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.

Yield increase and higher flesh firmness of 'Arctic Snow' nectarines both at harvest in Australia and after export to Taiwan following pre-harvest application of ReTain Plant Growth Regulator (aminoethoxyvinylglycine, AVG)

2004 ◽  
Vol 44 (3) ◽  
pp. 343 ◽  
Author(s):  
A. C. Rath ◽  
A. J. Prentice
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Fruit Size ◽  
Yield Increase ◽  
Flesh Firmness ◽  
Ambient Storage ◽  
Class 1 ◽  
Harvest Delay

The effects ReTain Plant Growth Regulator (830 g in 1000 L water/ha) applied to a commercial block of 'Arctic Snow' nectarines 7 days before the first harvest was assessed in relation to harvest delay, fruit size, fruit quality (flesh firmness and brix), as well as the quality of the fruit following export to Taiwan. The untreated block (0.87 ha) and the ReTain-treated block (1.0 ha) were harvested according to the orchard's standard maturation criteria of background colour, size and percent blush colour. Based on picking schedules, the maturation of the ReTain block was delayed by 2.75 days (P<0.05). The fruit continued to grow during this delay and resulted in a 12.3% increase in yield and an increase of 393 packed cartons/ha. There were more (P<0.001) cartons of ReTain-treated fruit packed in grade sizes 69–78 mm diameter and less of smaller size classes (51–66 mm) compared with untreated fruit. The increase in both the number of cartons of class 1 fruit and fruit size on the ReTain block resulted in a Return on Investment (ROI) of 14.7 : 1 with an additional net return of AU$17 655/ha over the untreated block. There was a correlation between fruit size and flesh firmness with larger fruit being firmer than smaller fruit (P<0.001), however, packed ReTain-treated fruit was 3.2 N firmer on average (P<0.001) than packed untreated fruit for all size grades and from all harvests and packs. Brix levels increased (P<0.001) with fruit size but there was no difference (P = 0.568) between ReTain-treated fruit and untreated fruit. Two containers of fruit (early and late picks) were exported to Taiwan. The containers held a temperature of 0.5–2.0°C for the 14–15 day transit time from Australia to Taiwan. ReTain-treated fruit in both containers was 1.7 N firmer (P = 0.022) than untreated fruit upon arrival in Taiwan. After ambient storage (23°C) of fruit from container 1 for 45 h, fruit firmness declined (P<0.001) from an average of 65.7 to 43.2 N and there was no difference (P = 0.826) between treated or untreated fruit. It is concluded that ReTain application to 'Arctic Snow' nectarines can increase financial returns to growers through increased fruit size and quality benefits as well as maintain a higher flesh firmness following export.

Prospects for Sunflower Cultivation in the Krasnodar Region with the Use of Plant Growth Regulator

Helia ◽  
2016 ◽  
Vol 39 (65) ◽  
Author(s):  
N.I. Nenko ◽  
N.N. Neshchadim ◽  
E.K. Yablonskay ◽  
K.E. Sonin
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Biomass Accumulation ◽  
Weather Conditions ◽  
Oleic Acid Content ◽  
Sunflower Seeds ◽  
Adverse Weather ◽  
Krasnodar Region

AbstractBased on the biological characteristics of sunflower, Krasnodar region is the most favorable area for high and stable yields of this crop in the Russian Federation. However, there is a manifestation of the drought in the summer time that adversely affects the productivity and quality of sunflower seeds. Increased resistance to adverse weather conditions is possible only on the basis of deep studying of the physiological features of formation of productivity and quality of seeds, which is a very urgent task The effect of plant growth regulator furolan on growth, productivity and the formation of physical and chemical indicators of quality of sunflower seeds of the P-453 varieties, the SEC and the RMS selection by VNIIMK were investigated. The treatment of vegetative plants by furolan has activated the growth and biomass accumulation in the stems, improved the photosynthetic activity of plants, leaf area increased, thereby increasing their life expectancy and productivity of photosynthesis. Increased plants productivity reduced their empty grain, increasing the geometric dimensions of the seeds and sunflower kernels, reduced seed husk content, oil content and increased oleic acid content in the oil.

Laxogenosides Enhance Yield and Quality of Raphanus sativus L. Under Greenhouse Condition

2021 ◽  
Vol 15 (4) ◽  
pp. 542-547
Author(s):  
Jinna Liu ◽  
Zihe Zha ◽  
Xiaoli Liu ◽  
Cunli Zhang
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Raphanus Sativus ◽  
Water Soluble ◽  
The Other ◽  
Application Time ◽  
Greenhouse Experiments ◽  
Yield And Quality

Laxogenoside-C (LG-C) has BRs-likely activity and with higher activity stability. In this study, the LG-C and SsS (the mixture of Laxogenoside-A, -B, and -C; isolated from the Smilax scobinicaulis C.H. Wright) were used to conduct the seeding treatment and greenhouse experiments with different application time and concentrations, to clarify the effect on yield and quality of radish (Raphanus sativus L.) for development of a new plant growth regulator. The results showed that 10 μM LG-C and SsS increased hypocotyls, elongation and cotyledon weight compared with other treatment. The greenhouse experiments indicated that the interaction effect of plant growth regulator types and application time was significant for all parameters except for phosphorus content. An application of LG-C or SsS produced a higher yield than multiple times. Compared with T0 treatment, LG-C and SsS sprayed at root enlargement (T4) increased yield by 25.33% and 24.10%, respectively. T4 treatment of LG-C produced the highest yield and free amino acid and phosphorus, but the other parameters not. T4 treatment of SsS not only had the highest yield and water-soluble carbohydrates and water-soluble protein but also improved the other radish quality. In conclusion, this study indicated that the application of SsS at root enlargement with 10 μM improved radish root tubers yield and quality.

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.

scholarly journals CHEMICALS FOR PASTURE RENOVATION AND IMPROVEMENT OF HERBAGE QUALITY

1985 ◽  
pp. 77-82
Author(s):  
W.F. Leonard ◽  
S.J. Bruce ◽  
A.J. Russell ◽  
M.R. Cook
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
White Clover ◽  
Plant Growth Regulator ◽  
Grass Species ◽  
Agrostis Capillaris ◽  
Breeding Performance ◽  
Subsequent Work ◽  
Pasture Grasses ◽  
Herbage Quality

Research into chemical pasture renovation was pioneered by NZ scientists in the 1960's but the technique was not widely adopted at that time. Subsequent work has confirmed that white clover (Jrifolium repens L.) is a poor competitor against browntop (Agrostis capillaris L.) for phosphate. This has implications regarding nitrogen fixation. Pasture renovation also provides an opportunity to introduce preferred pasture grasses, free of competition from resident grass species. White clover is now recognised as a high-quality feed for livestock. Work is reviewed showing the correlation between liveweight of ewe hoggets and subsequent breeding performance and that white cloverdominant pasture was superior i0 ryegrass-dominant pasture for flushing breeding ewes. In field-scale testing, the plant growth regulator mefluidide suppressed seedhead formation in pasture grasses and gave substantial, though regionally variable, liveweight gains in lambs, beef cattle and deer. In limited evaluation with dairy cows changes in pasture herbage have not been matched by improved milk or milkfat yield. Keywords: Chemical pasture renovation, fertiliser utilisation, pasture quality, chemical plant growth regulator

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.

Sign in / Sign up

Export Citation Format

Share Document