scholarly journals EFFECTS OF AMITROLE, ZYTRON AND OTHER HERBICIDES OR PLANT GROWTH REGULATORS ON THE PEA APHID, ACYRTHOSIPHON PISUM (HARRIS), CAGED ON BROAD BEAN, VICIA FABA L.

1961 ◽  
Vol 41 (2) ◽  
pp. 413-417 ◽  
Author(s):  
A. G. Robinson
Keyword(s):  
Plant Growth ◽  
Vicia Faba ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Active Ingredient ◽  
Acyrthosiphon Pisum ◽  
Broad Bean ◽  
Pea Aphid ◽  
Toxic Effects ◽  
Vicia Faba L

Thirty herbicides or plant growth regulators were tested against the pea aphid, Acyrthosiphon pisum (Harris), on broad bean, Vicia faba L. When amitrole at 300, 200 and 100 p.p.m. of active ingredient in water was absorbed by the roots, fecundity of the adults was reduced and mortality of their progeny was 100, 100 and 93.9 per cent respectively. No significant effects on fecundity occurred when amitrole was applied to the leaves or as a contact spray on adult aphids. When Zytron at 3,000, 2,000 and 1,000 p.p.m. of active ingredient in water was absorbed by the roots, mortality of adults was 100, 100 and 95 per cent and of their progeny 100, 100 and 98.6 per cent respectively. When Zytron was applied to the leaves at 8,000, 4,000 and 2,000 p.p.m. of active ingredient in water there was a mortality of adults of 85, 70 and 50 per cent and of nymphs 75.1, 45.4 and 29.9 per cent. The lower mortality of nymphs occurred over a 5-day period, indicating that the initial toxic effects from application to the leaves were soon lost. Mortality of nymphs refers to young aphids born alive and killed by the toxic effects of amitrole or Zytron. Twenty-seven of the chemicals showed no effects on aphids caged on treated plants.

Note on Fecundity of the Pea Aphid, Acyrthosiphon pisum (Harris), Caged on Plants of Broad Bean, Vicia faba L., Treated with Various Plant Growth Regulators

1959 ◽  
Vol 91 (8) ◽  
pp. 527-528 ◽  
Author(s):  
A. G. Robinson
Keyword(s):  
Plant Growth ◽  
Vicia Faba ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Acyrthosiphon Pisum ◽  
Broad Bean ◽  
Pea Aphid ◽  
Pea Aphids ◽  
Vicia Faba L ◽  
Insect Populations

The effect on insect populations of the widespread use of plant growth regulators and herbicides is a neglected field. Fox (1948) reported on a relationship between the use of 2,4-D and wireworm damage to wheat. Putnam (1949) suggested that 2,4-D could be an environmental factor in the ecology of grasshoppers. A recent report (Maxwell and Harwood, 1958) indicates that even slight dosages of 2,4-D increase the rate of reproduction of pea aphids on broad beans. This note is a preliminary report on similar investigations with the pea aphid, Acyrthosiphon pisum (Harris), and broad bean, Vicia faba L.

Protein Mobilization and Proteolytic Enzyme Activities during Seed Germination of Broad Bean (Vicia faba L.)

2006 ◽  
Vol 61 (3-4) ◽  
pp. 222-226 ◽  
Author(s):  
Serap Kırmızı ◽  
Gürcan Güleryüz
Keyword(s):  
Plant Growth ◽  
Vicia Faba ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Embryonic Axis ◽  
Total Soluble Protein ◽  
Aminopeptidase Activity ◽  
Endopeptidase Activity ◽  
Protein Mobilization ◽  
Vicia Faba L

The protein mobilization from attached and detached seeds of Vicia faba L. cv. Eresen 87 (Fabaceae) was investigated. While the total soluble protein content decreased, the free amino acid content increased during the 7 days germination period. Among the three proteolytic enzymes, only endopeptidase activity was found to be affected by the removal of the embryonic axis. Leucine aminopeptidase activity was high at the beginning, then it decreased; carboxypeptidase activity reached the highest value at day 5. In order to examine the effects of plant growth regulators on detached cotyledons incubated with plant growth regulators [10−4 ᴍ benzyladenine (BA), gibberellic acid (GA3), indole acetic acid (IAA) and 10−5 ᴍ abscisic acid (ABA)], only benzyladenine was found promotive on protein mobilization. Our results suggest that the removal of the embryonic axis in seeds of Vicia faba L. cv. Eresen 87 decreases protein mobilization and endopeptidase activity.

Effect of Maleic Hydrazide and Other Plant Growth Regulators on the Pea Aphid, Acyrthosiphon pisum (Harris), Caged on Broad Bean, Vicia faba L

1960 ◽  
Vol 92 (7) ◽  
pp. 494-499 ◽  
Author(s):  
A. G. Robinson
Keyword(s):  
Plant Growth ◽  
Vicia Faba ◽  
Acyrthosiphon Pisum ◽  
Maleic Hydrazide ◽  
Broad Bean ◽  
Pea Aphid ◽  
Dichlorophenoxyacetic Acid ◽  
Root Absorption ◽  
Chlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid

In a preliminary report (Robinson, 1959) it was shown that the plant growth regulator maleic hydrazide (MH) caused both nymphal mortality and reduced fecundity to the pea aphid, Acyrthosiphon pisum (Harris), caged on treated broad bean, Vicia faba L. It was also stated that 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), and 2-methyl-4-chlorophenoxyacetic acid (MCPA), applied by root absorption to broad bean had no effect on adult or nymphal mortality, or fecundity of adult A. pisum, at the rates used.

scholarly journals Effect of Selected Plant Growth Regulators on Yield and Stem Height of Spring Wheat in Ontario

2017 ◽  
Vol 9 (12) ◽  
pp. 30 ◽  
Author(s):  
Yuxue Zhang ◽  
Shengnan Su ◽  
Mirko Tabori ◽  
Junjie Yu ◽  
Denise Chabot ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Spring Wheat ◽  
Active Ingredient ◽  
Growth Yield ◽  
Limiting Factor ◽  
Stem Height ◽  
Stem Strength ◽  
Set Up

Lodging is an important limiting factor in wheat because it affects growth, yield and grain quality. Plant growth regulators (PGRs) are often used to restrain elongation of internodes, improve lodging traits, and protect yield potentials. An experiment was set up in the greenhouse at the Ottawa Research and Development Centre (ORDC) to study the effect of the selected PGRs (Manipulator, the active ingredient of which is chlormequat; and Palisade, the active ingredient of which is trinexapac-ethyl) on yield, stem height and morphological traits in six spring wheat cultivars (AC Carberry, AAC Scotia, Hoffman, Fuzion, FL62R1, and AW725). Both PGRs reduced plant height and caused a 6% to 48% reduction in the length of the second basal internode. The mixture of the two PGRs had a synergistic affect and made the stem shorter. The application of PGRs significantly reduced lodging, increased stem diameter, thickness, filling degree, and stem strength, and increased leaf relative chlorophyll content. However, application of PGRs significantly reduced grain yield, and the combination of the two PGRs (Manipulator and Palisade) had a synergistic effect and lowered the yield. In general, the effect of Palisade was more evident than that of Manipulator.

FABA BEAN: LOW RESISTANCE TO PEA APHIDS, ACYRTHOSIPHON PISUM (HOMOPTERA: APHIDIDAE), IN ELEVEN CULTIVARS

1976 ◽  
Vol 56 (3) ◽  
pp. 451-453 ◽  
Author(s):  
B. D. FRAZER ◽  
D. RAWORTH ◽  
T. GOSSARD
Keyword(s):  
Vicia Faba ◽  
Faba Bean ◽  
Acyrthosiphon Pisum ◽  
Broad Bean ◽  
Developmental Rate ◽  
Low Resistance ◽  
Pea Aphids ◽  
Vicia Faba L ◽  
Faba Beans

Eleven cultivars of faba beans and one of broad bean (Vicia faba L.) were bioassayed for resistance to pea aphids (Acyrthosiphon pisum (Harris)) by determining the fecundity, survival and developmental rate of the aphid on each cultivar. None of the cultivars tested, including the three licensed for production in Canada, possess any significant resistance, although they differ in susceptibility.

scholarly journals Maximizing Performance of Plant Growth Regulators by Improving Spray Application

2005 ◽  
Vol 15 (2) ◽  
pp. 222-231 ◽  
Author(s):  
Martin J. Bukovac
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Active Ingredient ◽  
Plant Tissue ◽  
Spray Application ◽  
Application Process ◽  
Component Processes ◽  
The Individual

The importance of spray application and the role of spray additives are reviewed in reference to increasing the effectiveness of plant growth regulators (PGR). The spray application process is composed of a number of interrelated components, from formulation of the active ingredient into a sprayable, bioactive solution (emulsion/suspension), to atomization, delivery, retention, and penetration into the plant tissue. Each of these events is critical to performance of the PGR. Also, each can be affected by spray additives, particularly adjuvants, which may be incorporated in the formulation of the active ingredient or added to the spray mixture. The role of the individual components and effects of spray adjuvants, particularly surfactants and fertilizer adjuvants, on the component processes are discussed.

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