scholarly journals Contribuição à fisiologia da nutrição mineral no crescimento e desenvolvimento da soja (Glycine max. L. Merril)

1979 ◽  
Vol 1 (1) ◽  
pp. 121
Author(s):  
Victor Hugo da Silva e Souza ◽  
Nelcindo Nascimento Terra ◽  
Osmar Souza dos Santos
Keyword(s):  
Glycine Max ◽  
Rio Grande ◽  
Dry Weight ◽  
Fresh Weight ◽  
Stages Of Development ◽  
Second Stage ◽  
Glycine Max L ◽  
Vegetative Cycle ◽  
Macro And Micronutrients ◽  
Santa Maria

The aim of this work was to study the accumulation of dry material and absorption of nutrients by soybean. Three varieties (Bragg, IAS-2 and Santa Rosa) had their physiological behavior observed in three kinds of soil (Santa Maria, São Pedro and Vacacaí) of Rio Grande do Sul.In the first stage of the work we seek to estimate the behavior of the varieties, oedering the variation of fresh-weight, dry-weight and the percentage of water, obtaining informations about samples, age of the plant, stages of development, vegetative cycle and productiveness. In the second stage, we observed the percentage of absorption of some macro and micronutrients and their amplitudes, calculating their simple correlations and equations of significatives regressions.In aerial portions there were accumulations of macro and micronutrients, but do not observing great oscillations in quantity of absorbed elements. Phosphorus (P) was continually and constantly absorbed, until the formations of the seed. We obsorbed that potassium (K), was completly absorbed before maturation, whereas calcium (Ca) and magnesium (Mg) were gradually accumulated.

scholarly journals Effects of Zinc and Vermicompost on the Growth of Soybean (Glycine Max L.)

2020 ◽  
Vol 29 (2) ◽  
pp. 201-208
Author(s):  
TT Purna ◽  
AHMZ Ali ◽  
Md Khalilur Rahman
Keyword(s):  
Glycine Max ◽  
Growth Parameters ◽  
Growth Yield ◽  
Dry Weight ◽  
Nutrient Content ◽  
Fresh Weight ◽  
Glycine Max L ◽  
Macro And Micronutrients ◽  
Average Plant ◽  
Gm Plant

A pot experiment was conducted to evaluate the effects of zinc and vermicompost on the growth, yield and nutrient content of soybean (Glycine max L.) plant. The treatment variables were control (‒Zn and ‒VC), VC 5 ton/ha, Zn 1 kg/ha, Zn 2 kg/ha, Zn 3 kg/ha, Zn 1 kg/ha + VC 5 ton/ha, Zn 2 kg/ha + VC 5 ton/ha and Zn 3 kg/ha + VC 5 ton/ha. Application of zinc and vermicompost showed a significant effect on the growth parameters and macro- and micronutrients uptake by the plant. The highest average plant height (164 cm), leaf number (80 nos./plant), leaf area (3360 cm2/plant), fresh weight (49.03 gm/plant), dry weight (24.54 gm/plant), fruit length (9.4 cm), fruit number per plant (5 nos. /plant) were recorded for Zn 1 kg/ha + VC 5 ton/ha treatment while the lowest values were observed in control at harvest. Results of the growth parameters varied significantly (p ≤ 0.05) with time. It was observed that, the overall best growth performance was achieved in Zn 1 kg/ha + VC 5 ton/ha. Dhaka Univ. J. Biol. Sci. 29(2): 201-208, 2020 (July)

Comparisons of nitrogen fixation estimates in soybeans by nodule weight, leghemoglobin content, and acetylene reduction

1973 ◽  
Vol 19 (9) ◽  
pp. 1165-1168 ◽  
Author(s):  
H. S. Johnson ◽  
D. J. Hume
Keyword(s):  
Nitrogen Fixation ◽  
Glycine Max ◽  
Acetylene Reduction ◽  
Growth Period ◽  
Growing Season ◽  
Field Conditions ◽  
Soybean Cultivar ◽  
Fresh Weight ◽  
Stages Of Development ◽  
Glycine Max L

Nodule leghemoglobin content, acetylene reduction rates, and nodule weight determinations were made during an entire growth period of soybean (Glycine max (L.) Merr. cv. Altona) plants grown under field conditions. High correlations within most sampling dates were found between each pair of possible comparisons of these indicators of nitrogen fixation.Rates of conversion of acetylene to ethylene per milligram leghemoglobin constantly decreased during the growing season, whereas leghemoglobin content per gram nodule fresh weight remained relatively constant. These results indicate that leghemoglobin content of nodules could be used to compare rates of nitrogen fixation in plants of a soybean cultivar at similar stages of development but should not be used to compare fixation rates in plants at different stages in ontogeny.

scholarly journals Peroxidase and lipid peroxidation of soybean roots in response to p-coumaric and p-hydroxybenzoic acids

2003 ◽  
Vol 46 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Patrícia Minatovicz F. Doblinski ◽  
Maria de Lourdes L. Ferrarese ◽  
Domitila A. Huber ◽  
Carlos Alberto Scapim ◽  
Alessandro de Lucca e Braccini ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Cell Wall ◽  
Glycine Max ◽  
Root Growth ◽  
Root Length ◽  
Dry Weight ◽  
Fresh Weight ◽  
Glycine Max L ◽  
Hydroxybenzoic Acids ◽  
Soybean Roots

The scope of the present study was to investigate how the p-coumaric (p-CA) and p-hydroxybenzoic (p-HD) acids affect the peroxidase (POD, EC 1.11.1.7) activity, the lipid peroxidation (LP) and the root growth of soybean (Glycine max (L.) Merr.). Three-day-old seedlings were cultivated in nutrient solution containing p-CA or p-HD (0.1 to 1 mM) for 48 h. After uptake, both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) while increased soluble POD activity, cell wall (CW)-bound POD activity (with 1 mM p-CA and 0.5 mM p-HD) and LP.

scholarly journals Morphological and Molecular Characterization of Soybean (Glycine max L.) Genotypes undre Salt Stress

2021 ◽  
Vol 24 (2) ◽  
pp. 33-46
Author(s):  
MS Rahman ◽  
MA Malek ◽  
RM Emon ◽  
A Hannan ◽  
GHM Sagor
Keyword(s):  
Salt Stress ◽  
Glycine Max ◽  
Chlorophyll Content ◽  
Coefficient Of Variation ◽  
Dry Weight ◽  
Shoot Length ◽  
Group Method ◽  
Salt Tolerant ◽  
Fresh Weight ◽  
Glycine Max L

Three advanced lines (SB02, SB05, SB07) along with one tolerant (Lokon) and one susceptible check (Asswt) of soybean (Glycine max L.) were assessed for salt tolerance in terms of morpho-physiological traits and molecular markers (SSR). The experiment was conducted at seedling stage with four salinity treatments namely 0, 8, 12 and 16 dSm-1 following Completely Randomized design. All the genotypes displayed considerable reduction in their morphological traits, least affecting the tolerant one. None of the genotypes were survived at 12 and 16 dSm-1 stress condition. Among the lines tested, SB-02 and SB-05 were identified as salt tolerant at 8 dSm-1 based on salinity susceptibility index (SSI) scoring. These genotypes suffered less in reduction of leaf chlorophyll content (SPAD) and increase of Na+/K+ than the susceptible genotypes. For all the traits viz. shoot length, root length, total length, shoot fresh weiht, root fresh weight, shoot dry weight, root dry weight, total fresh weight, total dry weight, percent live leaves, chlorophyll content and Na+/K+ ratio, the phenotypic coefficient of variation (PCV) was higher than that of genotypic coefficient of variation (GCV). All the traits studied showed medium to high heritability ranging between 43.81% (SPAD) to 96.65% (shoot length). The genotypes were grouped into two clusters considering both Euclidian distance and Unweighted Pair Group Method with Arithmetic Mean analysis. Lokon, SB-02 and SB-05 are on the same cluster as tolerant, and SB-7 and Asset on the other as susceptible to salt stress. The molecular pattern using by SSR marker displayed an average number of 3.33 alleles per locus with PIC (Polymorphism Information Content) values ranged from 0.2688 (sat_655 and satt728) to 0.7680 (sat_210). The highest gene diversity was observed in sat_210 and satt237 and the lowest in sat_655 and satt728 with a mean diversity of 0.5733. The genotypes Lokon, SB-02 and SB-05 could be suggested as a potential germplasm source of QTL (Quantitative Trait Loci) analysis for the development of salt tolerant soybean variety. Ann. Bangladesh Agric. (2020) 24(2): 33-46

scholarly journals Nutrição mineral da soja (Glycine max. L. Merril) na floração

1983 ◽  
Vol 5 (5) ◽  
pp. 187
Author(s):  
Victor Hugo da Silva e Souza
Keyword(s):  
Glycine Max ◽  
Chemical Composition ◽  
Atomic Absorption ◽  
Rio Grande ◽  
Atomic Absorption Spectrophotometer ◽  
Rio Grande Do Sul ◽  
Mineral Analysis ◽  
High Demand ◽  
Glycine Max L ◽  
Santa Maria

The principal objetive of the present work was to obtain information of avaliability, absorption and distribution of nutrients and the state nutritive of three varieties of soybean, before and begin of the flowering.The experiment was conducted on soil Santa Maria at the Central Depression of the Rio Grande do Sul, Brazil, using the varieties "IAS-2", "Bragg" and "Hardee". The concentrations of calcium (Ca), magnesium (Mg), of Copper (Cu), of iron (Fe) and zinc (Zn) were determined by the atomic absorption spectrophotometer; the phosphorus (P) by the colorimetry and the potassium (K) by flame photometer.The chemical composition of the mineral analysis of the leaves between the vegetative stage and reprodutive stage showed the high demand, the translocation and the concentrations of macronutrients and micronutrientes according the varieties.

scholarly journals RESPONSE OF SOYBEAN PLANT TO INOCULATION OF ARBUSCULAR MYCORRHIZAE AND APPLICATION OF PHOSPHORUS FERTILIZER ON ACIDIC SOIL

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Ilham Fahrizal ◽  
Arifah Rahayu ◽  
Nur Rochman
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Arbuscular Mycorrhizae ◽  
Dry Weight ◽  
Soybean Plant ◽  
Phosphorus Fertilizer ◽  
Fresh Weight ◽  
Glycine Max L ◽  
Number Of Leaves ◽  
Weight Number

The study was aimed at assessing the response of soybean plant (Glycine max L.) to inoculation of arbuscular mycorrhizae and application of phosphorus fertilizer on acidic soil. The study was conducted from February to June 2013. A factorial completely randomized design was used. The first factor was inoculation  of mycorrizhae consisting of two levels, namely no inoculation and mycorrizhae inoculation of 10 g/plant. The second factor was the application of phosphorus fertilizer in four levels, namely 0 kg SP-36/ha, 100 kg SP-36/ha, 200 kg SP-36/ha, and 300 kg SP-36/ha. Results showed that soybean plant given no mycorrhizae of 10 g/plant had higher plant height at 3 weeks after planting (WAP) than those given no mycorrhizae. The application of phosphorus fertilizer was found to give significant effects on plant height at 4-7 WAP, number of leaves at 6 WAP, trunk diameter, root  length, number of productive branches, fresh and dry weight of roots, fresh and dry weight of root nodes, age at first flowering, number of root nodes, leaf width, pod dry weight, number of one seeded pods and three seeded pods. It was also found that the interaction between inoculation of arbuscular mycorrhizae and application of phosphorus fertilizer gave significant effects on number of leaves at 7 WAP, canopy dry and fresh weight, pod fresh weight, number of two seeded pods, total plant fresh and dry weight, total dry seed weight, number of total pods, and number of seeded pods.Key words: Glycine max L., root nodes, pod dry weight, seeded pods

scholarly journals Efeito de Diferentes Tipos de Injúrias Causadas nos Estádios Iniciais de Desenvolvimento da Soja

2016 ◽  
Vol 9 (3) ◽  
pp. 193-196
Author(s):  
Eires Tosta Fernandes ◽  
Crébio José Ávila
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Aerial Part ◽  
Insect Pests ◽  
Fresh Weight ◽  
Stages Of Development ◽  
Development Stages ◽  
Early Stages ◽  
Different Types ◽  
Glycine Max L

A soja, Glycine max (L.), é uma cultura que pode ser prejudicada por insetos-praga durante todo o ciclo fenológico, principalmente nos estádios iniciais  desta cultura. O objetivo deste trabalho foi avaliar a resposta da cultura da soja a diferentes tipos de injúrias artificiais causadas nos seus estádios iniciais de desenvolvimento. O experimento foi conduzido na área experimental da Embrapa Agropecuária Oeste, utilizando-se as cultivares FTS Campo Mourão e BRS Potência, as quais foram submetidas aos seguintes tipos de injúrias iniciais: 1) Remoção de um cotilédone; 2) Remoção de dois cotilédones; 3) Remoção de dois cotilédones e uma folha unifoliolada; 4) Remoção de dois cotilédones e duas folhas unifolioladas; 5) Remoção de uma folha unifoliada; 6) Remoção de duas folhas unifolioladas; 7) Corte abaixo das folhas unifolioladas; 8) Corte do broto trifoliado; 9) Testemunha (sem injúria). A altura das plantas, o número de vagens/planta e o peso verde da parte aérea da cultivar FTS Campo Mourão foram menores quando comparado com os valores desses parâmetros obtidos na cultivar BRS Potência. Foi também constatado redução na altura das plantas de soja nos tratamentos 3, 4, 6 e 7 quando comparado à testemunha. O rendimento de grãos (Kg ha-1) foi semelhante nas duas cultivares e não foi influenciado pelos diferentes tipos de injúrias causados nas plantas. Já o peso de 100 sementes (g) foi maior na cultivar FTS Campo Mourão quando comparado a cultivar BRS Potência. Independente dos tipos de injúrias que são causadas, as plantas apresentam capacidade de recuperação ao dano.Effect of Different Types of Injury Caused During the Early Soybean Development Stages Abstract. The soybean, Glycine max (L.), is a crop that can be damaged by insect pests throughout its phonological cycle, particularly in the early stages of development of this culture. The aim of this study was to evaluate the response of soybean to different types of artificial injuries caused in its early stages of development. The experiments were carried out at Embrapa Agropecuária Oeste using the cultivars FTS Campo Mourão and BRS Potência. These cultivars were submitted to nine treatments of artificial injuries, as follow: 1) removal of one cotyledon; 2) removal of two cotyledons; 3) removal of two cotyledons and one unifoliate leaf; 4) removal of two cotyledons and two unifoliate leaves; 5) removal of one unifoliate leaf, 6) removal of two unifoliate leaves; 7) cut below the unifoliate leaves; 8) cut below the trifoliate bud; 9) untreated (without injury). The plant height, the number of pods/plant and fresh weight of aerial part in Campo Mourão cultivar were lower than that observed with the Potência cultivar. There was also reduction of the plant height in the treatments 3, 4, 6 and 7 when compared to the control (without injury). The grain yield (Kg ha-1) was similar in both cultivars and was not influenced by the different types of injuries applied in plants of both cultivars. The weight of 100 seeds (g) was higher in cultivar Campo Mourão when compared to Potência cultivar. Regardless of the types of injuries that are caused, the plants have resilience to damage.

Impacto da quantidade e frequência de chuva no rendimento da soja

Agrometeoros ◽  
2018 ◽  
Vol 25 (1) ◽  
Author(s):  
Bernadete Radin ◽  
André Schönhofen ◽  
Ivonete Fátima Tazzo
Keyword(s):  
Glycine Max ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Glycine Max L

A soja (Glycine max L.), importante cultura no cenário agrícola brasileiro, apresenta elevada variação interanual do rendimento de grãos no Estado do Rio Grande do Sul (RS). Geralmente, a maior parte desta inconstância é devido à irregularidade da quantidade e frequência da precipitação. Neste trabalho, correlacionou-se o rendimento de grãos de soja em seis municípios do RS de 2005 a 2012 com o acumulo da precipitação trimestral de outubro a abril e avaliou-se também o número de dias com chuva e consecutivos sem chuva e seus possíveis efeitos na produtividade da cultura. De acordo com os resultados, 81% da variação do rendimento de grãos pode ser explicada pela precipitação ocorrida de janeiro a março, quando as plantas se encontram em estádio de floração e enchimento de grãos. O aumento no número de dias consecutivos sem ocorrência de chuva ou diminuição do número de dias com chuva agrava o efeito da baixa quantidade de precipitação e impacta negativamente no rendimento da cultura da soja.

scholarly journals Calagem e adubação mineral da soja (Glycine max (L.) Merrill) variedade Santa Maria, em solo de várzea

Bragantia ◽  
1974 ◽  
Vol 33 (unico) ◽  
pp. 1-9 ◽  
Author(s):  
José Geraldo Baumgartner ◽  
Eli Sidney Lopes ◽  
Joel Domingos Demattê ◽  
Shiro Miyasaka ◽  
Toshio Igue ◽  
...  
Keyword(s):  
Glycine Max ◽  
Glycine Max L ◽  
Santa Maria

Um experimento para estudar efeitos da calagem e da adubação mineral sobre o desenvolvimento da cultura de soja (Glycine max (L.) Merrill) foi conduzido em solo de várzea, rico em matéria orgânica, localizado na Estação Experimental do Serviço do Vale do Paraíba, em Pindamonhangaba. Foram aplicadas doses crescentes de calcário, combinadas com diferentes niveis de fósforo e potássio, sendo também incluídos molibdênio e boro (micronutrientes), em alguns tratamentos. Verificou-se efeito favorável da calagem na produção de matéria seca e no teor de nitrogênio total da parte aérea das plantas. Não se observaram, todavia, diferenças nesses valores, por influência de dosagens do corretivo. A resposta favorável ao fósforo verificou-se apenas para o maior nível de adubação fosfatada, quer na ausência de calcário, quer dentro do menor nível de calcário, quando o fósforo foi aplicado junto ao potássio. As aplicações de potássio, molibdênio e boro não afetaram o desenvolvimento da cultura. A análise química do solo, feita periodicamente para todos os tratamentos, mostrou variações significativas nos valores de pH, em função do tempo, mesmo nas áreas que não receberam calcário. Verificou-se, ainda, que até aos 162 dias após a calagem não houve neutralização de todo o alumínio trocável.

scholarly journals Plastocrono e número final de nós de cultivares de soja em função da época de semeadura

2011 ◽  
Vol 41 (6) ◽  
pp. 954-959 ◽  
Author(s):  
Juliano Dalcin Martins ◽  
Sidinei Zwick Radons ◽  
Nereu Augusto Streck ◽  
Alberto Eduardo Knies ◽  
Reimar Carlesso
Keyword(s):  
Glycine Max ◽  
Glycine Max L ◽  
Santa Maria

O plastocrono, intervalo de tempo entre o aparecimento de dois nós sucessivos na haste principal da planta, e o número final de nós (NFN) são importantes variáveis do desenvolvimento de plantas. O objetivo deste trabalho foi determinar o plastocrono e o NFN de cultivares de soja (Glycine max (L.) Merrill) semeadas em diferentes épocas em um local de clima subtropical. Um experimento de campo foi realizado em Santa Maria, RS, no ano agrícola de 2005/2006, com três épocas de semeadura (09/11/2005, 09/12/2005 e 28/01/2006). Foram utilizadas 15 cultivares de soja recomendadas para as regiões Norte e Centro da Argentina, e Sul e Sudeste do Brasil. As variáveis medidas foram o número acumulado de nós (NN) e o NFN na haste principal. O plastocrono foi estimado pelo inverso do coeficiente angular da regressão linear entre o NN e a soma térmica acumulada a partir de emergência (temperatura base = 10°C). Semeaduras tardias resultaram em menor plastocrono e menor NFN, provavelmente devido ao menor fotoperíodo a que as plantas foram submetidas durante a fase de emissão de nós, uma resposta característica de plantas de dia curto.

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