Growth Regulator and Herbicide Residues, Extension of the Residue Methods for 1,2-Dihydro-3,6-pyridazinedione (Maleic Hydrazide) and N-1-Naphthylphthalamic Acid (Alanap)

1958 ◽  
Vol 6 (9) ◽  
pp. 671-674 ◽  
Author(s):  
J. R. Lane ◽  
D. K. Gullstrom ◽  
J. E. Newell
Keyword(s):  
Growth Regulator ◽  
Maleic Hydrazide ◽  
Herbicide Residues ◽  
Naphthylphthalamic Acid

Influence of GA and SADH on Naptalam Uptake by Wheat and Soybean Seedlings

Weed Science ◽  
1977 ◽  
Vol 25 (2) ◽  
pp. 142-144
Author(s):  
Robert M. Devlin ◽  
Stanislaw J. Karczmarczyk
Keyword(s):  
Glycine Max ◽  
Gibberellic Acid ◽  
Succinic Acid ◽  
Growth Regulator ◽  
Wheat Seedlings ◽  
Triticum Vulgare ◽  
Soybean Seedlings ◽  
Naphthylphthalamic Acid

The uptake of naptalam (N-1-naphthylphthalamic acid) by wheat (Triticum vulgareL. ‘Mericopa’) and soybean (Glycine max(L.) Merr. ‘York’) was enhanced when the herbicide was applied simultaneously with SADH (succinic acid-2,2-dimethylhydrazide). Both root and shoot systems of growth regulator-treated plants exhibited enhanced herbicide uptake. Naptalam uptake by wheat seedlings was also stimulated by GA (gibberellic acid), but the GA influence in this respect was less dramatic than that of SADH. The uptake of the herbicide by soybean was not influenced by GA.

scholarly journals A quantitative study of cotyledon positioning in conifer development

Botany ◽  
2016 ◽  
Vol 94 (11) ◽  
pp. 1063-1074 ◽  
Author(s):  
David M. Holloway ◽  
Byron Brook ◽  
JooHyun Kang ◽  
Cameron Wong ◽  
Michael Wu
Keyword(s):  
Pseudotsuga Menziesii ◽  
Quantitative Study ◽  
Growth Regulator ◽  
Auxin Transport ◽  
Picea Sitchensis ◽  
Common Mechanism ◽  
Developmental Patterns ◽  
Second Stage ◽  
Spacing Distance ◽  
Naphthylphthalamic Acid

The number of cotyledons in angiosperm monocots and dicots is tightly constrained. But in the gymnosperm Pinaceae (pine family), which includes many of the conifers, cotyledon number (nc) can vary widely, commonly from 2 to 12. Conifer cotyledons form in whorled rings on a domed embryo geometry. We measured the diameter of embryos and counted the cotyledons to determine the radial positioning of the whorl and the circumferential spacing between cotyledons. Results were similar between Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), Sitka spruce (Picea sitchensis (L.) H.Karst.), and larch (Larix × leptoeuropaea, synonymous with L. × marschlinsii Coaz), indicating a common mechanism for cotyledon positioning in conifers. Disrupting transport of the growth regulator auxin (with 1-N-naphthylphthalamic acid (NPA)) led to cup-shaped embryos, indicating that whorl (ring) formation is separable from cotyledon patterning within the ring. NPA inhibits cotyledon outgrowth, but not the spacing (distance) between cotyledons. The NPA effect is direct; it does not operate indirectly on embryo size. These results support a hierarchical model for cotyledon positioning in conifers, in which a first stage (not requiring auxin transport) sets the whorl position, constraining the second stage (which requires auxin transport) to form cotyledons within this whorl. Similarly, recent studies in Arabidopsis have shown that different components of complex developmental patterns can have different transport properties; this aspect of patterning may be shared across plants.

The control of sucker growth in tobacco by growth substances and mineral oils.

1953 ◽  
Vol 4 (4) ◽  
pp. 390
Author(s):  
J Calvert
Keyword(s):  
Growth Regulator ◽  
Indoleacetic Acid ◽  
Maleic Hydrazide ◽  
Growth Substances ◽  
Mineral Oils ◽  
Highly Effective

Indoleacetic acid ranging in concentration from 50 to 10,000 p.p.m. significantly reduced the growth of suckers on plants which had had the apical leaves and inflorescence excised. Five mineral oils significantly reduced the suckering in tobacco grown in the glass-house. Twelve mineral oils tested in north Queensland under conditions similar to commercial growing were all highly effective in reducing sucker growth. As the concentration of indoleacetic acid increased, the epinastic effect on the leaves became more pronounced. The mineral oils did not produce epinasty. No pathological reactions were observed with any of the treatments. Maleic hydrazide was the only growth regulator used in the field that significantly reduced sucker growth.

Plant metabolic studies of the growth regulator maleic hydrazide

1995 ◽  
Vol 43 (10) ◽  
pp. 2713-2715 ◽  
Author(s):  
Dieter Komossa ◽  
Heinrich Jr. Sandermann
Keyword(s):  
Growth Regulator ◽  
Maleic Hydrazide ◽  
Metabolic Studies

scholarly journals Metabolic Studies of the Growth Regulator, Maleic Hydrazide

1997 ◽  
Vol 17 (3) ◽  
pp. 67-74
Author(s):  
M Haas ◽  
P Schröder ◽  
D Komoßa ◽  
H Sandermann ◽  
RG May
Keyword(s):  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Maleic Hydrazide ◽  
Cell Suspension Cultures ◽  
White Rot ◽  
White Rot Fungus ◽  
Low Degree ◽  
First Time ◽  
Acid Labile

AbstractThe metabolism of the plant growth regulator maleic hydrazide (MH) has been studied in sterile cell suspension cultures of tobacco, soybean, maize and wheat under standardized conditions. Maleic hydrazide was converted to itsO-b-D-glucoside in yields between 9.0 % (tobacco) 15.0 % (soybean), 5.1 % (maize) and 2.2 % (wheat) respectively. This glucoside was completely cleaved under simulated conditions (pH 1, 37°C, 24 h) of a ruminant stomach. From these results it is concluded that MH-O-b-D-glucoside (MHG) belongs to a small group of acid-labile pesticide conjugates (11). The participation of a glucosyltransferase (GT) (EC 2.4.1-) in this conjugation reaction of MH was demonstrated in vitro for the first time. In addition, up to 18 % of the applied maleic hydrazide became associated with nonextractable residues (NER) in soybean, whereas in tobacco only 0.2 % could be detected in this fraction. The residue from soybean cells was solubilized only to a low degree (about 3 %) under simulated stomach conditions, but up to 20 % by the white rot fungusPhanerochaetechrysosporium.

scholarly journals Nitrogen Fertilizer and Growth Regulator Impacts on Tuber Deformity, Rot, and Yield for Russet Potatoes

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Mark S. Reiter ◽  
Steven L. Rideout ◽  
Joshua H. Freeman
Keyword(s):  
Growth Regulator ◽  
Maleic Hydrazide ◽  
Sandy Loam ◽  
Total Yield ◽  
Soft Rot ◽  
Atlantic Region ◽  
N Application ◽  
Application Timing ◽  
Current Production ◽  
Production Practices

Potatoes (Solanum tuberosum) are an important high-value commodity for producers in the Mid-Atlantic Region. Current production recommendations were based on white potatoes, and practices for Russet potatoes have not been researched in this region. The objective of this study was to test impacts of N rate (0, 67, 134, 201, and 268 kg N ha−1), N application timing (100% applied with planter, 2-way split (30% with planter and 70% band applied approximately 30 days after planting at dragoff), and three-way split (30% with planter, 50% band applied prior to drag-off, and 20% band applied at first sight of bloom)), and additions of the growth regulator maleic hydrazide (MH-30). We tested “Goldrush” and “Norkotah” Russet potato varieties on marketability, total yield, tuber deformity, and tuber soft rot incidence for sandy loam soils in the Mid-Atlantic. Overall, year variations were significant with substantial rots (up to 86.5%) occurring in year 3. Maleic hydrazide and N application timing had little consistent effect on any tested parameter. Nitrogen rate and variety factors had the greatest impacts on deformity, tuber rots, and yields for Russet potatoes in the Mid-Atlantic Region with 134 kg N ha−1producing the highest total yields in 2009 and 2010. If tuber rots can be controlled, both “Goldrush” and “Norkotah” are acceptable varieties under the Mid-Atlantic production practices.

Antagonistic Responses with Combinations of Carbamate and Growth Regulator Herbicides

Weed Science ◽  
1969 ◽  
Vol 17 (3) ◽  
pp. 307-309 ◽  
Author(s):  
G. N. Prendeville ◽  
C. S. James ◽  
G. F. Warren ◽  
M. M. Schreiber
Keyword(s):  
Acetic Acid ◽  
Growth Regulator ◽  
Sorghum Vulgare ◽  
Giant Foxtail ◽  
Setaria Faberii ◽  
Anisic Acid ◽  
Naphthylphthalamic Acid ◽  
Dichlorophenoxy Acetic Acid

Antagonistic responses were noted on sorghum (Sorghum vulgarepers.) and giant foxtail (Setaria faberiiHerrm.) using preemergence combinations of (2,4-dichlorophenoxy)acetic acid (2,4-D) and the carbamatesS-ethyl dipropylthiocarbamate (EPTC), isopropylm-chlorocarbanilate (chlorpropham), and 2-chloroallyl diethyldithiocarbamate (CDEC). Combinations of EPTC and (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T) or 3,6-dichloro-o-anisic acid (dicamba) gave similar results. Effects of these combinations were mainly additive on four dicotyledonous species. Combinations of 2,4-D andN-1-naphthylphthalamic acid (naptalam) also were antagonistic on sorghum and giant foxtail but were additive on the remaining species. Eight other herbicide combinations were mainly additive on all six species.

Controlled pyrolysis of maleic hydrazide

1977 ◽  
Vol 27 (5) ◽  
pp. 611-617
Author(s):  
Walter T. Smith ◽  
Charles F. Mayer ◽  
Chyung S. Kook ◽  
John M. Patterson
Keyword(s):  
Maleic Hydrazide
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