scholarly journals Desiccation time of the spring sorghum as a predecessor crop for summer soybean and autumn bean in a no-tillage system

2016 ◽  
Vol 36 (1) ◽  
pp. 94-101
Author(s):  
Marcelo S. Denadai ◽  
Luiz M. M. de Mello ◽  
Carlos A. Chioderoli ◽  
Rodolfo de Niro Gazola
Keyword(s):  
Experimental Design ◽  
No Tillage ◽  
Soybean Yield ◽  
Soybean Crop ◽  
Tukey Test ◽  
Tillage System ◽  
Statistical Program ◽  
Level Of Significance ◽  
Bean Crop ◽  
Sorghum Straw

ABSTRACT Several authors have been questioned the desiccation interval between the coverage plants and sowing plants for the soybean crop. Therefore, this study aimed to evaluate the desiccation time of the spring sorghum as a predecessor crop for summer soybean and then for autumn bean, focusing on the straw formation for maintenance of the no-tillage system and to evaluate the yield of soybeans and beans grain, as well as analyzing the interference of sorghum straw in these cultures. The experiment was developed in the Teaching and Research Farm of FE/UNESP located in Ilha Solteira/SP where it was used an experimental design of randomized blocks with five treatments and six repetitions. The treatments consisted of five different intervals between sorghum desiccation and soybean sowing (being with D7 - Drying sorghum seven days before the soybean sowing; and successively for D14, D21, D28 and D35). In order to analyze the results, it was used the Tukey test for a 10% level of significance and the statistical program called Sisvar. The "Cober Crop" sorghum exerted influence on soybean yield but this effect was not lasting for the bean crop in succession to the soybeans.

scholarly journals MÉTODOS DE FORNECIMENTO DE NITROGÊNIO PARA MELHORAR A PRODUTIVIDADE NA CULTURA DO FEIJOEIRO IRRIGADO NO CERRADO MATO-GROSSENSE

Nativa ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 252
Author(s):  
Anderson Lange ◽  
Edilson Cavalli ◽  
Ewerton Alves Carleto ◽  
Antonio Carlos Buchelt ◽  
Cassiano Cavalli ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Experimental Design ◽  
Phaseolus Vulgaris ◽  
Nitrogen Fertilization ◽  
No Tillage ◽  
Biological Fixation ◽  
Tillage System ◽  
Biological Nitrogen ◽  
Bean Crop ◽  
Direct Sowing

O nitrogênio é um dos elementos mais requerido pela cultura do feijoeiro e seu fornecimento à planta pode se dar por meio de adubação nitrogenada e por meio da fixação biológica. O presente estudo objetivou avaliar estratégias de manejo da adubação nitrogenada e a capacidade da associação entre inoculante e Co+Mo em substituir parcialmente o N aplicado na cultura do feijoeiro semeado em sistema irrigado. O estudo foi desenvolvido em Sinop – MT, no período de junho a outubro de 2011, época denominada inverno, sob pivô central em sistema de semeadura direta, em um Latossolo Vermelho-amarelo Distrófico. O delineamento experimental utilizado foi de blocos casualizados com 15 tratamentos e 4 repetições. Os tratamentos foram constituídos pela combinação de doses e fontes de N, inoculação com Rhizobium tropicci e tratamento de sementes com Co e Mo. Em relação aos tratamentos não se observou diferença para altura da inserção da primeira vagem e número de grãos por vagem. A produtividade foi maior nos tratamentos que receberam N. A associação da inoculação com baixas doses de N é efetiva para suprir as demandas da cultura, se igualando a elevadas doses de N. A produtividade apresentou correlação positiva e significativa com a maioria das características avaliadas.Palavras-chave: Phaseolus vulgaris, manejo do nitrogênio, semeadura direta na palha, fixação biológica de nitrogênio, cultivo de inverno. METHODS OF SUPPLY OF NITROGEN TO IMPROVE PRODUCTIVITY IN THE CULTURE OF IRRIGATED BEANS IN SAVANNA MATO-GROSSENSE ABSTRACT:Nitrogen is one of the elements most required by the bean crop and its supply to the plant can occur through nitrogen fertilization and through biological fixation. The objective of this study was to evaluate strategies of nitrogen fertilization management and the ability of the association between inoculant and Co + Mo to partially replace the N applied in the bean crop planted in irrigated system. The study was developed in Sinop-MT, from June to October 2011, a period denominated winter, under central pivot in a no-tillage system, in a Red-yellow Latosol. The experimental design was a randomized block with 15 treatments and 4 replicates. The treatments consisted of the combination of rates and sources of N, inoculation with Rhizobium tropicci and treatment of seeds with Co and Mo. Regarding the treatments, no difference was observed in the height of the first pod insertion and number of grains per pod. The productivity was higher in the treatments that received N. The association of the inoculation with low rates of N is effective to meet the demands of the crop, equaling to high rates of N. The productivity showed a positive and significant correlation with most of the evaluated characteristics.Keywords: Phaseolus vulgaris, management of nitrogen, direct sowing in straw, biological nitrogen fixation, winter cropping. DOI:

scholarly journals Technical and Economic Viability of Wheat with Forms of Application and Doses of Boron

2018 ◽  
Vol 10 (4) ◽  
pp. 306 ◽  
Author(s):  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Salatiér Buzetti ◽  
Eduardo H. M. Boleta ◽  
Willian L. Rodrigues ◽  
...  
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Leaf Tissue ◽  
Economic Viability ◽  
No Tillage ◽  
Wheat Grain ◽  
Economic Return ◽  
Randomized Block Design ◽  
Tillage System ◽  
Irrigated Wheat

Boron is one of the most limiting micronutrients in grains production system in Brazil. In this way, the objective was to evaluate the effect of forms of application and doses of boron in irrigated wheat grain yield evaluating the economic terms in Cerrado region. The experiment was conducted in no-tillage system in an Oxisol with clay texture in Selvíria, MS, Brazil. The experimental design was a randomized block design with four replicates, arranged in a 4 × 3 factorial scheme: four doses of boron (0, 1, 2 and 4 kg ha-1) with boric acid source (B = 17%); and three apllication forms: a) in desiccation of the predecessor straw, together with herbicide; b) at the time of sowing, in soil along with the formulated fertilization seeding and c) via leaf tissue with the application of post emergent herbicide. The application of 2 kg ha-1 provides greater grain yields, but the highest economic return was obtained at the dose of 1 kg ha-1, with application in soil, ensuring profitability from production of irrigated wheat in the Cerrado.

scholarly journals Resistance to Glyphosate in Populations of Digitaria insularis

2018 ◽  
Vol 36 ◽  
Author(s):  
N.V. COSTA ◽  
G. MORATELLI ◽  
S.D. FERREIRA ◽  
A.C. SALVALAGGIO ◽  
A.C.P. RODRIGUES-COSTA
Keyword(s):  
Experimental Design ◽  
Response Curve ◽  
Glyphosate Resistance ◽  
No Tillage ◽  
Agronomic Practices ◽  
Intensive Use ◽  
Tillage System ◽  
Moderate Resistance ◽  
Agricultural Areas ◽  
Selection Of

ABSTRACT: The intensive use of glyphosate can select resistant populations. This study aimed at evaluating the occurrence of glyphosate resistance in populations of D. insularis in agricultural areas. Three experiments were conducted in randomized block experimental design with four replications. The Resistance Degree (RD) was determined by a dose-response curve in the evaluated populations: Experiment 2012, São Camilo (R01 and R02) and Palotina (R03, R04 and S05-susceptible); Experiment 2013 Palotina (R06 and R12), Katueté/Paraguay (R07), Toledo (R08 and R10), Cascavel (R09), São Miguel do Iguaçu (R11), Dom Eliseu/Pará (S13-susceptible); Experiment 2015 Nova Aurora (R14), Iracema do Oeste (R15 and R16), Jesuitas (R17 and R18), Tupãssi (R19), Jotaesse (R20), Espigão Azul (R21) and Palmitopolis (S22- susceptible). In 2012, it was possible to confirm a moderate resistance (RD = 1.1 to 5.0) only in R03; and populations R01, R02 and R04 were highly resistant (RD>5.0). In 2013, populations R09, R10, R11 and R12 showed resistance, while R06, R07 and R08 were highly resistant. In 2015, the R14, R16, R18, R19 and R20 populations showed moderateresistance, and R15 and R18 were highly resistant. Only R21 was susceptible. It was found that 83% of producers use the no-tillage system, 100% use the succession soybean/corn with 90% transgenic varieties, 45% of producers cannot explain the procedure regulation/sprayer calibration. Around 62% use practices to prevent the selection of resistant biotypes. Resistance was confirmed in 89.5% of the populations. The adopted agronomic practices may explain these results.

scholarly journals PRODUTIVIDADE DE FITOMASSA DE REBROTAS DE SORGO EM CONSÓRCIO COM CAPIM-PAIAGUÁS

2019 ◽  
Vol 18 (1) ◽  
pp. 133-147
Author(s):  
ALLAN HISASHI NAKAO ◽  
MARCELO ANDREOTTI ◽  
VIVIANE CRISTINA MODESTO ◽  
ISABÔ MELINA PASCOALOTO ◽  
DEYVISON DE ASEVEDO SOARES
Keyword(s):  
Experimental Design ◽  
Azospirillum Brasilense ◽  
Dry Matter ◽  
Grain Sorghum ◽  
No Tillage ◽  
Productive Performance ◽  
Teaching Research ◽  
Tillage System ◽  
Urochloa Brizantha ◽  
Sorghum Grain

RESUMO: O objetivo do trabalho foi avaliar o desempenho produtivo de matéria seca e verificar o acúmulo denutrientes das rebrotas do sorgo granífero ou dupla aptidão consorciados ou não com capim-paiaguás, com ou sema inoculação por Azospirillum brasilense, para continuidade do sistema plantio direto no Cerrado, após colheita paraensilagem. O experimento foi realizado na Fazenda de Ensino, Pesquisa e Extensão da Universidade Estadual Paulista(Unesp) - Campus de Ilha Solteira, localizada no município de Selvíria-MS. O delineamento experimental foi emesquema fatorial 2 x 2 x 2, com quatro repetições, sendo os tratamentos constituídos por dois anos de cultivo (2015 e2016); em cultivo exclusivo (solteiro) dos sorgos (granífero ou dupla aptidão) ou em consórcio com o capim-paiaguás,com ou sem a inoculação das sementes de sorgo com a bactéria diazotrófica Azospirillum brasilense. O aproveitamentoda rebrota do sorgo granífero ou de dupla aptidão, principalmente em consórcio com o capim-paiaguás, apresentou-seviável na produção de palhada remanescente no período de entressafra, pela maior produtividade de matéria seca, commaior acúmulo de nutrientes.Palavras-chave: Decomposição, integração lavoura-pecuária, Urochloa brizantha, plantio direto.PHYTOMASS PRODUCTIVITY OF SORGHUM INTERCROPPEDWITH PAIAGUÁS GRASSABSTRACT: This study objectified to evaluate the dry matter productive performance and to verify the nutrientaccumulation of sorghum regrowths with or without Urochloa brizantha cv. BRS Paiaguás (paiaguás grass)intercropped, and with or without Azospirillum brasilense inoculation, for the continuity of the no-tillage system in theCerrado, after harvesting for ensiling. The experiment was carried out at the Teaching, Research and Extension Farmof the Universidade Estadual Paulista (UNESP) - Ilha Solteira Campus, located in the municipality of Selvíria, MatoGrosso do Sul State. The experimental design used a 2 x 2 x 2 factorial scheme, with four replications. Treatments weretwo years of cultivation (2015 and 2016) and two different seeding arrangements of sorghum (grain or dual aptitude),monocropped or intercropped with paiaguás grass, with or without inoculation of sorghum seeds with Azospirillumbrasilense. The use of regrowth of both sorghum types (grain sorghum or dual aptitude), mainly intercropped withpaiaguás grass, was viable for the production of remaining straw in the off-season period, due to the higher productivityof dry matter, with greater accumulation of nutrients.Keywords: Decomposition, crop-livestock integration, Urochloa brizantha, no-tillage.

PERÍODOS DE DESSECAÇÃO DO CAPIM RUZIZIENSIS E SEUS EFEITOS NO DESENVOLVIMENTO E PRODUTIVIDADE DO MILHO

2018 ◽  
Vol 17 (3) ◽  
pp. 400
Author(s):  
ANA PAULA SILVA ◽  
MARILUCE PASCOINA NEPOMUCENO ◽  
ANDREISA FLORES BRAGA ◽  
PEDRO LUÍS DA COSTA AGUIAR ALVES
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Cover Crop ◽  
Growth And Yield ◽  
No Tillage ◽  
Full Bloom ◽  
Brachiaria Ruziziensis ◽  
Dry Biomass ◽  
Tillage System ◽  
Maize Plants

RESUMO – Considerando que há relatos de possível intoxicação de milho por causa da dessecação de capim braquiária, o objetivo deste estudo foi determinar o melhor período para semear o milho ‘Yield Gard DKB 390 YC’ após a dessecação da cobertura. O delineamento experimental foi inteiramente casualizado, com quatro repetições. Os tratamentos consistiram em seis períodos de dessecação do capim ruziziensis (25, 20, 15, 10, 05 e 0 dias antes da semeadura do milho) e uma testemunha sem cobertura. As dessecações foram feitas em pleno florescimento do capim ruziziensis com glyphosate a 1,44 kg ha-1. Foram avaliadas as plantas de milho aos 30 e 50 dias após a semeadura (DAS) quanto à altura, área foliar, massa seca de folhas e caule. Aos 150 DAS, foi avaliada a altura de plantas e a inserção da espiga, diâmetro e comprimento da espiga, massa de 100 grãos e produtividade de grãos. A dessecação do capim ruziziensis no mesmo dia da semeadura do milho reduziu a altura das plantas, a altura de inserção da espiga, o diâmetro da espiga e a produtividade de grãos. A melhor época para a semeadura do milho ‘Yield Gard DKB 390 YC’ após a dessecação de capim ruziziensis com glyphosate foi aos 25 dias após a dessecação.Palavras-chaves: Brachiaria ruziziensis, Urochloa ruziziensis, cobertura vegetal, plantio direto, glyphosate. EFFECTS OF DESICCATION PERIODS OF RUZIZIENSIS GRASS ON GROWTH AND YIELD OF MAIZE  ABSTRACT - Considering the possible occurrence of maize intoxication due to the desiccation of ruziziensis grass, the objective of this study was to evaluate the best period for sowing ‘Yield Gard DKB 390 YC’ in the no-tillage system. The experimental design was completely randomized with four replications. The treatments consisted of six periods of desiccation of ruziziensis grass (25, 20, 15, 10, 05 and 0 days before sowing maize) and one control without cover. The desiccations were done at full bloom of the ruziziensis grass with glyphosate at 1.44 kg ha-1. The maize plants were evaluated at 30 and 50 days after sowing (DAS) for height, leaf area, leaf and stem dry biomass. At 150 DAS, plant height and cob insertion, cob diameter and length, 100 grain mass and yield were evaluated. The desiccation of ruziziensis grass in the same day of maize sowing caused reduction in plant height, cob insertion height, cob diameter and yield. The best time for sowing ‘Yield Gard DKB 390 YC’ was 25 days after desiccation of ruziziensis grass with glyphosate.Keywords: Brachiaria ruziziensis, Urochloa ruziziensis, cover crop, no-tillage, glyphosate.

scholarly journals SULFENTRAZONE SELECTIVITY AND EFFICIENCY IN CASSAVA CROPS IN SANDY AND CLAYEY SOILS

2015 ◽  
Vol 33 (4) ◽  
pp. 787-793 ◽  
Author(s):  
N.V. COSTA ◽  
S.D. FERREIRA ◽  
J.R. RAMELLA ◽  
G. MORATELLI ◽  
R.F. DOURADO
Keyword(s):  
Experimental Design ◽  
Sandy Soil ◽  
Active Ingredient ◽  
Clayey Soil ◽  
Soil Conditions ◽  
No Tillage ◽  
Clayey Soils ◽  
Conventional System ◽  
Productive Potential ◽  
Tillage System

ABSTRACT Weeds have the potential to dramatically interfere in cassava cultivation, reducing its productive potential; however, there are few studies on the selective herbicides in this crop. Therefore, the objective was to evaluate in this work the selectivity and efficiency of sulfentrazone in cassava crops grown in sandy and clayey soils. Two experiments were carried out: The first one was carried out in sandy soil conditions in the conventional system; and the second one was carried out in clayey soil conditions in the no-tillage system. The experimental design was a randomized block with four replications. The treatments consisted in doses of 250, 500, 750 and 1,000 g ha-1 of sulfentrazone, and weeded and non-weeded controls. Sulfentrazone application in cassava crops has linearly reduced the production of roots in a proportion of 0.0153 and 0.0107 t ha-1 at each increment in grams of the active ingredient, respectively. It was concluded that sulfentrazone was not selective for cassava crops grown both in sandy and in clayey soil; however, it was highly effective in weed control in both soils.

scholarly journals Gradual correction of phosphorus availability in the no-tillage system

Revista CERES ◽  
2016 ◽  
Vol 63 (2) ◽  
pp. 256-264 ◽  
Author(s):  
Carlos Hissao Kurihara ◽  
William Marra Silva ◽  
Matheus Marques Dias ◽  
Bruno Patrício Tsujigushi ◽  
João Vitor de Souza Silva
Keyword(s):  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Soil Samples ◽  
First Year ◽  
Panicum Maximum ◽  
No Tillage ◽  
Triple Superphosphate ◽  
Soybean Crop ◽  
Split Plot ◽  
Tillage System

ABSTRACT In areas cultivated under no-tillage system, the availability of phosphorus (P) can be raised by means of the gradual corrective fertilization, applying phosphorus into sowing furrows at doses higher than those required by the crops. The objective of this work was to establish the amount of P to be applied in soybean crop to increase content of P to pre-established values at the depth of 0.0 to 0.10 m. An experiment was carried out on a clayey Haplorthox soil with a randomized block experimental design distributed in split-split plot, with four replications. Two soybean crop systems (single or intercropped with Panicum maximum Jaca cv. Aruana) were evaluated in the plots. In addition, it was evaluated four P levels (0, 60, 120 and 180 kg ha-1 P2O5) applied in the first year in the split plots; and four P levels (0, 30, 60 and 90 kg ha-1 P2O5) applied in the two subsequent crops in the split-split plot. Contents of P were extracted by Mehlich-1 and Anion Exchange Resin methods from soil samples collected in the split-split plot. It was found that it is necessary to apply 19.4 or 11.1 kg ha-1 of P2O5, via triple superphosphate as source, to increase 1 mg dm-3 of P extracted by Mehlich-1 or Resin, respectively, in the 0.0 to 0.10 m layer of depth. The soil drain P character decreases as the amount of this nutrient supplied in the previous crops is increased.

scholarly journals GLIFOSATO E MANGANÊS NA CONCENTRAÇÃO DE NUTRIENTES FOLIAR E CARACTERÍSTICAS AGRONÔMICAS DA SOJA

2018 ◽  
Vol 14 (3) ◽  
pp. 82-92
Author(s):  
Alexandre Perozini ◽  
Edson Lazarini ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Fernando Shintate Galindo
Keyword(s):  
Experimental Design ◽  
Developmental Stages ◽  
Soybean Variety ◽  
Foliar Fertilization ◽  
Soybean Yield ◽  
Soybean Crop ◽  
Agronomic Characteristics ◽  
Application Rates ◽  
Macro And Micronutrients

The objective of this study was to evaluate the effects of glyphosate and manganese (Mn) application at developmental stages in the nutrition and agronomic characteristics of soybean crop, in the municipality of Selvíria-MS, Brazil, in the 2012/13 harvest, using the soybean variety BRS Valiosa RR in an Oxisol, with a clayey texture. The experimental design was a randomized block with four replications in a 6x2 factorial scheme, being: Six glyphosate application rates (0 ga.i. ha-1, application of 720 g a.i. ha-1in V3 stage, 1440 g a.i. ha-1V3, 720+720 g a.i. ha-1V3 and V7, 1440 g a.i. ha-1in V7, and application of 720+1440 g a.i. ha-1V3 and V7;with or withoutMn application ( 0 g ha-1and 350 g ha-1) in V5 stage. Foliar applicationsof Mn and glyphosate did not influencedthe leaf concentrations of macro and micronutrients in soybean. Glyphosate at doses of 720+1440 g a.i. ha-1, applied in stages V3 and V7, associated with foliar fertilization with 350 g ha-1Mnin the V5 stage, reduces the first pod height, but increases the number grain per pod. Soybean yield was reducedwith glyphosate application at a dose of 720+1440 g ai ha-1in V3 and V7 stages, regardless of Mn leaf application.

scholarly journals IRRIGAÇÃO E DOSES DE NITROGÊNIO NO FEIJOEIRO DE INVERNO, EM SISTEMA PLANTIO DIRETO, NO MUNICÍPIO DE AQUIDAUANA-MS

Irriga ◽  
2009 ◽  
Vol 14 (1) ◽  
pp. 54-67 ◽  
Author(s):  
Gabriel Queiroz de Oliveira ◽  
Adriano Da Silva Lopes ◽  
Rodrigo Carniel ◽  
Marion Martins Vinsenci
Keyword(s):  
Phaseolus Vulgaris ◽  
Nitrogen Fertilization ◽  
No Tillage ◽  
Dry Bean ◽  
Mato Grosso ◽  
Class A ◽  
Tillage System ◽  
Bean Crop ◽  
Mato Grosso Do Sul ◽  
Class A Pan

IRRIGAÇÃO E DOSES DE NITROGÊNIO NO FEIJOEIRO DE INVERNO, EM SISTEMA PLANTIO DIRETO, NO MUNICÍPIO DE AQUIDAUANA-MS  Gabriel Queiroz de Oliveira; Adriano da Silva Lopes; Rodrigo Carniel; Marion Martins VinsenciUniversidade Estadual de Mato Grosso do Sul, Aquidauana, MS, [email protected]  1 RESUMO A cultura do feijoeiro, na época de inverno, vem se destacando por apresentar produtividade acima da média anual devido, principalmente, aos incrementos tecnológicos dos últimos anos entre os quais se destacam a irrigação. O objetivo deste trabalho foi avaliar a resposta do feijoeiro de inverno à irrigação e doses de adubação nitrogenada, em sistema plantio direto, no município de Aquidauana-MS. O experimento foi conduzido na Unidade Universitária de Aquidauana - Universidade Estadual de Mato Grosso Sul (UUA/UEMS), utilizando-se o cultivar de feijão Pérola semeado em junho de 2006. Utilizou-se o manejo de irrigação baseado nas leituras do tanque Classe A, com 3 momentos de se proceder a irrigação, com lâminas de 16,5; 27,6 e 30,5 mm, correspondendo a 50, 30 e 27% de reserva de água no solo, respectivamente; e quatro doses de adubação nitrogenada (0, 50, 100, 150 kgha-1 de N). O delineamento experimental utilizado foi o de blocos casualizados, com parcelas subdivididas, composto por três blocos e duas replicações dentro de cada bloco. Pode se concluir que, com a lâmina de irrigação de 16,5 mm e 100 kg de N ha-1, o feijoeiro teve a melhor produtividade, em torno de 3278 kg ha-1. UNITERMOS: Phaseolus vulgaris, tanque Classe A, evapotranspiração.  OLIVEIRA, G. Q.; LOPES, A. S.; CARNIEL, R.; VINCENSI, M. M. IRRIGATION AND NITROGEN DOSES IN DRY BEAN WINTER CROP UNDER NO TILLAGE SYSTEM IN AQUIDAUANA, STATE OF MATO GROSSO DO SUL  2 ABSTRACT The dry bean crop in the winter has become important for presenting yield above the annual average, mainly due to the technological increments in the past years,  like irrigation. The objective of this research was to evaluate the response of the dry bean crop to irrigation and nitrogen fertilization, under no tillage system. The research was carried in the experimental area of the Universidade Estadual de Mato Grosso do Sul - Aquidauana - MS (UUA/UEMS), using Perola cultivar sowed in June, 2006. Irrigation management was based on the readings of a Class A pan, with 3 irrigation times, water depths of 16.5mm; 27.6mm and 30,5 mmcorresponding to 50, 30 and 27% of water soil reserve, respectively; and four nitrogen fertilization doses (0, 50, 100, 150 kgha1 of N). The experimental design had randomized blocks in split plots. It can be concluded that with irrigation depth of 16.5 mmand 100 kgN ha-1, the dry bean had the best grain yield, around 3.278 kg ha-1. KEY WORDS: Phaseolus vulgaris, Class A pan, evapotranspiration. 

scholarly journals Atributos químicos do solo e produtividade da soja após milho, braquiária e feijão-caupi em latossolo na região do cerrado

2020 ◽  
Vol 16 (2) ◽  
pp. 16-28
Author(s):  
Luan Marlon Ribeiro ◽  
Willian Daniel de Souza ◽  
Gessí Ceccon
Keyword(s):  
Yield Components ◽  
Exchange Capacity ◽  
No Tillage ◽  
Soybean Yield ◽  
Brachiaria Ruziziensis ◽  
Tillage System ◽  
Main Plot ◽  
Winter Crops ◽  
Chemical Attributes ◽  
Red Latosol

The objective of this study was to evaluate soil chemical attributes and yield components of soybean after maize, brachiaria and cowpea in an oxisol in the Cerrado region. The experiment was carried out at Embrapa-CPAO experimental area in Dourados-MS, Brazil, in the 2014/15 crop year, in a clayey dystroferric Red Latosol under no-tillage system (SPD). The experimental design was in randomized blocks with split plots with four replications. The soil chemical evaluations were carried out in soybean R1stage, being considered as the main plot the fall-winter crops (Brachiaria ruziziensis, safrinha corn, intercropping with B. ruziziensisand cowpea) and the subplots as soil depths (0-10; 10-20; 20-30 and 30-40 cm). For soybean yield components, fall-winter crops and subplots were soybean cultivars (BRS 284 and BRS 360 RR). In general, previous soybean crops in SPD provided higher contents of some nutrients at depths from 0 to 10 cm, in addition to higher cation exchange capacity, base saturation and soil organic matter. Cowpea, safrinha corn and B. ruziziensisprovided conditions for higher soybean yield. BRS 284 presented higher number of grains per plant, however BRS 360 RR proved to be more productive.

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