scholarly journals Comportamiento agronómico de variedades de avena (Avena sativa L.), con niveles de hoja de coca (Erythroxylum coca) molida como abono verde en Kallutaca, La Paz

2021 ◽  
Vol 8 (1) ◽  
pp. 17-24
Author(s):  
Eddy Diego Gutiérrez Gonzales ◽  
Octavio Mártir Coria Garcia ◽  
Verónica Elisa Condori Murga
Keyword(s):  
Plant Height ◽  
Avena Sativa ◽  
Green Manure ◽  
Dry Matter ◽  
Block Design ◽  
Agronomic Performance ◽  
Dry Matter Yield ◽  
La Paz ◽  
Differential Behavior ◽  
Randomized Block Design

In the Central Altiplano of Bolivia, the production of forage oats is important for the feeding of herbivorous livestock; however, the yields obtained at the producer level register low averages in dry matter. The objective was to evaluate the agronomic performance of three oat varieties, with levels of ground coca leaf as green manure, at the Kallutaca Experimental Center in the department of La Paz. A randomized block design was applied with a divided plot arrangement with four replications. The factors were oat varieties (Aguila, Gaviota and Texas) and levels of ground coca (0, 30 and 60 t ha-1), with variables days to emergence, number of tillers, plant height and dry matter yield. The results at days to emergence show differences in time 60 and 0 t ha-1 with 14 and 11 days. In relation to the number of tillers per plant, in varieties the behavior is similar with an average of 7 tillers; in relation to interaction, the values show significance. In plant height, the means recorded for the Texas variety were 137.10 cm, in the interaction the values were equal. In dry matter, there were significant differences in 60 and 30 t ha-1 with 16 427.27 and 15 281.82 kgDM ha-1, the Gaviota variety with 14 706.06 kgDM ha-1. The treatments influenced the agronomic behavior of the variables studied, the levels of green manure affected oat yield, mainly the number of tillers, which in turn affected the dry matter yield, finally the oat varieties have a differential behavior with the change in the levels of green manure.

scholarly journals Effect of Date of Planting and Plant Geometry on Growth and Yield Characters of Kalmegh cv. CIM Megha

2019 ◽  
pp. 1-5
Author(s):  
Mahender Pal ◽  
Vijay Kumar ◽  
A. P. Singh ◽  
R. S. Singh ◽  
M. D. Ojha ◽  
...  
Keyword(s):  
Plant Height ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Dry Matter Yield ◽  
Plant Spacing ◽  
Factor B ◽  
Planting Geometry ◽  
Randomized Block Design ◽  
Growing Conditions

The experiment was laid out in Factorial Randomized Block design assigning time of planting (Factor A), planting geometry (Factor B) with four replications to assess the effect of date of planting and planting geometry on growth and yield of Kalmegh cv. CIM Megha. The experiment was conducted at Experimental farm, Nalanda College of Horticulture, Noorsarai, Nalanda (Bihar Agricultural University, Sabour) in the year 2013-14 and 2014-15. Factor A consisted of three time of planting viz., 15th May, 01st June and 15th June and factor B consisted of two levels of spacing S1 (30 x15 cm) and S2 (30 x20 cm). Pooled data on different growth and yield characters revealed 15th June as  best time of planting of Kalmegh and proclaimed highest values for plant height (75.46 cm), Plant girth (7.69 mm), no. of secondary branches, no. of leaves per plant and total dry matter yield (31.75 q/ha) . on the other hand spacing level of  S2 (30x20 cm) also recorded highest values for plant height (68.75 cm), plant girth (7.75 mm), no. of secondary branched/plant, no. of leaves/plant and total dry matter yield (27.38 q/ha). The treatment combination of 15th June as time of planting and plant spacing of 30 x20 cm found best for planting of Kalmegh in the growing conditions of the Nalanda. It was followed by planting time 15th June and plant spacing of 30x 15 cm for higher growth and yield of Kalmegh.

scholarly journals Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

2015 ◽  
Vol 87 (4) ◽  
pp. 2301-2307 ◽  
Author(s):  
MATHEUS G. SILVA ◽  
ORIVALDO ARF ◽  
PAULO E. TEODORO
Keyword(s):  
Common Bean ◽  
Weed Control ◽  
Yield Components ◽  
Dry Matter ◽  
Block Design ◽  
Agronomic Performance ◽  
Randomized Block Design ◽  
Bean Yield ◽  
Leaf N Content ◽  
Leaf N

ABSTRACT The objective of this study was to investigate the effect of interaction between nitrogen topdressing and different application ways (active ingredients) a.i. fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean. The experiment was conducted during winter 2003 in Selvíria/MS. The experimental design used was a randomized block design with four replications in a factorial scheme 2x7. The first factor was composed by the absence or presence of nitrogen topdressing, while the second factor consisted of different application ways of fluazifop-p-butyl + fomesafen. The following variables were measured: leaf N content, dry matter of plants, yield components (number of pods plant-1, number of grains plant-1, the average number of grains pod-1 and mass of 100 grains), grain yield, phytotoxicity and weed control percentage. The nitrogen topdressing with 75 kg ha-1provided higher dry matter of plants, higher weed control and higher common bean yield of irrigated winter. In the absence of nitrogen topdressing in the application of urea before or together to fluazifop-p-butyl + fomesafen increased their effectiveness in controlling weeds without interference in the agronomic performance of common bean.

scholarly journals DIFFERENT STABILITY METHODS FOR CULTIVAR RECOMMENDATION IN ELEPHANT-GRASS FOR ENERGY PURPOSES IN BRAZIL

CERNE ◽  
2017 ◽  
Vol 23 (4) ◽  
pp. 507-515 ◽  
Author(s):  
Veronica Brito da Silva ◽  
Rogerio Figueiredo Daher ◽  
Bruna Rafaela da Silva Menezes ◽  
Maria Lorraine Fonseca Oliveira ◽  
Maria do Socorro Bezerra Araújo ◽  
...  
Keyword(s):  
Energy Production ◽  
Dry Matter ◽  
Block Design ◽  
Dry Matter Yield ◽  
Elephant Grass ◽  
Randomized Block Design ◽  
Matter Production ◽  
Breeding Programmes ◽  
The Stability ◽  
Non Parametric

ABSTRACT The elephant-grass undergoes successive cutting and periodical evaluations that it possible to identify clones with high stability for dry matter production, which can be used for energy production. The present study was carried out to evaluate stability dry matter yield for different parametric and non-parametric methods in elephant grass genotypes for biomass production undergoes successive cutting in the agroclimatic conditions of the Norte Fluminense (RJ, Brazil). The variable measured in the 40 genotypes was dry matter yield (DMY) at 2009, 2010 and 2011 in a field study designed as randomized block design with two replicates. Each sample was grown in different environment condition. The stability methods tested were the Yates and Cochran’s, Plaisted and Peterson’s, Wricke’s ecovalence, Annicchiarico’s, Lin and Binns’ and Kang and Phan’s. Results indicated that cutting (E) and genotypes (G) influenced significantly on the performance of dry matter yield. The non-parametric stability methods were effective for the evaluation of stability in dry matter yield. Genotypes Mercker, Pinda-México, Mercker 86-México, Guaçu/IZ, Mercker Pinda, P-241-Piracicaba and Cubano Pinda were stable stability dry matter yield. Hence, there are genotypes may be exploited in future breeding programmes in order to improve productivity of upland elephant grass over environment.

scholarly journals Yield and vegetative growth of cactus pear at different spacings and under chemical fertilizations

2016 ◽  
Vol 20 (6) ◽  
pp. 564-569 ◽  
Author(s):  
João A. da Silva ◽  
Sérgio L. R. Donato ◽  
Paulo E. R. Donato ◽  
Evilasio dos S. Souza ◽  
Milton C. Padilha Júnior ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Vegetative Growth ◽  
Dry Matter ◽  
Block Design ◽  
Plant Age ◽  
Cactus Pear ◽  
Area Index ◽  
Randomized Block Design

ABSTRACT The objective was to evaluate the effect of different spacings and mineral fertilizations on cactus pear growth and production in a randomized block design, with three replicates, in a 3 x 4 factorial scheme: three spacings, 1.00 x 0.50 m, 2.00 x 0.25 m and 3.00 x 1.00 x 0.25 m, and four fertilizations, 000-000-000, 000-150-000, 200-150-000 and 200-150-100 kg ha-1 of N, P2O5 and K2O, respectively. Plant growth was evaluated between 90 and 390 days and production and growth were evaluated at 620 days after planting. There were significant interactions between spacing and fertilization for plant height, number of cladodes and cladode area index from 90 to 390 days and for production of fresh and dry matter at 620 days after planting. Spacing influenced cladode area index, while fertilization influenced plant height, number of cladodes and cladode area index at 620 days after planting. Plant height showed cubic effect for the days after planting. Number of cladodes and cladode area index were dependent on spacing, fertilization and plant age, and fitted to cubic models. The best results of growth and production of fresh and dry matter are associated with NPK and NP fertilizations and the spacing of 1.00 x 0.50 m.

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 Effect of Gamma Irradiation of Local Brachiaria Ruziziensis (Germain & Evrard) Seeds on Agronomic Performance and Yield

2019 ◽  
Vol 7 (1) ◽  
pp. 09-17
Author(s):  
Ann I. Hoka ◽  
Michael Gicheru ◽  
Syprine Otieno ◽  
Hezekiah Korir
Keyword(s):  
Dry Matter ◽  
Gamma Ray ◽  
Block Design ◽  
Mutation Induction ◽  
Agronomic Performance ◽  
Brachiaria Ruziziensis ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Improved Performance ◽  
Mutant Lines

Appropriate methods of mutation induction are of high importance in pastures for increased genetic variability and improved performance. The objective of this research was to improve the agronomic and nutritive performance of mutant lines (M7) through induced mutagenesis to seeds of a local landrace Brachiaria ruziziensis. The seeds were irradiated with 0, 10, 20, 30 and 40Gy doses of gamma radiation from Cobalt 60 (60Co).  Treatments were; KE 0Gy, KE 10Gy, KE 20Gy, KE 30Gy and KE 40Gy resulting into M1 seeds. The M1 seeds were planted in the greenhouse in germination pots for one month and the seedlings transplanted to the field. Seeds of M6 plants (M7 seeds) were used to establish field experiment in a completely randomized block design, with three replications. Parameters measured included; tillering, leaf-stem ratio, dry matter weight, and seed weight. Data collected was analyzed using the SAS package. Mutant lines exhibited better agronomic performance compared to the wild type. Performance increased with increased gamma-ray exposure with 40Gy treatment outperforming all other treatments whereas the control performed dismally. There was a significant difference (P0.05) in the dry matter with 40Gy treatment having the highest values of dry matter yields, whereas control had the lowest values. Application of nuclear technology to other grasses would lead to increased biomass and improved nutrition for increased animal productivity leading to food and nutrition security.

scholarly journals Effect of Elephant Grass Genotypes to Bioenergy Production

2019 ◽  
pp. 1-11
Author(s):  
Henrique Guimarães De Favare ◽  
Joadil Gonçalves De Abreu ◽  
Livia Vieira de Barros ◽  
Felipe Gomes Da Silva ◽  
Luis Miguel Mendes Ferreira ◽  
...  
Keyword(s):  
Rainy Season ◽  
Dry Matter ◽  
Block Design ◽  
Leaf Length ◽  
Pennisetum Purpureum ◽  
Dry Matter Yield ◽  
Elephant Grass ◽  
Agronomic Characteristics ◽  
Direct Combustion ◽  
Randomized Block Design

The study aimed to evaluate the agronomic characteristics of elephant grass (Pennisetum purpureum Schum.) genotypes on energy production in the combustion form. A randomized block design with 3 repetitions was used. The treatments were arranged in subdivided plots scheme, considering as a plot the genotypes and as subplots, the harvest season. The agronomic characteristics plant height (H), leaf length (LL), leaf blade width (LBW), stem diameter (SD), tillers number (TN), stem percentage (SP), dry matter yield (DMY) were evaluated. The rainy season provided greater H to elephant grass genotypes with height above 3.5 m. The average SP obtained by the genotypes was 68.21% and 67.21% to the first and second year of cultivation, respectively, which gives the biomass good quality of burning. The rainy season provided greater DMY comparing to the dry season. In the first year of cultivation there were genotypes with annual dry matter yield (ADMY) above 50 ton ha-1 year-1, however, the non-maintenance of soil fertility promoted the reduction of 39.17% and 39.05% in the DMY and ADMY, respectively. Analyzing the agronomic characteristics, we conclude that the promising genotypes of elephant grass to produce energy in the form of direct combustion are CNPGL 91-25-1, Cubano Pinda, BRS Canará, Porto Rico and Mercker.

scholarly journals Repeatability estimates and minimum number of evaluations for selection of elephant-grass genotypes for herbage production

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Erina Vitório Rodrigues ◽  
Rogério Figueiredo Daher ◽  
Geraldo de Amaral Gravina ◽  
Alexandre Pio Viana ◽  
Maria do Socorro Bezerra de Araújo ◽  
...  
Keyword(s):  
Plant Height ◽  
Principal Components ◽  
Dry Matter ◽  
Block Design ◽  
Phenotypic Selection ◽  
Stem Diameter ◽  
Dry Matter Yield ◽  
Elephant Grass ◽  
Minimum Number ◽  
Selection Of

In forage-plants breeding, the selection of superior genotypes has been undertaken through successive harvests in previously established intervals. However, this process involves many steps, the evaluation of many traits, and a great spending with costs and labor. Thus the estimate of the repeatability is essential in improvement of perennials, it allows predicting genotypic value of the individual, the minimum number of evaluations in the selection of genotypes and minimizes resources and time in the selection of promising individuals. The objective of this study was to estimate the repeatability coefficient for morphological traits in elephant grass and determine the number of evaluations needed for phenotypic selection more efficient. The experimental randomized block design with 53 genotypes and two replications. The repeatability coefficients were estimated for variables plant height, number of tillers, stem diameter and dry matter yield, using the methods of Anova, Principal Components and Structural Analysis. We observed significant differences between genotypes (P <0.01) for all variables. The main components provide larger estimates of repeatability when compared to other methods. Estimates of the repeatability coefficients are of high magnitude average for the variables plant height (0.44) number of tillers (0.44) and stem diameter (0.63) and low magnitude for dry matter production (0.27). The Principal Components method requires five, five, two and eleven measurements for plant height, number of tillers, stem diameter and dry matter yield, respectively, with 80% reliability.  

scholarly journals Organic cabbage growth using green manure in pre-cultivation and organic top dressing fertilization

2018 ◽  
Vol 36 (4) ◽  
pp. 515-520
Author(s):  
Ana Amélia S Cordeiro ◽  
Marinete B Rodrigues ◽  
Murilo Gonçalves Júnior ◽  
José Antônio A Espíndola ◽  
Ednaldo da S Araújo ◽  
...  
Keyword(s):  
Green Manure ◽  
Block Design ◽  
Dry Mass ◽  
Agronomic Performance ◽  
Maize Population ◽  
Maize Populations ◽  
Randomized Block Design ◽  
Corn Productivity ◽  
Shoot Mass ◽  
Organic Compost

ABSTRACT The experiment was conducted in (Integrated Agroecological Production System in Seropedica-RJ) Sistema Integrado de Produção Agroecológica (SIPA), Seropédica-RJ, to evaluate the effect of two maize populations in relation to baby corn productivity and shoot mass, to determine the contribution of pre-cultivated maize, green velvet and organic topdressing fertilization in the agronomic performance of cabbage (Brassica oleracea var. capitata). The experimental design consisted of randomized blocks with three treatments (maize population of 100,000 and 200,000 plants ha-1 and green velvet at 100,000 plants ha-1) and eight replicates. After that, cabbage was transplanted in the straw of these species, adopting a randomized block design allocated in split plots, totalizing six treatments, being three pre-cultivation practices and two organic topdressing fertilization doses (with or without 50 g fermented organic compost per planting hole). Considering “baby corn” productivity, no differences were observed compared to maize populations, with an average productivity of 822.5 kg ha-1. Green velvet pre-cultivation obtained the highest shoot dry mass (8.4 t ha-1). Cabbage crop was improved by green velvet pre-cultivation, reaching 60.7 t ha-1 and organic topdressing fertilization, reaching 60.4 t ha-1; however, in the presence of green velvet straw, topdressing fertilization did not promote additional yield benefit of this crop. Thus, we noticed that green manure using green velvet increased cabbage productivity, submitted to organic management, when compared to maize pre-cultivation, making it able to replace organic topdressing fertilization.

Screening of cowpea [Vigna unguiculata (L.) Walp.] for aluminiumtolerance in relation to growth, yield and related traits

2017 ◽  
Author(s):  
R. K. Dubey ◽  
J. K. Kushwaha ◽  
A. K. Pandey ◽  
V. Singh ◽  
A. S. Mailappa ◽  
...  
Keyword(s):  
Protein Content ◽  
Plant Height ◽  
Dry Matter ◽  
Plant Root ◽  
Block Design ◽  
Growth Yield ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Weight Yield ◽  
Main Effect

Present study was carried out to screen the cowpea genotypes and to determine the effect of different level of aluminium on morpho-physiological, growth, yield and quality attributes. Twenty cowpea genotypes with four aluminium levels i.e. 0, 20, 40, 60 ppm in three replications was investigated in factorial complete randomized block design. Individual main effect and their interaction effects were studied for plant height at weekly interval, biomass, number of nodule per plant, root length, shoot length, dry matter of root, shoot, leaf, total dry matter, number of pod per plant, pod weight, yield and seed protein content. Cowpea genotypes exhibited significant differences for all 13 observed traits. Aluminium treatment expressed significant differences for all the attributes under study except biomass per plant. However, interaction effect was found to be significant for all studied characters except plant height at all stages. Among the aluminium treatments; observed traits were performing better at 20 ppm of Al, whereas, pod yield and protein content were best under the control.

Sign in / Sign up

Export Citation Format

Share Document