Effect of Tilemsi phosphate rock-solubilizing microorganisms on phosphorus uptake and yield of field-grown wheat (Triticum aestivum L.) in Mali

This manuscript focuses on the nutrient recycling potential of enriched compost prepared using rice straw, low-grade rock phosphate (RP) and waste mica along with Aspergillus awamori and their effect on crop productivity and changes in soil fertility under potato-soybean cropping sequence in an Inceptisol of Indo-Gangetic Plains of India. Enriched composts had higher total as well as bioavailable P and K content than ordinary compost. Data emanated from the field study revealed that yield and uptake of N, P and K by potato tubers were significantly increased due to application of inorganic fertilizer and enriched compost over control. Application of 50% recommended dose of NPK fertilizers (RDF) along with 4.0 Mg ha -1 of enriched compost product-C prepared by rice straw ? RP @ 4% P ? waste mica 4% K ? Aspergillus awamori resulted in 43.3% additional yield and 102.3, 67.0 and 62.2% additional N, P and K uptake by potato over control, respectively. Significant increase in yield and uptake of N, P and K by soybean grown on residual fertility were also observed over control. Post-harvest soil analysis indicated a significant build-up in soil organic C, available N, P and K due to application of enriched compost in combination with inorganic fertilizer over 100% RDF. The results clearly showed that enriched compost could be an alternative and cost effective option to prepare a value added product using agricultural wastes and low-grade minerals like RP and waste mica in place of costly chemical fertilizer for crop production and maintaining soil fertility.

Section: Nutrient Uptake By Potato and Soybeanmentioning

confidence: 98%

Nutrient recycling potential of rock phosphate and waste mica enriched compost on crop productivity and changes in soil fertility under potato–soybean cropping sequence in an Inceptisol of Indo-Gangetic Plains of India

Biswas

2010

“…compacted Jamakotra PR (India) with MAP byNair et al (2003);Begum et al (2004),(7)Timemsi PR (Mali) byBabana and Antoun (2005),Babana and Antoun (2006),Somado et al (2006) (8) Ben Guerir PR (Morocco) byRivaie et al (2008), (9) Ogun PR (Nigeria) byAkintokun et al (2003),(10)Sokoto PR (Nigeria) by Agbenin (2004); Sokoto and Singh (2008), (11) North Carolina PAPR by McLay et al (2000), (12) North Carolina PR by Rajan (2002), (13) Phalanowa PR (South Africa) by Loganathan et al (2004), (14) Eppawala PR (Sri Lanka) by Zoysa et al (1999), (15) Minjingu PR (Tanzania) by Mutuo et al (1999), (16) Hahotoe PR (Togo) and PAPR by Agyin-Birikorang et al (2007), (17) Gafsa PR (Tunisia) and Arad (Israel) by Gatiboni et al (2003); Mendoza et al (2009), and (18) Riecito PR (Venezuela) by…”

mentioning

confidence: 99%

Agronomic and environmental aspects of phosphate fertilizers varying in source and solubility: an update review

Chien

Prochnow

Tu³

et al. 2010

231

155

This review discusses and summarizes the latest reports regarding the agronomic utilization and potential environmental effects of different types of phosphate (P) fertilizers that vary in solubility. The agronomic effectiveness of P fertilizer can be influenced by the following factors: (1) water and citrate solubility; (2) chemical composition of solid watersoluble P (WSP) fertilizers; (3) fluid and solid forms of WSP fertilizers; and (4) chemical reactions of P fertilizers in soils. Non-conventional P fertilizers are compared with WSP fertilizers in terms of P use efficiency in crop production. Non-conventional P fertilizers include directly applied phosphate rock (PR), partially acidulated PR (PAPR), and compacted mixtures of PR and WSP. The potential impacts of the use of P fertilizers from both conventional (fully acidulated) and non-conventional sources are discussed in terms of (1) contamination of soils and plants with toxic heavy metals, such as cadmium (Cd), and (2) the contribution of P runoff to eutrophication. Best practices of integrated nutrient management should be implemented when applying P fertilizers to different cropping systems. The ideal management system will use appropriate sources, application rates, timing, and placement in consideration of soil properties. The goal of P fertilizer use should be to optimize crop production without causing environmental problems.

“…Bacteria BR2 confirmed its mycorrhizal helper trait and inoculation of wheat with G. intraradices significantly increased wheat grain yield and P content. The highest grain yield and P content was obtained with TPR fertilized wheat inoculated with BR2, C1 and G. intraradices (Babana and Antoun 2005). More field inoculation trials should be performed in many different regions in Mali and other parts of Africa, and with other wheat cultivars, before a commercial inoculant formulation based on these beneficial TSM can be developed.…”

Section: Discussionmentioning

confidence: 97%

“…Many soil microorganisms, including bacteria and fungi, are able to mobilize sparingly soluble inorganic and organic phosphates, and they have an enormous potential in providing soil phosphates for plant growth (Richardson 2001;Gyaneshwar et al 2002). We have recently shown that by inoculating wheat seeds with TPR-solubilizing microorganisms (TSM) in combination with a commercial isolate of the arbuscular mycorrhizal (AM) fungus Glomus intraradices, under field conditions in Mali it is possible to obtain wheat grain yields comparable to those produced by the expensive diammonium phosphate (DAP) fertilizer (Babana and Antoun 2005). In the present work we describe how the efficient TSM were obtained from Malian soils and selected for their potential use as plant growth promoting microorganisms for wheat cultivated in Mali.…”

Section: Introductionmentioning

confidence: 97%

Biological System for Improving the Availability of Tilemsi Phosphate Rock for Wheat (Triticum aestivum L.) Cultivated in Mali

Babana

Antoun

2005

Self Cite

The Tilemsi phosphate rock (TPR) of Mali is a good and cheaper alternative to imported phosphate fertilizers. Many soil microorganisms can also mobilize sparingly soluble inorganic phosphates, and several have a good potential to improve plant growth. With the aim of improving the response of wheat cultivated in Mali to fertilization with TPR, in this work we describe the isolation and selection from four different Malian soils of TPR-solubilizing microorganisms (TSM) with high P-mobilization activities. When the rhizosphere of three wheat cultivars (Alkama Beri, Hindi Tossom and Tetra) was used to isolate TSM, only bacterial isolates were selected. TPR-solubilizing fungi were only obtained by soil enrichment in liquid medium containing TPR as sole P source. In the rhizosphere a significant correlation was observed between the total microbial population and the number of microorganisms solubilizing TPR. No such correlation was observed in the rhizoplane. Initially 44 bacteria and 18 fungi were selected, but after 10 subcultures on agar plates and a liquid medium, only 6 bacteria and 2 fungi retained their high P solubilizing trait. A field inoculation trial was established during the growing season 2000-2001 in Koygour. Wheat cv. Tetra was inoculated with the 8 selected TSM (6 bacteria and 2 fungi) and fertilized with 30 kg ha À1 P added as TPR or diammonium phosphate (DAP). The growth parameters measured were plant height at 30 and 60 days, the number of leaves per main stem at 60 days, and root and shoot dry matter yields 60 days after planting. Root colonization by indigenous arbuscular mycorrhizas (AM) was also measured in 45-day-old plants. Significant interactions were observed between TSM inoculation and P-fertilization for root colonization with AM, plant height at 30 days and root dry matter yield. The bacterial isolate Pseudomonas sp. BR2, which appeared to be a mycorrhiza helper bacterium, significantly enhanced wheat seedling emergence very early (5 days after planting) under field condition, and caused 128% increase in root dry matter yield. The two TPR-solubilizing fungal isolates Aspergillus awamori Nakazawa C1 and Penicillium chrysogenum Thom C13 also caused respectively 60 and 44% increases in root dry matter yields. The choice of the TSM BR2, C1 and C13 for further field trials is discussed.