RATE OF ACCUMULATION OF DRY WEIGHT IN SEED OF SOYBEANS AND ITS RELATIONSHIP TO YIELD

1975 ◽  
Vol 55 (1) ◽  
pp. 215-219 ◽  
Author(s):  
D. B. EGLI
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Significant Relationship ◽  
Seed Weight ◽  
Accumulation Rate ◽  
Dry Weight ◽  
Seed Number ◽  
Planting Dates ◽  
Glycine Max L ◽  
Rate Of Accumulation

The dry weight accumulation rate in soybean (Glycine max (L.) Merrill) seed was measured for 2 yr (1971–72), utilizing four cultivars and several planting dates within each year. Rates observed ranged from 3.38 to 8.32 mg/seed/day. There were significant differences among cultivars and planting dates. There was no significant relationship between the rate of accumulation and grain yield, seed weight or final seed number. Grain yield was closely correlated with final seed number both within each year and across both years.

scholarly journals Action of growth regulators on production of soybean cultivar Davis

1981 ◽  
Vol 38 (1) ◽  
pp. 127-138 ◽  
Author(s):  
Paulo R.C. Castro ◽  
Roberto S. Moraes
Keyword(s):  
Glycine Max ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Seed Weight ◽  
Dry Weight ◽  
Soybean Plant ◽  
Trimethylammonium Chloride ◽  
Seed Number ◽  
Exogenous Growth ◽  
Soybean Plants

This research deals with the effects of exogenous growth regulators on production of soybean plant (Glycine max cv.. Davis) under greenhouse conditions, At the flower anthesis, 2,3,5-triiodobenzoic acid (TIBA) 20 ppm was applied. Other two applications with TiBA, with intervals of four days, were realized. Before flowering, Agrostemin (1 g/10 ml/3 1), gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm were applied. It was observed that CCC and TIBA reduced stem dry weight. Soybean plants treated with TIBA reduced weight of pods without seeds , seed number and seed weight.

scholarly journals Effect of water hyacinth compost on the morpho-physiological parameters of Soybean (Glycine max l.)

2021 ◽  
Vol 2 (1) ◽  
pp. 084-095
Author(s):  
Ogbuehi HC ◽  
Ibe PK
Keyword(s):  
Glycine Max ◽  
Leaf Area ◽  
Plant Height ◽  
Water Hyacinth ◽  
Seed Weight ◽  
Dry Weight ◽  
Effect Of Water ◽  
Shoot Dry Weight ◽  
Glycine Max L ◽  
Number Of Leaves

A pot experiment was conducted under rainfed condition to study the effect of water hyacinth compost on the morpho-physiological parameters of soybean (Glycine max L.) at the Teaching and Research Farm of Faculty of Agriculture and Veterinary Medicine, Imo State University, Owerri. The treatments were control (T1) 100g (T2), 150g (T3) and 200g (T4) of water hyacinth compost and replicated four times. The treatments were arranged in Complete Randomized Design (CRD). The parameters measured were plant height, number of leaves, leaf area (cm2), leaf area index, relative growth rate (RGR), Net assimilation rate (NAR), shoot dry weight(g), yield and yield components (Number of pods, pods weight, 100 seed weight). The results obtained indicated that T3 significantly produced highest plant height (57.6cm) compare to control. While it was observed that T4 (200g) significantly produced the highest number of leaves (233.25), leaf area (631.80cm2), shoot dry weight (15.445g), number of pods (129.75), pod weights (25.38g) seed weight (7.23g) and yield (0.72kg/ha) relative to control and other treatment levels. Root parameters were also significantly improved by the rates of water hyacinth application compared to control. It will be worthy to note that there was no nodulation perhaps that was why the yield was poor. The results showed that soybean growth can effectively be improved with incorporation of water hyacinth into soil.

scholarly journals Effect of Nitrogen Fertilizer Applications on Nitrogen Remobilization and Grain Yield in Soybean (Glycine max [L] Merril) in the Savelugu-Nanton Municipality in Northern Region of Ghana

2021 ◽  
Vol 9 (8) ◽  
pp. 1514-1523
Author(s):  
John Bokaligidi Lambon ◽  
Joseph Sarkodie- Addo ◽  
James Mantent Kombiok
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Growth Parameters ◽  
Block Design ◽  
Dry Weight ◽  
Northern Region ◽  
Growth And Yield ◽  
Nitrogen Remobilization ◽  
Glycine Max L ◽  
N Remobilization

Two experiments were conducted in the Savelugu-Nanton Municipality of the Northern Region of Ghana in 2012 and 2013 to assess the effect of N fertilizer on growth, N remobilization and grain yield of three local varieties of soybean (Glycine max [L] Merill). The experiments were a 3 x 4 factorial laid in Randomized Complete Block Design (RCBD) with four replications. Factor A was soybean varieties (Jenguma, Quarshie, Ahotor); Factor B was 0, 15, 30 and 45 kg N ha-1. The experimental fields were planted manually on the flat by drilling and later thinned to 2 plants hill-1 at 0.50 m × 0.10 m with a population of about 400 000 plants ha-1. Growth and yield parameters measured were plant height, nodule number plant-1, nodule dry weight plant-1, percent nodule effectiveness, number of pods plant-1, number of seeds pod-1, 100 seed weight, harvest index and grain yield. The results showed that the control recorded lower figures in all growth parameters. Nitrogen remobilization was also observed in all plots, which indicate that soybean needs greater levels of N during grain filling. Again, N remobilization and soybean yield were highest in the 45 kg N ha-1 treatment compared to the other treatments. However, considering the overall yields, farmers in the study area should be advised to adopt starter N fertilization of soybean for higher yields as the soils are highly degraded in soil fertility.

scholarly journals THE EFFECT OF VERMICOMPOST ON THE GROWTH OF SOYBEAN (Glycine max L.)

2020 ◽  
Vol 2 (1) ◽  
pp. 18-23
Author(s):  
Sri Pratiwi Aritonang
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Seed Weight ◽  
Dry Weight ◽  
Glycine Max L ◽  
Number Of Branches

The growth and production of soybean (Glycine max L) fertilized by vermicompost was conducted. The vermicompost used consisted of 4 levels, namely: K0 = no vermicompost, K1 = 60 g, K2 = 90 g and K3 = 120 g, each treatment was replicate 3 times. The results showed that the dose of vermicompost significantly affected to the number of branches, number of pods and seed weight, however the organic vertilizer not significantly affected on plant height, flowering age, number of empty pods and seeds dry weight. The interaction dose of vermicompost has no significant effect on plant height, number of branches, flowering age, number of pods, number of filled pods, number of seed and 100 seeds dry weight.

scholarly journals An Assessment of Soybean (Glycine max, L. Merrill) Grain Yield in Different Environments Using AMMI and GGE Biplot Models in Humidorest Fringes of Southeast Nigeria

2015 ◽  
Vol 48 (3-4) ◽  
pp. 82-90 ◽  
Author(s):  
Richmond Emuohwo Edugbo ◽  
Godson Emeka Nwofia ◽  
Lawrence Stephen Fayeun
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Positive Interactions ◽  
Gge Biplot ◽  
Planting Dates ◽  
Genotype By Environment ◽  
Main Effect ◽  
Glycine Max L ◽  
Superior Genotypes ◽  
Target Set

Abstract The yield of four soybean (Glycine max, L. Merrill) genotypes under six planting dates in two years was assessed using the Additive Main Effect and Multiplicative Interaction (AMMI) and Genotype and Genotype-by-Environment biplot models. The results of combined analysis of variance for grain yield of the four genotypes of soybean grown in 12 environments showed that soybean grain yield was significantly (P < 0.01) affected by environments (E), genotypes (G) and genotype by environment interactions (GE). Genotypes and environments accounted for about 6.56% and 47.66% of the variation, respectively, while the GE explained 14.47% of the variation, which is more than double of the genotypic effects of the total variation. AMMI biplot indicated genotype TGx1485-1D and the early July 2012 environment were above average for grain yield and had positive specific interactions with each other. However, TGx1485-1D had negative interactions with the other environments while genotypesTGx14482E, TGx1987-10F and TGx1835-10E had positive interactions with all the environments except E5. In the differential yield ranking of genotypes across the twelve environments TGx1485-1D had the highest yield in seven out of the twelve environments. TGx1835-10E was the highest yielding genotype in three environments, while TGx1448-2E gave the greatest yield in two environments. Although TGx1485-1D exhibited high GEI, in the GGE biplot it was ranked as the most desirable genotype. GGE biplot identified early July 2012(E5) as the best environment. The result showed that application of AMMI and GGE biplots facilitates visual comparison and identified superior genotypes for each target set of environments.

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 Evaluation by grafting technique of changes in the contribution of root-to-shoot development and biomass production in soybean (Glycine max) cultivars released from 1929 to 2006 in China

2019 ◽  
Vol 70 (7) ◽  
pp. 585 ◽  
Author(s):  
Xiaoning Cao ◽  
Tingting Wu ◽  
Shi Sun ◽  
Cunxiang Wu ◽  
Caijie Wang ◽  
...  
Keyword(s):  
Glycine Max ◽  
Shoot Growth ◽  
Field Experiments ◽  
Root Traits ◽  
Dry Weight ◽  
Shoot Development ◽  
Node Number ◽  
Grafting Technique ◽  
Glycine Max L ◽  
Soybean Roots

Root traits are essential for optimising nutrient and water absorption and anchorage. However, changes in root traits and the contribution of root-to-shoot growth and development of soybean (Glycine max (L.) Merr.) across a century of breeding are poorly documented. In this study, we adopted a grafting technique, using 55 cultivars released in the three main soybean-production regions in China as rootstocks in a pot experiment and 24 cultivars from the Yellow-Huai-Hai Valley (YHH) region as rootstocks in a field experiment, with cv. Zigongdongdou as the common scion. Changes in soybean roots, including dry weight (DW) of roots, lateral root number (LRN) and taproot length (TRL), and their contribution to shoot development and biomass formation, including shoot DW, plant height and node number, were evaluated under optimal conditions in 2011. Aboveground traits declined with year of release in the YHH region and did not vary over time in the northern Heilongjiang province and mid-south Heilongjiang region except for shoot DW. The root traits root DW, LRN and TRL were similar over years of release in the pot and field experiments. The results suggest that the newer cultivars have lesser shoot growth and root capacity but the same amount of root growth as older cultivars. Root traits did not change during selection, suggesting that improvement in soybean root traits should be an aim in future breeding.

scholarly journals Simulated mesotrione drift followed by glyphosate, imazethapyr, bentazon or glyphosate plus chlorimuron in soybean

2009 ◽  
Vol 89 (2) ◽  
pp. 265-272
Author(s):  
L. R. Brown ◽  
D. E. Robinson ◽  
K. Chandler ◽  
C. J. Swanton ◽  
R. E. Nurse ◽  
...  
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Plant Height ◽  
Seed Yield ◽  
Plant Density ◽  
Dry Weight ◽  
Shoot Dry Weight ◽  
Glycine Max L ◽  
Herbicide Drift

There have been anecdotal accounts of increased crop sensitivity due to herbicide drift followed by an in-crop herbicide. An experiment was conducted from 2005 to 2007 at Elora, Ridgetown, and Woodstock, Ontario, to determine the effects of simulated mesotrione drift followed by in-crop applications of glyphosate, imazethapyr, bentazon and glyphosate plus chlorimuron on glyphosate-resistant soybean [Glycine max (L.) Merr.] visual injury, plant height, plant density, shoot dry weight, and seed yield. As the rate of simulated mesotrione drift increased, there was an increase in soybean injury and a decrease in shoot dry weight, height, and yield. Simulated mesotrione drift followed by bentazon resulted in synergistic responses in injury shortly after application in some environments. This increase in injury was transient, with no synergistic responses in density, shoot dry weight, and yield. In contrast, antagonistic responses were observed when glyphosate, imazethapyr, or glyphosate plus chlorimuron were applied after simulated mesotrione drift in some environments. Further research is required to develop a better understanding of the interactions of drift followed by the application of an in-crop herbicide. Key words: Bentazon, chlorimuron, glyphosate, imazethapyr, mesotrione, synergism

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