influence of light, temperature and humidity on the herbicidal activity of bromoxynil (3,5-dibromo-4-hydroxybenzo-nitrile) on Amsinckia intermedia by Martin Zimmerman

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  • Herbicides -- Toxicology.

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Other titlesBromoxynil.
Statementby Martin Joseph Zimmerman.
The Physical Object
Pagination48 leaves, bound :
Number of Pages48
ID Numbers
Open LibraryOL14326872M

Download influence of light, temperature and humidity on the herbicidal activity of bromoxynil (3,5-dibromo-4-hydroxybenzo-nitrile) on Amsinckia intermedia

The data obtained from this experiment indicated that temperature had a major influence on the rate of bromoxynil activity. Light and humidity effects were less pronounced. At F, the higher light intensity increased the rate of herbicidal activity of bromoxynil. This effect diminished as the temperature was raised.

Resource Type: Masters ThesisAuthor: Martin Zimmerman. The effects of temperature, light and humidity on the herbicidal activity of bromoxynil on coast fiddleneck, Amsinckia intermedia, were studied.

Fiddleneck plants were treated approximately 16 days after seeding with one-halfand one ounce of bromoxynil and placed in growth chambers under and foot-candles of lightand with high and low humidities. Light\ud and humidity effects were less pronounced.

At F, the higher\ud light intensity increased the rate of herbicidal activity of bromoxynil.\ud This effect diminished as the temperature was raised. Influence of light, temperature and humidity on the translocation and activity of glyphosate in Elymus repens (=Agropyron repens) Article in Weed Research 23(6) - July with 36 Reads.

Germination percentages of H. ammodendron seeds were determined at constant 5°C, 10°C, 15°C, 20°C, 25°C or 30°C, in Petri dishes on filter paper, in light or darkness. Seeds were wetted on 17 April The seeds in darkness were first checked only when those in light at the optimal temperature had reached 80% germination after 6 days of by: comfort indices such as the temperature-humidity index (THI) integrate the effects of temperature and humidity and may offer a means to predict the effects of thermal conditions on performance.

The objective of this study was to determine live performance of heavy broilers over a range of dry-bulb temperature (15°C, 21°C, and 27°C) and.

Prolonged exposure to low moisture and humidity, and high temperatures reduces herbicide penetration by increasing the thickness of the leaf cuticle and closing stomata.

Late season application to invasive plants may also be less effective since mature leaves tend to have thicker cuticles that are more resistant to herbicide penetration. Temperature and Herbicide Application Questions Ideal temperatures for applying most POST herbicides are between 65 and 85 F.

Weeds may be killed slowly below 60 F. Some herbicides may injure crops if applied above 85 F. Avoid applying volatile herbicides such as 2,4-D ester, MCPA ester and dicamba during hot weather, especially near.

This article considers the influence of temperature and humidity control in industrial or plant bakeries and how this can impact on product quality. The stages of mixing, forming, proving, baking and cooling are considered.

Bread is most sensitive to changes in temperature and humidity and so this article discusses these effects on bread but. Introduction. Climatic changes are expected to influence aquatic photosynthetic organism growth conditions over the next century by modifying physicochemical parameters of the environment such as temperature, precipitation, and incident light characteristics (Finkel et al., ).Changes in water temperature, pH, UV-B in the upper water column (due to ozone depletion).

Potential for crop injury exists when glyphosate plus 2,4-D or dicamba mixtures are applied immediately before or after planting due to the PRE soil activity of 2,4-D and dicamba.

Glyphosate at the equivalent of pt/A of a 3 lb ae/gal concentrate is required to control fall. temperatures and light and 10 hours of low temperatures and darkness per day to mimic diurnal fluctuations of temperature and light (C.

Baskin and J. Baskin ). Rate of germination was calculated using a modified Timson’s index of germination velocity: Germination velocity=∑G/t where G is the percentage of seed germination at two day. Effects of Light, Temperature, Humidity on the Stability of Each Opened Tablet Formula.

Yoh Takekuma, Rika Takachi, Haruka Ishizaka, Yuki Sato, was demonstrated that opened Crestor ® tablets were stable for one year under the conditions of diffused light at room temperature and shielded light at room temperature.

(temperature, light-intensity) that can maximize genetic potential of modern heavy broilers, while reducing production costs. The objective of the present study was to evaluate the specific effects of ambient temperature, light intensity and their interaction on growth performance, processing yield and carcass quality f o modern heavy broiler.

However, the application ofliter bromoxynil /ha at the third-leaf and flowering stages on wheat significantly decreased the grain yield as well as the number of spikes per plant, main spike length, weight of grains and straw per plant. Herbicidal effects may be varied when they are applied in.

The objective of this study was to determine live performance of heavy broilers over a range of dry-bulb temperature (15°C, 21°C, and 27°C) and relative humidity (50%, 65%, and 80%), hence THI (°C to °C). A series of four studies were completed with broiler chickens housed in.

The initial grain temperature inside Godown storage was ℃ and at the end of the storage period, it was ℃. The initial grain temperature inside CAP storage was ℃ and it increased to ℃ at the end of the storage period. The relative humidity in the silo was % lower than the ambient relative humidity.

The. Environmental Factors that Affect Herbicide Activity Light Carbon Dioxide Temperature Relative Humidity Precipitation and Soil Moisture Wind 8. Impact of Climate Change Factors on the Efficacy of Herbicides with Different Chemistries Amino Acid Inhibitors Photosynthetic.

Control of relative humidity is an important part of temperature management, as the two combine to reduce water loss and protect produce quality.

The chapter includes some examples that will help you to detennine the costs and benefits associated with temperature and RH management technologies for hOIticultural produce, and help. Humidity levels fluctuate with change in air temperature and plants are constantly transpiring, which adds water vapor to the air.

In the northern climatic areas, these challenges are multiplied by many factors, of which the drier, outdoor air that is too cold to perform air exchanges. While temperature is an important factor, high humidity increases absorption of many herbicides compared to low humidity levels.

Herbicide applications in early evening when humidity and temperatures decline may help reduce injury potential compared to midday when these levels are higher.

Donaldson AI. The influence of relative humidity on the aerosol stability of different strains of foot-and-mouth disease virus suspended in saliva. J Gen Virol. Apr; 15 (1)– Donaldson AI. The influence of relative humidity on the stability of foot-and-mouth disease virus in. The influence of humidity and soil type on the degradation process of clomazone, metazachlor and pendimethalin immobilized in the alginate matrix were studied under laboratory conditions, and.

Influence of the length of the alkyl substituent (R) in the cation on the herbicidal activity of the synthesized ILs against common lambsquarters (CHEAL), cornflower (CENCY) and oilseed rape (BRSNN). The first visual evaluation (3 days after treatment, 3 DAT) showed that all tested ILs (1 – 14) preserve the biological activity of the anion.

Herbicide Mode of Action. To be effective, herbicides must 1) adequately contact plants; 2) be absorbedby plants; 3) move within the plants to the site of action, without being deactivated; and 4) reach toxic levels at the site of action.

The application method used, whether preplant incorporated, preemergence, or postemergence, determines whether the herbicide will contact germinating. moisture: dew point and relative humidity of air. Dew point is a characteristic of the water content of the large-scale air mass, whereas relative humidity depends on the local temperature and therefore on the local meteorological parameters.

When the temperature of a material is below the ambient dew point, water condenses on the. humidity control. Influence of storage, temperature, and light on germination of Japanese brome seed MARSHALL R.

HAFERKAMP, MICHAEL G. KARL, AND MICHAEL D. MACNEIL Authors are range scientist, postdoctoral range scientist, and research geneticist USDA-ARS, Fort Keogh Live- stock and Range Research Loboratory, Miles City, Mont.

May 4, Herbicide activity is influenced by light, temperature, humidity, soil moisture, wind and precipitation. Field conditions before, during and after herbicide application can influence coverage, absorption, and translocation in a plant. Temperature extremes can slow plant metabolism and reduce herbicide effectiveness.

KETHLEY TW, FINCHER EL, COWN WB. The effect of sampling method upon the apparent response of airborne bacteria to temperature and relative humidity. J Infect Dis. Jan-Feb; (1)– MONK GW, MCCAFFREY PA.

Effect of sorbed water on the death rate of washed Serratia marcescens. J Bacteriol. Jan; 73 (1)– Temperature, humidity and the amount of direct sunlight are the primary factors that determine an animal’s body temperature. However, other factors — such as precipitation, wind, amount of night cooling and exposure to fescue endophyte— are important.

The herbicide molecule may persist in a plant under cool air temperatures, but the herbicide may not move, may have herbicidal activity, or be metabolized until higher air temperatures occur. In summary, non-systemic herbicides are less influenced by cool air temperatures because they do not require translocation which is temperature dependent.

Storage Limitation Statements: Temperature— Herbicides1 Frederick M. Fishel2 1. This document is PI, one of a series of the Agronomy Department, UF/IFAS Extension.

Original publication date June Revised April and March Reviewed March The mode-of-action is the overall manner in which a herbicide affects a plant at the tissue or cellular level.

Herbicides with the same mode-of- action will have the same translocation (movement) pattern and produce similar injury symptoms. Selectivity on crops and weeds, behavior in the soil and. Temperature and humidity regime for peppers. Temperature and humidity go hand in hand.

Quite often increasing the one has an effect of the other. So keeping a good balance can be difficult. The ideal temperatures at which peppers grow are between 18°C at night and 30°C during the day.

The grower must make sure that temperatures do not rise. Cold weather treatments were applied on December Cloud cover was 5%, air temperature was 8 C (46 F), soil temperature was 4 C (39 F), relative humidity was 29%, wind speed was 13 kmhr −1 (8 MPH) (southwest).

At the time of treatment, ivyleaf speed-well was 8 cm (3 in) tall, common chickweed was 6 cm (2 in) tall, and henbit was 10 cm (4.

The most successful bakeries use climate control solutions that ensure quality, high yields and the distinctive characteristics that customers seek in their goods. For humidity treatments, herbicide applications were made under humidity ranging from ∼66% to 89% (high) or ∼35% to 44% relative humidity (low), with a day/night temperature of 36/25 C.

For the high-humidity treatment, a humidifier (Vicks ® Warm Mist, Procter & Gamble, Cincinnati, OH) was placed in the growth chamber and filled with tap. However, McCurdy et al. () working with perennial ryegrass did not observe a response to temperature.

Also, irradiance levels and relative humidity may influence mesotrione activity (Johnson and Young, ; McCurdy et al., ). Seed germination and seedling establishment is a critical stage in the life cycle.

Cynodon dactylon and Medicago sativa are two important species using in ecological restoration. Control experiments were employed to test the effects of temperature and humidity on the germination of the two pioneer species.

The experiment included three temperature treatment level (15, 20, 25 °C) and four. The herbicidal activity of the disclosed composition is greater than that of either of the individual active ingredients used alone.

One of the active ingredients is a fatty acid based composition selected from caprylic acid, pelargonic acid, capric acid, undecanoic acid, undecanoic acid, lauric acid, oleic acid, salts thereof and mixtures.penetration and effectiveness by remoistening herbicidal deposits.

A dry period of 4 to 8 days after 2,4-D appli-cation to wheat (Triticum sativum Lam.) has been re-ported to result in serious damage (48). HUMIDITY The relative humidity (RH) of the microclimate will affect herbicidal penetration, both physically and physio-logically.When herbicides are applied, surfactants may affect the wettability of plant leaves and the effectiveness of the herbicides.

A particular increase in action is achieved according to the invention by applying surfactants from the group of the CCalkylpolyglycol ether sulphates and their physiologically acceptable salts together with leaf-acting selective herbicides or the leaf-acting.

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