scholarly journals Weed coexistence in carioca bean inoculated

2022 ◽  
Vol 43 (2) ◽  
pp. 855-868
Author(s):  
Hugo Franciscon ◽  
◽  
Neumárcio Vilanova da Costa ◽  
Priscila Weber Franciscon ◽  
Edmar Soares de Vasconcelos ◽  
...  
Keyword(s):  
Experimental Design ◽  
Common Bean ◽  
Field Conditions ◽  
Bean Plant ◽  
Rhizobium Tropici ◽  
Weed Interference ◽  
Common Bean Plant

The supply of nitrogen (N) to the carioca bean plant via inoculation with Rhizobium tropici can prevent competition with the weed community by allowing the crop to absorb the nutrient available in the soil. On this basis, this study proposes to examine the period before weed interference (PBI) in the carioca bean plant following inoculation with R. tropici or N topdressing. The experiments were carried out under field conditions during the summer seasons of 2014 and 2015. A randomized-block experimental design with four replicates was adopted, in a 2 × 11 factorial arrangement (common bean plant inoculated or topdressed with N × 11 periods of coexistence with weeds, namely, 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, or 90 days after emergence [DAE]). Nitrogen topdressing increased the crop's tolerance to coexist with weeds from 6 to 14 DAE, compared with inoculation with R. tropici The PBI for the inoculated common bean plant was 24 and 16 DAE in the years 2014 and 2015, respectively. For the N-topdressed plant, the PBI was 30 DAE in both years.

RHIZOBIAL INOCULATION AND P FERTILIZATION RESPONSE IN COMMON BEAN (PHASEOLUS VULGARIS) UNDER GLASSHOUSE AND FIELD CONDITIONS

2007 ◽  
Vol 43 (1) ◽  
pp. 67-77 ◽  
Author(s):  
M. ZAMAN-ALLAH ◽  
B. SIFI ◽  
B. L'TAIEF ◽  
M. H. EL AOUNI ◽  
J. J. DREVON
Keyword(s):  
Nitrogen Fixation ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Symbiotic Nitrogen Fixation ◽  
Field Conditions ◽  
Nutrient Deficiencies ◽  
P Fertilization ◽  
Rhizobium Tropici ◽  
Symbiotic Efficiency ◽  
Rhizobial Inoculation

Osmotic constraints, nutrient deficiencies, especially phosphorus, and the lack of efficient strains of rhizobia in Mediterranean soils are major factors limiting symbiotic nitrogen fixation and yield in common bean (Phaseolus vulgaris). In order to improve yields, we investigated responses to rhizobial inoculation and P fertilization under glasshouse and field conditions with two bean cultivars, Coco blanc and BAT477. The nodulation test, using a hydroponic system in a glasshouse, revealed strong variability among 22 rhizobium strains of various origins, in their symbiotic efficiency, compared with Rhizobium tropici CIAT899. The introduced strains proved to be more efficient although some local rhizobia revealed high potential efficiencies. Glasshouse trials showed a significant effect of inoculation and P supply on nodulation, N content and shoot dry weight that varied with rhizobial strain. Field trials substantiated the glasshouse observations and emphasized the effects of cultivar-rhizobia interactions on symbiotic parameters and yields. It is concluded that inoculation with suitable rhizobia with supply of additional P is a technology that may improve symbiotic nitrogen fixation and yield in common bean in some soils under a Mediterranean climate.

scholarly journals Effect of Biological, Chemical and Physical Agents on Common Bean Plant under Saline Conditions

2020 ◽  
Vol 11 (7) ◽  
pp. 609-616
Author(s):  
Abeer I. Shabana ◽  
Doaa Mostafa ◽  
M. A. M. Abd El-Hady
Keyword(s):  
Common Bean ◽  
Bean Plant ◽  
Common Bean Plant

scholarly journals Selection for hypocotyl diameter results in genetic gain in common bean plant architecture

2018 ◽  
Vol 18 (4) ◽  
pp. 417-425
Author(s):  
Rafael Silva Ramos dos Anjos ◽  
Nerison Luís Poersch ◽  
Lorena Guimarães Batista ◽  
Lisandra Magna Moura ◽  
José Eustáquio de Souza Carneiro ◽  
...  
Keyword(s):  
Common Bean ◽  
Genetic Gain ◽  
Plant Architecture ◽  
Bean Plant ◽  
Common Bean Plant ◽  
Selection For

scholarly journals Weed Interference Periods and Transplanting Densities of Onion Crop in the Brazilian Region of Guarapuava, PR1

2016 ◽  
Vol 34 (2) ◽  
pp. 299-308 ◽  
Author(s):  
J.I. SOUZA ◽  
A.A.P. SILVA ◽  
R.R. CHAGAS ◽  
A.M. OLIVEIRA NETO ◽  
C.D.G. MACIEL ◽  
...  
Keyword(s):  
Experimental Design ◽  
Field Conditions ◽  
Critical Periods ◽  
Weed Interference ◽  
Weeds Control ◽  
Plantation Density

ABSTRACT The study was conducted with the objective of determining the critical periods of interference prevention (CPIP) and the best period for the management of weeds community in onion crop Crioula Mercosul genotype, transplanted in distinct plants densities. The experiment was carried out in field conditions in the Brazilian municipality of Guarapuava, Paraná State, during the 2012 and 2013 agricultural years, at Universidade Estadual do Centro-Oeste - UNICENTRO. Treatments were disposed in randomized complete blocks and experimental design, with five repetitions, consisting of weeds coexistence periods and weeds control at 14, 28, 56, 112 and 168 days after transplanting the seedlings (DATS), using 0.6, 0.8 and 1.0 million plants ha-1. Weeds community was evaluated through a phytosociological survey at the end of each coexistence period in relation to yield and commercial quality of bulbs. Bulbs yield of transplanted onion was significantly affected by weeds coexistence, reaching 100% of losses. From adjusted models, viability was not observed in increasing plantation density as a practice that may favor the necessary reduction of weeds control. Onion plants transplanted in August 2012 and July 2013 presented CPIP, respectively, of 23 at 76 and 21 at 120 DATS for commercial bulbs yield, and of 20 at 55 and 26 at 112 DATS for total bulbs yield, respectively.

scholarly journals TENSÃO DE ÁGUA NO SOLO E DOSES DE NITROGÊNIO PARA A CULTURA DO FEIJOEIRO COMUM

Irriga ◽  
2009 ◽  
Vol 14 (4) ◽  
pp. 518-532 ◽  
Author(s):  
Marcio José de Santana ◽  
Amanda Letícia da Silveira ◽  
Carlos Roberto de Camargos ◽  
José Carlos Braga
Keyword(s):  
Common Bean ◽  
Soil Water ◽  
Bean Plant ◽  
Water Efficiency ◽  
Nitrogen Levels ◽  
Soil Water Tension ◽  
Common Bean Plant ◽  
Use Efficiency ◽  
The Common ◽  
Water Tension

TENSÃO DE ÁGUA NO SOLO E DOSES DE NITROGÊNIO PARA A CULTURA DO FEIJOEIRO COMUM   Márcio José de Santana1; Amanda Letícia da Silveira1; Carlos Roberto de Camargos2; José Carlos Braga21Instituto Federal de Educação, Ciência e Tecnologia, Triângulo Mineiro, Campus  Uberaba, Uberaba, MG, [email protected] Universitário de Patos de Minas, Faculdade de Ciências Agrárias, Patos de Minas, MG   1 RESUMO Este experimento foi conduzido no campus II do Centro Universitário de Patos de Minas, MG, com o objetivo de avaliar o rendimento do feijoeiro comum, submetido a diferentes tensões de água no solo e doses de nitrogênio. Os tratamentos constaram de quatro tensões de água no solo (10 kPa, 30 kPa, 50 kPa e 70 kPa) e quatro doses de nitrogênio (50 kgha-1, 100 kg ha-1, 150 kg ha-1 e 200 kg ha-1). O delineamento foi em blocos casualizados, em esquema fatorial de 4x4 com três repetições. Foram avaliados: produtividade, número de vagens por planta, número de grãos não colhidos, número de vagens verdes e a eficiência do uso da água. Dentre os resultados pode-se constatar que a maior produtividade física foi verificada quando a irrigação foi efetuada com tensão de 22 kPa e dose de N de 130,5 kg ha-1; a maior eficiência do uso da água foi verificada quando a irrigação foi reposta com a tensão de 37 kPa. UNITERMOS: irrigação, tensiometria, eficiência da água.  SANTANA, M.J. de; SILVEIRA, A.L. da; CAMARGOS, C.R. de; BRAGA, J.C. SOIL WATER TENSION AND NITROGEN LEVELS FOR THE COMMON BEAN PLANT  2 ABSTRACT             This experiment was conducted in the Campus II of the Centro Universitário de Patos de Minas, MG, with the objective of evaluating the yield of common bean plant, submitted to different soil water tension and nitrogen levels. The treatments consisted of four water tension in soil (10 kPa, 30 kPa, 50 kPa e 70 kPa) and four nitrogen (50 kg ha-1, 100 kg ha-1, 150 kg ha-1 e 200 kg ha-1). The experimental design was randomized blocks in factorial scheme of 4x4 with tree repetitions. Crop yield, number of pod per plant, number of unharvested grains, number of green pods and water efficiency cropping were evaluated.  Among the results the physical productivity was when the irrigation was effectuated by tension of 22 kPa and N of 130.5 kg ha-1; the greatest  value for water use efficiency was irrigation tension of 37 kPa. KEYWORDS: irrigation, tensiometry, efficiency of water.  

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