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Effects during Period of Siliqua Developing of KH 2 PO 4 and MgSO 4 Application on Nitrogen Transportation in Pods of Oilseed Rape( Brassica napus L.)
Author(s) -
Kullmann A.,
Zhang Q. Z.,
Geisler G.
Publication year - 1991
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1991.tb00960.x
Subject(s) - brassica , nitrogen , urea , horticulture , point of delivery , significant difference , agronomy , biology , botany , chemistry , mathematics , biochemistry , statistics , organic chemistry
An experiment was conducted in field experiment plot to investigate nitrogen transportation from hulls of pods in different periods at early stage of siliqua developing and effect of KH 2 PO 4 and MgSO 4 application on it using 15 N‐urea. More than 80 % of 15 N applied on the surface of pods at lower terminal during flowering was recovered from all pods one month after flowering, most of them were still in the hulls of labelled pods, 17‐27 % of l5 N applied was transported into seeds, a small amount was transported to pods at upper terminal, a little amount was found in pods at branch. More l5 N applied in middle period of flowering was transported to pods at upper terminal and branch than those applied in early period of flowering. It should be further investigated to conclude how will be going on transportation of nitrogen from hulls as preceding of siliqua developing towards maturity of seeds and its difference between 15 N applied in more different periods. Application of KH 2 PO 4 and MgSO 4 with 15 N‐urea of surface of pods promoted transportation of 15 N into seeds from hulls, effect of MgSO 4 was more notable.