scholarly journals Enhanced efficiency of phosphorus fertilizer in soybean and maize

2019 ◽  
pp. 1638-1642
Author(s):  
Adilson Pelá ◽  
Rafael Umbelino Bento ◽  
Lucas Brennon Romão Crispim ◽  
Roberto dos Anjos Reis Jr
Keyword(s):  
Morphological Characteristics ◽  
Ammonium Phosphate ◽  
Tropical Soils ◽  
Fertilizer Efficiency ◽  
Phosphorus Fertilizer ◽  
P Fertilization ◽  
Phosphate Fertilizers ◽  
Agronomic Efficiency ◽  
P Fertilizer ◽  
Fertilization Experiments

Soybeans and maize are the most cultivated crops in tropical soils and require large amounts of phosphate fertilizers. The use of enhanced-efficiency fertilizers is a promising technology to minimize losses of P by fixation in highly weathered tropical soils. The objectives of this study were to evaluate morphological characteristics, soybean P and boron foliar content, yield and agronomic efficiency of P fertilizer in response to P rates and sources in maize and soybean crops. Two P fertilization experiments with the sources Mono-ammonium Phosphate (MAP) and Policote coated MAP were carried out, one in maize (0, 20, 40, 80, 120 and 160 kg P2O5 ha-1) and another in soybean crop (0, 20, 40, 80 and 120 kg P2O5 ha-1). The morphological characteristics, soybean P and boron foliar content, yield and agronomic P fertilizer efficiency were evaluated. The results showed that maize and soybean morphological characteristics, as well as soybean foliar P and boron contents were not influenced by fertilization. P fertilization increased soybean yield. Policote coated MAP was more efficient than MAP (conventional fertilizer) to produce higher maize and soybean yields and higher agronomic efficiency of P use. For higher productivity, we recommend the dose of 102.9 kg P2O5 ha-1 of Policote coated MAP for soybean and 97.6 kg P2O5 ha-1 for maize.

scholarly journals Solubility and Efficiency of Rock Phosphate Fertilizers Partially Acidulated with Zeolite and Pillared Clay as Additives

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 918
Author(s):  
Ana Paula Bettoni Teles ◽  
Marcos Rodrigues ◽  
Paulo Sergio Pavinato
Keyword(s):  
Crop Production ◽  
Tropical Soils ◽  
Pillared Clay ◽  
Triple Superphosphate ◽  
Phosphate Fertilizers ◽  
Rock Phosphates ◽  
Agronomic Efficiency ◽  
Natural Rock ◽  
Low Efficiency ◽  
Leaching Columns

Soluble phosphates are the most common sources currently used in crop production in tropical soils; however, they present low efficiency and are more expensive than natural rock phosphates. The objective was to develop new phosphate fertilizers with slow solubility through the partial acidification of rock phosphates (RPs), incorporating materials with adsorption characteristics to favor slow dissolution and prevent phosphorus (P) fixation in the soil. Three rock phosphates, Araxá (ARP), Bayovar (BRP) and Morocco (MRP), were evaluated at two acidulation levels (25 and 50% Ac.) and two additives; pillared clays (PILC) and zeolites (Zeo), plus triple superphosphate (TSP) and a control (nil-P). The soil diffusion was evaluated in concentric rings in Petri dishes. Solubility was evaluated in leaching columns and sampled in layers from surface for P forms in the soil profile. The relative agronomic efficiency (RAE) was evaluated in maize. Greater diffusion was provided by TSP, followed by BRP and MRP both with 50% Ac. + Zeo, and MRP with 50% Ac. + PILC. Percolated P was more pronounced under TSP, followed by RPs (BRP and MRP) with 50% Ac. + Zeo. BRP and MRP + 50% Ac. were the most promising sources with RAE above 74% compared to TSP.

Field pea response to seeding depth and P fertilization

2001 ◽  
Vol 81 (3) ◽  
pp. 573-575 ◽  
Author(s):  
Adrian M. Johnston ◽  
F. Craig Stevenson
Keyword(s):  
Grain Yield ◽  
Seedling Emergence ◽  
Field Pea ◽  
Phosphorus Fertilizer ◽  
P Fertilization ◽  
Seedling Density ◽  
Monoammonium Phosphate ◽  
Pisum Sativum L ◽  
Field Peas ◽  
P Fertilizer

A study was conducted at Melfort, SK, in 1998 and 1999 to determine whether seeding depth and P fertilization affect field pea (Pisum sativum L.) seedling emergence and grain yield. Treatments included a factorial combination of three seeding depths (38 mm, 76 mm, and 114 mm) with and without 25 kg P2O5 ha–1 as monoammonium phosphate. While seedling density was not affected by seeding depth at 3 wk after planting, the deepest seeding depth produced significantly fewer seedlings than the two shallower depths at 5 wk post-seeding. A year-by-seeding-depth interaction was recorded for grain yield, with deep seeding (114 mm) reducing yield by 8.5% in 1998, while no significant differences were recorded due to depth in 1999. Side-banded phosphorus fertilizer applications reduced seedling emergence at 3 wk; however, no difference was recorded by 5 wk after seeding. At harvest, addition of P fertilizer significantly increased grain yields on this high P testing soil; however, this response was small, averaging 138 kg ha–1. Results of this trial indicate that while field peas can tolerate deep seeding there appears to be little benefit from seeding deeper than 76 mm. Key words: Field pea, seeding depth, P fertilizer

Effect of Irrigated Crop Rotation and Phosphorus Fertilizer-Manure on Soil Water Repellency of a Clay Loam Soil in Southern Alberta

2021 ◽  
Author(s):  
Jim J. Miller ◽  
Mallory Owen ◽  
Ben Ellert ◽  
Xueming Yang ◽  
Craig F. Drury ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Repellency ◽  
Fertilizer Application ◽  
Clay Loam ◽  
P Fertilization ◽  
Soil Water Repellency ◽  
Hydrophobic Coatings ◽  
Southern Alberta ◽  
P Fertilizer ◽  
Loam Soil

Soil water repellency (SWR) was measured for a 28 yr field study under irrigation on a clay loam Dark Brown soil in southern Alberta. The objectives were to study the effect of legume-cereal crop rotations, feedlot manure, and phosphorus (P) fertilizer application on soil hydrophobicity (SH) and soil water repellency index (RI) under irrigation. Mean SH and RI were similar (P > 0.05) for a legume-cereal and cereal rotation, and were unaffected by P fertilization. However, P fertilization shifted the RI classification from slight to sub-critical. In contrast, SH was significantly greater for manured than non-manured treatments, while RI was unaffected. Soil organic carbon (SOC) concentration was significantly (P ≤ 0.05) correlated with SH (r=0.74), but not with RI (r=-0.17). This suggested a closer association between the quantity of SOC and quantity of hydrophobic compounds (SH method) compared to the hydrophobic coatings inhibiting infiltration of water (RI method). No significant correlation between SH and RI (r=-0.09) suggests that SH is not a good predictor of SWR using the RI method. Overall, manure application increased SH and P fertilization shifted the RI classification from slight to sub-critical. In contrast, legume-cereal rotations had no influence on SH and SWR using RI method compared to continuous cereal.

scholarly journals Soil phosphorus availability and soybean response to phosphorus starter fertilizer

2014 ◽  
Vol 38 (5) ◽  
pp. 1487-1495 ◽  
Author(s):  
Ciro Antonio Rosolem ◽  
Alexandre Merlin
Keyword(s):  
Soil Phosphorus ◽  
Soil Surface ◽  
Tropical Soils ◽  
P Fertilization ◽  
Soil P ◽  
Brachiaria Ruziziensis ◽  
Soluble P ◽  
Surface Spread ◽  
P Sources

Phosphorus fixation in tropical soils may decrease under no-till. In this case, P fertilizer could be surface-spread, which would improve farm operations by decreasing the time spend in reloading the planter with fertilizers. In the long term, less soluble P sources could be viable. In this experiment, the effect of surface-broadcast P fertilization with both soluble and reactive phosphates on soil P forms and availability to soybean was studied with or without fertilization with soluble P in the planting furrow in a long-term experiment in which soybean was grown in rotation with Ruzigrass (Brachiaria ruziziensis). No P or 80 kg ha-1 of P2O5 in the form of triple superphosphate or Arad reactive rock phosphate was applied on the surface of a soil with variable P fertilization history. Soil samples were taken to a depth of 60 cm and soil P was fractionated. Soybean was grown with 0, 30, and 60 kg ha-1 of P2O5 in the form of triple phosphate applied in the seed furrow. Both fertilizers applied increased available P in the uppermost soil layers and the moderately labile organic and inorganic forms of P in the soil profile, probably as result of root decay. Soybean responded to phosphates applied on the soil surface or in the seed furrow; however, application of soluble P in the seed furrow should not be discarded. In tropical soils with a history of P fertilization, soluble P sources may be substituted for natural reactive phosphates broadcast on the surface. The planting operation may be facilitated through reduction in the rate of P applied in the planting furrow in relation to the rates currently applied.

Poorly soluble, iron-aluminium phosphates in ammonium phosphate fertilizers: Their nature and availability to plants

Soil Research ◽  
1983 ◽  
Vol 21 (2) ◽  
pp. 183 ◽  
Author(s):  
RJ Gilkes ◽  
P Mangano
Keyword(s):  
Total Phosphorus ◽  
Powder Diffraction ◽  
Phosphorus Content ◽  
Ammonium Phosphate ◽  
Residual Value ◽  
Phosphate Fertilizers ◽  
Total Phosphorus Content ◽  
X Ray ◽  
Poorly Soluble ◽  
Residual Effectiveness

Both monoammonium and diammonium phosphate fertilizers contain various (Ca,Mg)(NH4)- (Fe,Al)(PO4)(F,OH)H2O compounds that are insoluble in water and comprise 4.9-9.9% of the total phosphorus content of the fertilizers. The compounds have been isolated and characterized by chemical, X-ray powder diffraction, ix., and thermogravimetric techniques. The compounds are only 35-60% as effective as monocalcium phosphate (MCP) in supplying phosphorus to wheat grown under glasshouse conditions. The residual effectiveness of the compounds for a second crop of wheat was generally lower (10-20% relative to freshly applied MCP) than the residual value of MCP (20 %).

scholarly journals Evaluation of effects of water-saving superabsorbent polymer on corn (Zea mays L.)yield and phosphorus fertilizer efficiency

2016 ◽  
Vol 40 ◽  
pp. 365-378 ◽  
Author(s):  
Adem GÜNEŞ ◽  
Nurgül KITIR ◽  
Metin TURAN ◽  
Erdal ELKOCA ◽  
Ertan YILDIRIM ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Water Saving ◽  
Fertilizer Efficiency ◽  
Superabsorbent Polymer ◽  
Phosphorus Fertilizer

scholarly journals Phosphorus fertilization with enhanced efficiency in soybean and corn crops

2020 ◽  
pp. 78-84
Author(s):  
Luiz A. Zanão Jr ◽  
Orivaldo Arf ◽  
Roberto dos A. Reis Jr ◽  
Natalia Pereira
Keyword(s):  
Field Experiments ◽  
Tropical Soils ◽  
Water Soluble ◽  
Phosphorus Fertilization ◽  
Corn Yield ◽  
Phosphorus Use Efficiency ◽  
Phosphorus Fertilizer ◽  
Different Seasons ◽  
Enhanced Efficiency Fertilizer ◽  
High Yields

Due to the low natural availability of phosphorus (P) in tropical soils and the plant’s need for P, the use of phosphorus fertilizers of increased efficiency is an important tool for achieving high yields. The aims of this study were to evaluate plant growth, foliar P content and yield of soybean and corn crops in different seasons and places in response to P rates and sources. The sources of P were monoammonium phosphate (MAP) and Policote coated MAP (Policote+MAP). Field experiments were carried out comparing MAP performance compared to Policote coated MAP (MAP+Policote), an additive based on water soluble polymers. Experiments formed by P sources (MAP including 11% N, 52% P2O5 and MAP+Policote including 10% N, 49% P2O5) and rates were carried out in soybean and corn crops in different dates and sites. In the soybean crop, a (2x4) +1 factorial was used, comprising of two sources such as MAP and MAP+Policote and four rates of P (30, 60, 90 and 120 kg ha-1 of P2O5), besides the control. For corn, a (2x5) factorial was used, including two sources and five rates of P (0, 40, 80, 120 and 160 kg ha-1 of P2O5). The results showed that phosphorus fertilization would increase soybean and corn plant heights and yields in different seasons and places. Soybean and corn yield and agronomic phosphorus use efficiency were higher with Policote coated phosphorus fertilizer than with conventional phosphorus fertilizer. Policote coated phosphorus fertilizer can be used as an enhanced efficiency fertilizer because it increased soybean and corn yields in different seasons and places.

scholarly journals Enhanced-efficiency phosphorus fertilizer: promising technology for carrot crop

2018 ◽  
Vol 36 (4) ◽  
pp. 492-497
Author(s):  
Adilson Pelá ◽  
Matheus A Ribeiro ◽  
Rafael U Bento ◽  
Luiz HB Cirino ◽  
Roberto A Reis Júnior
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Phosphate Fertilizer ◽  
Root Diameter ◽  
Additional Treatment ◽  
Mineral Fertilizers ◽  
Phosphorus Fertilizer ◽  
Agronomic Efficiency ◽  
P Content ◽  
Phosphate Fertilization

ABSTRACT Several studies were carried out to evaluate polymer-coated mineral fertilizers; however, few studies, on the agronomic efficiency of these fertilizers in the field in carrot crop, are available. Thus, we aimed to evaluate the use of enhanced-efficiency phosphorus fertilizer coated with polymers in carrot (Daucus carota). The experiment was carried out in field, in Ipameri-GO. The experimental design was randomized blocks, arranged in an incomplete factorial design (5x2)+1, considering five phosphorus doses (150, 300, 450, 600 and 750 ha-1 kg P2O5), two P sources [conventional MAP (monoammonium phosphate) and polymer-coated MAP (Policote)] and one additional treatment (control, without P). The evaluated traits were plant height, root length, root diameter, total productivity, marketable root classes, agronomic efficiency of phosphate fertilization and P content in the roots. Data were submitted to analysis of variance and regression. Phosphate fertilization did not influence the P content in carrot roots, but increased plant height, root length and diameter and yield of carrot roots. Polymer-coated phosphate increased plant height, length, diameter and productivity of carrot roots, when compared to conventional fertilizer. Carrot productivity was, on average, 15.5% higher with polymer-coated P source (39.42 t ha-1) than with the conventional P source (34.11 t ha-1). Marketable roots were also improved with the use of polymer-coated phosphate fertilizer. Phosphate fertilizer coated with polymer increased the agronomic efficiency of phosphate fertilization in the carrot crop.

Developments in Production of Granular Urea-Ammonium Phosphate Fertilizers

1968 ◽  
Vol 7 (1) ◽  
pp. 124-133 ◽  
Author(s):  
R. S. Meline ◽  
G. C. Hicks ◽  
T. M. Kelso ◽  
M. M. Norton
Keyword(s):  
Ammonium Phosphate ◽  
Phosphate Fertilizers

scholarly journals The Application of Phosphate Solubilizing Microbes Biofertilizer to Increase Soil P and Yield of Maize on Ultisols Jatinangor

2017 ◽  
Vol 2 (6) ◽  
pp. 179
Author(s):  
Betty Natalie Fitriatin ◽  
Pujawati Suryatmana ◽  
Anny Yuniarti ◽  
Noor Istifadah
Keyword(s):  
Soil Phosphorus ◽  
Block Design ◽  
Fertilizer Efficiency ◽  
Phosphate Solubilizing Bacteria ◽  
Soil P ◽  
Soil Phosphate ◽  
Randomized Block Design ◽  
P Fertilizer ◽  
Aspergillus Sp ◽  
Phosphate Solubilizing

Ultisols has problems of low availability of nutrients, especially phosphorus. To improve soil phosphate and P fertilizer efficiency, it is necessary to develop biofertilizer such as phosphate solubilizing microbes. Phosphate solubilizing microbes (PSM) have the capability of dissolving soil phosphorus which have been adsorbed and can mineralize organic P to become inorganic P, hence increasing the avalibility of P in the soil. Phosphate solubilizing bacteria (Pseudomonas mallei and Pseudomonas cepacea) and phosphate solubilizing fungi (Penicillium sp. and Aspergillus sp) were selected based on their ability to dissolve P. The experiment was conducted at Jatinangor, West Java Indonesia to study the application of PSM biofertilizer to increase soil P and yield of maize. Experiment used a Randomized Block Design (RBD) in factorial pattern, consisting of two factors with three replications. The first factor consisted of PSM biofertilizer, which were; without PSM, 5 L ha-1 of PSM and 50 kg ha-1 of PSM.  The second factor was P fertilizer with five levels (0%, 25%, 50%, 75% and 100% dosage of recommendation). The results showed that the application of PSM biofertilizer increased soil phosphate and yield of maize on Ultisol Jatinangor.  The dosage of P inorganic fertilizers was reduced by 50%.Keywords: ultisol, maize, biofertillizer, phospate-solubilizing bacteria.

Sign in / Sign up

Export Citation Format

Share Document