Microorganismos Fijadores De Nitrógeno Y Su Acción Complementaria A La Fertilización Química En El Cultivos De Coffea arabica L.

The objective of this work was to evaluate the effect of nitrogen's fixers complementaries to the chemical fertilization in the coffe groing. Ten treatments were used and three repetitions in plots of twenty-five plants, which were distributed in a complete blocks design at random. For the evaluation of averages were used the Tukey test at 95% confidence. During the cycle of the crop was evaluated: plant height, stalk diameter per plant, number of branches per plant, number of grains per plant, weight of 100 grains, yield per hectare of gold coffee and an economic analysis of the treatments. As a result of the experiment, it was noticed that the biofertilizers impacted on the development and performance of coffee cultivation, there was also an increase performance with higher values to the witness. The highest performance was submitted with the application of Micro-Asp (Azospirillium brsilense) in a dose of 6 l/ha in combination with a program of fertilization (160 kg N, 60 kg P, 75 kg K, 30 kg S, 20 kg Mg, 0.4 kg B, 0.2 kg Zn) based on the analysis of soil, achieving 1118.75 kg/ha of gold coffee, the same that is 4.29 times greater than the witness (260,7 kg/ha of gold coffee).

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DESENVOLVIMENTO DE MUDAS DE CAFEEIRO PRODUZIDAS EM TUBETES SOB MALHAS TERMO-REFLETORAS E MALHA NEGRA

Irriga ◽

10.15809/irriga.2016v1n1p52-65 ◽

2018 ◽

Vol 1 (1) ◽

pp. 52 ◽

Cited By ~ 1

Author(s):

Vinícios Maia Costa ◽

Marcos Vinícios Folegatti ◽

Roberto Terumi Atarassi ◽

Sérgio Nascimento Duarte ◽

Nildo Da Silva Dias ◽

...

Keyword(s):

Relative Humidity ◽

Solar Radiation ◽

Leaf Area ◽

Coffea Arabica ◽

Dry Matter ◽

Significant Difference ◽

Stalk Diameter ◽

E Mail ◽

Coffea Arabica L

DESENVOLVIMENTO DE MUDAS DE CAFEEIRO PRODUZIDAS EM TUBETES SOB MALHAS TERMO-REFLETORAS E MALHA NEGRA VINÍCIUS MAIA COSTA1; MARCOS VINÍCIUS FOLEGATTI2; ROBERTO TERUMI ATARASSI3; SÉRGIO NASCIMENTO DUARTE4; NILDO DA SILVA DIAS5 E CLAUDIO RICARDO DA SILVA6. [1] Mestre em Agronomia, Depto. de Engenharia de Biossistemas, ESALQ-USP, Piracicaba – SP. E-mail: [email protected]. Titular, Depto. de Engenharia de Biossistemas, ESALQ-USP, Piracicaba – SP. E-mail: [email protected] de Ciências Agrárias, UFU, Av. Amazonas, s/n, Bloco 2E, Campus Umuarama, 38400-902, Uberlândia-MG. E-mail: [email protected]. Associado, Depto. de Engenharia de Biossistemas, ESALQ-USP, Piracicaba – SP. E-mail: [email protected] Associado 2, Departamento de Ciências Ambientais e Tecnológicas, Universidade Federal Rural do Semi-Árido, Mossoró, RN. E-mail: [email protected] de Ciências Agrárias, UFU, Av. Amazonas, s/n, Bloco 2E, Campus Umuarama, 38400-902, Uberlândia-MG. E-mail: [email protected]. 1 RESUMO Este experimento avaliou, em casa de vegetação, o desenvolvimento de mudas de cafeeiro produzidas em tubetes, sob o efeito de malhas utilizadas para sombreamento. Os tratamentos foram a tradicional malha negra 50% e as malhas termo-refletoras com atenuação da radiação solar de 40, 50, 60 e 70%. O delineamento experimental adotado foi em blocos casualizados contendo os 5 tratamentos, com 4 repetições, totalizando-se assim 20 parcelas. Os resultados mostram que temperatura do ar pouco variou no microclima protegido das parcelas, assim como a umidade relativa do ar e a transmissividade global (TRG) e fotossinteticamente ativa (TRFA). Verificou-se que malhas com menor atenuação da radiação solar apresentaram em geral maior transmissividade. A área foliar não apresentou diferença significativa entre os tratamentos; já para altura da planta e diâmetro do caule, verificou-se que as mudas produzidas sob as malhas termo-refletoras 40 e 50% foram superiores àquelas produzidas sob malha negra 50% e malhas termo-refletoras 60 e 70%, respectivamente. Nas avaliações de matéria seca, verificou-se que as mudas produzidas sob as malhas termo-refletoras 40% e 50% e malha negra 50% acumularam mais matéria seca comparativamente àquelas produzidas sob malhas termo-refletoras 60 e 70%. Assim, concluiu-se que as malhas termo-refletoras 40 e 50% e negra 50% apresentaram melhores resultados que as malhas termo-refletoras 60 e 70%. Palavras-chave: Coffea arábica L., sombreamento, ambiente protegido. COSTA, V.M.; FOLEGATTI, M.V.; ATARASSI, R.T.; DUARTE, S.N.; DIAS, N.S.; SILVA, C.R. DEVELOPMENT OF COFFEE SEEDLINGS PRODUCED IN PLASTIC TUBESUNDER TERMO-REFLECTIVE AND BLACK SCREENS 2 ABSTRACT This experiment evaluated, in greenhouse conditions, the development of coffee seedlings produced in plastic tubes, under the effect of screens used for shading. The treatments were the traditional black screen 50% and the thermo reflective screens with attenuation of the solar radiation of 40, 50, 60 and 70%. The adopted experimental delineation was randomized blocks with 5 treatments and 4 replicates, making up 20 parcels. The result showed that the temperature of air gently varied in the parcels, as well as the air relative humidity. Relating to global transmissivity (TRG) and photosynthetically active transmissivity (TRFA), it was verified that screens with less attenuation of the solar radiation presented higher transmissivity in general. The leaf area did not present significant difference among the treatments and seedlings height and stalk diameter, the seedlings produced under thermo-reflective screens 40% and 50% were superior to those produced under black screen 50% and thermo-reflective screen 60% and 70%. In the evaluations of dry matter, the seedlings produced under thermo-reflective screens 40% and 50%, and black screen 50% comparatively accumulated more dry matter than those produced under thermo-reflective screens 60% and 70%. Thus, it can be concluded that the thermo-reflective screens 40% and 50% and black screen 50% presented better results than the thermo-reflective screens 60% and 70%. Keywords: Coffea arábica L., shading, greenhouse.

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Soil enzymatic activity under coffee cultivation with different water regimes associated to liming and intercropped brachiaria

Ciência Rural ◽

10.1590/0103-8478cr20200532 ◽

2022 ◽

Vol 52 (3) ◽

Author(s):

Raquel Nogueira Rodrigues ◽

Fábio Bueno dos Reis Junior ◽

André Alves de Castro Lopes ◽

Omar Cruz Rocha ◽

Antônio Fernando Guerra ◽

...

Keyword(s):

Acid Phosphatase ◽

Soil Enzymes ◽

Coffea Arabica ◽

Water Regimes ◽

Soil Enzymatic Activity ◽

Dry Seasons ◽

Coffee Plants ◽

Lime Application ◽

Coffee Cultivation ◽

Coffea Arabica L

ABSTRACT: This research evaluated the effects of coffee cultivation with two different water regimes associated or not with liming and the presence/absence of brachiaria as intercrop on the activities of the soil enzymes β-glucosidase, arylsulfatase and acid phosphatase. The study was carried out at the experimental farm of Embrapa Cerrados, using the cultivar IAC 144 (Coffea arabica L.), under a clayey dystrophic Cerrado Oxisol. Two water regimes (WR) were considered, WR1 with irrigation shifts throughout the year and WR3 with controlled water stress, for about 70 days, in the dry season. In each water regime, effects of lime application (with/without) and the presence/absence of brachiaria cultivated between the lines of coffee plants were evaluated. The activities of the enzymes β-glucosidase, arylsulfatase and acid phosphatase were evaluated during the rainy and dry seasons. Liming and intercropped brachiaria positively affected the activities of the three enzymes assessed in this study at varying degrees, depending on season and/or the WR. Our findings evidenced that intercropped brachiaria in coffee rows was the factor that most positively impacted soil enzymes activities.

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Coffea arabica (cv Catuaí) production and bean size under different population arrangements and soil water availability

Engenharia Agrícola ◽

10.1590/s0100-69162013000100015 ◽

2013 ◽

Vol 33 (1) ◽

pp. 145-156 ◽

Cited By ~ 2

Author(s):

Emilio Sakai ◽

Eduardo A. A. Barbosa ◽

Jane M. de C. Silveira ◽

Regina C. de M. Pires

Keyword(s):

Experimental Design ◽

Water Availability ◽

Coffea Arabica ◽

Descriptive Analysis ◽

Coffee Bean ◽

Crown Diameter ◽

Tukey Test ◽

Coffee Beans ◽

Coffea Arabica L ◽

Bean Size

The purpose of this research was to evaluate the effect of drip irrigation under different population arrangements on the phytometric features, coffee productivity and bean size classification according to sieve retention. The experiment with Coffea arabica L. cv Catuaí was carried out in Mococa, São Paulo, Brazil. The experimental design was a 6 x 2 factorial scheme in randomized blocks, with four replications. The six densities of plantation were E1 (1.60 x 0.50 m); E2 (1.60 x 0.75 m); E3 (1.60 x 1.00 m); E4 (3.20 x 0.50 m); E5 (3.20 x 0.75 m) and E6 (3.20 x 1.00 m), which were divided according to the availability of water (irrigated - I - or non-irrigated - NI - groups). Data were submitted to analysis of variance and averages compared by Tukey test at 1 and 5% of probability. Descriptive analysis of coffee beans according to sieve classification was performed. Irrigation promoted an increase in plant height, crown diameter and production of processed coffee when compared with the NI group. Interaction between population arrangement and irrigation was observed, with an increase in production and crown diameter as the spacing was decreased. Therefore, irrigation provided significant increase in coffee bean size.

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SISTEMA DE PRODUCCIÓN DE CAFÉ (Coffea arabica L.) EN LA COMUNIDAD DEL CERRO CUATE, ILIATENCO, GUERRERO

RECUBRIMIENTO COMESTIBLE CON BASE DE PIÑON MEXICANO (Jatropha curcas) SOBRE LA CALIDAD DE CHAYOTE MINIMAMENTE PROCESADO ◽

10.32854/agrop.v11i10.1262 ◽

2018 ◽

Vol 11 (10) ◽

Author(s):

A. Delgado-Alvarado

Keyword(s):

Coffea Arabica ◽

El Sistema ◽

Coffea Arabica L

Objetivo: Analizar el proceso de producción y comercialización de café en la comunidad del Cerro Cuate, Iliatenco, en la región de la Montaña de Guerrero, México.Diseño/Metodología/aproximación: el trabajo se realizó por; 1) investigación documental), 2) selección del área de estudio, 3) Entrevista estructurada con preguntas abiertas a 22 cafeticultores, soportada con la técnica de encuesta seccional y la herramienta de cédulas de entrevistas, y 4) análisis de la información. El tamaño de muestra se definió por el método de muestreo por conveniencia, y la selección de las unidades de análisis por la técnica bola de nieve. Resultados: El sistema de producción de café que predominó fue el sistema rústico de montaña, intercalado con plátano y frutales. La máxima productividad de las plantaciones se alcanza de 5.5 a 7.5años de edad, la renovación de plantas la hacen a los 12 años. El rendimiento de café fue de 3.7 kg por planta por año. La producción del café la realizan principalmente hombres (77.3%), entre 56 y 70años de edad. La venta se realiza en la presentación de café capulín a granel a intermediarios, a la ARIC, a CAFECO, a la Unión de Ejidos y a la Organización Mixtrui.Limitaciones del estudio/implicaciones: Se da una propuesta de mejora para favorecer el proceso de producción, beneficio y comercialización del café.Hallazgos/conclusiones: Coffea arabica es el principal café que se cultiva, con las variedades Typica, Caturra, Mundo Novo, Garnica y Bourbón. Los factores que limitan su producción y calidad son faltade planeación en manejo del cultivo y no contar con asesoría técnica.

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ATIVIDADE DE AGUA, CRESCIMENTO MICROBIOLOGICO E PERDA DE MATÉRIA SECA DOS GRÃOS DE CAFÉ (Coffea arabica L.) EM DIFERENTES CONDIÇÕES DE ARMAZENAMENTO

Revista Brasileira de Produtos Agroindustriais ◽

10.15871/1517-8595/rbpa.v5n1p17-24 ◽

2003 ◽

Vol 5 (1) ◽

pp. 17-24 ◽

Cited By ~ 3

Author(s):

P.C. Afonso Júnior ◽

P.C. Corrêa ◽

F.S. Silva ◽

D.M. Ribeiro

Keyword(s):

Coffea Arabica ◽

Coffea Arabica L

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Deposição da calda de pulverização em diferentes volumes vegetativos de Coffea arabica L.

Coffee Science ◽

10.25186/cs.v12i1.1232 ◽

2017 ◽

Vol 12 (1) ◽

pp. 69 ◽

Cited By ~ 2

Author(s):

Felipe Santinato ◽

Renato Adriane Alves Ruas ◽

Carlos Diego Silva ◽

Rouverson Pereira Da Silva ◽

Victor Afonso Reis Gonçalves ◽

...

Keyword(s):

Coffea Arabica ◽

Para Determinar ◽

Coffea Arabica L

A disposição dos ramos e sobreposição das folhas em plantas de café dificultam a penetração da calda pulverizada. Portanto, para determinar o volume de calda adequado, é importante verificar o estado de enfolhamento da lavoura antes da aplicação. Objetivou-se com este trabalho, avaliar a deposição de caldas de pulverização em lavouras de café aplicadas em diferentes volumes vegetativos. Os tratamentos foram dispostos seguindo esquema de parcelas subdivididas em cada volume vegetativo (5.000; 7.500; 10.000 e 17.500 m3 ha-1). Sendo as parcelas cinco volumes de calda (150, 300, 450, 600 e 750 L ha-1) e as subparcelas três posições no dossel do cafeeiro (terço superior, médio e inferior) com quatro repetições. Nos quatro volumes vegetativos estudados, não ocorreu interação significativa (p>0,05) entre o volume aplicado e os diferentes volumes vegetativos. Porém, os volumes vegetativos de 5.000,0 e 17.500,0 m3 ha-1 a deposição foi crescente com aumento das vazões, o que pode ser atribuído a densidade foliar. Não foi verificada diferença estatística (p> 0,05), entre as médias de deposição nos diferentes terços (alturas) no dossel das plantas de café, nos volumes vegetativos 5.000,0 m3 ha-1, 10.000,0 m3 ha-1 e 17.500,0 m3 ha-1. Contudo, no volume de 7.500,0 m3 ha-1 houve maior deposição no terço mediano em relação ao terço inferior. A deposição é maior à medida que aumenta o volume de calda aplicado. Em plantas com menor densidade foliar, há incremento na deposição. A deposição é maior no terço mediano em relação ao terço inferior.

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Pengelolaan Pemangkasan Tanaman Kopi Arabika (Coffea arabica L.) di Kebun Blawan, Bondowoso, Jawa Timur

Buletin Agrohorti ◽

10.29244/agrob.4.3.266-275 ◽

2016 ◽

Vol 4 (3) ◽

pp. 266

Author(s):

Vinsensia Febrina Sianturi ◽

Ade Wachjar

Keyword(s):

Coffea Arabica ◽

Coffea Arabica L

Kopi merupakan salah satu komoditas perkebunan yang memiliki nilai ekonomi yang cukup tinggi. Kegiatan magang bertujuan mempelajari teknik budidaya tanaman dan pengelolaan perkebunan kopi, mempelajari dan menganalisis permasalahan yang dihadapi di lapangan mengenai pengelolaan pemangkasan serta solusi mengatasinya. Pemangkasan bertujuan agar pohon tetap rendah sehingga mudah perawatannya, dan membentuk cabang-cabang produksi yang baru. Kegiatan magang dilaksanakan di Kebun Blawan, Bondowoso, Jawa Timur, mulai bulan Februari sampai dengan Juni 2014. Pengumpulan data primer diperoleh melalui pengamatan dan praktik kerja secara langsung meliputi kegiatan pemeliharaan tanaman yaitu pemangkasan lepas panen (pengamatan cabang-cabang tanaman, tinggi tanaman, jumlah tunas yang tumbuh), sedangkan data sekunder diperoleh melalui laporan manajemen perusahaan. Analisis data yang dilakukan secara deskriptif, rata-rata dan persentase. Pemangkasan yang dilakukan termasuk dalam kategori pemangkasan ringan. Tanaman kopi yang memiliki kondisi cabang yang merata dan seimbang sangat mempengaruhi hasil taksasi produksi. Banyak cabang harus dipangkas karena cabang-cabang yang sudah tua dan terserang penyakit. Setelah melakukan pemangkasan, tanaman menghasilkan tunas-tunas baru.

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Performance of two combine harvester header in soybean crops

Scientific Electronic Archives ◽

10.36560/1312020737 ◽

2020 ◽

Vol 13 (2) ◽

pp. 1

Author(s):

E. M. Samogim ◽

T. C. Oliveira ◽

Z. N. Figueiredo ◽

J. M. B. Vanini

Keyword(s):

Experimental Design ◽

Crop Yield ◽

Field Performance ◽

Travel Speed ◽

The Other ◽

Combine Data ◽

Mato Grosso ◽

Tukey Test ◽

Combine Harvester ◽

And Performance

The combine harvest for soybean crops market are currently available two types of combine with header or platform, one of conventional with revolving reel with metal or plastic teeth to cause the cut crop to fall into the auger header and the other called "draper" headers that use a fabric or rubber apron instead of a cross auger, there are few test about performance of this combine header for soybean in Mato Grosso State. The aim of this work was to evaluate the soybean harvesting quantitative losses and performance using two types combine header in four travel speed. The experiment was conducted during soybean crops season 2014/15, the farm Tamboril in the municipality of Pontes e Lacerda, State of Mato Grosso. The was used the experimental design of randomized blocks, evaluating four forward harvesting speeds (4 km h-1, 5 km h-1, 6 km h-1 and 7 km h-1), the natural crops losses were analyzed, loss caused by the combine harvester (combine header, internal mechanisms and total losses) and was also estimated the field performance of each combine. Data were submitted to analysis of variance by F test and compared of the average by Tukey test at 5% probability. The results show the draper header presents a smaller amount of total loss and in most crop yield when compared with the conventional cross auger.

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Unveiling a unique genetic diversity of cultivated Coffea arabica L. in its main domestication center: Yemen

Genetic Resources and Crop Evolution ◽

10.1007/s10722-021-01139-y ◽

2021 ◽

Author(s):

C. Montagnon ◽

A. Mahyoub ◽

W. Solano ◽

F. Sheibani

Keyword(s):

Genetic Diversity ◽

Genetic Distance ◽

Coffea Arabica ◽

Genetic Improvement ◽

The World ◽

Genetic Clusters ◽

Domestication Process ◽

Almost All ◽

Coffea Arabica L ◽

Cup Quality

AbstractWhilst it is established that almost all cultivated coffee (Coffea arabica L.) varieties originated in Yemen after some coffee seeds were introduced into Yemen from neighboring Ethiopia, the actual coffee genetic diversity in Yemen and its significance to the coffee world had never been explored. We observed five genetic clusters. The first cluster, which we named the Ethiopian-Only (EO) cluster, was made up exclusively of the Ethiopian accessions. This cluster was clearly separated from the Yemen and cultivated varieties clusters, hence confirming the genetic distance between wild Ethiopian accessions and coffee cultivated varieties around the world. The second cluster, which we named the SL-17 cluster, was a small cluster of cultivated worldwide varieties and included no Yemen samples. Two other clusters were made up of worldwide varieties and Yemen samples. We named these the Yemen Typica-Bourbon cluster and the Yemen SL-34 cluster. Finally, we observed one cluster that was unique to Yemen and was not related to any known cultivated varieties and not even to any known Ethiopian accession: we name this cluster the New-Yemen cluster. We discuss the consequences of these findings and their potential to pave the way for further comprehensive genetic improvement projects for the identification of major resilience/adaptation and cup quality genes that have been shaped through the domestication process of C. arabica.

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