Improved production systems for common bean on Phaeozem soil in South-Central Uganda

The growing demand for energy from renewable sources increasingly seeks to implement efficient energy production systems. Thus, the objective of this work is to determine the thermal efficiency of an aquatubular boiler that will burn the bagasse from four sugarcane cultivars: SP 80-1816, RB72-454, SP80-3280 and SP81-3250. This efficiency will be determined through the calculation methods: PCI - lower calorific value, PCS - higher calorific value and direct method. These cultivars were planted in the south-central region of Brazil where the largest sugar cane producers in the country are located. The results obtained show the importance of the energy analysis that each cultivar provides for energy cogeneration, as well as the benefits that will directly influence its production chain for controlled management. Among the benefits of controlled management are: maximizing processes and optimizing the energy use of each cultivar. The optimum efficiency of the boiler in energy production in relation to steam production depends on the intrinsic variables of each cultivar, such as bagasse and moisture content. When calculating the boiler efficiency, the SP 80-1816 variety proved to be more advantageous in relation to the others, considering the same characteristics of the production process, planting region, harvest time and the same type of boiler used. Still related to the study, the cultivar SP 80-1816 requires a smaller amount of bagasse in the boiler feed to produce heat, which results in greater energy production considering the same amount of bagasse of the studied varieties.

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DESENVOLVIMENTO DE Agave sisalana Perrine SOB DIFERENTES MANEJOS DE ADUBAÇÃO E CONSÓRCIO

Colloquium Agrariae ◽

10.5747/ca.2018.v14.n4.a247 ◽

2018 ◽

Vol 14 (4) ◽

pp. 39-46

Author(s):

Ana Beatriz Torres Melo de Freitas ◽

Annie Maia Batista Santos ◽

João Paulo de Oliveira Santos ◽

Jardel da Silva Souza ◽

Fábio Mielezrski

Keyword(s):

Common Bean ◽

Technology Use ◽

Production Systems ◽

Block Design ◽

Organic Chemical ◽

Initial Growth ◽

Organic Fertilization ◽

Initial Development ◽

Semi Arid Region ◽

Agave Sisalana

The Sisal (Agave sisalana Perrine) is a crop very important for the semi-arid region of Brazil, constituting an important source of income in regions that lack options that help in their development. However, studies regarding the development of this crop are scarce, reflecting on the low technology use and ancient practices used in the production systems. Theobject of this studywas to evaluated the initial growth development of plants of Sisal (Agave sisalana Perrine) under different sources of chemical and organic fertilization and presence and absence of intercropping with common bean (Phaseolus vulgaris), in the city of Areia, Paraíba. The experiment was carried out in a randomized complete block design (RCBD), in a 2x3 factorial scheme, composed of two cultivation systems (alone or intercropped) and three fertilizationtypes (organic, chemical and no fertilization), totaling 24 treatments with four replications in an area of 25 m² each. The results showed an influence effect of the source of fertilization and the intercroppingon the initial development of the crop, and the best results obtained were with the organic fertilization and the intercropping with common bean.

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Plant and seed nutrient uptake in common bean in seven organic and conventional production systems

Canadian Journal of Plant Science ◽

10.4141/cjps10114 ◽

2011 ◽

Vol 91 (6) ◽

pp. 1089-1099 ◽

Cited By ~ 7

Author(s):

Dale Westermann ◽

Henry Terán ◽

Carlos Muñoz-Perea ◽

Shree Singh

Keyword(s):

Common Bean ◽

Nutrient Uptake ◽

Production Systems ◽

Block Design ◽

Dry Bean ◽

Whole Plant ◽

Randomized Complete Block Design ◽

Conventional Production ◽

On Farm ◽

Uptake Of Nutrients

Westermann, D. T., Terán, H., Muñoz-Perea, C. G. and Singh, S. P. 2011. Plant and seed nutrient uptake in common bean in seven organic and conventional production systems. Can. J. Plant Sci. 91: 1089–1099. Knowledge of plant and seed nutrient uptake by crop cultivars in organic and conventional production systems (PS) is essential for breeding the most appropriate genotypes for each PS. The objective was to determine the plant and seed uptake of nitrogen (N), phosphorus (P), potassium (K), copper (Cu), manganese (Mn), and zinc (Zn) by 16 common bean genotypes. We also identified genotypes efficient in plant and seed nutrient uptake across seven organic and conventional PS. A randomized complete block design with four replicates (one plot per replicate) was used for evaluation in each of seven organic and conventional PS in 2003 and 2004. The effects of plant and seed uptake of nutrients, genotypes, PS, and the genotype × PS interaction were significant (P≤0.05). Plant and seed uptake of nutrients decreased in on-station continual dry bean and drought-stressed and on-farm organic low-input compared with on-station conventional irrigated and on-farm organic high-input PS. Common bean genotypes with higher biomass yield, in general, also had higher nutrient uptake, regardless of PS. In general, N and P uptakes were high and that for Mn was markedly low among common bean genotypes. Pinto CO46348, Bill Z, and Othello and Mexican red NW-63 and UI 239 were high-yielding and used nutrients more efficiently across seven organic and conventional PS and years. Other cultivars either had low biomass and seed yield (e.g., Common Pinto, Topaz, Common Red Mexican, UI 59) or were more efficient at whole-plant uptake or seed uptake of nutrients, but not both (e.g., Matterhorn, UI 465). Use of the above five genotypes should be maximized for production in both organic and conventional PS, and for breeding high-yielding broadly adapted cultivars efficient in plant and seed nutrient uptake in organic and conventional PS.

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Improving sustainability of common bean production systems by co-inoculating rhizobia and azospirilla

Agriculture Ecosystems & Environment ◽

10.1016/j.agee.2016.12.040 ◽

2017 ◽

Vol 237 ◽

pp. 250-257 ◽

Cited By ~ 17

Author(s):

José Eduardo Barbosa de Souza ◽

Enderson Petrônio de Brito Ferreira

Keyword(s):

Common Bean ◽

Production Systems

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Control of glyphosate/glufosinate-resistant volunteer corn in corn resistant to aryloxyphenoxypropionates

Weed Technology ◽

10.1017/wet.2020.41 ◽

2020 ◽

Vol 34 (3) ◽

pp. 309-317

Author(s):

Adam Striegel ◽

Nevin C. Lawrence ◽

Stevan Z. Knezevic ◽

Jeffrey T. Krumm ◽

Gary Hein ◽

...

Keyword(s):

Field Experiments ◽

Yield Loss ◽

Production Systems ◽

Yield Reduction ◽

Corn Production ◽

Application Timing ◽

Orthogonal Contrasts ◽

South Central ◽

Resistance Trait ◽

Volunteer Corn

AbstractCorn-on-corn production systems, common in highly productive irrigated fields in South Central Nebraska, can create issues with volunteer corn management in corn fields. EnlistTM corn is a new multiple herbicide–resistance trait providing resistance to 2,4-D, glyphosate, and the aryloxyphenoxypropionate herbicides (FOPs), commonly integrated in glufosinate-resistant germplasm. The objectives of this study were to (1) evaluate ACCase-inhibiting herbicides for glyphosate/glufosinate-resistant volunteer corn control in Enlist corn and (2) evaluate the effect of ACCase-inhibiting herbicide application timing (early POST vs. late POST) on volunteer corn control, Enlist corn injury, and yield. Field experiments were conducted in 2018 and 2019 at South Central Agricultural Laboratory near Clay Center, NE. Glyphosate/glufosinate-resistant corn harvested the year prior was cross-planted at 49,000 seeds ha–1 to mimic volunteer corn in this study. After 7 to 10 d had passed, Enlist corn was planted at 91,000 seeds ha–1. Application timing of FOPs (fluazifop, quizalofop, and fluazifop/fenoxaprop) had no effect on Enlist corn injury or yield, and provided 97% to 99% control of glyphosate/glufosinate-resistant volunteer corn at 28 d after treatment (DAT). Cyclohexanediones (clethodim and sethoxydim; DIMs) and phenylpyrazolin (pinoxaden; DEN) provided 84% to 98% and 65% to 71% control of volunteer corn at 28 DAT, respectively; however, the treatment resulted in 62% to 96% Enlist corn injury and 69% to 98% yield reduction. Orthogonal contrasts comparing early-POST (30-cm-tall volunteer corn) and late-POST (50-cm-tall volunteer corn) applications of FOPs were not significant for volunteer corn control, Enlist corn injury, and yield. Fluazifop, quizalofop, and fluazifop/fenoxaprop resulted in 94% to 99% control of glyphosate/glufosinate-resistant volunteer corn with no associated Enlist corn injury or yield loss; however, quizalofop is the only labeled product as of 2020 for control of volunteer corn in Enlist corn.

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Seroprevalence and awareness of porcine cysticercosis across different pig production systems in south-central Cambodia

Parasite Epidemiology and Control ◽

10.1016/j.parepi.2017.10.003 ◽

2018 ◽

Vol 3 (1) ◽

pp. 1-12 ◽

Cited By ~ 3

Author(s):

Aderosoye Adenuga ◽

Ana Mateus ◽

Chhay Ty ◽

Khieu Borin ◽

Davun Holl ◽

...

Keyword(s):

Production Systems ◽

Pig Production ◽

Porcine Cysticercosis ◽

South Central

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Climate change determined drought stress profiles in rainfed common bean production systems in Brazil

Agricultural and Forest Meteorology ◽

10.1016/j.agrformet.2017.06.005 ◽

2017 ◽

Vol 246 ◽

pp. 64-77 ◽

Cited By ~ 9

Author(s):

Alexandre Bryan Heinemann ◽

Julian Ramirez-Villegas ◽

Luís Fernando Stone ◽

Agostinho Dirceu Didonet

Keyword(s):

Climate Change ◽

Drought Stress ◽

Common Bean ◽

Production Systems ◽

Stress Profiles

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Genetic Variation and Trait Correlations for Fruit Weight, Firmness and Color Parameters in Wild Accessions of Fragaria chiloensis

Agronomy ◽

10.3390/agronomy9090506 ◽

2019 ◽

Vol 9 (9) ◽

pp. 506 ◽

Cited By ~ 3

Author(s):

Freddy Mora ◽

Paz Zúñiga ◽

Carlos Figueroa

Keyword(s):

Genetic Variation ◽

Genetic Correlation ◽

Production Systems ◽

Fruit Production ◽

Fruit Weight ◽

Color Parameters ◽

South Central ◽

Fragaria Chiloensis ◽

Credible Region ◽

Credible Set

Fragaria chiloensis is an herbaceous perennial undomesticated species with a high potential for sustainable fruit production in areas where drought and salinity represent a constraint on crop growth and productivity. The present study aimed to examine the genetic variability of fruit weight, firmness and color parameters (L*, a*, b*, Hue angle and Chroma) in wild-collected accessions from south-central Chile. A Bayesian analysis of genetic parameters showed that the traits under study were found to be moderately to highly heritable with estimates from the marginal posterior distributions ranging between 0.26 (firmness) and 0.67 (L*). Interestingly, Hue and Chroma had relatively high values of broad-sense heritability, with the Bayesian credible set: H 2 = 0.53–0.76 and H 2 = 0.42–0.66, respectively. A Bayesian bi-trait analysis showed a positive genetic correlation ( r ^ g = 0.65, probability of the posterior samples <0.05) between fruit weight and Hue, which agreed with the existence of two pleiotropic loci [from simple sequence repeats (SSR) markers FvH4045 and CFACT084 on linkage groups FG3A and FG2A/2B/2C] with probabilities of the posterior estimates of 0.022 and <0.001, respectively. According to the Bayesian credible region, 5 (of 12) correlation estimates were significantly different from zero. Hue and Chroma showed a high and negative genetic correlation ( r ^ g = −0.762), but no significant pleotropic locus. The results are promising and suggest that the genetic variation found among wild populations of F. chiloensis supports the idea of domesticating this crop for sustainable fruit production systems.

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