Seed vigor and amount of soybean straw on seedling emergence and productive performance of wheat

The use of high-quality seeds is essential to minimize the possible suppressive effect of straw on seedling emergence, contributing to stand establishment and high grain yield. The aim of this study was to assess the influence of seed vigor associated with soil cover with different amounts of soybean straw on seedling emergence and productive performance of wheat. The experiment was conducted in a greenhouse using two wheat cultivars (CD 150 and BRS Gralha Azul) under a completely randomized design in a 2 × 5 factorial scheme with four replications. Factors consisted of two seed vigor levels (high and low) and five amounts of soybean straw (0, 3, 6, 9, and 12 t ha?1). The following assessments were performed: seedling emergence, dry mass of seedling shoot, number of tillers, plant height, yield components (number of spikes per plant, number of grains per spike, and mass of one thousand seeds), grain yield, and harvest index. The use of high vigor seeds favors the emergence and dry mass production of seedling shoot for both cultivars. The increased amount of soybean straw reduces seedling emergence in both cultivars. In the cultivars CD 150 and BRS Gralha Azul, the amounts of soybean straw of 2.45 and 5.40 t ha?1, respectively, result in a higher wheat grain yield.

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INFLUENCE OF SUGARCANE STRAW AND SOWING DEPTH ON THE EMERGENCE OF WEED SPECIES

Planta Daninha ◽

10.1590/s0100-83582015000300003 ◽

2015 ◽

Vol 33 (3) ◽

pp. 405-412 ◽

Cited By ~ 2

Author(s):

P. V. SILVA ◽

P. A. MONQUERO ◽

F. B. SILVA ◽

N. C. BEVILAQUA ◽

M. R. MALARDO

Keyword(s):

Ricinus Communis ◽

Seedling Emergence ◽

Dry Mass ◽

Weed Species ◽

Sowing Depth ◽

Sugarcane Straw ◽

Randomized Design ◽

Significant Difference ◽

Completely Randomized Design ◽

Luffa Aegyptiaca

ABSTRACT This study aimed to understand the influence of sowing depth and the amount of sugarcane straw on the emergence of weed species Luffa aegyptiaca Miller (Cucurbitaceae); Mucuna aterrima Piper & Tracy (Fabaceae - Leguminosae) and Ricinus communis (Euphorbiaceae). A completely randomized design with a 5 x 4 x 3 factorial layout with four replications was used, at five sowing depths (0, 2, 4, 8 and 10 cm), four different amounts of sugarcane straw (0, 5, 10 and 15 t ha-1) and three different evaluation periods (7, 14 and 21 days after sowing). After sowing, different amounts of sugarcane straw (0, 5, 10 and 15 t ha-1) were deposited on soil. Seedling emergence was analyzed at 7, 14 and 21 days after sowing, counting the number of seedlings that had emerged. At the end of the trial, weed height (cm), leaf area (cm2) and shoot dry mass (g) were measured. In relation to emergence ability, studied species presented different responses according to sowing depth and to the amount of sugarcane straw deposited on the soil. For the L.aegyptiacaand M.aterrima, no significant difference was observed in the interaction between depth and sugarcane straw, showing the adaptation of these species to no-burn sugarcane system. For R.communis, seeds placed at 0 cm of sugar cane straw depth were observed to favor the emergence of seedlings.

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Broccoli yield in response to top-dressing fertilization with green manure and biofertilizer

Revista CERES ◽

10.1590/s0034-737x2011000500016 ◽

2011 ◽

Vol 58 (5) ◽

pp. 645-650 ◽

Cited By ~ 1

Author(s):

Gilberto Bernardo de Freitas ◽

Márcio Sousa Rocha ◽

Ricardo Henrique Silva Santos ◽

Letícia Monteiro da Silva Freitas ◽

Leandro de Almeida Resende

Keyword(s):

Green Manure ◽

Mineral Fertilizer ◽

Dry Mass ◽

Experimental Unit ◽

Productive Performance ◽

Mineral Fertilization ◽

Randomized Design ◽

Protected Cultivation ◽

Completely Randomized Design ◽

Organic Compost

The objective of this work was to evaluate the productive performance of broccoli under different top-dressing organic fertilizations. The experiment was conducted under protected cultivation, in a completely randomized design with four replications, with two plants per experimental unit. Broccoli seedlings were produced in a commercial substrate in styrofoam trays. The seedlings were transplanted to plastic pots containing 10.0 L of substrate made up of subsoil and organic compost at the ratio of 3:1 (v/v), respectively, which is equivalent to about 20.0 t ha-1 of organic compost at planting. After seedling establishment, the top-dressing fertilization treatments were applied: gliricidia biomass associated or not with liquid biofertilizer of cattle manure to the soil and bokashi. Two control treatments were established: one with mineral fertilization recommended for the crop and the other without top-dressing fertilization. The broccoli production was evaluated (commercial standard). Plants that received mineral fertilizer were more productive, however, they were not significantly different (p>0.05), by Dunnet test, from the plants fertilized with 2.5 t ha-1 gliricidiabiomass (dry mass) associated with liquid biofertilizer (2.0 L m-2) applied to soil. Top-dressing fertilizations with only gliricidia, at 2.5 and 5.0 t ha-1 of biomass (dry mass), resulted in no significant increase in production of broccoli inflorescence. The use of bokashi in addition to gliricidia biomass and liquid biofertilizer reduced the efficiency of the fertilization compared with plants that received only gliricidia and liquid biofertilizer.

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Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds

Acta Scientiarum Biological Sciences ◽

10.4025/actascibiolsci.v41i1.46030 ◽

2019 ◽

Vol 41 ◽

pp. e46030

Author(s):

João Everthon da Silva Ribeiro ◽

Arliston Pereira Leite ◽

Jackson Silva Nóbrega ◽

Edna Ursulino Alves ◽

Riselane de Lucena Alcântara Bruno ◽

...

Keyword(s):

Dry Mass ◽

Germination Percentage ◽

Seed Vigor ◽

Randomized Design ◽

Temperature Regimes ◽

Seedling Length ◽

Physiological Quality ◽

Mean Germination Time ◽

Completely Randomized Design ◽

Understory Plant

Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time, seedling length and dry mass (root and shoot). Paper and vermiculite substrates combined with constant temperatures of 20, 25, 30 and alternated between 20-30°C, provide greater seed germination and vigor while 35°C reduces seed physiological quality.

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Seedling length and soybean seed vigor

Ciência Rural ◽

10.1590/0103-8478cr20190495 ◽

2021 ◽

Vol 51 (7) ◽

Author(s):

Michele Renata Revers Meneguzzo ◽

Géri Eduardo Meneghello ◽

Ariele Paula Nadal ◽

Fernanda da Mota Xavier ◽

Simone Morgan Dellagostin ◽

...

Keyword(s):

Seedling Growth ◽

Soybean Seed ◽

Dry Mass ◽

Seed Vigor ◽

Time Interval ◽

Soybean Seedling ◽

Randomized Design ◽

Seedling Length ◽

Completely Randomized Design ◽

The Moment

ABSTRACT: The differentiation of seedling growth and development is the result of the vigor level of the seed lot. Because of this, knowing the seedling growth curve is essential for the evaluation of the seedling length test, to be carried out at the moment when any differences in vigor really manifest, thus being able to reduce the time of evaluation of the test. In this research, the objective was to determine the most efficient time interval to perform the seedling length test in soybean seeds, depending on the vigor levels. The evaluated characteristics were percentage of seed germination, first germination count, emergency, days for emergence, aerial, root and total length (evaluated every 12 hours), aerial, root and total dry mass in completely randomized design. High vigor seeds originated seedlings with higher growth rates (cm. h-1), with vigor being one of the factors that interfere in the seedling length test. After 96 hours of the seedling length test, there was a statistical differentiation between the three vigor levels tested. The soybean seedling length test between lots, with different vigor, can be performed 96 hours after sowing.

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Different propagules and auxin concentration on rooting of passionflower sandbank

Revista CERES ◽

10.1590/0034-737x201663050014 ◽

2016 ◽

Vol 63 (5) ◽

pp. 691-697 ◽

Cited By ~ 3

Author(s):

Rodrigo Sobreira Alexandre ◽

Poliana Rangel Costa ◽

Kristhiano Chagas ◽

Livia Giro Mayrinck ◽

João Antônio Dutra Giles ◽

...

Keyword(s):

Adventitious Rooting ◽

Dry Mass ◽

Shoot Tips ◽

Passiflora Edulis ◽

Randomized Design ◽

Shoot Number ◽

Auxin Concentration ◽

Different Types ◽

Mother Plants ◽

Completely Randomized Design

ABSTRACT Passiflora mucronata Lam. is resistant to Fusarim oxysporum f. passifloraceae and therefore can be used as rootstock for the species Passiflora edulis Sims. f. flavicarpa. The rootstocks in this case can be vegetatively propagated through cuttings. The objective of this study was to evaluate the effect of different types of cuttings and different concentrations of indole-3-butyric acid (IBA) on the adventitious rooting of P. mucronata. The experiments were arranged in a completely randomized design with four replications of 16 cuttings each. In Experiment 1, the treatments consisted of the different types of cuttings from mother plants grown in protected environment: shoot tips; two leaves and two nodes; one leaf and one node; leafless with two nodes; leafless with one node. In Experiment 2, the cuttings were taken from field plants and treated with the following IBA concentrations: 0; 1000 mg kg-1 (0.0036456 mol L-1); 1500 mg kg-1 (0.0054684 mol L-1) and 2000 mg kg-1 (0.0072912 mol L-1). The characteristics evaluated in the experiments 1 and 2 were: survival (1 and 2); budding (1 and 2); shoot number (2), shoot length (2), number of shoot leaves (2);shoot dry mass (2); callusing (1); rooting (1 and 2); root number (1 and 2), largest root length (1 and 2), root volume (1 and 2), and root dry mass (1 and 2). We found that, instead the shoot tips, the cuttings of the type leafless with two nodes are the best for P. mucronata rooting. Neither the cuttings from greenhouse plants nor the cuttings from field plants require growth regulators for rooting of P. mucronata cuttings of the type leafless with two nodes.

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Ruellia simplex cuttings propagation produced on carnauba waste substrate

Revista Agro mbiente On-line ◽

10.18227/1982-8470ragro.v14i0.6185 ◽

2020 ◽

Vol 14 ◽

Author(s):

Taciella Fernandes Silva ◽

Klayton Antonio Do Lago Lopes ◽

Janaiane Ferreira Dos Santos ◽

Ana Paula De Almeida Sousa ◽

Francisca Gislene Albano-Machado ◽

...

Keyword(s):

Root System ◽

Aerial Part ◽

Ornamental Plants ◽

Dry Mass ◽

Fresh Mass ◽

Randomized Design ◽

Shoot Number ◽

Significant Difference ◽

Number Of Leaves ◽

Completely Randomized Design

The production of quality seedlings is necessary for the trading of ornamental plants. Seedling quality depends on several factors, among these factors, the substrate is highlighted. Thus, this study aimed to evaluate the effect of substrates based on bagana of carnauba, in the production of Ruellia simplex seedlings, by vegetative propagation. A completely randomized design was adopted, with six treatments and four replications. The treatments (substrates) were composed of bagana of carnauba (BC) and soil, in the following proportions: BC0 - 0% BC + 100% of soil; BC20 - 20% BC + 80% of soil; BC40 - 40% BC + 60% of soil; BC60 - 60% BC + 40% of soil; BC80 - 80% BC + 20% of soil; BC100 - 100% BC + 0% of soil. The plot consisted of a plant. After 45 days of cutting, it was evaluated: number of shoots; number of leaves per shoot; diameter of the highest shoot; length of the highest shoot; root length; inflorescence number; number of flowers per inflorescence; leaf area; root volume; aerial part fresh mass; root system fresh mass; aerial part dry mass; and root system dry mass. There was a significant difference for the variables, number of leaves per shoot, diameter and length of the highest shoot, number of flowers per inflorescence, fresh and dry mass of the aerial part. Having a direct relationship between the increase in the proportion of bagana of carnauba volume and the inflorescence number, the substrate 100% of bagana of carnauba is indicated.

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Wheat yield and seed physiological quality affected by initial seed vigor, sowing density, and environmental conditions

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n3supl1p1595 ◽

2021 ◽

Vol 42 (3Supl1) ◽

pp. 1595-1614

Author(s):

Jéssica de Lucena Marinho ◽

◽

Sérgio Ricardo Silva ◽

Diogo Nascimento de Souza ◽

Inês Cristina de Batista Fonseca ◽

...

Keyword(s):

Grain Yield ◽

Environmental Conditions ◽

Vegetation Index ◽

Block Design ◽

Seedling Emergence ◽

Wheat Yield ◽

Seed Vigor ◽

Productive Performance ◽

Spike Density ◽

Physiological Performance

Optimization of seed density range, combined with the use of quality seeds may help generate more profit from wheat production, as these factors affect grain yield and the quality of seeds. The aim of this study was to evaluate the effects of initial vigor level and sowing densities on the productive performance of the plants and the physiological performance of the seeds of two wheat cultivars in two cultivation environments. The experiment was carried out in the cities of Londrina and Ponta Grossa, Paraná, Brazil, in a randomized block design with four replications, following a 2 × 2 × 4 factorial scheme with two levels of seed vigor (high and low), two cultivars (BRS Gralha-Azul and BRS Sabiá), and four sowing densities (150, 250, 350, and 450 seeds m-2). The following characteristics were evaluated: emerged seedlings, shoot dry matter, spike density, vegetation index, and grain yield. Additionally, the physiological potential of the seeds produced in Londrina was evaluated by first germination count, germination, accelerated aging, seedling emergence, and emergence speed index tests. The increase in density up to 450 seeds m-2 favored the productive performance of the crop in both cultivation environments; however, it reduced the physiological performance of the seeds produced in Londrina. The cultivars BRS Gralha-Azul and BRS Sabiá had better performance and grain yield in Londrina and Ponta Grossa, respectively. High-vigor seeds favored the establishment of the stand, especially under unfavorable environmental conditions.

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Computerized image analysis of seedlings to evaluate broccoli seed vigor

Journal of Seed Science ◽

10.1590/2317-1545v39n3174582 ◽

2017 ◽

Vol 39 (3) ◽

pp. 303-310 ◽

Cited By ~ 4

Author(s):

Haynna Fernandes Abud ◽

Silvio Moure Cicero ◽

Francisco Guilhien Gomes Junior

Keyword(s):

Image Analysis ◽

Imaging System ◽

Seedling Emergence ◽

Accelerated Aging ◽

Seed Vigor ◽

Computer Image Analysis ◽

Computerized Image Analysis ◽

Randomized Design ◽

Completely Randomized Design

Abstract: The computerized image analysis of seedlings constitutes an efficient technique to evaluate the quality of seed lots, since it is quick in responding, has a simple execution and reproduction. The goal of this research was to verify the efficiency of the computer image analysis of seedlings to detect vigor differences among broccoli seed lots and compare them with other traditionally used vigor tests. Computerized image analysis were performed by the Seed Vigor Imaging System (SVIS®), using 3-day-old seedlings and the results were compared to germination at first count, seedling emergence, accelerated aging and electrical conductivity tests. Evaluations were performed in three experimental periods (before storage, 6 and 12 months of storage at 20 °C and 45-50% RH). A completely randomized design with eight replications of 25 seeds was used. Data were submitted to analysis of variance and means were compared by Scott-Knott test at 5% error probability. It is concluded that it is possible to detect vigor differences among broccoli seed lots by the computerized image analysis of seedlings with SVIS®, similarly to traditional vigor tests.

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Immersion time in toxic solution for vigor evaluation of bean seeds

Journal of Seed Science ◽

10.1590/s2317-15372014000100014 ◽

2014 ◽

Vol 36 (1) ◽

pp. 108-113

Author(s):

Valquíria Aparecida Mendes de Jesus ◽

Alisson Vinicius de Araujo ◽

Paola Andrea Hormaza Martínez ◽

Eveline Mantovani Alvarenga ◽

Denise Cunha Fernandes dos Santos Dias

Keyword(s):

Ammonium Chloride ◽

Immersion Time ◽

Pearson Correlation ◽

Seedling Emergence ◽

Dry Weight ◽

Seed Vigor ◽

The Other ◽

Lack Of Information ◽

Randomized Design ◽

Completely Randomized Design

Considering the lack of information about the optimal permanence time of bean seeds in toxic solutions, this work aimed to evaluate the effect of different immersion times to differ of the seeds vigor. It was used five seed lots of cultivar ‘Carnaval MG’. The seeds were immersed in a solution of ammonium chloride (1%) during 15, 30, 45, 60 and 75 minutes, in BOD at 40 ºC. Then, the seeds were washed and placed to germinate. Additionally, germination tests, first count, emergence speed index (SEI), seedling emergence, fresh and dry weight of seedlings were carried out. A completely randomized design and a factorial scheme 5 x 5 (seed lots and immersion times) with four replications were employed. Analysis of variance and regression were performed and the means were compared by Tukey’s test (α = 5%). Pearson correlation was performed among treatments in toxic solution and the other tests. It was verified that it is possible to estimate the seed vigor, from different lots of beans using the immersion of seeds in a toxic solution of ammonium chloride (1%) during 30 minutes.

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Competitiveness of alexandergrass or Bengal dayflower with soybean

Planta Daninha ◽

10.1590/s0100-83582010000300008 ◽

2010 ◽

Vol 28 (3) ◽

pp. 515-522 ◽

Cited By ~ 7

Author(s):

A.C.R. Dias ◽

S.J.P. Carvalho ◽

L.W. Marcolini ◽

M.S.C. Melo ◽

P.J. Christoffoleti

Keyword(s):

Competitive Ability ◽

Dry Mass ◽

Total Density ◽

Weed Species ◽

Replacement Series ◽

Commelina Benghalensis ◽

Randomized Design ◽

Full Flowering ◽

Completely Randomized Design ◽

Soybean Plants

Weeds compete with field crops mainly for water, light and nutrients, and the degree of competition is affected by the weed density and the intrinsic competitive ability of each plant species in coexistence. The objective of this research was to compare the competitiveness of alexandergrass (Brachiaria plantaginea) or Bengal dayflower (Commelina benghalensis) in coexistence with soybean, cv. M-Soy 8045. A factorial experiment (2 x 5) with two weed species and five competition proportions was carried out in a completely randomized design with four replicates. Proportions were based on a replacement series competition design, always maintaining the total density of four plants per 10 L plastic pots, which corresponded to 60 plants m ². The weed-crop proportions were: 0:4; 1:3; 2:2; 3:1; 4:0; that corresponded to the proportion of 100, 75, 50, 25 and 0% of soybean plants and the opposite for weeds, B. plantaginea or C. benghalensis plants. Leaf area, shoot dry mass of the weeds and soybean and number of soybean trifoliate leaves were evaluated when the soybean reached the phenologic stage of full flowering. B. plantaginea was a better competitor than soybean plants. Otherwise, C. benghalensis revealed a similar competitive ability that of the soybean. In both cases, there were evidences that intraspecific competition was more important.

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