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Effect of Placement on the Absorption of Rb86 and P32 from Soil by Corn Roots
Author(s) -
Vasey E. H.,
Barber Stanley A.
Publication year - 1963
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1963.03615995002700020030x
Subject(s) - zea mays , diffusion , absorption (acoustics) , agronomy , chemistry , fertilizer , plant roots , zoology , botany , biology , materials science , physics , composite material , thermodynamics
Placement of Rb 86 and P 32 in the soil affected their relative uptake by corn roots. Autoradiographic techniques were used to determine the uptake processes involved. Banding of the fertilizer rather than mixing with the soil affected Rb 86 uptake more than P 32 uptake. The diffusion rate for Rb 86 in the soil was much larger than for P 32 . Also, Rb 86 was translocated more extensively throughout the corn root than was P 32 . The greater uptake of Rb 86 from band applications appeared to be due to both a greater facility for uptake by a small portion of the root and a greater diffusion of Rb 86 out of the band.