scholarly journals Effect of Indoleacetic Acid and Zinc Sulphate Application on Growth and Some Physiological Parameters of Cowpea (Vigna sinensis Savi) Plants

2019 ◽  
Vol 4 (1) ◽  
pp. 15-19
Author(s):  
Ikbal Muhammed Gharib Tahir ◽  
Sargul Ahmad Khudur ◽  
Arol Mohsen Anwar
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Zinc Sulphate ◽  
Indoleacetic Acid ◽  
Foliar Application ◽  
Vigna Sinensis ◽  
Total Carotenoids ◽  
Stomata Number

This study was conducted in Koya city, Iraq on cowpea (Vigna sinensis Savi) plants California black eye variety by factorial experiment including the effects of foliar spraying of Zinc Sulphate ZnSO4.7H2O (ZS) or the plant growth regulator Indoleacetic Acid C10H9NO2 (IAA). Analysis of data revealed that ZS and IAA application affects significantly on the studied traits. 100 ppm of IAA increased significantly the leaves content of each of chlorophylls a, b, and total, although it decreased the content of total carotenoids. The results showed that the leaf area significantly increased by increasing the amount of ZS to 2.0 g/L compare with other treatments except 1.0 g/L ZS application. Foliar application of IAA increased significantly the dry matter percent of shoots and roots as well as the number of nodules per plant. It has been found that leaves content of zinc is related to the concentration of ZS applied significantly compared to the control and IAA treatments, however, the application of IAA caused to decrease K and Zn contents in leaf of the plants compared to other treatments. Finally, based on the results the best ratio of IAA for increased stomata number on the abaxial and adaxial leaves surfaces was 75 ppm.

A MODEL SYSTEM FOR THE STUDY OF 2,4-D TRANSLOCATION IN LEAFY SPURGE

1985 ◽  
Vol 65 (2) ◽  
pp. 369-377 ◽  
Author(s):  
SARAH E. LINGLE ◽  
JEFFREY C. SUTTLE
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Nutrient Medium ◽  
Plant Growth Regulator ◽  
Root Zone ◽  
Foliar Application ◽  
Leafy Spurge ◽  
Model System ◽  
Euphorbia Esula ◽  
Axillary Shoots

A model system was devised to study the translocation of 2,4-D in leafy spurge (Euphorbia esula L.). The effects of rate of 2,4-D application, decapitation, and rate and pretreatment with ethephon on 14C-2,4-D translocation were studied. Rooted cuttings were obtained by rooting newly-developed axillary shoots in moist vermiculite for 4 wk. These cuttings were then placed in liquid nutrient medium for translocation experiments. Seven days after application, 50–60% of the 14C translocated from 14C-2,4-D treated leaves was found in the stem. The percentage of 14C that accumulated in the stem increased with increasing rate of 2,4-D application to 1 kg/ha. Up to 85% of 14C translocated to the root was released into the nutrient medium. Shoot decapitation 5 mm below the apex up to 4 days before 2,4-D application decreased 14C percentage in leaf tissue and increased 14C in stem and root. Foliar application of ethephon at 1 kg/ha resulted in a transient increase in the rate of ethylene evolution from shoot and root tissues, decreased the amount of 14C translocated to the root zone and increased the 14C in the leaves. Ethephon treatment of larger, vermiculite-grown plants also decreased 14C accumulation in the roots. These results indicate that the use of root cuttings is a convenient and reliable method for the study of herbicide translocation and plant growth regulator/herbicide interactions in leafy spurge.Key words: Translocation, 2,4-D, leafy spurge, Euphorbia esula L., plant growth regulator, ethephon

scholarly journals Use of Prohexadione Calcium on Grass Species Development

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
J.R.G. QUEIROZ ◽  
A.C. SILVA JR. ◽  
D. MARTINS
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Experimental Period ◽  
Grass Species ◽  
Randomized Design ◽  
Grass Root ◽  
Prohexadione Calcium

ABSTRACT: This study has aimed to evaluate the effect of prohexadione-calcium as a plant growth regulator on growth and quality of Japanese lawn grass, Broadleaf carpet grass and Bermudagrass. The treatments and doses of the prohexadione-calcium tested with two three reapplications were 27.5, 55.0, 110.0, 165.0 and 165.0 g a.i. ha-1, and a control without application of a growth regulator. Visual injury evaluations were performed using a scale of scores and plant height and chipping dry matter were determined. We have evaluated the total thickness of the sod grass, root length and dry matter of this material at the end of the experimental period. The study was arranged in a completely randomized design with four replications. The results were submitted to analysis of variance by F-test and the averages of the treatments were compared by t test at 5% probability. The prohexadione-calcium plant growth regulator was visually selective and reduced shoot growth of the three species of grass and can thus be used in the management of lawns in gardens and sports areas. As for the production of sod grass, the prohexadione-calcium can be recommended for Japanese lawn grass and Broadleaf sod grass, especially doses 165.0+165.0 and 55.0+55.0+55.0 respectively, because they have provided a better quality sod grass. For Bermudagrass, the effect of the treatments was harmful for the quality of sod grass and is not recommended for production purposes.

scholarly journals Rainfall intensity and Mepiquat Chloride persistence in cotton

2007 ◽  
Vol 64 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Fábio Suano de Souza ◽  
Ciro Antonio Rosolem
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Rainfall Intensity ◽  
Mepiquat Chloride ◽  
Reproductive Structures ◽  
Cotton Plants ◽  
Dry Matter Weight

In some regions where cotton is grown in Brazil rainfall amounts to about 2,000 mm per year, which imposes a great risk for Mepiquat Chloride (MP) to be washed from cotton leaves before being absorbed. The objective of this research was to evaluate the MC persistence when applied on cotton plants submitted to different rain intensities after spraying. The treatments were three MC rates: 0, 15.0 and 30.0 g a.i. ha-1 and four simulated rainfalls, applied 90 minutes after MC spraying: 5, 10, 20 and 40 mm, plus a treatment without rain. Cotton plants of the cv. Delta Opal were grown in 12 L pots filled with an Haplortox. The experimental design was consisted of complete randomized blocks, in a factorial scheme, with four replicates. The evaluated parameters were: plant height, number of reproductive branches, dry matter weight, reproductive structures, retention and leaf area. The higher the rainfall the lower the effectiveness of the plant growth regulator in controlling plant height. A simulated rainfall as low as 5 mm occurring 90 minutes after MC application was enough to wash some of the plant growth regulator from cotton leaves.

ChemInform Abstract: Synthesis of α-Trifluoromethylated Indoleacetic Acid (V): A Potential Peroxidase-Stable Plant Growth Regulator.

ChemInform ◽  
2010 ◽  
Vol 31 (1) ◽  
pp. no-no
Author(s):  
Katsuya Kato ◽  
Shozo Fujii ◽  
Yue-Fa Gong ◽  
Satoko Tanaka ◽  
Masato Katayama ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Indoleacetic Acid

Synthesis of α-trifluoromethylated indoleacetic acid: a potential peroxidase-stable plant growth regulator

1999 ◽  
Vol 99 (1) ◽  
pp. 5-7 ◽  
Author(s):  
Katsuya Kato ◽  
Shozo Fujii ◽  
Yue-Fa Gong ◽  
Satoko Tanaka ◽  
Masato Katayama ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Indoleacetic Acid

scholarly journals Plant Growth Regulator-Brassinolide for Mitigating Field Waterlogging Stress on Maize

2019 ◽  
pp. 1-14
Author(s):  
Victoria Otie ◽  
AN Ping ◽  
Ali Ibrahim ◽  
Egrinya Eneji
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Radiation Absorption ◽  
Waterlogging Stress ◽  
Maize Varieties ◽  
Maize Plants

Aim: To assess the pleiotropic role of a plant growth regulator, commercially identified as brassinolide (BR) in mitigating waterlogging stress imposed on maize. Study Design: A factorial combination of two maize varieties [Ikom White (IKW) and Oba-98], two BR levels (0 and 250 ml) and two waterlogging stages of maize growth [control (WL0) and seedling stage (WL1)], arranged as a split-split plot in a randomized complete block design with three replications was used. Place and Duration of Study: Akpabuyo Local Government Area, Cross River State-Nigeria. A two-year field experiment was conducted during the dry seasons of December 2016 and December 2017. Methodology: Waterlogging test was conducted on plots by demarcating them with 3.6 by 1.7 m metal sheets buried to a depth of 60 cm to prevent lateral soil-water movement. Two maize seeds were sown at 25 cm within and 75 cm between rows. The BR (250 ml) was sprayed foliar at 21 DAS. The non-waterlogging plots served as control. Observations were made on growth and yield variables as well as the plant's physiological traits. Results: Waterlogging significantly reduced the growth attributes of maize and increased (p≤0.05) the leaf moisture content. The photosynthetically active radiation on maize plants was substantially reduced (p≤0.05) by the waterlogging stress. Dry matter yield (DMY) and nutrient uptake in the leaves, stems and grains were reduced (p≤0.05) at both silking and at harvest. The effect of the BR was greater in Oba-98 with higher nutrient contents, radiation absorption, dry matter and grain yields than IKW. Conclusion: Treatment of maize plants with BR could induce some tolerance of field waterlogging. Thus, for optimum efficiency in maize production under stressed soil condition of waterlogging, it is recommended that the foliar spray of BR at the 250 ml per plant rate be considered.

scholarly journals Nitrogen supply associated with the application of trinexapac-ethyl in upland rice irrigated by sprinkler

2019 ◽  
Vol 40 (5Supl1) ◽  
pp. 2137
Author(s):  
Igor Balbi Guirão Peron ◽  
José Roberto Portugal ◽  
Orivaldo Arf ◽  
Ricardo Antônio Ferreira Rodrigues ◽  
Douglas de Castilho Gitti
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Foliar Application ◽  
Upland Rice ◽  
Sprinkler System ◽  
Nitrogen Supply ◽  
Differentiation Stage ◽  
Milling Yield

The lodging of rice plants significantly increases the losses of this crop. Lodging is caused by the inadequate management of water and fertilizers, particularly nitrogenous fertilizers. The use of growth regulators causes a reduction in plant height and consequently lodging, and may reduce harvest losses. The objective of this study was to evaluate nitrogen (N) doses with and without application of plant growth regulator in upland rice irrigated by a sprinkler system. The experimental design consisted of randomized blocks arranged in a 4 × 2 factorial design with four replicates. The treatments consisted of four N doses (0, 40, 80, and 120 kg ha-1) combined with the presence or absence of foliar application of a plant growth regulator. The application of 150 g ha-1 of trinexapac-ethyl at the flower differentiation stage reduced plant height and lodging. In addition, this treatment promoted increased 100-grain mass. The use of N doses in topdressing increased plant heights and grain yield. The plant growth regulator did not interfere with the milling yield of upland rice. Nitrogen fertilization in the topdressing did not interfere with the milling yield of upland rice irrigated by a sprinkler system.

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