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

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.

Effect of Rhizobium inoculation to nodulation and growth of soybean [Glycine max (L.) Merrill] Germplasm

2018 ◽  
Author(s):  
Sakka Samudin ◽  
Heru Kuswantoro
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Root Nodules ◽  
Dry Weight ◽  
Limiting Factor ◽  
Rhizobium Inoculation ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Glycine Max L ◽  
Inoculation Treatment

Nitrogen is an important macronutrient mineral that is needed in the largest amount by the plant and is the main limiting factor for plant development. Rhizobium is a group of bacteria capable of providing nutrients for soybean crops. When symbiotic with legume crops, this group of bacteria is able to infect plant roots and form root nodules. The study aimed to investigate the effect of Rhizobium on nodulation and growth of some soybean germplasm. The results showed no interaction between the inoculation treatment and the genotype. The significant effect of inoculation was shown by the number of nodules, nodule dry weight, root length, and root dry weight. Inoculation did not affect plant height and shoot dry weight. These traits were more influenced by genetic factors. In the condition without inoculation, the root length was higher but the root dry weight was lower. Plant height differed between the genotypes. KPT5 and KPT6 showed the highest plant height than any other genotypes. Both genotypes also had the highest shoot dry weight. The highest shoot dry weight was also achieved by KPT4.

scholarly journals Physiological performance of wheat seeds coated with micronutrients

2013 ◽  
Vol 35 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Lizandro Ciciliano Tavares ◽  
Cassyo de Araújo Rufino ◽  
André Pich Brunes ◽  
Felipe Freire Friedrich ◽  
Antonio Carlos Souza Albuquerque Barros ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Seed Yield ◽  
Dry Weight ◽  
Physiological Performance ◽  
Shoot Dry Weight ◽  
Physiological Quality ◽  
Net Assimilation ◽  
Wheat Seeds

The objective of this study was to evaluate the physiological performance of wheat seeds coated with micronutrients. The treatments were combinations of two products based on micronutrients, product "A": 780.0 g.L-1 of zinc and product "B": 182.4, 7.6 and 45.6 g.L-1 of zinc, boron and molybdenum, respectively, with five dosages of the products: 0, 1, 2, 3 and 4 mL. kg-1 seed, totaling 10 treatments with four replications. Physiological quality of the treated seed was evaluated from germination and vigor tests and the early plant growth from determinations of shoot dry weight, plant height and leaf area at 10, 20 and 30 days after emergence (DAE), as well as the rate of crop growth, relative and net assimilation. Seed yield and physiological quality were determined after harvest. It was concluded that coating wheat seeds with the product "A" , based on zinc and "B", consisting of zinc, boron and molybdenum, respectively, up to a dosage of 4 mL.kg-1 seed, did not adversely affect the physiological quality of the treated seeds or those produced. Both products tested resulted in increases in leaf area, plant height and shoot dry weight up to 30 DAE, as well as a higher seed yield.

Effect of barley plant density on wild oat interference, shoot biomass and seed yield under zero tillage

1999 ◽  
Vol 79 (4) ◽  
pp. 655-662 ◽  
Author(s):  
J. T. O'Donovan ◽  
J. C. Newman ◽  
K. N. Harker ◽  
R. E. Blackshaw ◽  
D. W. McAndrew
Keyword(s):  
Seed Yield ◽  
Yield Loss ◽  
Plant Density ◽  
Interactive Effect ◽  
Dry Weight ◽  
Barley Plant ◽  
Wild Oat ◽  
Zero Tillage ◽  
Shoot Dry Weight ◽  
Plant Densities

There has been little research aimed at developing regression models to describe the effects of barley and wild oat plant density on barley yield loss, or wild oat biomass and seed yield. Such models are an important component of integrated weed management systems, and can help determine when weed control with herbicides is economical. Field experiments were conducted over 4 yr at Vegreville, Alberta, to determine the interactive effects of wild oat and barley plant density on barley and wild oat variables in a zero tillage system. A nonlinear regression model in most cases provided good descriptions of barley yield loss, wild oat shoot dry weight, and wild oat seed yield as functions of wild oat and barley plant densities. The interactive effect of wild oat and barley plant density on percentage barley yield loss did not differ significantly (P = 0.05) among years. A pooled regression model describing barley yield loss accounted for 57% of the variation, and provides a means of estimating yield loss due to wild oat in barley grown under zero tillage. Barley yield loss increased as wild oat density increased but the magnitude of the yield loss diminished with increasing barley plant density. Wild oat economic threshold densities varied among years, and were strongly influenced by barley price and expected wild oat-free yield. Economic thresholds were greater at higher barley plant densities. Barley seed weight decreased with increasing barley plant density, and to a lesser extent with increasing wild oat density. The interactive effect of wild oat and barley plant density on wild oat seed yield varied significantly with year, and appeared to be influenced by climatic conditions. The cooler, wetter spring of 1996 favored wild oat seed production (by several orders of magnitude) compared with the relatively warmer and drier spring of 1995. Each year wild oat seed yield and shoot dry weight decreased as barley plant density increased. The results suggest that seeding barley at relatively high rates may reduce the need for wild oat control with herbicides in zero tillage systems. Key words: Zero tillage, wild oat interference, barley seeding rate, nonlinear regression

Heritability in the early nodulation of F3 and F4 soybean lines

1997 ◽  
Vol 77 (2) ◽  
pp. 201-205 ◽  
Author(s):  
D. L. Pazdernik ◽  
P. H. Graham ◽  
J. H. Orf
Keyword(s):  
Glycine Max ◽  
Growth Stage ◽  
Dry Weight ◽  
Plant Performance ◽  
Nodule Development ◽  
Plant Introductions ◽  
Shoot Dry Weight ◽  
Glycine Max L ◽  
Shoot Mass ◽  
Two Populations

We have previously identified differences among soybean [Glycine max (L.) Merr.] lines in early nodulation and N2 fixation, and related early nodule development and overall plant performance under N-limited field conditions. The objectives of the present study were: 1) to estimate heritabilities for nodule fresh weight (NFW), shoot dry weight (SDW), and root dry weight (RDW) determined 17 d after inoculation (DAI); 2) to examine genetic variation for total nodule soluble protein (TSOLP) at 17 DAI, and SDW and shoot N derived from fixation (SNdfa) at the R5 growth stage; and 3) to assess relationships between early nodulation and subsequent R5 shoot mass and SNdfa. The two populations used were derived from the Minnesota-adapted cultivars Kasota and Parker, and two plant introductions PI 437966 and PI 384469B. Genetic variances within populations were significant for most traits measured at 17 DAI, and at the R5 growth stage. Heritability estimates ranged from 0.79–0.82 for NFW, 0.51–0.56 for SDW, and 0.38–0.40 for RDW, with SDW also correlated with seed size at 17 DAI (r = 0.88**). Additional correlation analyses showed SNdfa correlated with NFW (r = 0.33**) and TSOLP (r = 0.46**). The results of this study suggest that gains from selection are possible for NFW and SDW at early stages of plant development. Key words: Glycine max (L.) Merr., nodulation, nitrogen fixation, heritabilitynot available

OAC Salem soybean

1998 ◽  
Vol 78 (4) ◽  
pp. 629-630
Author(s):  
J. W. Tanner ◽  
B. M. Luzzi ◽  
W. Montminy ◽  
P. Gostovic ◽  
D. J. Hume
Keyword(s):  
Glycine Max ◽  
Protein Content ◽  
Key Words ◽  
Plant Height ◽  
Soybean Cultivar ◽  
Glycine Max L ◽  
Cultivar Description

OAC Salem is a 2450 CHU soybean (Glycine max [L.] Merr.) cultivar. It has greater yield and plant height than check cultivars of similar maturity and normal oil and protein content. Key words: Soybean, cultivar description

OAC Thames soybean

1998 ◽  
Vol 78 (4) ◽  
pp. 633-634
Author(s):  
J. W. Tanner ◽  
B. M. Luzzi ◽  
W. Montminy ◽  
P. Gostovic ◽  
D. J. Hume
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Plant Height ◽  
Oil Content ◽  
Seed Oil ◽  
Soybean Cultivar ◽  
Seed Oil Content ◽  
Glycine Max L ◽  
Cultivar Description ◽  
The Mean

Thames is a 3025 CHU soybean (Glycine max [L.] Merr.) cultivar that had slightly higher yields than the mean of the checks, similar plant height, low lodging and high seed oil content. Key words: Soybean, cultivar description

scholarly journals Reaction of soybean [Glycine max (L.) Merr.] to seed inoculation with Bradyrhizobium japonicum bacteria

2020 ◽  
Vol 66 (No. 5) ◽  
pp. 242-247
Author(s):  
Wacław Jarecki
Keyword(s):  
Glycine Max ◽  
Seed Yield ◽  
Total Protein ◽  
Bradyrhizobium Japonicum ◽  
Dry Weight ◽  
Total Protein Content ◽  
Seed Inoculation ◽  
Glycine Max L ◽  
Soybean Roots ◽  
Fat Yield

The aim of the study was to assess soybean response to sowing material inoculation with HiStick® Soy preparation, containing Bradyrhizobium japonicum. Based on the obtained results, it was found that the inoculation significantly increased the number and dry weight of nodules on soybean roots compared to control. The bacterial preparation significantly increased the number of pods per plant. As a result, a significant increase in seed yield (0.58 t/ha) was obtained compared to control. HiStick® Soy increased total protein content in seeds. Protein and fat yield was higher after seed inoculation by 318 kg/ha and 101 kg/ha, respectively, compared to control.

scholarly journals Growth and Production of Determinate and Indeterminate Soybean (Glycine max L.) Influenced by Salinity Stress

2020 ◽  
Vol 142 ◽  
pp. 03004
Author(s):  
Danang Adriansyah ◽  
Karno ◽  
Florentina Kusmiyati
Keyword(s):  
Glycine Max ◽  
Plant Height ◽  
Salinity Stress ◽  
Dry Weight ◽  
Root Weight ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Growth Types ◽  
Shoot Weight ◽  
Pod Number

This research was aimed to determine growth and production of two different growth types of soybean (Glycine max L.) influenced by salinity stress at various levels. This research used Factorial Design based on Completely Randomized Design 2x4 with ten replications. Two soybean growth types were used as the first factor (G1 = Determinate ; G2 = Indeterminate). The second factor was the various levels of soil salinity (S0 = 0.42 dS∙m-1; S1 = 2.93 dS∙m-1; S2 = 4.74 dS∙m-1; S3 = 6.03 dS∙m-1). Data were subjected to analysis of variance and tested further using Tukey’s Honestly Significant Differences (HSD). Parameters observed were plant height (cm), shoot weight (g), shoot dry weight (g), root length (cm), root weight (g), root dry weight (g), and total pod number. Results showed that indeterminate soybean is the best growth type to be planted in salinity stress based on plant height, shoot weight, shoot dry weight, root length, root weight, root dry weight, and total pod number, significantly different from determinate soybean. Salinity stress under 2.93 dS∙m-1 had the better results in plant height, root weight, and root dry weight.

Tolerance of adzuki bean to pre-emergence herbicides

2015 ◽  
Vol 95 (5) ◽  
pp. 959-963 ◽  
Author(s):  
Nader Soltani ◽  
Robert E. Nurse ◽  
Christy Shropshire ◽  
Peter H. Sikkema
Keyword(s):  
Adverse Effect ◽  
Plant Height ◽  
Seed Yield ◽  
Weed Management ◽  
Dry Weight ◽  
Adzuki Bean ◽  
Seed Moisture Content ◽  
Shoot Dry Weight ◽  
Seed Moisture ◽  
Plant Stand

Soltani, N., Nurse, R. E., Shropshire, C. and Sikkema, P. H. 2015. Tolerance of adzuki bean to pre-emergence herbicides. Can. J. Plant Sci. 95: 959–963. Limited pre-emergence herbicide options are available for weed management in adzuki bean in Ontario. Eight field trials were conducted in Ontario over a 3-yr period (2012, 2013, 2014) to evaluate the tolerance of adzuki bean to pyroxasulfone (150 and 300 g a.i. ha−1), flumioxazin (71 and 142 g a.i. ha−1), sulfentrazone (420 and 840 g a.i. ha−1), fomesafen (240 and 480 g a.i. ha−1), imazethapyr (75 and 150 g a.i. ha−1), and cloransulam-methyl (35 and 70 g a.i. ha−1) applied pre-emergence. Pyroxasulfone, flumioxazin and sulfentrazone applied pre-emergence at the proposed 1× and 2× rates caused 25–96% injury and reduced plant stand up to 78%, shoot dry weight up to 95%, plant height up to 67% and seed yield up to 76% in adzuki bean. Cloransulam-methyl resulted in 1 to 9% injury with no adverse effect on plant stand, shoot dry weight, plant height, seed moisture content and seed yield of adzuki bean. Fomesafen and imazethapyr resulted in 1–3% injury with no adverse effect on plant stand, shoot dry weight, plant height, seed moisture content and seed yield of adzuki bean. Based on these results, pyroxasulfone, flumioxazin and sulfentrazone do not have an adequate margin of crop safety for weed management in adzuki bean. Cloransulam-methyl has potential for use in adzuki bean, especially at the lower rate. Imazethapyr and fomesafen at the rates evaluated can be used safely in adzuki bean production under Ontario environmental conditions.

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