Is Composting a Route to Solubilize Low-Grade Phosphate Rocks and Improve MAP-Based Composts?

Maluf, Henrique José Guimarães Moreira; Silva, Carlos Alberto; Morais, Everton Geraldo de; Paula, Leonardo Henrique Duarte de

doi:10.1590/18069657rbcs20170079

Cited by 15 publications

(16 citation statements)

References 31 publications

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“…Depending on the locality and the availability of organic resources, P availability of organic materials could be enhanced by addition of RP. Various reviews and experiments from across the globe have reported on several on-farm and off-farm sourced organic materials used in co-composting with RP [24,30,31]. Since the type of organic matter used directly affects the P availability, the effectiveness of various RP enriched compost materials has been investigated [32].…”

Section: Increasing P Availability Of Rp For Organic Systemsmentioning

confidence: 99%

“…Since the type of organic matter used directly affects the P availability, the effectiveness of various RP enriched compost materials has been investigated [32]. The organic materials used in conjunction with RP range from cereal straws/residues [33,34] to shrub/tree or other plant leaves [35], from by-products of industrial crops [36] to chicken, cow or sheep manures [37][38][39][40], as well as vermicompost [35,41] or a combination of one or more of these resources [30]. Organic materials or manures are generally co-composted with RP to facilitate acidulation of RP, but in some cases are just mixed with RP and applied directly without composting, yet with lower effectiveness [38,42].…”

Section: Increasing P Availability Of Rp For Organic Systemsmentioning

confidence: 99%

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Partial Acidulation of Rock Phosphate for Increased Productivity in Organic and Smallholder Farming

Çiçek

Bhullar

Mandloi³

et al. 2020

Sustainability

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There is a need to investigate and identify locally available organic substrates with acidifying potential, which can be used as an additive in rock phosphate (RP)-organic material composting mixtures. This paper reviews attempts to increase P availability in the context of smallholder, low-input and organic farming, and presents a case study from Central India that used a participatory approach to address P deficiency issues in cotton-based organic systems. Study was conducted from 2010 to 2014 through 61 on-farm trials and investigated the agronomic effectiveness of buttermilk-acidulated RP compost. The application of buttermilk-acidulated RP manure resulted in higher yields of cotton in all field trials and higher yields of soybean in all but one field trials. While on majority of the farms (18 out of 28), wheat yields increased with the application of buttermilk-acidulated RP compost, a quarter of the field trials (7 out of 28) exhibited yields lower than farmers’ practices. The study showed that it was possible to develop a locally adoptable solution to an agronomic constraint using locally available resources including the indigenous knowhow. Buttermilk proved to be an effective acidulating agent that can be added to RP-amended compost.

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Section: Increasing P Availability Of Rp For Organic Systemsmentioning

confidence: 99%

Section: Increasing P Availability Of Rp For Organic Systemsmentioning

confidence: 99%

Partial Acidulation of Rock Phosphate for Increased Productivity in Organic and Smallholder Farming

Çiçek

Bhullar

Mandloi³

et al. 2020

Sustainability

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“…About 45 L of the mixture from each mixing ratio or treatment was left for 38 days in 50 L compost bins, according to Li et al [16]. Samples were collected each time the compost mixtures were turned on 0, 4,8,12,16,20,24,31, and 38 days. At each sampling date, a homogeneous sample of 200 g was taken from the top, middle, and bottom of each compost bin using the quartering method [15,17].…”

Section: Experiments Design and Proceduresmentioning

confidence: 99%

“…Total P was determined using the Automated Discrete Analyzers Model Smart Chem 200 after digestion with H 2 SO 4 -H 2 O 2 . Water-soluble P contents were determined by the method of Maluf et al [24]. Citric acid-P was extracted by stirring the mixture with a 2% citric acid solution for 30 min, in a sample to solution ratio of 1:20 (w/v), according to the Chinese standard of organic fertilizers [25].…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…Some studies have suggested that the addition of mineral P sources would decrease the organic matter decomposition rate during composting [37,38], while other studies obtained the opposite result [26,30]. Lee et al [39] and Maluf et al [24] added different forms of phosphorus during composting, and both concluded that the addition of phosphorus increased the organic matter decomposition rate during composting, but the addition of a high concentration of soluble salt to the compost piles inhibited the activity of the decomposers. In this study, when the addition ratio of BM reached 15%, the mineralization rate of organic carbon had a dramatic increase, which resulted in the lowest amounts of total carbon measured for treatments T6 and T9 (Figure 1b).…”

Section: Organic Carbon Contentmentioning

confidence: 99%

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Combined Addition of Bovine Bone and Cow Manure: Rapid Composting of Chestnut Burrs and Production of a High-quality Chestnut Seedling Substrate

Chen

Tian

et al. 2020

Agronomy

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In China, chestnut burrs (CB) are produced at a rate of a million tons per year as the major byproduct of chestnut orchards. It is necessary to utilize the chestnut forest green waste and convert it into a valuable seedling media for the sustainable cultivation of chestnut seedlings. In this study, we composted CB with two waste products of cattle farming, namely cow manure (CM) and bovine bone (BM). We also evaluated the potential of CB compost application in chestnut forest sustainability. Results indicated that the best combination was the addition of 15% BM and 55% CM. This combination significantly improved the composting environment by increasing pH, enhancing phosphorus concentration and mineral elements such as Ca, Na, Mg and Zn, and shortened the composting period to 38 days. This combination also resulted in the highest content of citric acid-P (109.20 times than the control treatment) and the lowest content of NH 4 + -N (0.28 times than control treatment) indicating a better N and P structure of the final compost product. This combination achieved a greater degradation rate of CB cellulose (61.45%), hemicellulose (37.87%), and a more significant degradation of outer epidermis structure. When CB compost was used as a growing media, a significant decrease in photosynthesis stress of chestnut seedlings was observed, which was mainly manifested as a decrease in photochemical quenching (qP) and an increase of the maximum efficiency of PSII photochemistry under dark-adaption (Fv/Fm). Addition of 10% CB compost (in volume basis) is suggested, which resulted in the tallest chestnut seedlings (59.83 cm) with a stem diameter of 0.91 cm after six months of growth. In summary, this research provides an environmentally friendly strategy for chestnut orchard sustainability: rapid composting of CB, then immediate application as a high-quality substrate for chestnut seedlings.Agronomy 2020, 10, 288 2 of 18 step for chestnut production. The popularization of burr removal equipment has resulted in the need for intensive management of CB. Due to CB recalcitrant biodegradability and knotty spicular structure, incineration is still the main method of dealing with CB waste [3,4]. Since CB, as FGW, is rich in organic matter and minerals, it is desirable to convert it into a high value byproduct such as compost.Composting is a popular and clean method to dispose of FGW [5]. Mature FGW compost has high porosity and high organic carbon content and can be utilized as a high-quality soil amendment [6]. Shrestha et al. [7] reported that the application of compost increased soil organic carbon content, reduced CO 2 and N 2 O emissions, and increased CH 4 uptake. Chehab et al. [8] indicated that the olive FGW compost amendment resulted in an increased performance in mature olive trees and in a maximum yield of photosystem II (Fv/Fm). Composting recycles organic matter, nitrogen, phosphorous, and mineral elements in the FGW when growing seedlings [9]. In a recent study, Shalizi et al. [10] increased the biomass of Eucalyptus bentham...

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A review and meta‐analysis of the agricultural potential of struvite as a phosphorus fertilizer

Hertzberger

Cusick

Margenot

2020

Soil Science Soc of Amer J

102

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The low water solubility of struvite is thought to limit its agronomic utility as a phosphorus (P) fertilizer compared with highly soluble P fertilizers. Furthermore, struvite's fertilizer potential is complicated by its hypothesized soil pH‐dependent solubility, crop‐specific interactions, and limited availability of struvite‐derived N, which may explain conflicting reports of crop responses to struvite compared with conventional P fertilizers. A systematic literature review and meta‐analysis was conducted to evaluate the effects of soil pH, soil test P (STP), P rate, struvite particle size, and struvite‐derived N on crop aboveground biomass, P concentration, P uptake, and N uptake. Struvite‐fertilized plants yielded higher biomass, P concentration, and P uptake compared with ammonium phosphates, and superphosphates in soils with pH < 6 and crop responses decreased with increasing pH. Crop responses to struvite were inversely related to experiment duration to soil mass ratios (d kg−1) used in greenhouse studies, opposite to the hypothesized benefit of more roots per unit soil on struvite dissolution. The proportion of total N applied derived from struvite increased with increasing struvite‐P application rate and was inversely related to total N uptake, likely due to the increased crop reliance on slowly available struvite‐N. Crop responses were potentially overestimated by high STP and/or P rates and underestimated due to N limitation from large proportions of total N applied derived from struvite. Evaluations of struvite collectively indicate its efficacy as a P fertilizer is affected by soil pH and its contribution to total N application.

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Is Composting a Route to Solubilize Low-Grade Phosphate Rocks and Improve MAP-Based Composts?

Abstract: Is composting a route to solubilize low-grade phosphate rocks and improve map-based composts? Rev Bras Cienc Solo. 2018;42:e0170079.

Cited by 15 publications

References 31 publications

Partial Acidulation of Rock Phosphate for Increased Productivity in Organic and Smallholder Farming

Partial Acidulation of Rock Phosphate for Increased Productivity in Organic and Smallholder Farming

Combined Addition of Bovine Bone and Cow Manure: Rapid Composting of Chestnut Burrs and Production of a High-quality Chestnut Seedling Substrate

A review and meta‐analysis of the agricultural potential of struvite as a phosphorus fertilizer

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