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Effects of earthworms, arbuscular mycorrhizae, and phosphate rock on setaria grass (Setaria splendida) and phosphorus availability in soil


Citation

Djunita, Tengku Sabrina and Musa, Mohamed Hanafi and Gandahi, Allah Wadhayo and Tengku Muda Mohamed, Mahmud and Abd Aziz, Nor Azwady (2013) Effects of earthworms, arbuscular mycorrhizae, and phosphate rock on setaria grass (Setaria splendida) and phosphorus availability in soil. Australian Journal of Crop Science, 7 (13). pp. 2136-2144. ISSN 1835-2693; ESSN: 1835-2707

Abstract / Synopsis

Phosphate rock (PR) is essentially insoluble in water. Dissolution of PR under acidic soil conditions is a necessary pre-requisite for uptake of phosphorus (P) by plant. Improvement in P dissolution could be achieved through the interaction of micro- and macro-organisms in soil. A greenhouse pot experiment was conducted with epigeic earthworms (W) (Pontoscolex corethrurus M.), arbuscular mycorrhizae (AM) fungi (Glomus mosseae Tul), and gafsa phosphate rock (GPR) to evaluate their effects on dry matter (DM), root colonization, and nutrient accumulation of setaria grass (Setaria splendida) and availability of P in the soil. Earthworms significantly increased DM yield (23.3 g pot-1) and P accumulation (16 mg P pot-1) of setaria grass. The AM colonization on inoculated plants was high (81%) compared to earthworms. Accumulation of P, N, K, Ca2+ and Mg2+ in grass were significantly higher in soils contained earthworms, compared to other treatments. Presence of worm (W), AM, and GPR significantly increased phosphorus utilization efficiency (PUE) of setaria grass. The residual P was lower in the soils treated with worm or AM compared to non-treated (control) soil which might be due to higher P uptake by setaria grass. However, plant's available P increased under AM or W treatment. There was a significant interaction effect between AM, W and GPR on P accumulation of setaria grass indicating, efficiency of grass in taking up phosphorous. Thus, it could be concluded that presence of W, AM and GPR have efficiency to increase the amount of plant available P in soil.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Institute of Tropical Agriculture
Faculty of Science
Publisher: Southern Cross Publishing
Keywords: Arbuscular mycorrhizae; Earthworms; Phosphate rock; Phosphorus availability; Setaria splendida
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 21 Jun 2016 11:36
Last Modified: 21 Jun 2016 11:36
URI: http://psasir.upm.edu.my/id/eprint/29268
Statistic Details: View Download Statistic

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