Salam, A.K. and Sriyani, N. and Dewi, S.K. and Santoso, F. Weed-Root Induced Release of Potassium in Tropical Soils. AGRIVITA, Journal of Agricultural Science. ISSN 2302-6766 (Printed-English) (Submitted)

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Abstract

Plant nutrient release from soil minerals is reported to be speeded at lower soil pH, which is also governed by the acidifying effect of vegetation roots. This research was to investigate the effects of several tropical weeds on the exchangeable K in two tropical soils with distinct properties. Five potential weeds including Asystacia gangetica, Arachis pintoi, Widelia sp., Paspalum conjugatum, and Pennisetum purpureum were grown in the soil samples contained in polybags. The soil exchangeable K was depleted by weeds except that in soils planted with A. pintoi as indicated by the positive values of  Exch. K [ Exch. K = Final Exch. K (After Planting) – Initial Exch. K (Before Planting)], suggesting that A. Pintoi root was more effective than the other weed roots in stimulating the release of soil mineral K. The effectiveness of weed plants in stimulating the release of soil K were: A. Pintoi > A. gangetica > Widelia sp. > P. conjugatum > P. purpureum.

Item Type:	Article
Uncontrolled Keywords:	Arachis pintoi, Root Acidifying-Effects, Tropical Weeds
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User:	Abdul Kadir Salam
Date Deposited:	16 Nov 2017 04:18
Last Modified:	16 Nov 2017 04:18
URI:	http://repository.lppm.unila.ac.id/id/eprint/5263

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