Abstract. Local rhizosphere acidification by rape as a reaction to P-starvation was visualized by means of an agar plate technique. By means of a modification of this technique local differences in cation-anion uptake and organic acid exudation along intact roots of rape were observed for plants grown on nutrient solution with or without added ...

Rock phosphate (RP) is an important natural material traditionally used for the production of phosphorus (P) fertilizers. Compared with chemical treatment, microbial solubilization of RP is an ...

Abstract: Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in …

Rock Phosphate: an organic source of phosphorus. Rock phosphate is found in all continents of the world (figure 1). It is used as a raw material in the manufacture of inorganic phosphorus fertilizers and can be used as organic phosphorus fertilizers when applied directly to the soil. ... References: 1. Hu et al (1996) The effect of direct ...

Rock phosphate fertilizer is a type of organic fertilizer that is derived from natural deposits of phosphorus-rich minerals. Phosphorus is one of the three primary macronutrients that plants need in large quantities, along with nitrogen and potassium. It plays a crucial role in photosynthesis, energy transfer, and cell division.

The result showed that the application of manure, rock phosphate, and zeolite significantly increased the soil pH and CEC in the soils as well as increased nutrient uptake, 100 seed weight and soybean yield. The 5 t/ha manure, 5 t/ha rock phosphate, and 5 t/ha zeolite (P8) gave the highest the soil pH, CEC, nutrient uptake (N, P, K), 100 …

A high correlation was observed between final pH and soluble phosphate only for the rock phosphates inoculated with the highest concentration of solubilizing bacteria (r=−0.73 to −0.98). Forty two soil isolates (31 bacteria and 11 fungi) were studied for their ability to solubilize rock phosphate and calcium phosphate in culture medium. …

This article discusses the geology of the phosphate deposits identified so far, gives a brief description of the production process of partially acidulated phosphate rock (PAPR), and the agronomic results obtained from field trials on finger millet and maize in the high-rainfall area of Zambia. The results from the development work on PAPR show ...

Rock phosphate showed longer residual P than TSP at the larger amounts of applied P In a first season crop, 10-25% of P was utilised. Rock phosphate supplied steady P to the crop in subsequent years. ...

DOI: 10.1016/J.BIORTECH.2006.10.015 Corpus ID: 39159386; Improving rock phosphate availability through feeding, mixing and processing with composting manure. @article{Odongo2007ImprovingRP, title={Improving rock phosphate availability through feeding, mixing and processing with composting manure.}, author={Nicholas …

Phosphate Rock; Apatite FAQ; References; Chemical composition of apatite. Apatite is a mineral with a relatively complex chemical composition, which can vary depending on the specific type of apatite. The basic formula for apatite is Ca5(PO4)3X, where X can be any one of several ions, including OH-, F-, Cl-, or a combination of …

A pot experiment was conducted in department of Soil Science and Agricultural Chemistry of College of Agriculture, Central Agricultural University, Imphal (Manipur) during kharif season of 2016, to study the effect of Single Super Phosphate (SSP) and Rock Phosphate (RP) on nutrient uptake of paddy (CAU-R1). Results revealed that phosphorus uptake …

The price of phosphate rock, which is used in the production of phosphate fertilizers, stood at 266 U.S. ... Detailed references; $199 USD / Month * Professional Account. Full access.

Better root development for trees and grass. Improving the flavor of vegetable and fruit crops. Deterring soil pests. Rock phosphate fertilizer is slow-release and an ideal way to keep soil calcium levels from getting too low during the growing season so your plants can continue to flourish. This organic fertilizer also works in tandem with ...

Citations (40) References (125) Abstract. Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the …

Phosphate mineral, any of a group of naturally occurring inorganic salts of phosphoric acid. Phosphates can be grouped as: primary phosphates that have crystallized from a liquid; secondary phosphates formed by the alteration of primary phosphates; and rock phosphates formed from phosphorous-bearing organic material.

This site is aimed at guiding decisions and providing recommendations on the use of phosphate rock (PR) as fertilizer, predict their cost-effectiveness as a source of …

Classical, soluble fertilisers create environmental and economic problems. As an alternative, we studied the direct applications of phosphate rock and potassium rock in conjunction with phosphate-solubilising bacteria and potassium-solubilising bacteria for cultivation of hot pepper Capsicum annuum L. Our findings show that integration of P …

Phosphate rock is a non-renewable resource and an important component for phosphorous-based chemicals and the production of fertilizers (Gharabaghi et al., 2010;Mohammadkhani et al., 2011). >70 wt ...

Description. The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. The largest and least expensive source of phosphorus is …

Rape and sunflower were compared with respect to their rock phosphate mobilizing capacities, cationanion balance and uptake of Ca and NO3 at P-starvation. Rape was able to mobilize P from rock phosphate, whereas sunflower was not.When grown on a complete nutrient solution with NO3 as the only nitrogen source, both species took up …

A sample of rock phosphate (NP) extracted from the Khouribga region (Morocco) was pretreated to remove soluble impurities associated with the mineral, as reported elsewhere [16]. To obtain various ...

Earlier the original source of phosphorus (P) fertilizer was bones; as time passes, the supply of P fertilizer will get exhausted. Today, rock phosphate is the only raw material in the form of P fertilizers. …

References (31) Abstract. ... (198) rock PSBs were isolated employing NBRIP medium amended with rock phosphate (RP), out of which five strains (A17, A81, B26, B106, and B107) were selected for ...

E ciency of rock phosphate with PSB M. K. Abbasi et al. Title Page Abstract Introduction Conclusions References Tables Figures J I J I Back Close Full Screen / Esc Printer-friendly Version Interactive Discussion | more ecological but nevertheless e cient P sources, such as use of indigenous rock phosphates (RPs) in our agriculture inputs system.

Roland Bol c., Yajie Sun c d., Drew S. Coleman e., Xiao-Ming Liu e., Michael R. Sandstrom e., Avner Vengosh a. Show more. Add to Mendeley. …

References (89) Abstract. A high grade quality rock phosphate is an essential requirement for manufacturing of phosphatic fertilizers. In India, 15.3 mt of indigenous deposits of high grade...

The use of reactive rock phosphate (RP) in acidic soils as a phosphate (P) source for pastures and crops presents attractive economic advantages with respect to soluble phosphate. However, some studies have demonstrated that the short-term (1-year) efficiency of RP, compared with that of water-soluble P, is relatively poor. This fact …

Abstract. Phosphate rock (PR) is an important mineral resource with numerous uses and applications in agriculture and the environment. PR is used in the …

A fungus, Penicillium sp. PS-113, isolated from soil showed the high phosphate-solubilizing activity in potato dextrose broth-rock phosphate to produce free phosphates to the culture broth with ...

Request PDF | On Nov 1, 2016, M.A. Bustamante and others published Phosphorus availability from rock phosphate: Combined effect of green waste composting and sulfur addition | Find, read and cite ...