CULTIVO DA SOJA EM SISTEMAS DE SEMEADURA EM LINHAS CRUZADAS E CONVENCIONAL

2017 ◽  
Vol 32 (1) ◽  
pp. 17
Author(s):  
André Ricardo Rodrigues ◽  
Magno Luiz de Abreu ◽  
Everton Dos Santos de Oliveira
Keyword(s):  
Glycine Max ◽  
Experimental Design ◽  
Population Density ◽  
Dry Matter ◽  
Cropping Systems ◽  
Spatial Arrangement ◽  
Cross Sectional ◽  
Mato Grosso ◽  
Significant Difference ◽  
Glycine Max L

A importância da soja para o agronegócio brasileiro é bastante expressiva, por este motivo existe um número significativo de pesquisas associadas às melhorias de produtividade desta cultura, neste sentido o presente trabalho buscou avaliar o desenvolvimento da soja quanto as suas características de produtividade em sistema de semeadura cruzada. O experimento foi implantado no campo experimental do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis em Latossolo Vermelho Distroférrico típico muito argiloso (68% de argila), com a cultivar TMG 132. O delineamento experimental foi de blocos casualizados em esquema fatorial 2X5, totalizando 10 tratamentos com 3 repetições cada, sendo que o primeiro fator corresponde aos dois sistemas de cultivo (semeadura cruzada e convencional) e, o segundo fator as 5 densidades populacionais (222000 plantas ha-1; 288000 plantas ha-1; 333000 plantas ha-1; 399000 plantas ha-1; 444444 plantas ha-1). Cada parcela foi constituída de 9 linhas de 4 metros, espaçadas em 0,45 metros. Para a área útil da parcela foi utilizado 5 linhas centrais por 2 metros de comprimento. Na área útil das parcelas foram avaliados produtividade, massa seca e os componentes de produção, a adubação foi depositada na linha de semeadura. Não se constatou diferença significativa na produtividade, número de grãos por vagem e na massa de mil grãos tanto nos diferentes sistemas quanto nas populações, como o sistema de semeadura cruzada necessita de maior quantidade de passadas de semeadora na área se constatou uma prática não viável.PALAVRAS-CHAVE: Densidade populacional, arranjo espacial, sistemas de plantio, Glycine max L. SOYBEAN CULTIVATION IN CROSS-SECTIONAL AND CONVENTIONAL SYSTEMSABSTRACT: The importance of soy for Brazilian agribusiness is very expressive, for this reason there is a significant number of research associated with productivity improvements in this culture, in this sense, the present study sought to evaluate the development of soy as the productivity characteristics in seeding system crossed. The experiment was deployed in the experimental field of the Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis in Latossolo Vermelho Distroférrico típico very argillaceous (68% of argil), It was used the cultivar TMG 132. Experimental design was a randomized block in factorial 2X5, totalling 10 treatments with 3 repetitions each, where the first factor corresponds to the two cropping systems (conventional and cross-seeding) and the second factor with 5 population density (222000 plants ha-1; 288000 plants ha-1; 333000 plants ha-1; 399000plants ha-1; 444444 plants ha-1). Productivity cross-seeding system. Each plot consisted of  9 lines of 4 meters, spaced at 0,45 meters, at the useful area of the central portion 5 by 2 meters long lines was used. In the usable area of the plots were evaluated productivity, dry matter and production components, fertilization was deposited in plant line. It did not find significant difference in productivity, number of grains per pods, and in thousand grains weight both in different systems and in populations, such as the system of cross-seeding needs greater quantity of operations in the planting it was not stated a viable practice.KEYWORDS: Population density, spatial arrangement, planting systems, Glycine max L.

Machine learning algorithms to predict the dry matter loss of stored soybean grains ( Glycine max L.)

2021 ◽  
Author(s):  
Juliana Soares Zeymer ◽  
Felipe Guzzo ◽  
Marcos Eduardo Viana Araujo ◽  
Richard Stephen Gates ◽  
Paulo Cesar Corrêa ◽  
...  
Keyword(s):  
Machine Learning ◽  
Glycine Max ◽  
Dry Matter ◽  
Learning Algorithms ◽  
Machine Learning Algorithms ◽  
Dry Matter Loss ◽  
Glycine Max L

scholarly journals Water Use Efficiencies of Different Maturity Group Soybean Cultivars in the Humid Mississippi Delta

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1496
Author(s):  
Srinivasa R. Pinnamaneni ◽  
Saseendran S. Anapalli ◽  
Daniel K. Fisher ◽  
Krishna N. Reddy
Keyword(s):  
Glycine Max ◽  
Water Resources ◽  
Experimental Design ◽  
Grain Yield ◽  
Water Use ◽  
Production System ◽  
Mississippi Delta ◽  
Maturity Group ◽  
Glycine Max L ◽  
Water Use Efficiencies

Introducing alternative cultivars with enhanced water use efficiencies can help alleviate pressure on groundwater for crop irrigations in Mississippi (MS) Delta. A two-year field study was conducted in 2019–2020 to compare the water use efficiencies (WUE) of recently released and pre-released soybean {Glycine max (L.) Merr.} cultivars in maturity group (MG) III (‘P37A78’, ‘LG03-4561-14’), IV (‘Dyna-gro 4516x’, ‘DS25-1, DT97-4290’), and V (‘S12-1362’, ‘S14-16306’) in the MS Delta. The experimental design was a split-plot with cultivar as the first factor and the second factor was water variant irrigation (IR) and no irrigation (RF, rainfed), replicated three times. The MG IV cultivar Dyna-gro 4516x recorded the highest grain yield and WUE: grain yields were 4.58 Mg ha−1 and 3.89 Mg ha−1 under IR and RF, respectively in 2019, and 4.74 Mg ha−1 and 4.35 Mg ha−1 in 2020. The WUE were 7.2 and 6.9 kg ha−1 mm−1, respectively, in 2019 under IR and RF, and 13.4 and 16.9 kg ha−1 mm−1 in 2020. The data reveals that ‘Dyna-gro 4516x’ (MG IV), ‘LG03-4561-14’ (MG III), and ‘P37A78’ (MG III) are best adapted to the early soybean production system (ESPS) in MS Delta region for sustainable production for conserving water resources.

scholarly journals PHOSPHORUS NUTRITION OF SOYBEANS AS AFFECTED BY PLACEMENT OF FERTILIZER PHOSPHORUS

1983 ◽  
Vol 63 (2) ◽  
pp. 199-210 ◽  
Author(s):  
C. W. BULLEN ◽  
R. J. SOPER ◽  
L. D. BAILEY
Keyword(s):  
Glycine Max ◽  
Total Phosphorus ◽  
Dry Matter ◽  
Field Experiments ◽  
Seedling Emergence ◽  
Phosphorus Uptake ◽  
Growth Chamber ◽  
Grain Yields ◽  
Chamber Experiment ◽  
Glycine Max L

Growth chamber and field experiments were conducted on Southern Manitoba soils, low in available soil phosphorus, to investigate the effects of various placement methods and levels of phosphorus fertilizer on soybean (Glycine max (L.) Merrill ’Maple Presto’). It was found that soybean responded well to applied phosphorus on low-P soil in growth chamber studies. In the first growth chamber experiment, P was applied in solution to 100%, 50%, 25%, 12.5% and 1% of the total soil volume. Dry matter yields, total phosphorus uptake and utilization of fertilizer P increased at each level of applied P as the size of the phosphated band was decreased. The results were partly attributed to greater chemical availability of P in the smaller zones of P fertilizer reaction. In a second growth chamber experiment, soybeans responded differently to phosphorus banded in six different locations. Placement of the fertilizer 2.5 cm directly below the seed was more effective in increasing dry matter yield, total phosphorus uptake and fertilizer P utilization than placement 2.5 cm and 5 cm away at the same depth or placement 5 cm below the seed, whether the band was directly below, 2.5 cm away or 5 cm away. Soybean yield responses in the field were greatest with P banded 2.5 cm directly below the seed on low-P soils. Placement of P 2.5 cm below the seed resulted in grain yields that were 64% and 50% higher (at the two sites) than those obtained in control plots. Sidebanding P, 2.5 cm below and 2.5 cm away from the seed at the same level of application, improved grain yields of control plots by 40% and 39%. Seed placement and broadcast applications of P were not as effective in increasing grain yields. Broadcasting P in fall or in spring at rates of up to 52.38 kg P/ha did not result in significantly higher grain yields than those obtained in control plots. Placement of P in contact with the seed appeared to reduce seedling emergence, resulting in depressed yields when 52.38 kg P/ha were applied. Key words: Glycine max L. Merrill, ’Maple Presto’

scholarly journals Dynamics of Intercepted Solar Radiation to Simulate Dry Matter of Soybean (Glycine Max (L.) Merrill)

Agromet ◽  
2017 ◽  
Vol 31 (1) ◽  
pp. 43
Author(s):  
Pono Ngatui ◽  
. Handoko ◽  
Bregas Budianto ◽  
Marliana Tri Widyastuti
Keyword(s):  
Glycine Max ◽  
Solar Radiation ◽  
Dry Matter ◽  
Plant Biomass ◽  
P Value ◽  
Modeling Experiment ◽  
Glycine Max L ◽  
Generative Phase ◽  
Intercepted Solar Radiation ◽  
Intercepted Radiation

<p>Solar radiation greatly affects the development of plant biomass. The process of plant development is complex. Here, we simplified this complexity through modeling experiment by integrating climate variables. This study aims to determine the dynamics of canopy intercepted solar radiation under soybean (<em>Glycine Max (L.) Merrill</em>). We employed the shierary-rice model to calculate plant biomass. The results showed that intercepted radiation continuosly increased during vegetative phase, whereas the radiation remains constant during generative phase. Our observation confirmed that the pattern of intercepted radiation followed the angular pattern of sunlight. The intercepted radiation was optimum at 10:00 to 14:00 pm, and it was used to form the plant dry matter. We found that the intercepted radiation contributed until 12%. Based on this contribution, we built our crop model of soybean biomass. Our model performed well in simulating dry biomass with high R<sup>2</sup> (0.9), and as indicated by the plot 1:1 between dry matter of model and field observations. Further, the result of t test between model and observed data confirm this strong corelation (<em>p-value</em> 0.07).</p>

scholarly journals BASELINE DRIVING MILEAGE PREDICTS STATE-REPORTED CRASHES ACROSS 5 YEARS

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S343-S343
Author(s):  
Junyan Tian ◽  
Sara A Freed ◽  
Lesley Ross
Keyword(s):  
Older Adults ◽  
Population Density ◽  
The United States ◽  
Future Research ◽  
Cross Sectional ◽  
Healthy Older Adults ◽  
Crash Data ◽  
Significant Difference ◽  
Cross Sectional Design ◽  
Testing Site

Abstract Although annual driving mileage has frequently been examined as a predictor of crashes among older adults, most research used cross-sectional design and relied on self-reported crash data. This study used multivariate regression to examine the number of state reported at-fault crashes between groups of low (14,000km) self-reported annual distance over five years. Additionally, key factors of interest including age, gender, and population density were examined as predictors. The sample included 519 healthy older adults aged 65-90 (M=73.17, SD=5.56) across five sites in the United States. 12% of participants experienced a crash across five years, and among those who crashed, the majority (87%) experienced one crash (range 0-3 crashes). After controlling for age, gender and testing site, people in the high annual mileage group had a greater number of crashes compared to the low mileage group (β=.14, t(513)=2.37, p=.02). There was not a significant difference in number of prospective crashes between the low and medium group. Also, people who drove in sites with low population density had more crashes than those who in high population density sites (β=.10, t(513)=2.24, p=.03). Higher age was associated with a greater number of prospective crashes (β=.01, t(513)=3.67, p =.002); however, gender was not a significant predictor of crashes. Our results highlight the importance of examining prospective crashes over time, and taking mileage and population density into consideration. Future research should examine trajectories of driving exposure in relation to prospective crashes using multilevel modeling.

scholarly journals Scaptocoris castanea (Perty, 1830) (Hemiptera, Cydinidae) em área produtora de Glycine max (L.) no município de Primavera do Leste, Mato Grosso

2013 ◽  
Vol 35 (84) ◽  
Author(s):  
Luís Felipe Cavalli Pessa ◽  
Edinalva Oliveira ◽  
Rodrigo Penna Nogueira
Keyword(s):  
Glycine Max ◽  
Mato Grosso ◽  
Glycine Max L

Uma população do percevejo-castanho-da-raiz foi estudada no município de Primavera do Leste, estado do Mato Grosso. As coletas foram realizadas de junho a outubro de 2005, em cinco estratos de profundidade: 10, 20, 30, 60 e 120 cm. Foram registrados 865 indivíduos; dentre estes, Scaptocoris castanea esteve presente em 621 exemplares. Essa população registrou basicamente dois estágios de desenvolvimento: ninfas (n = 303) e adultos (n = 318). As ninfas foram mais abundantes em julho e adultos em junho e outubro. Ninfas e adultos foram encontrados em todas as profundidades. Entretanto, uma maior concentração ocorreu entre 30 e 120 cm. Em relação aos adultos, 87 eram machos e 231 fêmeas. Houve uma relação positiva entre a abundância de S. castanea e a pluviosidade, porém a temperatura pareceu não influenciar a espécie no local.

scholarly journals Evaluation of Biomass Yield and Nutritional Composition of Soybean (Glycine Max (L.)Merrill) Varieties Grown in Low Land Areas of Eastern Amhara, Ethiopia

2020 ◽  
Author(s):  
Abito Asres ◽  
Solomon Tiruneh
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Dry Matter ◽  
Biomass Yield ◽  
Block Design ◽  
Nutritional Composition ◽  
Dry Matter Yield ◽  
Combined Analysis ◽  
Strong Evaluation ◽  
Glycine Max L

The experiment was conducted in three locations Jari, Chefa and Sirinka of Eastern Amhara to select the best performing varieties, in terms of biomass yield, chemical composition, haulm yield, seed yield and other agronomic characteristics of Glycine max (L.) Merrill grown under the rain- fed condition of lowland areas of Eastern Amhara in a randomized complete block design with tree replications. Twelve released soybean varieties were Afgat ,Belesa-95, Boshe , Cheri , Dhidhessa, Gishama , Gizo, Korme, Pawe-03, katta, Wegayen and Wollo were used as a treatments. The seeds were planted in 40 cm between rows and 10 cm between plants on a plot size of 3.2m*4m. Spacing between blocks and plots were 1 and 0.5m, respectively. The seed rate was 60 kg/ha and a fertilizer rate 100 kg/ha NPS was applied during seed planting. The combined analysis of variance over two years at location Jari for dry matter yield of varieties Afgat, Gizo, Pawe-03, Wogayen and Wollo were significantly higher as compared to other soybean varieties. The combined analysis across locations at Jari and Sirinka (2019-second year) showed that varieties Afgat, Gishama, Gizo, Pawe-03, Wogayen and Wollo had higher dry matter yield and varieties Gishama (3.97 t/ha), Gizo (3.60 t/ha), Pawe-03 (4.04 t/ha) and Wogayen (3.36 t/ha) had higher haulm yield as compared with other varieties. The combined analysis across locations at Jari and Sirinka (2019) showed that varieties Pawe-03(2951 kg/ha), Gizo (2862 kg/ha), Afgat (2859 kg/ha), Gishama (2654 kg/ha),Wollo (2461 kg/ha) and Wogayen (2404 kg/ha) had higher seed yield as compared with other varieties. The variety Wollo gave higher crud protein content in two locations (Jari and Sirinka) .Therefore, varieties Afgat, Pawe-03 and Wollo were recommends for the given areas of Jari , Chefa, Sirinka and could be produced in similar environments for the best of produced optimal amount of dry matter, haulm and seed yield and good protein supplement for production of ruminants.Thus, further researches will be needed to investigate on the utilization of livestock.

Sign in / Sign up

Export Citation Format

Share Document