scholarly journals Agronomic performance of soybean crops under integrated production systems in the Southwestern Brazilian Amazon biome

2020 ◽  
Vol 24 (12) ◽  
pp. 793-799
Author(s):  
Rodrigo da S. Ribeiro ◽  
Alexandre M. A. dos Passos ◽  
Andreia M. Aker
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Production Systems ◽  
Brazilian Amazon ◽  
Maturation Stage ◽  
Agronomic Performance ◽  
Integrated Production ◽  
Alternative Crop ◽  
Soybean Plants ◽  
Pod Number

ABSTRACT Soybean is an alternative crop to be used in intensified land use systems and recovery of degraded areas in Brazil. Thus, the objective of this study was to evaluate the agronomic performance of soybean crops under integrated production systems in the Southwestern Brazilian Amazon biome. Soybean crop was grown in alleys with widths of 18, 30, and 42 m between the 4-row tree sets of eucalyptus and evaluated in two agricultural years (2016-2017 and 2017-2018). Plant height, first pod insertion height, number of grains per pod, number of pods per plant, 100-grain weight, and grain yield of soybean plants at maturation stage were evaluated in different distances from the eucalyptus (10, 20, 30 and 45% of the alley width). The lowest mean grain yield was found for the alley of 18 m in the 2017-2018 agricultural year. The proximity of soybean plants to eucalyptus trees affects negatively the grain yield, plant height, first pod insertion height, plant population, and number of pods per plant. The crop-livestock-forest integration system, with the forest component consisting of 5-year-old eucalyptus trees (technical age for harvest), resulted in higher soybean grain yields for the alley of 42 m. The growth of soybean crops in alleys of 18 m between 4-row tree sets of 5-year-old eucalyptus trees is not recommended for the Southwestern region of the Brazilian Amazon biome.

scholarly journals Control of Conyza spp. with sequential application of glufosinate in soybean pre-sowing

2020 ◽  
Vol 50 (9) ◽  
Author(s):  
Alfredo Junior Paiola Albrecht ◽  
Leandro Paiola Albrecht ◽  
André Felipe Moreira Silva ◽  
Romulo Augusto Ramos ◽  
Natália Buttini Corrêa ◽  
...  
Keyword(s):  
Plant Height ◽  
Seed Production ◽  
Management System ◽  
Block Design ◽  
Agronomic Performance ◽  
General Control ◽  
Crop Injury ◽  
Randomized Block Design ◽  
Soybean Plants

ABSTRACT: Conyza spp. is among the main weeds reported worldwide. Due to its aggressiveness, such as high seed production and dispersion, and the growing reports of biotypes resistant to glyphosate, paraquat, and other herbicides, different control practices are required. Thus, this study aimed to evaluate the efficacy of herbicides with sequential application of glufosinate in soybean pre-sowing for control of Conyza spp. with indicative of resistant to paraquat. The study was carried out in the field, at Assis Chateaubriand and Palotina, state of Paraná, Brazil, in the 2018/19 season. The experiments were conducted in a randomized block design with four replications. The treatments consisted in application of glyphosate, 2,4-D, saflufenacil, glufosinate, saflufenacil/imazethapyr, diclosulam, paraquat/diuron, paraquat and imazethapyr/flumioxazin, at different combinations, in soybean pre-sowing. Control of Conyza spp., crop injury to soybean plants and variables related to agronomic performance (plant height and yield) were evaluated. All treatments were selective for soybean, which showed stronger crop injury in the presence of diclosulam herbicide, but this did not compromise soybean agronomic performance. In general, control levels were high for the treatments used. Except for paraquat treatments, in the area with the highest frequency of Conyza spp. with indicative of resistant to paraquat, and imazethapyr/flumioxazin treatment in both areas. These control results emphasized the importance of glufosinate in this management system and showed promising results for saflufenacil/imazethapyr.

scholarly journals Action of auxin inhibitors on growth and grain yield of soybean

Revista CERES ◽  
2013 ◽  
Vol 60 (5) ◽  
pp. 621-628 ◽  
Author(s):  
Gederson Luiz Buzzello ◽  
Michelangelo Muzell Trezzi ◽  
José Abramo Marchese ◽  
Elouize Xavier ◽  
Edemir Miotto Junior ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Negative Correlation ◽  
Block Design ◽  
Sowing Date ◽  
Growth And Yield ◽  
Fertility Level ◽  
Randomized Block Design ◽  
Soybean Genotypes ◽  
Soybean Plants

Soybean genotypes grown in sub-tropical climate may exhibit lodging. The plant lodging is influenced by soil type and fertility level, sowing date, latitude and altitude of the location, plant population and conditions of crop development. Plant regulators and herbicides are able to avoid or reduce plant lodging. This study aimed to verify the effects of the growth regulators TIBA and daminozide on vegetative growth and yield of soybean cultivar CD 214 RR. The experiment was carried out at a field in randomized block design with four replications in a factorial scheme. The A factor was represented by the combination of regulators TIBA and daminozide and its concentrations, and the Factor B was seven times of evaluation of injury and plant height or eight times of evaluation of lodging. In the range of doses used, the application of daminozide resulted in greater injury to soybean plants than TIBA. The smaller plant height was achieved by the application of 6 g ha-1 of TIBA and 1200 g ha-¹ of daminozide. Treatments with daminozide (100 g ha-¹) and TIBA (10 g ha-1) stood out due to the reduced lodging of soybean plants. Grain weight increased linearly when the levels of TIBA increased. There was a negative correlation between lodging and grain yield and a positive correlation between plant height and lodging. There was also a negative correlation between injury caused by the application of plant regulators and lodging.

scholarly journals Agronomic Performance and Genetic Divergence in Corn (Zea mays) in the Cerrado-Amazon Ecotone

2019 ◽  
pp. 1-7
Author(s):  
Rafael Marcelino Da Silva ◽  
Weder Ferreira dos Santos ◽  
Matheus Rodrigues de Andrade ◽  
Zildiney Dantas Da Silva ◽  
Layanni Ferreira Sodré Santos ◽  
...  
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Genetic Divergence ◽  
Optimization Method ◽  
Multivariate Model ◽  
Agronomic Performance ◽  
Ear Height ◽  
Generalized Distance

The objective of this work is to study the agronomic performance and genetic divergence in corn in the Cerrado-Amazon ecotone. The trials were conducted in the 2017/18 harvest at a property in the state of Pará. The experimental design was a randomized block with nine treatments and three replications, where the treatments are represented by nine cultivars of corn. The characteristics to evaluate agronomic performance and genetic divergence were: ear height (cm), plant height (cm), ear length (cm), ear diameter (mm), number of rows, number of grains per row and grain yield (kg ha−1). The cultivars were separated into a multivariate model in five groups using the Tocher optimization method. The cultivar AG 1051 showed the best agronomic performance. The results of genetic divergence were according to the generalized distance of Mahalanobis (D2), with the commences AG 8088 x CATIVERDE and AG 1051 x AL BANDEIRANTE, the most promising for future crosses.

scholarly journals PERFORMANCE OF COMMON BEAN GENOTYPES IN THE REGION OF CAMPO NOVO DO PARECÍS - MT

Nativa ◽  
2018 ◽  
Vol 6 (6) ◽  
pp. 582
Author(s):  
Rosivaldo Hiolanda ◽  
Anderson Morais Kimecz ◽  
Leonardo Cunha Melo ◽  
Flávio Carlos Dalchiavon
Keyword(s):  
Phaseolus Vulgaris ◽  
Grain Yield ◽  
Common Bean ◽  
Study Data ◽  
Agronomic Performance ◽  
Productive Performance ◽  
Good Resistance ◽  
Mato Grosso ◽  
Production Sector ◽  
Pod Number

DESEMPENHO DE GENÓTIPOS DE FEIJÃO PRETO NA REGIÃO DE CAMPO NOVO DO PARECIS - MT O objetivo do trabalho foi avaliar o desempenho agronômico de genótipos de feijão comum, grupo comercial preto, cultivados na região de Campo Novo do Parecis – MT.O ensaio foi instalado e conduzido, entre os meses de fevereiro e maio de 2016 e 2017, na área experimental do setor de produção do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso – IFMT Campus Campo Novo do Parecis, cujas coordenadas geográficas são latitude S 13°40’31’’ longitude O 57°53’31’’ e altitude média de 574 m. O delineamento experimental foi em blocos casualizados, com 12 tratamentos (nove linhagens e três padrões) e três repetições. Foram avaliadas as características agronômicas altura da planta, diâmetro do caule, dias para o florescimento inicial, dias para a maturação fisiológica, número de vagens por planta, número de grãos por vagem, número de grãos por planta, massa de cem grãos e produtividade de grãos. Os dados submetidos à análise de variância e ao teste de média Scott-Knott, ambos a 5% de probabilidade. O feijão comum preto é uma cultura que se desenvolve bem no chapadão do Parecis, permitindo a colheita mecanizada pela boa resistência ao acamamento. A produtividade de grãos pode ser satisfatória, desde que não ocorra estresse hídrico na fase reprodutiva. Entre os genótipos pesquisados, o BRS FP403, CNFP 15697 e CNFP 15684 se destacaram no desempenho produtivo. Para obter um bom rendimento é necessário investimento, pois a cultura é exigente em água.Palavras-chave: melhoramento genético vegetal, Phaseolus vulgaris, valor de cultivo e uso. ABSTRACT: The objective of this work was to evaluate the agronomic performance of common bean genotypes, black commercial group, grown in the region of Campo Novo do Parecis, state of Mato Grosso. The experiment was set and conducted from February to May 2016/ 2017 in the experimental area of the production sector of the Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso – IFMT Campus Campo Novo do Parecis, at the geographical coordinates 13°40’31” S latitude and 57°53’31” W longitude and an average elevation of 574 m. The experimental design was complete randomized, with 12 treatments (nine lines and three standards) and three replications. Plant height, stem diameter, days for initial flowering, days for physiological maturation, number of pods per plant, number of grains per pod, number of grains per plant, mass of one hundred grains and grain yield were evaluated in this study. Data were submitted to analysis of variance and to the Scott-Knott mean test, both at 5% probability. Black common bean is a crop that grows well on the Parecis’s region, allowing mechanized harvesting for good resistance to lodging. Grain yield may be satisfactory as long as there is no water stress in the reproductive phase. Among the evaluated genotypes, the BRS FP403, CNFP 15697 and CNFP 15684 showed good productive performance. Investment is necessary to achieve a good yield because the crop is demanding in water.Keywords: cultivation value and use, genetic plant breeding, Phaseolus vulgaris.

scholarly journals Agronomic performance and genotypic diversity for morphological traits among early maize genotypes

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Bhim Nath Adhikari ◽  
Jiban Shrestha ◽  
Bishal Dhakal ◽  
Bishnu Prasad Joshi ◽  
Naba Raj Bhatta
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Zea Mays L ◽  
Genotypic Diversity ◽  
Agronomic Performance ◽  
Breeding Programs ◽  
Maize Germplasm ◽  
Maize Genotypes ◽  
Ear Height

Detailed information on the genetic diversity between maize germplasm (Zea mays L.) is useful for their systematic and efficient use in breeding programs. Fourteen early maize genotypes were studied to assess their performance and genotypic diversity at Doti, Nepal in 2015. Days to tasseling, days to silking, plant height, ear height, ear length, ear diameter and grain yield were significant among genotypes. Genotype SO3TEY-PO-BM, COMPOL-NIOBP and ACROSS-99402 were found higher yielder with earlier maturity. Days to tasseling (0.85), days to silking (0.82), plant height (0.79), ear length (0.71) and ear diameter (0.66) were found highly heritable traits. Grain yield (0.39) and ear height (0.47) medium and remaining traits showed low heritability. High PCV was observed for grain yield (35.10%), number of plants/plot (34.46%), tesseling silking interval (26.85%), harvested ears/plot (24.45%) and husk cover rating (22.85%) where other traits showed medium to low PCV. Grain yield showed high GCV (21.96%), ear height and husk cover had medium and remaining traits showed low GCV (<10%). Plant height (r₌0.498), harvested plants/plot (r₌0.412), harvested ear/plot (r₌0.762), ear length (r₌0.472) and ear diameter (r₌0.470) showed significant positive correlation with grain yield. The yield can be improved if selection applied in favor of those yield components.

scholarly journals Agronomic performance and severity of common rust in maize under different nitrogen sources

2020 ◽  
Vol 11 (4) ◽  
Author(s):  
Hélcio Duarte Pereira ◽  
Renzo Garcia Von Pinho ◽  
Ivan Vilela Andrade Fiorini ◽  
Ewerton Lélys Resende ◽  
Felipe Ribeiro Resende ◽  
...  
Keyword(s):  
Grain Yield ◽  
Ammonium Sulfate ◽  
Plant Height ◽  
Block Design ◽  
Nitrogen Sources ◽  
Conventional Tillage ◽  
Agronomic Performance ◽  
Rust Disease ◽  
Tillage Systems ◽  
Minimum Tillage

Nitrogen is the most required and complex management element in maize crop, promoting the highest responses in crop yield. The objective of this work was to verify the effect of different N sources on topdressing in minimum tillage and conventional tillage systems on the agronomic performance of the Pioneer 32R22YHR single cross and on the severity of common rust disease. Two experiments were carried out in a randomized block design (DBC) in the 2013/14 crop in minimum tillage and conventional tillage systems. The treatments were: control without nitrogen, ammonium sulfate, urea, ammonium nitrate, a physical mixture of nitrate (70%) and ammonium sulfate (30%) and a chemical mixture of these same sources in the same proportion just explained. Nitrogen sources had no significant effect on plant height, ear insertion height, ear prolificacy, grain yield and leaf severity of common rust, regardless of the sowing system. Under conventional tillage, the plants presented higher plant height, ear insertion and grain yield. There was no effect of sowing systems on prolificacy. With the exception of nitrogen free treatment, for all others, the severity of common rust was higher in minimum tillage system.

scholarly journals Response of rice cultivars to nitrogen in upland conditions

Revista CERES ◽  
2013 ◽  
Vol 60 (1) ◽  
pp. 86-95 ◽  
Author(s):  
Fábio Luiz Checchio Mingotte ◽  
Renata Kimie Hanashiro ◽  
Domingos Fornasieri Filho
Keyword(s):  
Grain Yield ◽  
Production Systems ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Sprinkler Irrigation ◽  
World Population ◽  
Agronomic Performance ◽  
Rice Cultivars ◽  
Nitrogen Levels ◽  
Upland Conditions

Against the background of a growing world population, rice (Oryza sativa L.) consumption is expected to grow faster than its production. Therefore, an appropriate question would be: how to increase productivity in the short-term? In this respect, it becomes important the implementation of modern agricultural production systems, such as upland rice with supplemental sprinkler irrigation. Additional information is needed to maximize the available resources, with special attention given to research on the use of nitrogen. This study aimed to evaluate the agronomic performance of commercial rice cultivars with different plant characteristics in upland conditions with supplemental sprinkler irrigation, when subjected to nitrogen in topdress application at the R1 stage (panicle differentiation). The experiment was arranged in a randomized block with split plot design, with 65 treatments, consisting of the combination of 13 cultivars in the plots, and five nitrogen levels in the subplots (0, 40, 80, 120 and 160 kg ha-1), with four replications. Genetic variability was detected among rice cultivars and the agronomic performance in response to the applied nitrogen. The topdressing application of nitrogen increases, in general, the production components and grain yield in rice. Cultivars BRS Primavera, Caiapó and IAC 202 stood out for grain yield, followed by Baldo, Carnaroli, BRS Curinga and IAC 500 with lower yields.

scholarly journals Agronomic Performance and Multivariate Analysis Applied to Three-Waycross Maize Hybrids

2018 ◽  
Vol 10 (5) ◽  
pp. 319
Author(s):  
Tiago Corazza da Rosa ◽  
Ivan Ricardo Carvalho ◽  
Vinicius Jardel Szareski ◽  
Alan Junior de Pelegrin ◽  
Mauricio Horbach Barbosa ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Grain Yield ◽  
Plant Height ◽  
Phenotypic Variability ◽  
Agronomic Performance ◽  
Maize Hybrids ◽  
Maize Grain Yield ◽  
Canonical Variables ◽  
Growing Environment ◽  
Maize Grain

The aim of this wok was to evaluate the agronomic performance of three-waycross maize hybrids grown in different environments, to determine linear associations and to employ multivariate analysis for the measured traits. The experimental design used was randomized blocks in factorial scheme, arranged in three replicates. The three-way cross maize hybrids evaluated evidence phenotypic variability for the traits spike diameter, spike length, number of rows with grains, number of grains per row, cob mass and spike grains mass. The growing environment of Campos Borges-RS favors the increment of spike diameter, number of grains per row, spike mass, cob diameter, cob mass, mass of a thousand grains, spike grains mass and grain yield. Significant interactions between three-way cross maize hybrids and growing environments are verified for plant height, spike insertion height and prolificity. The traits spike diameter, mass of a thousand grains and mass of grains per spike present positive correlation with maize grain yield. The distinction of three-way cross hybrids is based on spike insertion height, spike diameter, plant height and mass of a thousand grains. The hybrids 2B688 HX® and 2A55 HX® are genetically closer, according to the biometric approach of canonical variables.

scholarly journals Agronomic Performance of Corn Cultivars in Low-Altitude in the Cerrado-Amazon Ecotone

2020 ◽  
pp. 126-133
Author(s):  
Weder Ferreira dos Santos ◽  
Lara Rythelle Souza Bequiman ◽  
Lucas Carneiro Maciel ◽  
Joênes Mucci Peluzio ◽  
Osvaldo José Ferreira Júnior ◽  
...  
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Agronomic Performance ◽  
Grain Production ◽  
Open Pollination ◽  
The South ◽  
Corn Hybrids ◽  
Ear Height ◽  
Low Altitude

e of this study was to evaluate the agronomic performance of corn cultivars for grain production in the south at low altitude in the Cerrado-Amazon ecotone. Place: The research was carried out at Sítio Vitória (8°18'32.0"S, 50°36'58.0"W, 278 MASL), in the south of the state of Pará, Brazil. Study Design: The experimental design was randomized blocks with twelve treatments and three replications. The treatments were eight corn hybrids: AG 1051, AG 8088, BM 3051, BR 2022, BR 205, BR 206, BRS 3046 and PR 27D28; and four open pollination populations: AL BANDEIRANTE, ANHEMBI, CATIVERDE and M 274. Methodology: Sowed on January 28, 2019. The following characteristics were evaluated: ear height, plant height, number of grains per row, ear diameter, ear length, ear weight and grain yield. Results: The cultivars showed a difference for all traits. The grain yield of the cultivars ranged from 4,567 kg ha-1 (BR 205) to 9,450 kg ha-1 (AG 1051). Conclusion: The hybrids AG 1051 and BM 3051 were the ones that stood out the most, had the best performance in the Cerrado-Amazon ecotone.

scholarly journals AGRONOMIC PERFORMANCE OF CORN IN FUNCTION OF METHODS OF APPLICATION AND DOSES INOCULATED WITH Azospirillum brasilense

2020 ◽  
Vol 19 ◽  
pp. 16
Author(s):  
IVAN VILELA ANDRADE FIORINI ◽  
MAURÍCIO ESCOBAR TONIAL ◽  
CASSIANO SPAZIANI PEREIRA ◽  
DANIELE CRISTINA COSTA SABINO ◽  
IARA GARCÊS DIAS ◽  
...  
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Dry Mass ◽  
Leaf Nitrogen ◽  
Agronomic Performance ◽  
Application Methods ◽  
Bovine Gelatin ◽  
Plant Plant

Nitrogen supplementation becomes necessary when trying to increase yields of off-season corn crop grown in rotation with early-maturing soybean crop. Biological nitrogen fixation helps reduce the use of nitrogen fertilizers through the inoculation of nitrogen-fixing associative bacteria, such as those of the genus Azospirillum. This study aimed to evaluate the agronomic performance of corn hybrid DKB390Y in response to different application methods as the inoculant and doses of inoculant with Azospirillum brasiliense. The experiment was conducted in a property adjacent to Federal University of Mato Grosso (Sinop campus), between February and July 2018. The experimental design included randomized blocks in a 3×5 factorial arrangement, replicated four times, thereby totaling 60 plots (with three application methods: foliar spraying, spraying foliar with bovine gelatin, and with a paint roller [Black Decker Rapid Roller BDPR400-wool] and five doses of inoculant: 0, 100, 200, 400 and 800 mL ha-1). No differences in chlorophyll content at the bottom of the plant, plant height, and leaf area index were observed when varying the application methods. However, leaf nitrogen level, dry mass and grain yield changed when the application method used for inoculation changed. When evaluating doses, the control was found to be superior to the other treatments based on chlorophyll content at the bottom of the plant, plant height,leaf area, leaf nitrogen, and dry mass values. Grain yield was found to be superior with foliar inoculation at 100 mL ha-1 method foliar spray and 200 mL ha-1 methods foliar application with bovine gelatin.

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