CARACTERIZAÇÃO FÍSICO-HÍDRICA DO SOLO APÓS CULTIVOS FERTIRRIGADOS COM ÁGUA RESIDUÁRIA TRATADA

CARACTERIZAÇÃO FÍSICO-HÍDRICA DO SOLO APÓS CULTIVOS FERTIRRIGADOS COM ÁGUA RESIDUÁRIA TRATADA* FERNANDO LOPES GODINHO1; EDSON FAGNE DOS SANTOS2; SILVANIO RODRIGUES DOS SANTOS1, MARCOS KOITI KONDO1; MARFFÍSIA AMARAL RODRIGUES FERREIRA1 1Departamento de Ciências Agrárias, Universidade Estadual de Montes Claros, Rua Reinaldo Viana, 2630, Bico da Pedra, 39440-000, Janaúba, MG, Brasil, [email protected]; [email protected]; [email protected] 2Departamento de Agronomia, Universidade Federal de Viçosa, Avenida P.H Rolfs, S/N. CEP: 36570-900, Viçosa – MG, Brasil, email: [email protected] *Artigo proveniente da dissertação de mestrado do primeiro autor. 1 RESUMO Elevadas cargas de esgoto são destinadas aos corpos d'água no Brasil, podendo essa realidade ser mudada com o emprego de tecnologias para o uso agrícola desse resíduo. Assim, objetivou-se quantificar as mudanças no movimento e retenção de água em Latossolo Vermelho Eutrófico, após cultivo sequencial com a aplicação de água residuária sanitária tratada (ART). Para isso, foram utilizados cinco tratamentos (0= água limpa e adubação mineral; 50%; 100%; 150% e 200% da dose de ART limitada pelo elemento referência K+ nos 3 primeiros cultivos e; 0= água limpa e adubação mineral; 100%; 200%; 300% e 400% da dose de ART limitada pelo elemento referência Na+ no abacaxizeiro), no delineamento em blocos casualizados, com quatro repetições. Observou-se uma diminuição linear de 0,0972 mm h-1, 0,0997 mm h-1 e 0,0073 cm h-1 na taxa de infiltração básica, no tempo de 1,5 h e na condutividade hidráulica, respectivamente, para cada mm de efluente adicionado no solo, além de aumentar a porcentagem de sódio trocável nas profundidades avaliadas. No entanto, tais alterações não ultrapassam os limites considerados seguros pela literatura. Palavras-chave: infiltração; retenção de água; fertirrigação; esgoto sanitário. GODINHO, F. L.; SANTOS, E. F.; SANTOS, S. R.; KONDO, M. K.; FERREIRA, M. A. R. PHYSICAL-HYDRICAL CHARACTERIZATION OF THE SOIL AFTER FERTIRRIGATED CROPS WITH TREATED SANITARY WATER 2 ABSTRACT High sewage loads are still released into water sources in Brazil. This can be changed using technologies that contributes for the use of part of this wastewater in agriculture. This study aimed to evaluate possible changes in the movement and water retention in Eutrophic Red Latosol, after sequential cultivation with the application of treated sanitary wastewater (ART). Five treatments were used (0: clean water and mineral fertilization, 50%, 100%, 150% and 200% of the ART dose limited by the reference element K+ in the first 3 cultivation and 0: clean water and mineral fertilization, 100%, 200%, 300% and 400% of the ART dose, limited by the reference element Na+ in pineapple crops, in a randomized block design with four replications. A linear decrease of 0.0972 mm h-1, 0.0997 mm h-1 and 0.0073 cm h-1, respectively, was observed in the basic infiltration rate, in the time of 1.5 h, and hydraulic conductivity, for each mm effluent increased in the soil; in addition, in the percentage of exchangeable sodium at depths evaluated. However, such changes do not exceed the limits considered safe by the literature. Keywords: infiltration; water retention; fertigation; sanitary sewage; water reuse.

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Cadmium, copper, and chromium levels in maize plants and soil fertilized with sewage sludge

Australian Journal of Crop Science ◽

10.21475/ajcs.20.14.02.p2006 ◽

2020 ◽

pp. 244-249

Author(s):

Iolanda Maria Soares Reis ◽

Suelen Cristina Nunes Alves ◽

Wanderley José de Melo ◽

Laércio Santos Silva ◽

Ludmila de Freitas ◽

...

Keyword(s):

Sewage Sludge ◽

Block Design ◽

Human Consumption ◽

Mineral Fertilization ◽

Metal Concentrations ◽

Aerial Parts ◽

Randomized Block Design ◽

Negative Effect ◽

Red Latosol ◽

Kernel Yield

The use of sewage sludge as fertilizer is a widespread practice. However, the presence of heavy metals and pathogens in sludge are a cause for concern. The objective of this study was to determine the levels of cadmium (Cd), copper (Cu), and chromium (Cr) in leaves, aerial parts, and kernels of maize grown in red latosol that was fertilized with sewage sludge for 15 consecutive years. Metal concentrations in soil and kernel yield were also determined. A randomized block design was used, with five replicates and four treatments: T1, mineral fertilization (control); T2, application of sewage sludge at 5 Mg ha−1; T3, application of sewage sludge at 10 Mg ha−1; and T4, application of sewage sludge at 20 Mg ha−1. All plots received potassium (K) supplementation. Fertilization with sewage sludge was as efficient as mineral fertilization. Sewage sludge had no negative effect on kernel yield. A negative correlation was observed between metal concentrations in soil and plant samples. Cd was detected at ≤0.04 mg kg−1 in kernels and Cu at ≤2.34 mg kg−1, whereas Cr was not detected in any sample. These levels are considered safe for human consumption, according to the Brazilian Health Regulatory Agency. Fertilization with sewage sludge for 15 years did not increase Cu, Cd, and Cr levels in the soil and had no negative effect on maize, which shows the potential of sewage sludge for agricultural use.

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Nutrients demand of cactus forage

10.31220/osf.io/azvq3 ◽

2019 ◽

Author(s):

João Macedo Moreira ◽

Aldrin Martin Pérez-Marin ◽

Jucilene Silva Araújo ◽

George Rodrigues Lambais ◽

Aldo Sales

Keyword(s):

Block Design ◽

Nutrient Utilization ◽

Nutrient Recovery ◽

Fertilizer Treatment ◽

Treatment Control ◽

Mineral Fertilization ◽

Randomized Block Design ◽

Nutrient Use ◽

Different Types ◽

Semi Arid Region

The study aimed to evaluate the efficiency of nutrient use in three cactus forage (CF) cultivars (Opuntia stricta and Nopalea cochenillifera), 365 days after planting under different types of fertilizer in two research sites (Condado and Riachão) of the semi-arid region of Paraiba state, Brazil. The experimental design was a randomized block design with treatments in a factorial scheme (3×4), three cultivars of CF (Orelha de elefante Mexicana; Miúda; Bahiana), and four fertilizer treatment (Control; Manure; Manure with Nitrogen; Mineral fertilization) with four replications. The CF cultivars did not differ significantly in nutrient use. That means of physiological efficiency by CF cultivars were 1.62, and 2.36 kg of biomass per kg of nutrient applied in Condado and Riachão, respectively. The efficiency of nutrient recovery was 16% for the Condado, according the following order: K> P> Ca> N> C = Mg and 12% for Riachão: K> P> N> C = Ca = Mg. In the two research sites, the treatment with mineral fertilization significantly increased the efficiency use of N, P and K in comparison to the other treatments. The average for efficiency of nutrient utilization was 25% and 19% for Condado and Riachão, respectively, in the following order for Condado: K> P> N> Ca = Mg> C, and Riachão: K> P> N> C> Mg = Ca. In a CF production system aiming to obtain a yearly harvest cycle, it is necessary to replenish of K and P to maintain the nutritional balance between the soil and CF plant.

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Cowpea bean production under water stress using hydrogels

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632016v4743398 ◽

2017 ◽

Vol 47 (1) ◽

pp. 87-92 ◽

Cited By ~ 4

Author(s):

Marília Barcelos Souza Lopes ◽

Taynar Coelho de Oliveira Tavares ◽

Danilo Alves Veloso ◽

Niléia Cristina da Silva ◽

Rodrigo Ribeiro Fidelis

Keyword(s):

Water Stress ◽

Water Use ◽

Food Production ◽

Water Retention ◽

Block Design ◽

Population Increase ◽

Water Retention Capacity ◽

Yield Losses ◽

Retention Capacity ◽

Randomized Block Design

ABSTRACT The population increase and the need of intensifying food production, coupled with the scarcity of water resources, have led to the search of alternatives that reduce consumption and optimize the water use during cultivation. In this context, hydrogels become a strategy in agricultural management, due to their water retention capacity in the soil and availability to plants. This study aimed at evaluating the efficiency of hydrogels on the development and production of cowpea bean ('Sempre-verde' cultivar) under water stress, in a greenhouse. The experiment was performed in a randomized block design, with five replications, in a 4 x 5 factorial scheme, consisting of four types of hydrogel (Hydroplan-EB HyA, with granulometry of 1-3 mm; Hydroplan-EB HyB, with granulometry of 0.5-1 mm; Hydroplan-EB HyC, with granulometry < 0.5 mm; Polim-Agri, with granulometry of 1-0.5 mm) and five concentrations (0 g pot-1; 1.5 g pot-1; 3 g pot-1; 4.5 g pot-1; 6 g pot-1). The following traits were evaluated: number of pods per plant, number of grains per pod and grain yield. The highest concentration (6 g pot-1) resulted in a higher number of pods and yield for all the hydrogels, especially for HyC and Polim-Agro, which presented 7.4 pods plant-1 and 7.0 pods plant-1, with yield of 15.43 g plant-1 and 16.68 g plant-1, respectively. The use of hydrogel shows to be efficient for reducing yield losses under water stress.

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Pig slurry as a nutrient source in wheat/corn succession

Revista CERES ◽

10.1590/0034-737x201663030019 ◽

2016 ◽

Vol 63 (3) ◽

pp. 412-418 ◽

Cited By ~ 1

Author(s):

Claudir José Basso ◽

Marlo Adriano Bison Pinto ◽

Antônio Luis Santi ◽

Rodrigo Ferreira da Silva ◽

Diecson Ruy Orsolin da Silva

Keyword(s):

Grain Yield ◽

Block Design ◽

Pig Slurry ◽

Nutrient Source ◽

Mineral Fertilization ◽

Adequate Supply ◽

Randomized Block Design ◽

Efficient Alternative ◽

Crop Succession ◽

Npk Fertilization

ABSTRACT Wheat and corn are important grains in the agricultural scenario of Brazil, and demand adequate supply of nutrients, particularly nitrogen, in crop succession. The use of pig slurry (PS) as a full and/or partial alternative to mineral fertilization in crop areas has been identified as an important alternative for the disposal of this waste. Therefore, the objective of this study was to evaluate the utilization of PS as fertilizer in wheat/corn succession under some plant parameters and grain yield. The experiment was conducted under field in randomized block design with four replications and five treatments, three with PS (40, 80, 160 m³ ha-1) and two controls (no fertilization and mineral NPK fertilization), which were applied manually in the soil shortly after sowing the crops. The application of PS proved to be a significant source of nutrients in wheat/corn succession. In comparison to NPK fertilization, this increase was only of 5.4% and 4.7% for wheat and corn, respectively. PS is an efficient alternative and it can be used as a source of these nutrients in wheat/corn succession, and the use of 80 m3ha-1 provides satisfactory results for all evaluated variables.

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USE OF S-INDEX AS A STRUCTURAL QUALITY INDICATOR FOR COMPACTED LATOSOLS CULTIVATED WITH MAIZE

Revista Caatinga ◽

10.1590/1983-21252018v31n222rc ◽

2018 ◽

Vol 31 (2) ◽

pp. 455-465 ◽

Cited By ~ 2

Author(s):

KARINA DE VARES ROSSETTI ◽

JOSÉ FREDERICO CENTURION

Keyword(s):

Block Design ◽

Conventional Tillage ◽

Water Retention Curve ◽

Structural Quality ◽

Retention Curve ◽

Soil Layers ◽

Randomized Block Design ◽

Physical Attributes ◽

Red Latosol

ABSTRACT One way to prevent soil degradation is to monitor its structural quality through physical attributes and indicators. Thus, the objective of this work was to identify parameters that can be used together with the S-index to assess the soil structural quality of Latosols-Distrophic Red Latosol (DRL) and Eutroferric Red Latosol (ERL)-cultivated with maize after traffic-induced compaction by agricultural machinery. The experiment was conducted in a randomized block design in split-plots, with five treatments and four replications for each soil class. The treatments were: T0 = conventional tillage without additional compaction; T1, T2 and T3 = one pass of a 4, 7 and 10-Mg tractor, respectively; T4 = three passes of a 10-Mg tractor. The water retention curve, density, porosity and S-index of the soil layers 0-0.1, 0.1-0.2 and 0.2-0.3 m were evaluated. The DRL presented similar S-index (0.035 to 0.037) in the T0, T1 and T2, and these S-index were connected to soil macroporosity. Most S-index of the ERL were above 0.035, except for T4 due to its higher soil density. The S-index can be used as a complementary parameter for maize height and soil macroporosity to evaluate the structural quality of DRL.

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Initial growth of Schizolobium parahybae in Brazilian Cerrado soil under liming and mineral fertilization

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n10p908-912 ◽

2016 ◽

Vol 20 (10) ◽

pp. 908-912 ◽

Cited By ~ 3

Author(s):

Ademilson Coneglian ◽

Pedro H. P. Ribeiro ◽

Bruno S. Melo ◽

Rennan F. Pereira ◽

Joáz Dorneles Junior

Keyword(s):

Block Design ◽

Market Potential ◽

Initial Growth ◽

Brazilian Cerrado ◽

Mineral Fertilization ◽

Randomized Block Design ◽

Root Shoot Ratio ◽

Soil Liming ◽

Number Of Leaves ◽

Soil Fertilizer

ABSTRACT High prices and the scarcity of hardwoods require the use of alternative wood sources, such as the Guapuruvu (Schizolobium parahybae), an arboreal species native to the Atlantic Forest, which has fast growth and high market potential. However, there is no information on its cultivation in the Brazilian Cerrado. Thus, this study aimed to analyze the contribution of mineral fertilization and liming in a Cerrado soil on the initial growth of Schizolobium parahybae. The experiment was set in a randomized block design, with 4 treatments (Cerrado soil; soil + liming; soil + fertilizer; and soil + fertilizer + liming) and 15 replicates. The following variables were analyzed: plant height, stem diameter, number of leaves, total, shoot, leaf, root and stem dry matter, and root/shoot ratio. The obtained data were subjected to the analysis of variance, Tukey test and regression analysis. During the initial growth, Schizolobium parahybae can be cultivated in a Brazilian Cerrado soil only under mineral fertilization, with no need for soil liming.

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MACRONUTRIENTS ABSORPTION AND DRY MATTER ACCUMULATION IN GRAIN SORGHUM

Revista Brasileira de Milho e Sorgo ◽

10.18512/1980-6477/rbms.v17n1p15-26 ◽

2018 ◽

Vol 17 (1) ◽

pp. 15

Author(s):

IRAN DIAS BORGES ◽

ELAINE CRISTINA TEIXEIRA ◽

LORENA MARTINS BRANDÃO ◽

ANTÔNIO AUGUSTO NOGUEIRA FRANCO ◽

MARCOS KOITI KONDO ◽

...

Keyword(s):

Sorghum Bicolor ◽

Dry Matter ◽

Sandy Loam ◽

Block Design ◽

Grain Sorghum ◽

Semiarid Region ◽

Dry Matter Accumulation ◽

Sigmoidal Function ◽

Randomized Block Design ◽

Red Latosol

ABSTRACT - The present study aimed to determine the curves of macronutrients and dry matter accumulation in grain sorghum DKB 599, grown in a semiarid region. A field experiment was conducted on a sandy loam eutrophic red Latosol (Oxisol) in Janaúba, State of Minas Gerais (MG), Brazil, in a randomized block design with four replications. As statistical method, a nonlinear regression, sigmoidal function with three parameters was used. After drying, the plants were weighed and ground to determine N, P, K, Ca, Mg and S concentration. Grain sorghum plants accumulate nutrients in their shoots in the following order: N> K> Ca> P> Mg> S. The highest concentrations of K and N were observed in stems and grains, respectively. In the conditions of this experiment, the most favorable time to perform nitrogen and potassium topdressing fertilization is when the plants present seven fully expanded leaves or 24 days after the emergency (DAE). Keywords: fertilization, growth, nutrition, Sorghum bicolor. ABSORÇÃO DE MACRONUTRIENTES E ACÚMULO DE MATÉRIA SECA NO SORGO GRANÍFERO RESUMO - Este trabalho teve como objetivo determinar as curvas de acúmulo de matéria seca e macronutrientes no sorgo DKB 599 cultivado em região semiárida. O experimento foi conduzido em campo sobre um Latossolo Vermelho eutrófico, de textura franco-argilosa, no município de Janaúba-MG, Brasil, em delineamento experimental de blocos casualizados, com quatro repetições. Utilizou-se o modelo de regressão não linear, função sigmoidal com três parâmetros como método estatístico. Após secagem, cada parte da planta foi pesada e moída para, em seguida, determinarem-se os teores de N, P, K, Ca, Mg e S. As plantas de sorgo granífero acumulam nutrientes em sua parte aérea na seguinte ordem: N > K > Ca > P > Mg > S. As maiores concentrações de K e N foram observadas, respectivamente, nos caules e nos grãos. Nas condições de condução do experimento, a época mais propícia para realizar a adubação nitrogenada e potássica em cobertura é quando as plantas apresentam sete folhas totalmente expandidas ou 24 dias após a emergência (DAE). Palavras-chave: fertilização, crescimento, nutrição, Sorghum bicolor.

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Nitrogen dynamics in soil management systems. I - flux of inorganic nitrogen (NH4+ and NO3-)

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832011000500018 ◽

2011 ◽

Vol 35 (5) ◽

pp. 1641-1649

Author(s):

João Carlos de Moraes Sá ◽

Eduardo Garcia Cardoso ◽

Clever Briedis ◽

Ademir de Oliveira Ferreira ◽

Paulo Rogério Borszowskei ◽

...

Keyword(s):

Inorganic Nitrogen ◽

Block Design ◽

Soil Management ◽

Conventional Tillage ◽

Management Systems ◽

No Tillage ◽

Organic C ◽

Randomized Block Design ◽

Ct System ◽

Red Latosol

In agricultural systems the N-NH4+ and N-NO3- contents is significantly affected by soil management. This study investigated the dynamics of inorganic nitrogen (N; NH4+ and NO3-) in an experimental evaluation of soil management systems (SMSs) adopted in 1988 at the experimental station of the ABC Foundation in Ponta Grossa, in the Central South region of the State of Paraná. The objective of this study was to evaluate the changes in N-NH4+ and N-NO3- flux in the surface layer of a Red Latosol arising from SMSs over a 12-month period. The experiment was arranged in a completely randomized block design in split plots, in three replications. The plots consisted of the following SMSs: 1) conventional tillage (CT); 2) minimum tillage (MT); 3) no-tillage with chisel plow every three years (NT CH); and 4) continuous no-tillage (CNT). To evaluate the dynamics of inorganic N, the subplots represented samplings (11 sampling times, T1 - T11). The ammonium N (N-NH4+) and nitric N (N-NO3-) contents were higher in systems with reduced tillage (MT and NT CH) and without tillage (CNT) than in the CT system. In the period from October 2003 to February 2004, the N-NH4+ was higher than the N-NO3- soil content. Conversely, in the period from May 2004 to July 2004, the N-NO3- was higher than the N-NH4+ content. The greatest fluctuation in the N-NH4+ and N-NO3- contents occurred in the 0-2.5 cm layer, and the highest peak in the N-NH4+ and N-NO3- concentrations occurred after the surface application of N. Both N-NH4+ and N-NO3- were strongly correlated with the soil organic C content, which indicated that these properties vary together in the system.

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EFEITO DE NÍVEIS DE COBERTURA DO SOLO SOBRE O MANEJO DA IRRIGAÇÃO DO FEIJOEIRO (Phaseolus vulgaris L.)

Irriga ◽

10.15809/irriga.2002v7n1p42-52 ◽

2018 ◽

Vol 7 (1) ◽

pp. 42-52

Author(s):

Ana Lucia Pereira ◽

José Aloisio Alves Moreira ◽

Antonio Evaldo Klar

Keyword(s):

Phaseolus Vulgaris ◽

Common Bean ◽

Irrigation System ◽

Block Design ◽

Irrigation Management ◽

Phaseolus Vulgaris L ◽

Randomized Block Design ◽

Bean Yield ◽

Red Latosol ◽

Set Up

EFEITO DE NÍVEIS DE COBERTURA DO SOLO SOBRE O MANEJO DA IRRIGAÇÃO DO FEIJOEIRO (Phaseolus vulgaris L.) Ana Lúcia PereiraAGENCIARURAL - Campo Experimental de Rio Verde, Rua do Ginásio, 554, Centro,CEP 75.901-210- Rio Verde, GOJosé Aloísio Alves MoreiraEmbrapa Arroz e Feijão, Cx. Postal 179, CEP 74001-970 – Goiânia, GOAntônio Evaldo Klar*Dept o de Eng. Rural – FCA-UNESP, Cx. Postal 237, CEP 18603-970 – Botucatu, SP*Pesquisador Científico do CNPq 1 RESUMO Este trabalho teve por objetivo estudar os efeitos da cobertura do solo sobre o manejo da irrigação do feijoeiro (Phaseolus vulgaris L.). Os tratamentos constaram de diferentes níveis de cobertura morta com palhada de capim braquiária (Brachiaria decumbens), obedecendo delineamento experimental de blocos ao acaso com quatro repetições para os seguintes tratamentos: 0% (0 t/ha), 25% (2,25 t/ha), 50% (4,50 t/ha), 75% (6,75 t/ha) e 100% (9,0 t/ha). O experimento foi conduzido na Embrapa Arroz e Feijão, no município de Santo Antonio de Goiás, GO, a 16° 28’ 00” de latitude sul, 49° 17’00” de longitude oeste e 823 m de altitude, num Latossolo Vermelho escuro argiloso, durante o período de junho a setembro de 1997. O manejo da irrigação por microaspersão foi realizado utilizando tensiômetro e a curva característica de água no solo, irrigando toda vez que tensão matricial da água do solo atingia 30 kPa. A análise dos resultados mostrou diminuição do número de irrigações e aumento do turno de rega nos tratamentos onde a cobertura atingiu mais de 50% da superfície do solo. Os valores médios da tensão da água do solo nos tratamentos com 0,25 e 50% apresentaram maior variação (turno de rega menor). A cobertura do solo propiciou maior eficiência do uso da água.A produção de grãos foi avaliada não havendo diferença de produtividade entre os tratamentos de cobertura morta. UNITERMOS: Cobertura do solo, Irrigação, Phaseolus vulgaris L. PEREIRA, A. L.; MOREIRA , J. A. A.; KLAR, A. E. THE EFFECTS OF MULCH ON IRRIGATION MANAGEMENT OF COMMON BEAN (Phaseolus vulgaris L.) 2 ABSTRACT The aim of this study was to evaluate the effects of mulch on irrigation management of common bean (Phaseolus vulgaris L.). The randomized block design with four replications was applied on five mulch rates: 0% (0 t/ha), 25% (2,25 t/ha), 50% (4,5 t/ha), 75% (6,75 t/ha) and 100% (9,0 t/ha).The study was set up at the Experimental Station of Embrapa – CNAF, Santo Antonio de Goias, 16°2’ south, 49° 17’ west and 820 m altitude from June to September, 1997 in a Dark – Red Latosol soil. A microsprinkle irrigation system was used.The results showed: - bean yield was not affected by mulch treatments; - the irrigation number was decreased when mulch application was higher than 50%. KEYWORDS: mulch, irrigation, Phaseolus vulgaris L.

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Productivity and quality of Mombasa grass under fertilization with pig deep-litter and NPK

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v24n7p437-443 ◽

2020 ◽

Vol 24 (7) ◽

pp. 437-443

Author(s):

Marina da C. Guerrero ◽

Tiago R. de Sousa ◽

Saulo A. de Oliveira ◽

Rômulo R. Caldeira ◽

Adilson Pelá

Keyword(s):

Block Design ◽

Organic Fertilizer ◽

Dry Mass ◽

Point Of View ◽

Neutral Detergent Fiber ◽

Mineral Fertilizers ◽

Panicum Maximum ◽

Mineral Fertilization ◽

Economic Point ◽

Randomized Block Design

ABSTRACT The use of pig deep-litter (PDL) in pasture fertilization can be an important alternative from an environmental and economic point of view. This study was conducted to evaluate the fertilization with PDL exclusively or in association with mineral fertilizers on the quality and productivity of Panicum maximum cv. Mombasa. The experiment was carried out in Ipameri, GO, Brazil. The design was a randomized block design in a 2 x 5 factorial scheme with four repetitions, in plots of 24 m². The doses of PDL (0; 5; 10; 15 and 20 Mg ha-1) were tested, with or without fertilization with NPK (50 kg ha-1 of P2O5, 10 kg ha-1 of K2O and 10 kg ha-1 of N). The organic fertilizer was applied broadcast at the planting of the pasture, and the mineral fertilizers were split and applied at planting and as topdressing. Dry mass, crude protein, acid detergent fiber and neutral detergent fiber were evaluated. PDL doses associated with mineral fertilization led to linear increases from 52 to 282% in the analyzed variables and better bromatological composition. PDL application is beneficial to the production of pastures, and increasing applications up to the PDL dose of 20 Mg ha-1 associated with mineral fertilization promoted better quantitative and qualitative results. With exclusive fertilization with PDL, the gains in quality and productivity were more modest.

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