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| Author: | J.C. Laughlin |
Abstract:
A field experiment studied the carry-over effect of the region of production and the NP nutrition of Poppy (Papaver somniferum L) mother plants on the subsequent performance of their progeny seed.
Seeds from experiments at East Sassafras (krasnozem), West Sassafras (transitional krasnozem) and Lemana (krasnozem) were all grown together in the next season on a krasnozem at Forthside.
The mother plants had received five fertiliser treatments: Nil, 50 and 200kg N/ha, 50 and 200kg P/ha.
The experiment at Forthside received a basal dressing of 300kg/ha of 6:14:14 NPK predrilled below the seed.
Seed from West Sassafras gave 21.3% greater yield of terminal capsules than seed from Lemana.
The nitrogen nutrition of mother plants had a carry-over effect and the yield of total seed from progeny plants receiving 200kg N/ha was 10.4% greater than the 50kg N/ha treatment.
The phosphorus nutrition of mother plants had no carry-over effect.
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