Dry Matter Accumulation in Eight Soybean ( Glycine max (L.) Merrill) Varieties 1

1971 ◽  
Vol 63 (2) ◽  
pp. 227-230 ◽  
Author(s):  
J. J. Hanway ◽  
C. R. Weber
Keyword(s):  
Glycine Max ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Glycine Max L

N2 fixation and dry matter and N accumulation in soybean lines with different seed-fill periods

1992 ◽  
Vol 72 (4) ◽  
pp. 1067-1074 ◽  
Author(s):  
B. L. Vasilas ◽  
R. L. Nelson
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
N Accumulation ◽  
Total N ◽  
Glycine Max L ◽  
Small Plot ◽  
Total Plant ◽  
Seed Fill

A positive relationship generally exists between the duration of seed-fill period (SFP) and seed yield in soybean, but exceptions have been reported. The objective of this research was to determine if differences in N2 fixation or N accumulation could explain inconsistent relationships between duration of SFP and seed yield in soybean. For this study, five experimental soybean (Glycine max L. [Men.]) lines were selected on the bases of differences in SFP and seed yield in previous experiments. The experiment was designed to compare lines differing in both SFP and seed yield, differing in SFP but not seed yield, and differing in seed yield but not SFP. Total N2 fixation, using 15N-dilution techniques; total N accumulation, using a semi-micro-Kjeldahl procedure; and total dry matter accumulation, including all vegetative material abscised before maturity were measured on these lines grown in a Flanagan silt loam (fine, montmorillonitic, mesic Aquic Argiudolls) in 1984 and 1985 at Urbana, IL. Mean dinitrogen fixed ranged from 36 to 76 kg ha−1 in 1984 and from 65 to 113 kg ha−1 in 1985. The percentage of the total plant N derived from fixation ranged from 17 to 35% in 1984 and from 32 to 48% in 1985. Statistically significant differences in seed yield were not detected in this experiment because of the high coefficient of variation associated with the small plot size. High N2 fixation was not related to duration of SFP or previous seed yield classification. Total plant N did not differ among these genotypes. For these soybean lines differences in duration of SFP and previous seed yield classification were not related to total N2 fixation or N accumulation.Key words: Glycine max, harvest index, N partitioning, N2 fixation, seed-fill period

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 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 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.

scholarly journals Yield Response of Soybean (Glycine max L.) Genotypes to Water Deficit Stress

2017 ◽  
Vol 19 (2) ◽  
pp. 51-60 ◽  
Author(s):  
Afsana Mimi ◽  
MA Mannan ◽  
QA Khaliq ◽  
MA Baset Mia
Keyword(s):  
Water Stress ◽  
Water Deficit ◽  
Yield Components ◽  
Dry Matter ◽  
Research Field ◽  
Yield Response ◽  
Water Deficit Stress ◽  
Dry Matter Accumulation ◽  
Soybean Genotypes ◽  
Glycine Max L

An experiment was carried out at research field of Agronomy, Department of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur from December 2013 to April 2014. Four soybean genotypes viz. i) G 00022 ii) Galarsum iii) BARI Soybean-5 and iv) G 00197 were grown in the field to evaluate the effects of water deficit stress on dry matter accumulation and yield. Plants were subjected to water stress that is irrigation was withdrawn at Blooming stage (R1) and Full Pod (R4 stages up to maturity. Dry matter accumulation, yield and yield components were reduced by the soil water deficit stress and reduction was higher at R1 stage than R4 stage of water stress. Among the genotypes, G 00022 showed the highest tolerance, while G 00197 was highly susceptible in all the water stress conditions. It was found that higher water deficit stress tolerance in G 00022 was associated with higher accumulation of leaf, stem, root and total dry matter under water stress condition.Bangladesh Agron. J. 2016 19(2): 51-60

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