Epicotyl length in seedlings of soybean cultivars subjected to reduced inter-row spacing

The objective was to evaluate the epicotyl length of seedlings of soybean cultivars in the field, submitted to plant densification by reducing the inter-row spacing. Two field experiments were conducted in Rio Paranaíba in the state of Minas Gerais and the effect of reduced spacing (20 cm, 30 cm, 40 cm and 50 cm between rows) was evaluated. The assessment of the epicotyl length was done by using a millimeter ruler when the plants reached the V2 development stage. The experiments were conducted in a randomized block design with four repetitions. In experiment 1, the BRSMG752S cultivar was submitted to four inter-row spacings and no differences were found among them. In experiment 2, the simple factorial scheme 4 x 3 was considered, with 4 spacings and 3 cultivars, to analyze the effect of the interaction between cultivars (96R10, 97R50 and 98Y21) and spacing (20, 30, 40 and 50 cm between rows). The results of experiment 2 indicated that there was no significant effect for spacing and that the cultivars presented statistically different averages. Thus, it can be concluded that the epicotyl length of soybean seedlings, grown in the field in Rio Paranaíba in the state of Minas Gerais and evaluated at the V2 stage of development, was not influenced by the distance between the sowing lines and that the cultivar 96R10 showed the highest and 98Y21 the lowest mean epicotyl length of soybean seedlings, grown in the field in Rio Paranaíba in the state of Minas Gerais and evaluated at the V2 stage of development.

Download Full-text

Glyphosate-resistant soybeans yield in function of glyphosate salts, doses and stadium phenological

Bioscience Journal ◽

10.14393/bj-v36n4a2020-48079 ◽

2020 ◽

Vol 36 (4) ◽

Author(s):

Lucas Alfonso Rohr ◽

Rafaela Cinelli ◽

Rubens Antonio Polito ◽

Tamara Heck ◽

Noryam Bervian Bispo ◽

...

Keyword(s):

Ammonium Salt ◽

Global Economy ◽

Potassium Salt ◽

Field Experiments ◽

Block Design ◽

Factor B ◽

Soybean Cultivars ◽

Randomized Block Design ◽

Management Techniques ◽

Factor C

Given the importance of soybean to the global economy and as a food source, improving crop management techniques is integral to obtaining higher yields. As such, this study aimed to assess the yield of soybean cultivars as a function of different glyphosate salt formulations, doses and application times. Two field experiments were conducted simultaneously using a randomized block design and 3x4x2 factorial scheme, with three repetitions. Factor A consisted of three glyphosate formulations: isopropylamine salt (Roundup Original®), ammonium salt (Roundup WG®), and potassium salt (Zapp Qi®), factor B four application times: 0, 14, 28, 42 days after planting (DAP), and factor C two doses: the recommended dose of 720 grams of acid equivalent per hectare and twice that (1440 grams of acid equivalent per hectare). There was no difference between the glyphosate salts for the BMX Ativa RR® cultivar, but yields of BMX Apolo RR® submitted to ammonium salt were 28% higher than those recorded for the other salts studied. Glyphosate potassium salt resulted in lower soybean yields. Potassium salt application between 14 and 28 DAP caused greater toxicity in both the soybean cultivars analyzed.

Download Full-text

Combinação de métodos paramétricos e não-paramétricos para estudo da estabilidade de cultivares de soja no Cerrado Tocantinense

Revista Verde de Agroecologia e Desenvolvimento Sustentável ◽

10.18378/rvads.v11i2.4011 ◽

2016 ◽

Vol 11 (2) ◽

pp. 21

Author(s):

Aristoteles Capone ◽

Alex Sandro Dario ◽

Lucas Antonio Lampert Vicentino ◽

Rodrigo Ribeiro Fidelis ◽

Helio Bandeira Barros

Keyword(s):

Block Design ◽

Parametric Method ◽

Nonparametric Methods ◽

Stability Study ◽

The State ◽

Negative Sign ◽

Soybean Cultivars ◽

Randomized Block Design ◽

The Stability

Objetivou-se com esse estudo avaliar a viabilidade da combinação de métodos paramétrico e não-paramétricos para inferir acerca da estabilidade de cultivares de soja no cerrado tocantinense. Para isso utilizou-se os dados de ensaios de competição conduzidos em quatro ambientes nas safras de 2009/10 e 2010/11 e na entressafra de 2010. Utilizou-se o delineamento em blocos casualizados com quatro repetições. As estimativas de estabilidade foram obtidas pelo método paramétrico sugerido por Livorenti e Matsuoka e pelos métodos não-paramétricos propostos por Huenh e Fox. Pelo método paramétrico, os cultivares M8766, M9056, P98Y70RR, M9144RR, JulianaRR e BRS8560RR acumularam o maior número de sinais positivos nos ambientes avaliados, sendo que os dois últimos apresentaram sinal negativo em um ambiente. Pela metodologia não-paramétrica foram discriminados como produtivos e estáveis apenas os quatro primeiros cultivares. Neste sentido, houve concordância na discriminação de cultivares produtivos e estáveis por ambos os métodos, desde que desconsiderados aqueles que apresentam sinal negativo entre os ambientes avaliados. Assim, a combinação dessas metodologias além de apresentar simples aplicabilidade, mostra-se viável para inferir acerca da estabilidade e produtividade de cultivares de soja para o estado do Tocantins.Combination of parametric and nonparametric methods for stability study of soybean cultivars in the from Cerrado TocantinenseAbstract: The objective of this study was to evaluate the viability of combining parametric and nonparametric methods to infer about the stability of soybean cultivars in the cerrado from Tocantins state. Were used data from competition experiments conducted in four environments in crop 2009/10 and 2010/11 and between crop of 2010. A randomized block design were used with four replications. Estimates of stability were obtained by the parametric method suggested by Livorenti and Matsuoka; the nonparametric methods proposed by Huenh and Fox et al. For the parametric method, the soybeans cultivars M8766, M9056, P98Y70RR, M9144RR, JulianaRR and BRS8560 accumulated the highest number of positive signs in the environments, whereas the latter two cultivars had a negative sign in one environment. For nonparametric methodology were discriminated as productive and stable only the first four cultivars. In this sense, there was concordance in discriminating cultivars productive and stable for both methods, since those who have ignored the negative sign between the environments evaluated. Thus, the combination of these methods and presents simple applicability, seems viable to infer the stability and productivity of soybean cultivars for the state of Tocantins.

Download Full-text

Prevalence of Oestrus ovis (Diptera: Oestridae) in sheep from Ituiutaba, south-east region of Brazil

Ciência Animal Brasileira ◽

10.1590/1809-6891v22e-67800 ◽

2021 ◽

Vol 22 ◽

Author(s):

Henrique Inhauser Riceti Magalhães ◽

Ana Caroline Romão da Silva ◽

Fabiano Braz Romão ◽

Nadia Grandi Bombonato ◽

Guilherme Nascimento Cunha

Keyword(s):

Small Ruminants ◽

Minas Gerais ◽

The State ◽

Ovis Aries ◽

Oestrus Ovis ◽

Larval Size ◽

Stage Of Development ◽

East Region ◽

Significant Difference ◽

Complete Study

Abstract Among the diseases which can afflict the nasal cavities of small ruminants, oestrosis stands out. In Brazil, more specifically in its South-East region, the reports are limited only to the State of São Paulo and to the municipality of Araxá, Minas Gerais. Therefore, it has been sought to assess the parasitic prevalence of Oestrus ovis in sheep farmed in the municipality of Ituiutaba, Minas Gerais-Brazil, while correlating the larval size and stage, and its anatomical localization. Eighty-eight hemiheads of healthy Santa Inês/Dorper crossbreds Ovis aries have been used at random. The larvae in view were then collected and fixated to be quantified and analyzed in regard of size and stage of development. It is concluded that the oestrosis is an existing problem in the municipality of Ituiutaba, this being the first complete study on the prevalence of this parasite in the State of Minas Gerais. By anatomical distribution, only the differences of total larval averages between the frontal sinus and the ventral nasal meatus, the common nasal meatus and the nasopharynx have been significant. In size, the significant difference has been there only upon comparison between the size and the larval stage, information that is crucial for a better understanding of the cyclic progression, of the clinical symptomatology, and animal prophylaxis.

Download Full-text

Molybdenum mixed with glyphosate and alone via foliar spray in no-tillage common bean grown on corn stover

Revista CERES ◽

10.1590/s0034-737x2014000100008 ◽

2014 ◽

Vol 61 (1) ◽

pp. 62-69

Author(s):

Gessimar Nunes Camelo ◽

Geraldo Antonio de Andrade Araújo ◽

Renildes Lucio Ferreira Fontes ◽

Luiz Antonio dos Santos Dias ◽

José Eustáquio de Souza Carneiro ◽

...

Keyword(s):

Common Bean ◽

Corn Stover ◽

Field Experiments ◽

Block Design ◽

Foliar Spray ◽

Cumulative Effect ◽

No Tillage ◽

Randomized Block Design ◽

Tillage System ◽

Mo Content

The effect of molybdenum (Mo) on common bean grown in desiccated corn stover in a no-tillage system was evaluated under two application modes: Mo mixed with the desiccant glyphosate and Mo direct spray to the bean leaves. The treatments (four replicates) were assigned to a completely randomized block design in a split-plot arrangement with the application of Mo (0, 100, 200, 400 and 800 g ha-1) mixed with glyphosate in the main plots and Mo foliar spray (0 and 100 g ha-1) in the sub-plots. The field experiments were carried out in 2009 and 2010 in the municipality of Coimbra, Minas Gerais State, with the common bean cultivar Ouro Vermelho. Mo mixed with glyphosate had neither an effect on common bean yield nor on the Mo and N contents in leaves, however it increased the Mo and N contents in seeds. Application of Mo via foliar spray increased Mo content in leaves and Mo and N contents in seeds. The reapplication of molybdenum with glyphosate for desiccation in subsequent crops caused a cumulative effect of Mo content in bean seeds.

Download Full-text

Penampilan Varietas Jagung Unggul Baru Bermutu Protein Tinggi di Jawa dan Bali

Buletin Plasma Nutfah ◽

10.21082/blpn.v10n2.2004.p49-55 ◽

2017 ◽

Vol 10 (2) ◽

pp. 49 ◽

Cited By ~ 1

Author(s):

Muhammad Azrai

Keyword(s):

Amino Acids ◽

Yield Components ◽

Future Prospect ◽

Block Design ◽

Quality Protein Maize ◽

Row Spacing ◽

Randomized Block Design ◽

Puccinia Polysora ◽

Ear Height ◽

Biomass Plant

AbstractStudy on the performance of two quality protein maize (QPM) varieties (Srikandi Putih-1 and Srikandi Kuning-1) plus two Indonesian open pollinated varieties (Bayu and Lamuru) was conducted at seven environments in Java and Bali. The experiments were arranged in a randomized block design with three replications. Each variety was grown in a four-row plot with 5 m length, 75cm apart and 25 cm within row spacing and one plant per hill. Observations were made on yield, biomass, plant height, ear height, flowering dates, yield components, plant and ear aspect, husk cover, diseases incidence of Puccinia polysora and Helminthossporium maydis, protein contains, lysine, and tryptophan-amino acids contains. In general, Srikandi Putih-1 and Srikandi Kuning-1 varieties had a good adaptations under all environments. They contained nearly twice the lysine and tryptophan-amino acids compared to Bayu and Lamuru varieties. Therefore, they have future prospect for the development of protein synthesis in humans and monogastric animals.AbstrakPenelitian penampilan varietas jagung unggul baru bermutu protein tinggi (Srikandi Putih-1 dan Srikandi Kuning-1) dan dua varietas unggul nasional (Bayu dan Lamuru) telah dilaksanakan pada tujuh lokasi di Jawa dan Bali pada tahun 2003 sampai 2004. Penelitian ditata dalam percobaan acak kelompok dengan tiga ulangan. Setiap varietas ditanam pada petakan empat baris, panjang 5 m, jarak antar baris 75 cm, jarak dalam barisan 25 cm, dan ditumbuhkan satu tanaman per rumpun. Pengamatan dilakukan terhadap hasil biji, biomas segar, tinggi tanaman, panjang tongkol, umur berbunga, komponen hasil, skor penampilan tanaman, penutupan kelobot, penyakit karat dan hawar daun, serta kandungan protein kasar, asam amino lisin, dan triptofan. Secara umum varietas Srikandi Putih-1 dan Srikandi Kuning-1 dapat beradaptasi baik pada semua lingkungan. Selain itu, kedua varietas tersebut mempunyai kandungan lisin dan triptofan hampir dua kali lipat dibandingkan dengan varietas Bayu dan Lamuru. Oleh karena itu, kedua varietas tersebut mempunyai prospek untuk dikembangkan sebagai sintesis protein pada ternak monogastrik dan manusia.

Download Full-text

Performance of soy cultivars in the south of Minas Gerais State, Brazil

Revista Agrogeoambiental ◽

10.18406/2316-1817v9n32017976 ◽

2017 ◽

Vol 9 (3) ◽

Author(s):

Elaine Cristina Batista ◽

José Luiz De Andrade Rezende Pereira ◽

Adriano Teodoro Bruzi ◽

Everton Vinucius Zambiazzi ◽

Karina Barroso Silva

Keyword(s):

Grain Yield ◽

Plant Height ◽

Environmental Variables ◽

Block Design ◽

Minas Gerais ◽

Climatic Conditions ◽

The South ◽

Randomized Block Design ◽

Minas Gerais State

Cultivar evaluation is one of the basic steps recommended for a given region, since the best adapted cultivars have higher yields, and success in this parameter is based on the genotype of the material and its interaction with the environmental variables. The aim of this study was to evaluate thebehavior of 23 soy cultivars in the soil-climatic conditions of the south region of Minas Gerais State (MG), Brazil, in the municipality of Inconfidentes. The evaluated traits were grain yield, plant height, height of insertion of the first legume and lodging. The experiments were conducted on the 2013/2014 and 2014/2015 harvests, adopting a randomized block design with three replicates and 23 treatments, which were constituted by the following cultivars: FAVORITA RR, BRS MG 760SRR, NA 5909 RG, NA 7200 RR, CD 2630, CD 250, NA 7620 RR, CD 2737, TMG 123, V-MAX RR, P 98Y11 RR, NS 7100 RR, BMX Potencia, Anta 82 RR, CD 237, V-TOP, TMG 1176 RR, TMG 1174 RR, TMG 1179 RR, TMG 1181 RR, BMX Força, Monsoy 7211 RR and BRS MG 780 RR. Of the studied cultivars, those that most stood out for the traits evaluated in the conditions of Inconfidentes (MG) were TMG 1179 RR (48.6 bags of 60 kg ha-1), NA 7200 RR (45.6 bags), CD 2737 (41.1 bags), CD 237 (41 bags) and BRS MG 760 SRR (40.6 bags), all of which displayed satisfactory conditions for mechanical harvesting, demonstrating the good performance of the crop in the south region of Minas Gerais State.

Download Full-text

Establishment Techniques on Yield and Economics of Pigeon Pea [Cajanus cajan (L.)] in North Western Zone of Tamil Nadu

Legume Research - An International Journal ◽

10.18805/lr-4261 ◽

2020 ◽

Author(s):

C. Sivakumar ◽

A. Krishnaveni ◽

M. Pandiyan ◽

N. Tamilselvan

Keyword(s):

Cajanus Cajan ◽

Tamil Nadu ◽

Field Experiments ◽

Block Design ◽

Pigeon Pea ◽

Research Station ◽

Net Income ◽

Randomized Block Design ◽

Western Zone ◽

North Western

Field experiments were conducted to study the effect of establishment techniques on yield and economics of red gram [Cajanus cajan (L.)] under irrigated condition at Regional Research Station, Tamil Nadu Agricultural University, Paiyur - 635 112,Tamil Nadu, India during Kharif season of 2013-14 and 2014-15 respectively in randomized block design with four replications. The treatments are line sowing/dibbling of seeds, sowing behind the country plough, sowing in polybag and transplanting at 25 and 40 DAS, sowing in portrays and transplanting in 25 and 40 DAS. The redgram variety LRG 41 was used for study. The results revealed that, dibbling of seeds in lines recorded higher grain yield of 2351 kg ha-1, net income of Rs.99495/- and B:C ratio of 3.39. Thus, dibbling of seeds in lines recorded 6% higher over sowing in poly bag and transplanting at 25 DAS and 27% higher yield over sowing behind the country plough. Considering yield and economics, line sowing seems to better option for the farmers followed by sowing in polybags and transplanted in 25 DAS. Under transplanted situation, transplanting of seedlings at 30 DAS was more suitable where the monsoon was delayed for 30 to 45 days under rainfed situation.

Download Full-text

Planting Density and Soybean (Glycine max L.) Cultivars Effects on Yield Components in the Amazon

Journal of Agricultural Studies ◽

10.5296/jas.v8i3.16277 ◽

2020 ◽

Vol 8 (3) ◽

pp. 63

Author(s):

Priscila Pereira Sacramento ◽

Letícia Cunha da Hungria ◽

Jamil Chaar El-Husny ◽

Luis De Souza Freitas

Keyword(s):

Grain Yield ◽

Plant Height ◽

Yield Components ◽

Block Design ◽

Planting Density ◽

Maximum Height ◽

Soybean Cultivars ◽

Linear Behavior ◽

Randomized Block Design ◽

Glycine Max L

The aim of this study was to evaluate the influence of planting density and cultivar of soybean on yield components in the southeast Amazon. The experiment was carried out in an Oxisol, with a randomized block design in a 2 x 4 factorial scheme. The treatments were two soybean cultivars (BRS 9090 RR and BRS 8990 RR) and four planting densities (13, 15, 18 and 20 plants m-1), with three replications. First pod insertion height (IFP), plant height (H), number of pods per plant (NPP), grain yield (Y) and weight of 100 grains (W100) were evaluated. The insertion height of the first pod showed a tendency of increase with the increment of plants per linear meter for cultivar BRS 8990 RR, different of the behavior observed for the cultivar BRS 9090 RR, which only showed difference when the density of 300.000 plants ha-1 was tested. For plant height, among soybean cultivars, there was only difference in D400, with BRS 8990 RR showing a maximum height of 83.3 cm, 21% higher than BRS 9090 RR. When evaluated under D350, BRS 8990 RR showed an increase of 13% in the number of pods compared to BRS 9090 RR. Both cultivars showed linear behavior for the grain yield, increasing according the plant population, with the highest grain yield obtained under the density of 400.000 plants ha-1 (4527.3 kg ha-1). The weight of 100 grains was not influenced by any variation factor.

Download Full-text

Agronomic and Economic Evaluation of Sequential Spray of Silicon and Fungicides for a Sustainable Soybean Crop

Journal of Agricultural Studies ◽

10.5296/jas.v8i2.15676 ◽

2020 ◽

Vol 8 (2) ◽

pp. 1

Author(s):

Renato Anastácio Guazina ◽

Rosiane Araujo Rodrigues Nass ◽

Gustavo De Faria Theodoro ◽

Ricardo Carneiro Brumatti ◽

Sofia Michele Muchalak ◽

...

Keyword(s):

Sensitivity Analysis ◽

Economic Evaluation ◽

Block Design ◽

Foliar Spray ◽

Positive Control ◽

Soybean Rust ◽

Aluminum Silicate ◽

Gross Margin ◽

Soybean Cultivars ◽

Randomized Block Design

This study was carried out to determine whether the yield of soybean cultivars and the severity of Asian Soybean Rust (ASR) are influenced by foliar spray of silicon exclusively or along with a fungicide mixture, as well as the economic viability of their use for a sustainable crop. The experiment was performed in randomized-block design, five replicates, two soybean cultivars and (2×6) + 2 factorial arrangements: S1 (AlSi at R1 + R4); S2 (AlSi at R1 + R5.1); S3 (AlSi at R1 + FM at R4); S4 (FM at R1 + AlSi at R4); S5 (AlSi at R1 + FM at R5.1); S6 (FM at R1 + AlSi at R5.1); NC and PC (negative and positive control). The economic evaluation and sensitivity analysis were undertaken for Anta 82 RR. There was no interaction effect between the factors, and cultivar CD 2737 had a higher yield. ASR was less severe in CD 2737, and S3 and S5 provided the lowest disease severity. Exclusive spray of aluminum silicate was able to reduce the number of lesions with uredinia, open uredinia and uredinia per lesion. S3 increased grain yield, resulting in higher revenues and a 66.1% gross margin. Sensitivity analysis revealed that S3 was profitable in all scenarios.

Download Full-text

Influence of glyphosate underdoses on the suppression of Panicum maximum cultivars

Arquivos do Instituto Biológico ◽

10.1590/1808-1657000812017 ◽

2018 ◽

Vol 85 (0) ◽

Author(s):

Suzete Fernandes Lima ◽

Leandro Spíndola Pereira ◽

Gustavo Dorneles Sousa ◽

Simonny Araújo Vasconcelo ◽

Adriano Jakelaitis ◽

...

Keyword(s):

Dry Matter ◽

Field Experiments ◽

Block Design ◽

Treatment Plant ◽

Dry Matter Production ◽

Panicum Maximum ◽

Initial Growth ◽

Randomized Block Design ◽

Matter Production ◽

Forage Species

ABSTRACT: The use of herbicide underdoses allows minimizing the competition of grasses on annual crops, enabling simultaneous cultivation. In this context, the objective of this study was to investigate glyphosate underdoses on the suppression of the initial growth of three Panicum maximum cultivars aiming at the integrated cultivation, in addition to the effects of forage species on the incidence and development of weeds. Three field experiments were conducted. The experimental design was a randomized block design with four replications and eight treatments consisting of increasing glyphosate doses (0, 54, 108, 270, 378, 540, 756, and 1,080 g a.e. ha−1). An atrazine dose of 1,200 g a.i. ha−1 was added to each treatment. Plant phytotoxicity assessments were performed at 7, 14, 21, and 28 days after application. At 80 and 125 days after sowing, the assessments of total dry matter production, leaf dry matter, stem dry matter, and leaf to stem ratio were carried out, in addition to density and dry matter production of weed community. Glyphosate underdoses below 215, 65, and 90 g a.e. ha-1 have a potential to be investigated aiming at the management of P. maximum cv. Atlas, P. maximum cv. Mombasa, and P. maximum cv. Tanzania under intercropping. The three forage species are effective in suppressing weeds.

Download Full-text