Orientador: Jorge de Lucas Junior / Banca: Odivaldo José Seraphim / Banca: Adélia Pereira Miranda / Resumo: A avicultura brasileira alcançou nos últimos anos níveis de produtividade e ajuste na organização e coordenação que a colocam como uma das mais competitivas do mundo. A cama de frango gerada no processo produtivo das aves demonstra ter grande potencial para a obtenção de energia com o uso de biodigestores. Objetivou-se com a execução deste trabalho avaliar a inclusão de 5 e 7% do caldo de cana de açúcar, no processo de biodigestão anaeróbia da cama de frango com separação de sólidos em sistemas contínuos de abastecimento. O experimento foi dividido em duas fases, sendo que na primeira foi realizado o preparo do inóculo com dejeto de bovino leiteiro e na segunda fase foram abastecidos oito biodigestores contínuos com o inóculo obtido + cama de frango com separação de sólidos (CFCSS), associada ao caldo de cana em diferentes proporções composto por dois tratamentos com quatro repetições. O tratamento T1 - CFCSS (Controle) e tratamento T2 - CFCSS + caldo de cana (5% por um período de 30 dias e 7 % por mais 30 dias). Foram analisados os teores de sólidos totais (ST) e sólidos voláteis (SV), potencial de hidrogênio (pH) e concentrações de micro e macronutrientes. Para os tratamentos... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The Brazilian aviculture productionin in recent years achieved levels of productivity and adjustthe organization and coordination that pose as one of the most competitive in the world.The poultry litter generated in the production process of the birds shows a high potential to produce energy using biodigesters. Objective was to evaluate the inclusion of 5 and 7% of the juice of sugar cane in the process of anaerobic digestion of poultry litter with separation of solids in a continuous system of supply. The experiment was divided into two phases with the first was conducted in the preparation of the inoculums with dairy cattle manure and the second phase were supplied with eight digesters continuous inoculums obtained + poutry litter with separation of solids (PLSS) associated cane juice in different proportions composed of 4 two treatments with four replications. The T1 - PLSS (Control) and T2 PLSS + cane juice (5% for a period of 30 days and 7% for 30 days). We analyzed the levels of total solids (TS) and volatile solids (VS), potential hydrogen (pH) and concentrations of macronutrients and micronutrients. For those treatments evaluated showed that there was a reduction of TS and VS, 66,05 and 74,33% respectively for a control 1. Treatment with 5% sugar cane juice showed a value of 0,5500 m3 of biogas and received sugar cane juice to 7% showed a value of 0,6919 m3 of biogas within 30 days of operation. These results demonstrate that the juice was effective for the methanogenic bacteriadegrade organic mattere expressing great potential for biogas production / Mestre

The poultry industry in Europe is vast and proper waste management is required in order to comply with environmental regulations. As a result, poultry litter represents a potential fuel candidate for thermal conversion technologies since it is an available source. Therefore, a process for the gasification of poultry litter is examined in this study. This process integrates a fluidised bed gasifier with a gas turbine with the aim of generating combustibles gases for energy production. This resulted in a viable solution for a small scale system to be installed on-site the biomass source. The system allows the treatment of waste with the additional benefit of generation of energy, and is suitable for a poultry farm to avoid the transportation of litter to centralised plants. Among the by-products generated during gasification, such as NOx, SO2, and fly ash, tar is a major issue when implementing this technology because tar can cause operational problems as a result of the possible formation of aerosols and soot formation due to repolymerization. A process simulation using Aspen Plus was used to evaluate four levels of integration. The equilibrium model was applied to evaluate integration schemes involving recuperation of energy from the gas turbine exhaust gases. The recuperation of residual heat to preheat air and product gases was performed with the aim of achieving the highest electrical efficiency. For the conventional "atmospheric layout", the fuel gases have to be cooled down before being compressed to the desire pressure, which causes to waste energy from the hot fuel gases. The benefit of the "pressurised layout" is that all process stages can be maintained hot. Process efficiency analyses showed that even when the "atmospheric layout" was set with energy recuperation, the "pressurised layout" delivered higher efficiencies with or without the energy recuperation into the gasifier. After a bibliographic review, the lignin content of biomass was concluded responsible for tar formation because of its aromatic nature. As lignin components, guaiacol, vanillin and catechol were chosen as tar precursors due to its presence in lignin structure. A reaction mechanism and its corresponding kinetics were derived. This mechanism was based on the three-lignin unit decomposition into lighter molecules and greater aromatic rings. Some of the tar products were involved in combustion and/or steam gasification reactions. The tar reaction mechanism was introduced into the kinetic model for the gasification of poultry litter. The results showed agreement with experimental work from previous reports for the evolution of primary tars. However, the model overestimated the total tar concentration. When the model was compared with the equilibrium model, the trends of the main product gases agreed as the air:fuel ratio was varied.

Made available in DSpace on 2014-06-11T19:24:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-18Bitstream added on 2014-06-13T19:11:15Z : No. of bitstreams: 1 sagula_al_me_botfca.pdf: 646676 bytes, checksum: e48774cd7be5625bb9dfa8d87ec630dd (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Universidade Estadual Paulista (UNESP) / A avicultura brasileira alcançou nos últimos anos níveis de produtividade e ajuste na organização e coordenação que a colocam como uma das mais competitivas do mundo. A cama de frango gerada no processo produtivo das aves demonstra ter grande potencial para a obtenção de energia com o uso de biodigestores. Objetivou-se com a execução deste trabalho avaliar a inclusão de 5 e 7% do caldo de cana de açúcar, no processo de biodigestão anaeróbia da cama de frango com separação de sólidos em sistemas contínuos de abastecimento. O experimento foi dividido em duas fases, sendo que na primeira foi realizado o preparo do inóculo com dejeto de bovino leiteiro e na segunda fase foram abastecidos oito biodigestores contínuos com o inóculo obtido + cama de frango com separação de sólidos (CFCSS), associada ao caldo de cana em diferentes proporções composto por dois tratamentos com quatro repetições. O tratamento T1 – CFCSS (Controle) e tratamento T2 – CFCSS + caldo de cana (5% por um período de 30 dias e 7 % por mais 30 dias). Foram analisados os teores de sólidos totais (ST) e sólidos voláteis (SV), potencial de hidrogênio (pH) e concentrações de micro e macronutrientes. Para os tratamentos... / The Brazilian aviculture productionin in recent years achieved levels of productivity and adjustthe organization and coordination that pose as one of the most competitive in the world.The poultry litter generated in the production process of the birds shows a high potential to produce energy using biodigesters. Objective was to evaluate the inclusion of 5 and 7% of the juice of sugar cane in the process of anaerobic digestion of poultry litter with separation of solids in a continuous system of supply. The experiment was divided into two phases with the first was conducted in the preparation of the inoculums with dairy cattle manure and the second phase were supplied with eight digesters continuous inoculums obtained + poutry litter with separation of solids (PLSS) associated cane juice in different proportions composed of 4 two treatments with four replications. The T1 – PLSS (Control) and T2 PLSS + cane juice (5% for a period of 30 days and 7% for 30 days). We analyzed the levels of total solids (TS) and volatile solids (VS), potential hydrogen (pH) and concentrations of macronutrients and micronutrients. For those treatments evaluated showed that there was a reduction of TS and VS, 66,05 and 74,33% respectively for a control 1. Treatment with 5% sugar cane juice showed a value of 0,5500 m3 of biogas and received sugar cane juice to 7% showed a value of 0,6919 m3 of biogas within 30 days of operation. These results demonstrate that the juice was effective for the methanogenic bacteriadegrade organic mattere expressing great potential for biogas production

Soil quality and health indicators are necessary to monitor and improve the agricultural sustainability. This experiment was conducted at Mississippi State, MS between 2015 and 2016. Soil samples were taken to determine bulk density, enzymatic activity, and total C and N. Results indicated greater bulk density, total C and N, and enzymatic activity for inter-row position than for within the corn row which was disturbed by strip-tillage. Soil bulk density tended to increase with soil depth; however, total C and N and total microbial activity decreased with depth both years. Total soil C and N increased from 2015 to 2016. Enzymatic activity was greatest at corn planting and decreased up thru four weeks apparently due to total C and N decomposition. Total C and N were related to bulk density and enzymatic activity because increase in soil C and N decreased the bulk density and increased the enzymatic activity values.

Considerable concern has developed over the possible pollution from poultry litter storage methods. This study was conducted to evaluate three different storage scenarios; covered stockpiles, uncovered stockpiles, and litter sheds. The stockpiles were monitored over two rainfall simulation events, in both the Ridge and Valley and the Piedmont physiographic provinces, with both surface and subsurface flows analyzed. An observational study, where subsurface water was sampled for a nine-month period was conducted using six litter sheds, three in each of the above provinces. Samples were analyzed for nutrients, fecal coliforms, and solids. Concentrations of NHx, TKN, OP, TP, VSS, and FC in surface runoff from uncovered litter piles were all statistically higher than that from covered piles, with NO3 being the exception. However, increased runoff volumes originating from the covered litter piles caused mass loadings from both covered and uncovered piles to be similar enough that statistical significance was not obtained, except in the case of FC. Soil water samples from litter stockpiles did not show a statistically significant treatment effect for concentration data, but uncovered piles did exhibit higher nitrogen concentration estimates than the covered piles. Sample collection frequency showed a statistically significant increase in the number of samples that could be obtained from the edge lysimeter under uncovered litter piles from the Piedmont experimental site. This result indicates uncovered piles are releasing the precipitation absorbed during the rainfall simulation into the sub-surface environment. In the storage shed study, a greater number of samples were collected per attempt at the Piedmont sheds compared to those at the Ridge and Valley site. While both areas were undergoing a significant drought, Piedmont porous-cup lysimeters yielded samples 63% of the time, compared to 10% for Ridge and Valley lysimeters. Lysimeters located near the edge of the shed were also more likely to yield a sample than those in the center or a background location. Unknown interferences within the litter shed samples prevented three laboratories from obtaining valid nutrient concentrations. / Master of Science

Soil microorganisms are important for the stabilization and preservation of a good soil structure. Management practices can affect the diversity and population of microorganisms, which could beneficially change soil properties and promote a more sustainable dryland system. This study was established near Pontotoc, MS on Atwood silt loam to evaluate the impacts of cover crops and fertilizer sources on selected biologically related soil properties in a no-tillage, dryland soybean system. Soil analyses included total carbon and nitrogen, permanganate oxidizable carbon (POXC), easily extractable glomalin-related soil protein (EE-GRSP), water stable aggregate (WSA) and soil pH. Cover crop biomass and percent groundcover, soybean leaf area index (LAI), plant height, and yield were also determined. Results indicated that fertilizer source did have an impact on total nitrogen, EE-GRSP and soybean yield. A positive impact on soil properties is expected with the use of cover crops if studied for a longer period of time.

Organoarsenic compounds and trace elements are added to poultry feed for disease control and improved productivity. These elements are excreted into poultry litter, which is land applied as fertilizer. This study utilized field and laboratory experiments to address the mobility of arsenic (As) and other litter-derived elements within the Broadkill River watershed, DE, a region of intense poultry production. For the first project, a litter application experiment was conducted at an instrumented field site in Sussex Co., DE. After establishing baseline geochemistry of soil water, ground water, and surface water at the site, poultry litter was then applied, followed by post litter application monitoring. Results showed low concentrations of As and other litter-derived elements in soil water; little impact was measured on ground or surface water. Mass balance calculations suggest that the majority of mass of leached elements was accounted for by uptake in underlying soils. The second project examined the impact of long-term litter application on chemical signatures of As, copper (Cu), zinc (Zn) and phosphorous (P) in stream sediments within the Broadkill River watershed. Sediment samples were collected from both upgradient and downgradient reaches within the watershed. Using GIS to overlay hydrology and land use, statistical relationships between As, Cu, Zn and P enrichment factors and land use were examined. Results did not show a relationship between these elements and agricultural land use, but did show a correlation between some of the elements and residential land use. The third project examined the influence of dissolved organic carbon (DOC) on the mobility of As, Cu, Zn and P using laboratory column experiments with soil from the field site. Two influent solutions were used: poultry litter leachate and a simulated solution of similar element concentrations, pH, and ionic strength but without DOC. Results showed that DOC enhanced the mobility of all four elements, but that even with DOC, 60-70% of the Zn, As and P mass was retained within the soil. Cu was fully mobilized by DOC. Patterns of breakthrough curves (BTCs) and mass calculations suggest that the behavior of these litter-derived elements in the column is controlled by both adsorption (including competitive) to soils and complexation with DOC. / Ph. D.

Nutrient runoff from excess land application of poultry litter in the Chesapeake Bay Watershed has caused damage to the Chesapeake Bay and lead to the need for alternative poultry litter disposal methods. This study provided an economic feasibility analysis of the use of poultry litter as a partial replacement of coal at an electrical generating unit in Virginia's Chesapeake Bay Watershed. Previous research on the feasibility of converting litter to energy failed to include uncertainty in benefit-cost variables, therefore, this study used risk analysis to incorporate variable uncertainty. Project net worth in previous studies was measured under a public investment scenario with risk neutral preferences but did not take into account risk averse preferences common in private investment. This paper compared benefits under both public risk neutral and private risk averse investor preferences. NPV results showed the proposed project to be feasible but sensitive to the acquisition cost of poultry litter, the unit ash value of litter, and future coal price projections. The maximum level of risk aversion required for feasibility increased when expected returns were measured on an investment scale compared to an annual income scale. Poultry litter combustion produced lower levels of NOx and SO₂ emissions compared to coal, therefore, emission allowance trading through the EPA market based trading programs generated additional benefits to the model and increased the maximum level of risk aversion permitted for feasibility. Results suggested the potential to dispose of 110 thousand tons of poultry litter per year from the Chesapeake Bay Watershed without violating EPA emission standards. / Master of Science

Poultry litter ash (PLA) is a co-product from manure-to-energy systems that originated in response to increased poultry litter (PL) volumes generated in concentrated poultry production regions. Investigating PLA as a crop fertilizer is an alternative solution to balancing poultry and crop regional nutrient cycling in the Commonwealth of Virginia. As the expanding world population places pressure on the poultry industry to meet consumption demands, increased PL production presents an obstacle to identify alternative uses for increased volumes. Currently, Virginia produces 44 million broilers with PL produced predominately in the Shenandoah Valley and Eastern Shore. Likewise, a growing world population places pressure on crop production areas and subsequently finite natural resources used for crop fertilization. Poultry litter ash is an alternative phosphorus (P) and potassium (K) source enhancing transportation logistics, repurposing PL nutrients, and offers dual purpose as a fertilizer and an energy source when compared to PL. Three PLA products [(fluidized bed bulk (FB Bulk), fluidized bed fly (FB Fly), and combustion Mix (CMix)], two manufactured co-products [(granulated poultry litter ash (GPLA), and ash coated urea (ACU)] were evaluated as P, K, and N sources for corn (Zea Mays L.) production in comparison to industry fertilizers [(PL, triple superphosphate (TSP), muriate of potash (KCL), and urea). A comprehensive examination of elemental composition, P speciation, P and K solubility, improved functionality into granulized forms, and field testing were conducted to discern PLA potential as an alternative fertilizer source. Poultry litter ash products were evaluated by total elemental analysis, backscatter-electron dispersive (BSED) microscopy, and X-ray absorption near edge structure (XANES) spectroscopy. Poultry litter ash elemental concentrations were highly variable ranging from 50.6 to 102.0 g P kg -1 and 62.6 to 120.0 g K kg -1 and were comparatively higher than PL concentrations. Phosphorus structures that provided and controlled P solubility were Ca and Ca-Mg-phosphate compounds. Spectroscopy confirmed Ca structures as predominately monetite (dicalcium phosphate anhydrous; CaHPO4; log K ̊ 0.30) and brushite (dicalcium phosphate dihydrate; CaHPO4.2H20; 0.63 log K ̊ ) species that were supported by BSED and elemental stoichiometric ratios (Ca:P; 1.12 to 1.71:1). Additionally, GPLA acidified from FB Fly had higher brushite and monetite percentages described by spectra models, translating into a more soluble Ca-phosphate species when compared to FB Fly original P species. Granulated poultry litter acidulation trials successfully identified a desired granulation point of 29% (14.5 g acid to 50 g PLA) phosphoric acid (75% H3PO4) acidulation. Acidulation dose response relationships created simple linear regression (SLR) equations that sufficiently (R2 > 0.80) described changes in total measurable P and water soluble P, pH, and exothermic reaction temperatures to increasing H3PO4 acidulation. Solubility tests included: sequential extraction, particle size effect on solubility, carbon effect on water soluble P, and Mehlich-1 extraction of PLA sources that confirmed decreased P solubility. A majority PLA P was found in bound plant unavailable fractions (87.7 to 97.7% P of total P). Granulated poultry litter ash had improved P plant available P of 36.0% P of total P. Carbon (C) effects on PLA P were examined by ashing PLA samples in a muffle furnace at 550 ̊C. Differences in total carbon content negatively impacted FB Bulk and CMix total P (1.30 and 4.56 g P kg -1); however, muffle furnace temperatures increased FB Fly total P by 6.74 g P kg -1. All fertilizer products were investigated under field conditions in separate P, K and N corn studies across Virginia coastal plain soils to determine fertilizer effects on corn plant parameters [(most mature leaf (V6), corn ear leaf (R1), and grain (R6)]. Poultry litter P treatments, averaged over rate, recorded highest yield in both years. At eight of nine field sites, FB Bulk resulted in numerically or significantly higher Mehlich-1 concentrations than other P sources post-harvest. Although Mehlich-1 P increased, yield and plant parameters did not; which leads to the conclusion that PLA sources increased soil residual P that did not translate into immediate plant availability recorded within a growing season. Across plant efficacy parameters examined, PLA K is a comparable nutrient source and improved plant parameters when compared to control. Eighteen out of twenty-one plant parameters examined found similar ACU and urea effects on N concentrations. Therefore, ACU is a comparable N source to urea. When compared to industry fertilizer sources, we concluded that PLA is a slowly available P source, decreased P availability negatively affected early plant growth, K is a comparable nutrient source and improved plant parameters compared to control, and ACU effectively provided N to maintain sufficient corn growth. In conclusion, PLA co-products serve as a densified nutrient source that may provide plant available nutrients if processed to aid in nutrient distribution to grain producing areas. / Doctor of Philosophy / Poultry litter ash (PLA) is a co-product from manure-to-energy systems that originated in response to increased poultry litter (PL) volumes generated in concentrated poultry production regions. Investigating PLA as an alternative crop fertilizer is essential to balancing poultry and crop regional nutrient cycling in the Commonwealth of Virginia. As the expanding world population places pressure on the poultry industry to meet consumption demands, heightened PL production presents an obstacle to identify alternative uses for increased volumes. Currently, Virginia produces 44,683,904 broilers with PL produced predominately in the Shenandoah Valley and Eastern Shore. Likewise, a growing world population places pressure on crop production areas and subsequently finite natural resources used for fertilization vital to maintaining crop yields. Poultry litter ash, a co-product from manure-to-energy systems, is an alternative phosphorus (P) and potassium (K) source enhancing transportation logistics, repurposing PL nutrients, and offers dual purpose as a fertilizer and an energy source when compared to PL. In this dissertation, three PLA products [(fluidized bed bulk (FB Bulk), fluidized bed fly (FB Fly), and combustion Mix (CMix)], two manufactured co-products [(granulated poultry litter ash (GPLA), and ash coated urea (ACU)] were evaluated as P, K, and N source for corn (Zea Mays L.) production in comparison to industry fertilizers (PL, triple superphosphate (TSP), muriate of potash (KCL), and urea). Each of the following chapters provides a comprehensive examination of the following topics: elemental composition, P speciation, P and K solubility, improved functionality into granulized forms, and field testing designed to provide parameters to conclude PLA potential as an alternative P, K and N source. In the second chapter, PLA products were evaluated by total elemental analysis, backscatter-electron dispersive (BSED) microscopy, and X-ray absorption near edge structure (XANES) spectroscopy. Poultry litter ash elemental concentrations are highly variable and are comparatively higher than PL concentrations. Phosphorus structure and species identified Ca as the primary element controlling P structure and subsequent solubility. The third component of this dissertation is granulation trials investigating phosphoric acid effects on granulizing and increasing total and water soluble P. Our results identified 29% (14.5 g acid to 50 g PLA) phosphoric acid acidulation for desired granule size. The third dissertation component examines PLA solubility. The results demonstrated PLA decreased P water solubility when compared to industry fertilizer sources. Granulated poultry litter ash demonstrated improved P plant availability due to the granulation process. The final and fourth dissertation components investigated PLA sources under field conditions in separate P, K and N corn studies across Virginia coastal plain soils to determine fertilizer effects on corn plant parameters. Minority of plant parameters tested revealed P control yielded numerically higher P concentrations than PLA P sources tested. Poultry litter P treatments, averaged over rate, recorded highest yield in both years. At eight of nine field sites, FB Bulk resulted in numerically or significantly higher Mehlich-1 concentrations than other P sources post-harvest. Although Mehlich-1 P concentrations increased, yield and plant parameters did not; which leads to the conclusion that PLA sources increased soil residual P that did not translate into immediate plant availability recorded within a growing season. Across plant efficacy parameters examined, PLA K is a comparable nutrient source and improved plant parameters when compared to controls. The majority of plant parameters examined found similar ACU and urea effects on N concentrations. Therefore, ACU is a comparable N source to urea. When compared to industry fertilizer sources, field results concluded that PLA is a slowly available P source, decreased P availability negatively affected early plant growth, K is a comparable nutrient source and improve plant parameters compared to control, ACU effectively provides N to maintain sufficient corn growth. In conclusion, PLA co-products serve as a densified nutrient source that may provide plant available nutrients if processed to aid in nutrient distribution to grain producing areas.

Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2016-02-11T07:45:33Z No. of bitstreams: 2 Dissertação - Kassia Cristina de Caldas Rabelo - 2015.pdf: 909725 bytes, checksum: 49655539b088ecd4b4ffccffceb8e7cb (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-02-11T07:47:44Z (GMT) No. of bitstreams: 2 Dissertação - Kassia Cristina de Caldas Rabelo - 2015.pdf: 909725 bytes, checksum: 49655539b088ecd4b4ffccffceb8e7cb (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2016-02-11T07:47:44Z (GMT). No. of bitstreams: 2 Dissertação - Kassia Cristina de Caldas Rabelo - 2015.pdf: 909725 bytes, checksum: 49655539b088ecd4b4ffccffceb8e7cb (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-03-31 / In recent years there was an increase in the diversification of vegetable crops, especially for cultivation in greenhouses and organic fertilizers. The tomato sets one of the most vegetables produced in the world, and its use is justified because it is a food that has great use in industrial and semi-processed products. The use of waste poultry as a source of organic matter into fertilizer, prevents it from becoming a pollutant if handled improperly. To join the inorganic formulas are in organomineral fertilizers, which increase the efficiency of mineral fertilizers, providing reduced spending on fertilizers and promoting the improvement in soil quality. The use of organomineral fertilizer is one of the strategies that provide greater crop yield and better quality. In this context, the aim of this work was to evaluate the efficiency of this granulated organomineral fertilizer enriched with monoammonium phosphate (MAP) in the processing tomato crop. When using the organomineral fertilizer compared to mineral fertilizer, there was a fresh mass increase of fruit, number of fruits per plant and yield. When analyzing the chlorophyll content the growing season proved to be the most appropriate to evaluate your changes in tomato leaves. But at conditions studied, the organomineral fertilizer presented agronomic performance similar to mineral fertilizer. In economic terms is justified the use of this fertilizer for having a lower cost than mineral fertilizers. / Nos últimos anos verificou-se o crescimento da diversificação de cultivos de hortaliças, com destaque para cultivo em ambientes protegidos e as adubações orgânicas. O tomate configura uma das hortaliças mais produzidas no mundo, e seu consumo justifica por ser um alimento funcional e de grande uso em produtos industrializados e semiprontos. A utilização dos resíduos de aves como fonte de matéria orgânica em fertilizantes, evita que este se torne um poluente se manejado inadequadamente. Ao se associarem a fórmulas inorgânicas constituem-se em fertilizantes organominerais, que aumentam a eficiência dos fertilizantes minerais, proporcionando redução de gastos com adubações e promovendo a melhoria na qualidade do solo. O uso da adubação organomineral é uma das estratégias que propiciam maior rendimento da cultura e melhor qualidade. Neste contexto, objetivou-se com este trabalho avaliar a eficiência do fertilizante organomineral granulado enriquecido com fosfato monoamônio (MAP) na cultura do tomate industrial. Quando se utilizou o fertilizante organomineral comparado à adubação mineral, houve um aumento de massa fresca de frutos, número de frutos por planta e produtividade média. Ao se analisar o teor de clorofila a fase vegetativa demonstrou ser a mais indicada para avaliar suas alterações em folhas do tomate. Porém nas condições edafoclimáticas estudadas, o fertilizante organomineral apresentou desempenho agronômico semelhante ao fertilizante mineral. Em termos econômicos justifica-se o uso do fertilizante organomineral por este ter um custo menor que o fertilizante mineral.