trends, 1898-1977
260			_c1982
340			_aPrinted
520			_aThe history of wheat breeding in Victoria is described in terms of a study of yield trends between 1898 and 1977. The major trend was a decline in yield upto 1900 followed by a gradual increase to the present time. The halt of the yield decline in 1900 coincided with the introduction of fallowing and the use of superphosphate. The relative performances of a range of cv. were expressed asa percentage of the yield of cv. Olympic; the recently released cv. Egret and Condor were most productive, yielding 108% of Olympic. It was concluded that 33%of the overall improvement in yield observed since 1898 could be attributed to the introduction of new cv.
546			_aEnglish
595			_aRPC
650	1	0	_aCrop losses _91060
650	1	7	_aDisease resistance _gAGROVOC _2 _91077
650	1	7	_aEconomics _gAGROVOC _2 _91093
650	1	7	_aVarieties _gAGROVOC _2 _91303
650	1	0	_aVictoria
650	1	0	_aYield components _91312
650	1	0	_aYield factors
650	1	0	_aYield forecasting
650	1	7	_aWheat _gAGROVOC _2 _91310
650	1	0	_91313 _aYields _gAGROVOC
773	0		_tJournal of the Australian Institute of Agricultural Science _n623450 _gv. 48, no. 3, p. 163-168
942			_cJA
999			_c12159 _d12159