Mussoorrie rock phosphate-pyrite mixture as phosphate fertilizer

1996 ◽  
Vol 45 (3) ◽  
pp. 187-191 ◽  
Author(s):  
S. N. Sharma ◽  
R. Prasad
Keyword(s):  
Rock Phosphate ◽  
Phosphate Fertilizer

scholarly journals OPTIMALISASI TANAH KRITIS DENGAN MIKORIZA DAN FOSFAT UNTUK PENINGKATAN PERTUMBUHAN DAN SERAPAN HARA KEDELAI

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Yusrizal Yusrizal ◽  
Muyassir Muyassir ◽  
Syafruddin Syafruddin
Keyword(s):  
Key Words ◽  
Interaction Effect ◽  
Rock Phosphate ◽  
Phosphate Fertilizer ◽  
Random Design ◽  
Agricultural Faculty ◽  
Soybean Plants ◽  
Phosphate Source ◽  
Experimental Garden ◽  
Banda Aceh

This study aims to identify the effects of mycorrhiza arbuscular and phosphate source fertilizer on the growth and nutrients absorption of soybean on critical land. The research was carried out in the experimental garden of Agricultural Faculty, University of Syiah Kuala Darussalam, Banda Aceh. The research was done in an experiments using polybag of random design group (shelves) consisting 2 factors, namely mycorrhiza arbuscular consisting of 4 standards without mycorrhiza, glomus 10 g, mycorrhiza gigaspora 10 g, and mixture glomus 5 g + gigaspora 5 g and phosphate fertilizer consisting 4 factors namely without phosphate fertilizer, rock fosfat, guano, and SP-36. The result showed that the interaction effect of mycorrhiza glomus and guano phosphate application improved growth and nutrients absorption of soybean plants. Key words: Gigaspora, Glomus, guano, rock phosphate, soybean, SP-36/>

scholarly journals PENGARUH DOSIS INOKULUM AZOLLA DAN PUPUK FOSFAT ALAM TERHADAP KETERSEDIAAN P DAN HASIL PADI DI ALFISOL

2014 ◽  
Vol 29 (2) ◽  
pp. 106
Author(s):  
Canggih Jati Nusantara ◽  
Sumarno Sumarno ◽  
Widyatmani Sih Dewi ◽  
Sudadi Sudadi
Keyword(s):  
Rock Phosphate ◽  
Phosphorus Content ◽  
Rice Yield ◽  
Phosphate Fertilizer ◽  
Fertilizer N ◽  
Total N ◽  
Natural Phosphate ◽  
Significant Difference ◽  
Comparative Treatment ◽  
Difference Effect

<p>Rice production in Indonesia can not cover the national needs. The low productivity caused by the decline in soil fertility. One way to increase the phosphorus content in the soil is to provide natural phosphate fertilizer and Azolla inoculum. This study was conducted to determine the proper dose of Azolla inoculum and rock phosphate to increase the availability of phosphate and increase the yield of rice plants on land Alfisol. This study uses the two-factor factorial CRD comparative treatment of manure and fertilizer N, P, K. Analysis of the observed data using analysis of variance at 5% level and if there is a significant difference effect followed by DMRT 5% level to compare between treatments. The results showed that treatment of Azolla inoculum and phosphate can increase the availability of phosphate in the Alfisol soil and can increase rice yield. On the parameters available P showed the highest results in the treatment of Azolla 2.5 tons / ha without natural phosphate and Azolla 5 tons / ha of natural phosphate 350 kg / ha which is 10.81 ppm. In addition, administration of Azolla inoculum and phosphate levels give rise to CEC, organic matter, total N in the soil and soil pH.</p>

scholarly journals Response of Soil Chemical Properties to Rhizobium and Rock Phosphate Fertilizer Application under Green - Grams in Tharaka Nithi County, Kenya

2020 ◽  
pp. 43-52
Author(s):  
F. K. Mbaka ◽  
H. O. Ndukhu ◽  
G. O. Oloo-Abucheli
Keyword(s):  
Soil Fertility ◽  
Soil Ph ◽  
Rock Phosphate ◽  
Chemical Properties ◽  
Cost Effective ◽  
Phosphate Fertilizer ◽  
Soil Chemical Properties ◽  
Soil Fertility Management ◽  
Rhizobium Inoculation ◽  
Fertility Management

Soil fertility decline is one of the major constraints in agricultural productivity. Biological nitrogen fixation (BNF) in legumes can offer a cost-effective and sustainable means towards soil fertility management. There is limited information on green-gram BNF enhancement through Rhizobium inoculation with rock phosphate fertilizer. The objective of this study was to determine the effects of Rhizobium and rock phosphate fertilizer application on soil chemical properties under green-gram varieties. The study was carried out at Chuka university horticultural research farm in two seasons (November 2019 - January 2020 and February - April 2020). A factorial experiment of 2 x 2 x 2 was laid out in a randomized complete block design (RCBD). There were three factors; varieties (N26 and KS20), rock phosphate (0 and 30 kg P ha-1) and Rhizobium inoculation (0 and 100 g ha-1) making a total of eight treatments which were replicated three times. Soil sampling and analyses were done for soil pH, fixed-N, total nitrogen (TN), exchangeable cations (EC), available Phosphorous (P), total organic carbon (TOC), and exchangeable potassium (K) before planting and after harvesting of green-grams for the two seasons. Data was analysed using GENSTAT 15th edition (P≤0.05). Results from both seasons indicated that combined application of rock phosphate at 30 kg P ha-1 and Rhizobium inoculation at 100 kg ha-1 showed significant (P≤0.05) higher increase in soil chemical properties over other treatments. However, treatment R1P1KS20 recorded significantly higher results in soil pH (7.54), TN (0.58%), TOC (3.45%), P (68.20 ppm) and EC (0.95 CmolKg-1), fixed-N (0.50%) and K (1.75 CmolKg-1). On the other hand treatment R0P0N26 recorded significant (P≤0.05) lower results in soil pH (5.23), TN (0.04%), TOC (1.86%), P (8.76 ppm), EC (0.21 CmolKg-1) and K (0.58 CmolKg-1). Therefore, Rhizobium inoculation in green-grams in combination with rock phosphate is an important legume nitrogen fixation enhancement method. This method is cost effective for farmers in sustainably supplementing nitrogen and phosphorous in their farms for improved soil fertility management. Based on the findings, combining Rhizobium 100g ha-1 and rock phosphate 30 kg P ha-1 with variety KS20 were recommended for a sustainable soil fertility management in Tharaka Nithi County.

scholarly journals Phosphate Solubilizing Microorganisms for Cereal Production in Adamawa (Cameroon)

2020 ◽  
Vol 1 (6) ◽  
Author(s):  
A. Maimouna ◽  
T. L. Tchuenteu ◽  
D. Nwaga ◽  
J. P. Nguetnkam ◽  
C. Megueni
Keyword(s):  
Mycorrhizal Fungi ◽  
Rock Phosphate ◽  
Phosphorus Content ◽  
Phosphate Fertilizer ◽  
Positive Control ◽  
Negative Control ◽  
Limiting Factor ◽  
Maize Production ◽  
Maize Seeds ◽  
Phosphate Solubilizing

Phosphorus is usually a limiting factor of acidic tropical soil and limited by the low availability and high cost. The present study aimed to evaluate the interaction of Hangloa vivianite (as phosphorus supply), the selected Mycorrhizal fungi strains (M) and Phosphate Solubilizing Microorganisms (PSM) on maize production in the Adamawa Region of Cameroon. An experimental design with 15 combinations of bacteria strains (B), ( BGL12 as B1, SSL9 as B2, BNBL17 as B3, RBNBL5 as B4, and the combinations of these singles strains, namely B1B2, B1B3, B1B4, B2B3, B2B4, B3B4, B1B2B3, B1B2B4, B1B3B4, B2B3B4, B1B2B3B4) and 05 inputs (mycorrhiza (M), Rock Phosphate (RP) and mixture of M with RP (RP+M)), negative control (C-) and positive control (C+)) was used. After four months of growth, nutrients (Phosphorus and Nitrogen) content and grain yield were assessed. Results indicated that total phosphorus content of M, RP and RP+M plants were 2.42, 2.11 and 4.00 fold higher than that of unfertilized plants. M, RP and RP+M increased maize seeds yield by 26.20%, 26.89% and 165.51% relative to negative control. The benefit of the selected PSM with Mycorrhizal fungi strains (246.76% for N; 216.34% for P) and with the Rock Phosphate (314.23% for N; 167.26% for P) was more pronounced with the combination of RP+M (1030.45% for N and 967.31% for P). These results showed that PSM associated with Mycorrhiza can be used as inoculants to improve the efficiency of vivianite as phosphate fertilizer for sustainable maize production under Sudano-Guinean Climate of Adamawa Cameroon region.

The effect on grain sorghum of depth of placement of initial phosphate fertilizer on new land at Katherine, N.T

1967 ◽  
Vol 7 (24) ◽  
pp. 33 ◽  
Author(s):  
LJ Phillips ◽  
MJT Norman
Keyword(s):  
Dry Matter ◽  
Rock Phosphate ◽  
Phosphate Fertilizer ◽  
Grain Sorghum ◽  
Dry Matter Yield ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Christmas Island ◽  
Loam Soil

In an experiment on Tippera clay loam soil at Katherine, N.T., between 1962 and 1965, a comparison was made of the effect of depth of placement of initial applications of superphosphate and Christmas Island rock phosphate dust on the yield of grain sorghum for the first three years of cropping on new land. Placement of 4 cwt an acre superphosphate or 12 cwt an acre rock phosphate in a layer at 8 inches depth gave lower grain, dry matter, and phosphorus yields than mixing the same amount and type of fertilizer in the 0-4 inch or 0-8 inch layers. There were no significant differences in grain, dry matter, or phosphorus yield between mixing in the 0-4 or 0-8 inch layers. Additional annual applications of 4 cwt an acre superphosphate banded with the seed increased grain and dry matter yield when the initial phosphate fertilizer was placed in a layer at 8 inches, but not when it was mixed in the 0-4 or 0-8 inch layers.

Granular reactive apatite rock phosphate is not an effective phosphorus fertilizer in the short term on lateritic soils in south-western Australia.

1986 ◽  
Vol 26 (2) ◽  
pp. 217 ◽  
Author(s):  
MDA Bolland ◽  
AJ Weatherley ◽  
RJ Gilkes ◽  
JW Bowden
Keyword(s):  
Western Australia ◽  
Rock Phosphate ◽  
Field Experiments ◽  
Maximum Yield ◽  
Subterranean Clover ◽  
Phosphate Fertilizer ◽  
Carbonate Apatite ◽  
Rock Phosphates ◽  
Fertilizer Effectiveness ◽  
Eastern Australia

The effectiveness, as a phosphate fertilizer, of granular reactive rock phosphate (carbonate substituted apatite from North Carolina, U.S.A.), granular triple superphosphate and partly powdered Duchess non-reactive rock phosphate (low carbonate apatite from north-eastern Australia) was compared in three field experiments on different soil types in different climatic regions of south-western Australia. Calciphos (finely ground calcined crandallite rock phosphate from Christmas Island) was included in one experiment. The rock phosphates were incorporated into the soil and their effectiveness was compared with both topdressed and incorporated superphosphate. Different species were grown at each site (barley, triticale and subterranean clover). As determined on the basis of relative amounts of fertilizer required for constant yield, the effectiveness of all the rock phosphates relative to incorporated superphosphate was very low at each site throughout the growth of each species. Fertilizer effectiveness of rock phosphates was about one-fifth that of superphosphate for barley, and one-tenth for triticale and clover. The maximum yield obtained from rock phosphate was generally 88-100% that obtained from superphosphate. Incorporation did not greatly affect the effectiveness of superphosphate.

scholarly journals The application of rock phosphate increases the growth and yield of rice on acid sulphate soil of South Kalimantan, Indonesia

2021 ◽  
Vol 6 (1) ◽  
pp. 20
Author(s):  
Suriyanti Ahmad ◽  
Sri Nuryani Hidayah Utami ◽  
Azwar Ma'as ◽  
Wahida Annisa Yusuf ◽  
Husnain Husnain
Keyword(s):  
Plant Height ◽  
Rock Phosphate ◽  
Agricultural Research ◽  
Oryza Sativa L ◽  
Phosphate Fertilizer ◽  
Yield Component ◽  
Growth And Yield ◽  
High Iron Content ◽  
Spikelets Per Panicle ◽  
Acidity Level

A swampland has considerable potential in agriculture. This land has high soil acidity level, and high iron content. Therefore, the application of ameliorant to acid sulfate soil is essential to improve the soil and make it more suitable for rice cultivation. This study aimed to know the effects of phosphorus (P) from Moroccan Rock Phosphate (MRP) and fertilization on swamp rice (Oryza sativa L.). The experiment was conducted at the experimental location of Indonesian Swampland Agricultural Research Institute (ISARI), Puntik Village, Barito Kuala District, South Kalimantan and arranged in a randomized nested design consisting of 100 kg.ha-1 TSP (Control), 750 kg.ha-1, 1,000 kg.ha-1, and 1,250 kg.ha-1 Moroccan rock phosphate with four replications in each treatment.  The yield component of grain increased significantly at 3.77 ton.ha-1. The highest of grain yield was obtained in the application of 1,000 kg.ha-1 MRP. Meanwhile, significant positive correlation was observed between plant height and the number of spikelets per panicle. The application of phosphate fertilizer can increase soil pH, which affects the growth and yield of rice plants such as plant height and yield.

scholarly journals Yield and Yield Components of Potato (Solanum tuberosum) as Affected by Rock Phosphate in Standoff Soil, Southern Alberta Canada

2021 ◽  
Vol 13 (4) ◽  
pp. 35
Author(s):  
Adebusoye O. Onanuga ◽  
Roy Weasel Fat ◽  
Roy M. Weasel Fat
Keyword(s):  
Crop Production ◽  
Rock Phosphate ◽  
Potato Crop ◽  
Organic Fertilizer ◽  
Phosphate Fertilizer ◽  
Growth And Yield ◽  
Phosphate Level ◽  
Yield Parameters ◽  
Southern Alberta ◽  
And Control

An experiment was conducted in Standoff, Southern Alberta in April, 2020. The object of the experiment was to investigate effect of rock phosphate organic fertilizer on growth and yield of potato crop grown in Standoff. The varying levels of rock phosphate were broadcasted into the soil at control (0 P Kg ha-1), Low P level (50 P Kg ha-1) and High P level (100 P Kg ha-1). The basal application of urea inform of nitrogen fertilizer was applied at 280 N Kg ha-1. Potato seeds were planted at a distance of 30 by 90 cm. The three treatments were replicated three times, resulting into nine plants. One plant was taken out of uniformly grown tallest plant in each of the treatment to measure yield parameters. The yield parameters collected were subjected to analysis of variance (ANOVA) using Duncan&rsquo;s Multiple Range Test (DMRT) for separation of means. Results of the experiment indicated that High P and Low P rock phosphate fertilizer levels positively influenced weight of potatoes at 76 and 112 Days after sowing (DAS), respectively while High P rock phosphate fertilizer level got highest number of potatoes than Low P and control at 76 DAS. Furthermore, High P rock phosphate fertilizer level and control plots supported marketable number of potatoes at 76 DAS while High P rock phosphate fertilizer level favoured unmarketable number of potatoes at 112 DAS. It was quite obvious from the results that marketable weight of potatoes was positively influenced by High P rock phosphate level and Low P rock phosphate level at 76 and 112 DAS, respectively whereas unmarketable weight of potatoes was affected by High P rock phosphate fertilizer level at 112 DAS. These results revealed the beneficial use of rock phosphate for potato crop production

The effect of chemical extractant on the estimation of rock phosphate fertilizer dissolution

Soil Research ◽  
1984 ◽  
Vol 22 (4) ◽  
pp. 475 ◽  
Author(s):  
JC Hughes ◽  
RJ Gilkes
Keyword(s):  
Solid Solution ◽  
Rock Phosphate ◽  
Acid Soils ◽  
Barium Chloride ◽  
Phosphate Fertilizer ◽  
Direct Application ◽  
Rock Phosphates ◽  
Chemical Extractants ◽  
The Difference ◽  
The Tropics

Rock phosphates have been widely used in the acid soils of the tropics as direct application fertilizers. To estimate their rate and extent of dissolution various chemical extractants have been used. However, the acidic or inadequately buffered nature of these extractants promote extensive dissolution of the apatite and may result in a gross overestimate of the amount of rock phosphate dissolved. To overcome this problem, it is proposed that the soil is shaken for 1 h in 2 M barium chloride buffered at pH 8.1 with triethanolamine (solid : solution ratio of 1:10) and calcium determined in the filtered supernatant. The difference in extractable calcium between fertilized and unfertilized soil is a measure of the dissolution of the rock phosphate.

scholarly journals A Molecule of the Viridomycin Family Originating from a Streptomyces griseus-Related Strain Has the Ability to Solubilize Rock Phosphate and to Inhibit Microbial Growth

Antibiotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 72
Author(s):  
Hanane Hamdali ◽  
Ahmed Lebrihi ◽  
Marie Carmen Monje ◽  
Ahmed Benharref ◽  
Mohamed Hafidi ◽  
...  
Keyword(s):  
Microbial Growth ◽  
Plant Pathogens ◽  
Rock Phosphate ◽  
Streptomyces Griseus ◽  
Phosphate Fertilizer ◽  
Gram Positive Bacteria ◽  
Counter Ions ◽  
Common Plant ◽  
Growth Of Fungi

Some soil-borne microorganisms are known to have the ability to solubilize insoluble rock phosphate and this process often involves the excretion of organic acids. In this issue, we describe the characterization of a novel solubilizing mechanism used by a Streptomyces strain related to Streptomyces griseus isolated from Moroccan phosphate mines. This process involves the excretion of a compound belonging to the viridomycin family that was shown to play a major role in the rock phosphate bio weathering process. We propose that the chelation of the positively charged counter ions of phosphate constitutive of rock phosphate by this molecule leads to the destabilization of the structure of rock phosphate. This would result in the solubilization of the negatively charged phosphates, making them available for plant nutrition. Furthermore, this compound was shown to inhibit growth of fungi and Gram positive bacteria, and this antibiotic activity might be due to its strong ability to chelate iron, a metallic ion indispensable for microbial growth. Considering its interesting properties, this metabolite or strains producing it could contribute to the development of sustainable agriculture acting as a novel type of slow release bio-phosphate fertilizer that has also the interesting ability to limit the growth of some common plant pathogens.

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