Produção de biomassa e cobertura do solo pelo consórcio de crotalária e milheto e sua influência em propriedades físicas dos solo

O objetivo neste trabalho foi avaliar a cobertura do solo proporcionada pela crotalária e milheto consorciados em diferentes proporções, bem como seus efeitos na qualidade física do solo. A instalação do experimento obedeceu ao delineamento em blocos casualizados. Os tratamentos foram constituídos de crotalária (Crotalaria spectabilis ) (CR) e milheto (Pennisetum glaucum L. ) (MI) consorciados em diferentes proporções de semeadura, totalizando seis tratamentos: 100% CR (crotalária solteira); 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 20% CR + 80% MI; 100% MI (milheto solteiro), com quatro repetições. As variáveis avaliadas foram a biomassa seca aos 118 dias após a semeadura, a porcentagem de cobertura do solo e umidade do solo aos 30, 60, 90 e 120 dias após o manejo das plantas, a resistência a penetração até 40 cm e densidade do solo na camada de 0-10. Aos 118 dias após a semeadura, a crotalária, o milheto e seus consórcios produziram quantidade de biomassa seca suficiente para promover a cobertura do solo de em média 77% até os 120 dias após o manejo das plantas, contudo não foram capazes de promover diferenças nos atributos físicos do solo. Palavras-chave: Física do solo. Palhada. Sistema de plantas de cobertura. Biomass production and soil coverage by the crotalary and millette consortium and its influence on physical properties AbstractThe aim of this work was to evaluate the soil cover provided by crotalaria and millet intercropped in different proportions, as well as their effects on the physical quality of the soil. The installation of the experiment followed the randomized block design. The treatments consisted of crotalary (Crotalaria spectabilis) (CR) and millet (Pennisetum glaucum L.) (MI) intercropped in different sowing proportions, totaling 6 treatments: 100% CR (single crotalary); 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 20% CR + 80% MI; 100% MI (single millet), with 4 repetitions. The variables evaluated were dry biomass at 118 days after sowing, the percentage of soil cover and soil moisture at 30, 60, 90 and 120 days after plant management, the resistance to penetration up to 40 cm and soil density in the 0-10 layer. At 118 days after sowing the crotalary, the millet and their intercropping produced enough dry biomass to promote an average 77% soil cover until 120 days after plant management, however, they were unable to promote differences in the physical attributes of the soil. Keywords: Soil physics. Straw. Cover plants system.

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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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Quality of organically produced bell pepper seeds

Journal of Seed Science ◽

10.1590/2317-1545v39n2159173 ◽

2017 ◽

Vol 39 (2) ◽

pp. 100-105 ◽

Cited By ~ 1

Author(s):

José Luiz Nogueira ◽

Bruna Ariane da Silva ◽

Átila Francisco Mógor ◽

Camila Ribeiro de Souza Grzybowski ◽

Maristela Panobianco

Keyword(s):

Block Design ◽

Seedling Emergence ◽

Germination Percentage ◽

Bell Pepper ◽

Plant Management ◽

Ripening Stage ◽

Seed Moisture Content ◽

Organic System ◽

Randomized Block Design

Abstract: The production of bell pepper seeds may be affected by the plant management and harvesting point of fruits. The goal of this study was to evaluate the quality of organically produced bell pepper seeds according to free plant growth, branch thinning and ripening stage. The experiment was conducted in a greenhouse with randomized block design; plants were tutored to parallel tape supports, with and without branch thinning, and fruits were harvested at three ripening stages (completely green, green/reddish and red). The following determinations were made: seed moisture content of at the time of harvest and after post-harvest rest, number of seeds per fruit, seed germination, and seedling emergence. It is possible to conclude that the production of bell pepper seeds in an organic system is viable, resulting in seeds with a germination percentage and seedling emergence above 90%. The management system of plants without branch thinning results in the production of seeds with greater viability and higher quantity per fruit. The cultivation of bell peppers for seed production may be carried out with fruits at the green ripening stage (51 days after anthesis), without any quality loss.

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Soil mulch in control of soil temperature and incidence of weeds in the production of crisphead lettuce

Research Society and Development ◽

10.33448/rsd-v9i11.9729 ◽

2020 ◽

Vol 9 (11) ◽

pp. e1869119729

Author(s):

Deisy Lúcia Cardoso ◽

Denise Renata Pedrinho ◽

Giselle Feliciani Barbosa ◽

Wolff Camargo Marques Filho ◽

José Antônio Maior Bono ◽

...

Keyword(s):

Soil Temperature ◽

Pennisetum Glaucum ◽

Block Design ◽

Control Treatment ◽

Soil P ◽

Brachiaria Ruziziensis ◽

Avena Strigosa ◽

Randomized Block Design ◽

Different Types

It was evaluated the effects of different types of mulching of soil in the cultivation of crisphead lettuce (Lactuca sativa L.), cultivar “Lucy Brown”, in the spring period, on weed control, soil temperature and productivity. The experiment was arranged in a randomized block design with four treatments and five replications in plots of 14.0m2. The following coverages were studied: Pennisetum glaucum L., Avena strigosa, Brachiaria ruziziensis, plus the control treatment (soil without mulching). The use of mulching of soil, P. glaucum and B. ruziziensis, proved to be a beneficial practice, reducing the soil temperature by up to 5ºC. There was a lower incidence of weeds with the use of the P. glaucum and A. strigosa coverages. The use of mulch did not provide a significant gain in productivity, however, there was a gain regarding the quality of the product, since the coverage with P. glaucum provided an increase in the size of the head (fresh mass of the commercial head).

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Cover crops and residual effect of lime and gypsum on soil subsurface physical attributes

Research Society and Development ◽

10.33448/rsd-v9i6.3490 ◽

2020 ◽

Vol 9 (6) ◽

pp. e143963490

Author(s):

Marcela Pacola Oliveira ◽

Cassiano Garcia Roque ◽

Gabriel Luiz Piati ◽

Othon Lauar Godinho ◽

Paulo Eduardo Teodoro

Keyword(s):

Cover Crops ◽

Pennisetum Glaucum ◽

Block Design ◽

Residual Effect ◽

Total Porosity ◽

No Tillage ◽

Mato Grosso ◽

Randomized Block Design ◽

Tillage System ◽

Physical Attributes

The use of lime, gypsum, and different cover crops may influence the soil physical attributes, the formation of soil coverage before the crop implantation is crucial for the consolidation of the No-Tillage System. This work aimed to evaluate the alterations in the subsoil physical attributes, influenced by different cover crops combined with the application of lime and gypsum, in a no-tillage system in the Cerrado region, the soil of the experiment area was classified as Dystrophic Red Latosol. The experiment was carried out in Chapadão do Sul, state of Mato Grosso do Sul, Brazil, in a complete randomized block design, in a split-plot scheme. Plots consisted of cover crops (Urochloa ruziziensis and Pennisetum glaucum) and fallow; the subplots were formed by gypsum rates (0, 2.3, and 4.6 Mg ha-1); and the sub-sub-plots consisted of lime rates (0, 2, 4, and 6 Mg ha-1), with three replications. The cover crops, Uruchloa ruziziensis, Pennisetum glaucum and the rates of limestone and gypsum do not interfere with the density of the soil. The Uruchloa ruziziensis cover crop provides increased microporosity and total soil porosity. The cover crops Uruchloa ruziziensis and Pennisetum glaucum were not efficient in decompressing the soil in the layers of 0.20 - 0.30 and 0.30 - 0.40 m in depth. The residual effect of the lime rate of 2 Mg ha-1 without gypsum application provided higher total porosity the 0.30 - 0.40 m layer.

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BIOLOGICAL FERTILIZER AND COVER PLANTS ON SOIL ATTRIBUTES AND MAIZE YIELD

Revista Caatinga ◽

10.1590/1983-21252019v32n315rc ◽

2019 ◽

Vol 32 (3) ◽

pp. 709-718

Author(s):

JOÃO PAULO ASCARI ◽

DEJÂNIA VIEIRA DE ARAÚJO ◽

INÊS ROEDER NOGUEIRA MENDES ◽

RIVANILDO DALLACORT ◽

LEOPOLDO SUSSUMU MATSUMOTO

Keyword(s):

Soil Cover ◽

Pennisetum Glaucum ◽

Block Design ◽

Microbiological Quality ◽

Maize Yield ◽

Forest Fragment ◽

Maize Seeds ◽

Randomized Block Design ◽

Double Factorial ◽

Biological Fertilizer

ABSTRACT Maize is an important crop for Brazil's economy. This species is, in general, grown as monoculture, making it necessary the use of conservationist practices for soil management and to favor crop development. The objective of this study was to evaluate the effects of biological fertilizer and cover plants on soil properties and maize yield. The experiment was conducted in a dystrophic Latossolo Vermelho (Oxisol), in the 2015-2016 and 2016-2017 crop seasons in Tangará da Serra, MT, Brazil. The experiment was conducted in a randomized block design, using a double factorial arrangement with an additional control: two biological fertilizer conditions, three soil cover conditions, and a control (forest fragment). Seeds of Pennisetum glaucum and Crotalaria ochroleuca were sowed on October 2015 and 2016. Maize seeds were sowed on December 2015 and 2016, with subsequent application of 150 L ha-1 of biological fertilizer. The soil cultivated with maize had greater chemical quality than that under the forest fragment, however, the forest fragment soil had greater microbiological quality. The use of biological fertilizer and cover plants increased the fertility and microbiological quality of the soil cultivated with maize. The use of cover plants increased the maize yield in both crop seasons. The use of biological fertilizer and soil cover plants (P. glaucum and C. ochroleuca) improved the soil chemical and microbiological quality.

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Mass and nutritional quality of upper and lower strata of tropical forages

Semina Ciências Agrárias ◽

10.5433/1679-0359.2016v37n4supl1p2725 ◽

2016 ◽

Vol 37 (4Supl1) ◽

pp. 2725

Author(s):

Mailson Poczynek ◽

Mikael Neumann ◽

Egon Henrique Horst ◽

Bruno José Venancio ◽

Danúbia Nogueira Figueira ◽

...

Keyword(s):

Nutritional Quality ◽

Block Design ◽

Growth Dynamics ◽

Ash Content ◽

Perennial Grasses ◽

Chemical Characteristics ◽

High Productivity ◽

Randomized Block Design ◽

Dry Biomass

The goal of this work was to evaluate the growth dynamics and chemical characteristics of the upper and lower strata of summer perennial grasses under a four cuts system. The experiment was conducted in a randomized block design, composed of 28 treatments in a factorial arrangement of 7x4, with four repetitions. The cultivars evaluated were Star Grass, Coast-cross, Tifton 68, Tifton 85, Jiggs, Roxinha and Quicuio. Each cultivar was cut when it reached 95% light interception. The cultivars Jiggs and Tifton 68 had the highest (P < 0.05) accumulation of dry biomass ha-1 during the four cuts, with productions of 21,348 and 21,016 kg ha-1, respectively. The ash content varied (P < 0.05) among species and times of cutting for both strata. Cellulose contents were significantly different in the upper stratum, with the highest concentrations found in cvs. Quicuio and Tifton 68 (39.12% and 38.07%, respectively). We found the highest levels of lignin (P < 0.05), for both strata, in cv. Quicuio. Cultivars Jiggs and Tifton 68 were the most appropriate for a management system of four cuts, displaying good chemical composition and high productivity.

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Productivity, profitability and nutritional quality of forage and silage of winter cereals

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n3p1275 ◽

2019 ◽

Vol 40 (3) ◽

pp. 1275

Author(s):

Mikael Neumann ◽

André Dochwat ◽

Egon Henrique Horst ◽

Bruno Jose Venancio ◽

Jony Cley Santos ◽

...

Keyword(s):

Nutritional Quality ◽

Block Design ◽

Nutritional Composition ◽

The Other ◽

Winter Cereals ◽

Randomized Block Design ◽

Aerobic Stability ◽

Dry Biomass ◽

Silage Production

This study aimed to evaluate the production, the physical and nutritional composition of forage and silage, as well as the profitability and aerobic stability of different winter cereals harvested at the stage of floury grain. The experimental design was a 2x7 factorial randomized block design, with two forms of foods (fresh forage and silage) and seven genotypes, with four replications. The genotypes used were the white oat (Avena sativa) cv. URS Taura; barley (Hordeum vulgare) cv. BRS Brau and cv. BRS Cauê; wheat (Tricticum aestivum) cv. CD 1440; rye (Secale cereal) cv. BR 01; and triticale (X Triticosecale) cv. IPR 111 and cv. BRS Saturno. The materials were harvested during the stage of floury grain. In forage evaluation, rye showed the highest (P < 0,05) dry biomass production (7,100 kg ha-1), but with a higher percentage of stem (46.7%) in dry matter, implying higher ADF (44.69%) in relation to other cereals. The forage of the white oats cv. URS Taura and triticale cv. IPR 111 provided the best nutritional quality compared to the other evaluated cereals, but in the resulting silage, only triticale remained with forage-like characteristics. It was clear the superiority of barley cv. BRS Cauê, wheat cv. CD 1440 and rye cv. BR 01 regarding the maintenance of aerobic stability (160 hours), while the other silages lost their stability within 32 hours. Rye cv. BR 01 and triticale IPR 111 presented the highest production of recovered dry biomass (5,402 and 5,352 kg ha-1 respectively), barley cv. BRS Cauê and oat URS Taura provided higher cost of production per kg-1 dry biomass, both with R$ 0.29 and higher cost per kg of recovered dry biomass R$ 0.45 and 0.37 respectively. There are several factors to consider when choosing the winter species for silage production, and future studies can fully elucidate these factors.

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Kualitas Semen Cair Kambing Boer Berbahan Pengencer Air Kelapa Muda Varietas Viridis Setelah Simpan Dingin

Jurnal Ilmu dan Teknologi Peternakan Tropis ◽

10.33772/jitro.v6i1.5449 ◽

2019 ◽

Vol 6 (1) ◽

pp. 78

Author(s):

Muhammad Ade Salim ◽

Muhammad Nur Ihsan ◽

Nur Isnaini ◽

Trinil Susilawati

Keyword(s):

Semen Quality ◽

Block Design ◽

Animal Husbandry ◽

Egg Yolk ◽

Coconut Water ◽

Boer Goat ◽

Randomized Block Design ◽

Frozen Semen ◽

Artificial Vagina

ABSTRAKAir kelapa muda varietas viridisdapat dijadikan pengencer aletrnatif semen cair bagi program IB di daerah minim sarana semen beku. Tujuan penelitian ini untuk menguji pengaruh penggunaan air kelapa muda viridissebagai bahan pengencer terhadap kualitas semen cair kambing Boer setelah didinginkan. Dilaksanakanselama 3 bulan di Laboratorium Fakultas Peternakan UBUnit SumberSekar,Malang. Metodenya yaitu eksperimen. Semen dari 3 pejantan Boer umur 3-5 tahun, dikoleksi seminggu sekali dengan VB. Air kelapa mudaviridis umur 5-7 bulan serta tris aminomethane sebagai kontrol. Didesain menggunakan Rancangan Acak Kelompok (RAK) dengan 2 perlakuan yaitu P0 (tris aminomethane + 10% KT) dan P1 (air kelapa muda viridis + 10% KT) masing-masing diulang 10 kali. Data dianalisis dengan analisis Ragam (Anova) dengan software Genstat 18. Variabelnya yaitu motilitas individu, viabilitas dan abnormalitas. Hasil penelitian yaitu motilitas individu pada P1bertahan sampai 4 hari (40,5± 24,3%), viabilitas terbaik sampai hari ke-5 (42±24,6%), abnormalitas terendah di hari ke-7(1,31± 0,6). Kesimpulannya, Pengencer air kelapa muda viridis dapat mempertahankan kualitas semen cair kambing Boer selama 4 hari untuk motilitas dan 5 hari untuk viabilitas.Kata Kunci:pengencer, air kelapa, varietas viridisABSTRACTYoung viridis coconut water could be used as an alternative to liquid semen diluent for artificial insemination program in the area with limited facility for frozen semen production. This study evaluated the use of young coconut water as a diluent on liquid semen quality of Boer goat after cold storage. This study was carried out for 3 months at Sumber Sekar Laboratory, Faculty of Animal Husbandry, University of Brawijaya, Malang. The semen was collected from 3 Boer bucks aged at 3 to 5 years old. The semen collection was done once a week with the aid of artificial vagina. The diluents used were young Viridis coconut (5 to 7 months old) and tris aminomethane. The method used was an experiment in a randomized block design with 2 treatments and 10 replicates. The treatments used were T0: tris aminomethane + 10% egg yolk (control) and T1: young Viridis coconut water + 10% egg yolk. Data were analyzed by analysis of variance using Genstat 18 software. The variables measured were sperm individual motility, viability, and abnormality. The results showed that the sperm individual motility in T1 survived up to 4 days (40.5± 24.3%), the best viability at 5 days (42.0±24.6%), while the lowest abnormality at 7 days (1.31±0.6). It could be concluded that: 1. Tris aminomethane diluent has higher quality with the storage length up to 9 days, 2. Young Viridis coconut water diluent could preserve liquid semen quality of Boer goat up to 4 days for sperm motility and 5 days for sperm viability.Keywords: diluents, coconut water, viridis variety

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Effect of Integrated Nutrient Management on Yield and Quality of Garlic cv. Yamuna Safed-3

Journal of AgriSearch ◽

10.21921/jas.v7i04.19399 ◽

2020 ◽

Vol 7 (04) ◽

Author(s):

A B Priyanshu ◽

M K Singh ◽

Mukesh Kumar ◽

Vipin Kumar ◽

Sunil Malik ◽

...

Keyword(s):

Nutrient Management ◽

Block Design ◽

Quality Parameters ◽

Organic Fertilizers ◽

Research Centre ◽

Yield And Quality ◽

Randomized Block Design ◽

The Impact ◽

Horticultural Research

An experiment was conducted at Horticultural Research Centre, SVP University of Agriculture and Technology, Meerut (UP) during Rabi season of 2018-19 to assess the impact of different INM doses on yield and quality parameters of garlic. A total of ten treatments consisting of combinations of inorganic fertilizers, organic fertilizers and bio-fertilizers like T1- (Control), T2RDF (100:50:50 kg NPK ha-1), T3-RDF + 20 kg sulphur + FYM 20 ton ha-1, T4- RDF + 20 kg sulphur + VC 4 ton ha-1, T5- 75% RDF + 40 kg sulphur + 5 ton FYM ha-1+ PSB 5 kg ha-1, T6-75% RDF + 40 kg sulphur + 2 ton VC + Azotobacter 5 kg ha-1, T7- 75% RDF + 40 kg sulphur + FYM 3 ton + VC 1 ton+ PSB 5 kg + Azotobacter 5kg ha-1, T8- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg ha-1, T9- 50% RDF + 40 kg sulphur + FYM5 ton + VC 2 ton+ Azotobacter 5 kg ha-1and T10- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg + Azotobacter 5 kg ha-1 were used in Randomized Block Design and replicated thrice. Out of these an application of T7 (75% RDF + 40 kg sulphur + FYM3 ton + VC 1 ton ha-1 + PSB 5 kg + Azotobacter 5 kg ha-1) was found to be significantly superior in term of yield and attributing parameters of garlic.

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Nutritional value of sorghum silages

Acta Scientiarum Animal Sciences ◽

10.4025/actascianimsci.v39i2.32677 ◽

2017 ◽

Vol 39 (2) ◽

pp. 137

Author(s):

Marielly Maria Almeida Moura ◽

Daniel Ananias de Assis Pires ◽

Renê Ferreira Costa ◽

Daniella Cangussú Tolentino ◽

João Paulo Sampaio Rigueira ◽

...

Keyword(s):

Crude Protein ◽

Block Design ◽

Significance Level ◽

Dry Matter Digestibility ◽

Randomized Block Design ◽

Nutritional Characteristics ◽

High Participation ◽

Sorghum Genotypes

This study aimed to evaluate the nutritional characteristics and quality of silages of five sorghum genotypes, namely: Volumax, AG2005E, Qualimax, BRS610 and AG2501. The study was conducted at the Experimental Farm Unimontes, in the municipality of Janaúba, state of Minas Gerais. The treatments were distributed in a randomized block design with four replicates. Data were tested by analysis of variance andmeans were compared by Scott-Knott test at a significance level of 5%. The pH values ranged from 3.93 and 4.10. Genotypes differed in all studied nutritional characteristics (p < 0.05). For the acid detergent fiber, differences were detected between the genotypes, AG2501 (35.66%), Volumax (34.89%), AG2005E (34.53%), Qualimax (32.39%) and BRS610 (33.60%). The high participation of lignin was verifiedin all genotypes except for Volumax (4.14%). All silages were within the recommended range 50-65% for in vitro dry matter digestibility and classified as having good quality, however only the AG2005E genotype met nitrogen requirements for microbial fermentation, with 7.06% crude protein.

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