Bulbs planting

A selection of bulbs planted in a good-sized pot in early fall can provide a succession of flowers from late winter through to late spring. Choose bulbs that flower at different times and that are planted at different depths. Plant at least two or three of each cultivar. Once the bulbs are over, they can be replaced with colorful summer bedding that will flower all summer long, for the benefit of many predatory insects. 

Leaves with swollen spots plant fails to grow. Cause Bulb and stem nematodes. Tiny -oundworms feed on bulbs plants fail to grow n spring or fail to bloom. Swollen, yellow-green spots appear on leaves an infested bulb. 

Buy daffodils from a reputable source to ensure that you get healthy, pest-free bulbs. Look for double- or triple- nosed bulbs, so-named because of their multiple growing points that produce more flowers than singlenosed bulbs. Plant bulbs in fall, at least 1... 

Lubbe, A., R. Verpoorte, and Y. H. Choi, Effects of fungicides on galanthamine and metabolite profdes in Narcissus bulbs. Plant Physiol. Biochem., 2012. 58 p. 116-23. 

The first centralized electric generating plant in the United States was Edison s three-unit steam-engine-based station, which suppHed electric power to light approximately 5000 electric lamps in a group of homes and businesses in New York City in 1882. Also in 1882, the first hydroelectric power plant went into operation in Appleton, Wisconsin, generating approximately 25 kW of power, enough to power more than 200 100-watt light bulbs. 

Zwieback, m. biscuit, specif, rusk, zwieback. Zwiebel, /. wi, bulb, specif, onion, zwiebelartig, a. bulbous alliaceous, zwiebelfdrmig, a. bulbshaped, bulbar. Zwiebel-gewachs, n, bulbous plant, -linse, /. biconvex lens, -mannor, m. cipolin, -bl, n. onion oil. 

Separate reheat batteries may be placed in branch ducts where one plant supplies both a main area calling for cooling and an auxiliary room without heat load. Correct rh in the auxiliary rooms results (only) if it is correctly controlled in the main room and they require the same dry bulb temperature. While wasteful of energy, it simplifies the plant design and may be found to use fewer resources. 

Dry bulb sensors may be bi-metal strips, thermistors or refrigerant-filled phials or bellows responding to pressure differences caused by temperature change. These, in turn, provide an electrical or mechanical signal. The mechanical items are used to alter the value of potentiometers or make-or-break contacts. The signals are transmitted to amplifiers, which respond to the degree of error. An important feature is the proportional band of temperature over which the controls call for up to full plant capacity. 

Where it is available the source can be a separate boiler plant, but common practice is to employ purpose-made electrode boilers within or adjacent to the plant. The latter reduces sensible gains to the plant but, being essentially saturated steam, condensate return pipes are required. In addition to the rise in moisture content of the air (kg/kg) being dependent on airflow and steam-injection rates, there is a very small increase in dry bulb temperature by the cooling of the vapor to the air temperature. The rise in total heat is total heat of steam (kJ/kg) x quantity supplied per kg air. 

Observations of external wet bulb and dry bulb air temperatures or similar assessment of other forms of load may be combined with simple observations of what the plant is doing. If it were using its refrigeration capacity under cold no-load conditions then clearly something is wrong. A common fault is finding the plant calling for... 

Make no excuse for checking whether the sun shines on the thermostats or someone has washed the floor. Another common occurrence is that while the room is not being controlled as specified, the plant appears to be operating correctly. Here a series of simultaneous readings of air flows and wet and dry bulb temperatures should be taken around the whole of the air circuit - on and off coil, condition after fan, condition at inlet grilles, etc. Referring these to a psychrometric chart will usually indicate where the fault or leak lies. 

In most climates the wet bulb temperature is well below the dry bulb temperature and there is an advantage in using water or evaporative cooling for larger plant. These options need to be investigated and compared. The present concern over spray-borne diseases may indicate a preference for air cooling in the vicinity of institutions but correct maintenance of water cooling towers and evaporative condensers will permit their use elsewhere. Table 10.2, based on the tentative temperature differences of 15 K and 12 K... 

In order that hot condenser water may be re-used in a plant, it is normally cooled by contact with an air stream. The equipment usually takes the form of a tower in which the hot water is run in at the top and allowed to flow downwards over a packing against a countercurrent flow of air which enters at the bottom of the cooling tower. The design of such towers forms an important part of the present chapter, though at the outset it is necessary to consider basic definitions of the various quantities involved in humidification, in particular wet-bulb and adiabatic saturation temperatures, and the way in which humidity data are presented on charts and graphs. While the present discussion is devoted to the very important air-water system, which is in some ways unique, the same principles may be applied to other liquids and gases, and this topic is covered in a final section. 

Many large air-conditioning plants incorporate automatic control of the humidity and temperature of the issuing air. Temperature control is effected with the aid of a thermocouple or resistance thermometer, and humidity control by means of a thermocouple recording the difference between the wet- and dry-bulb temperatures. 

Calanthe vestita Lindl. is a terrestrial orchid that grows in Thailand, Burma, Cambodia, Laos, Vietnam, Malaysia, Sumatra, Java, Borneo, and Celebes. The leaves are 25x5 cm. The petiole is 5 cm long. The influorescence is 40 cm long. The flowers are white (Fig. 59). In Cambodia, Laos, and Vietnam, a paste of bulbs is applied to painful bones. The pharmacological properties of this plant are currently unknown. 

Experiment II. Volatile compounds from leaves and bulbs Volatiles (terpenoids, ethylene and other compounds) can be released from the leaves and other plant parts and consequently can affect the germination of seeds, growth and development of neighbouring plants in ecosystems. 

Material required Seedlings of each test plant species, plastic dishes (200 ml), glass tanks (35x35x25 cm), fresh A. ursinum leaves or A. ursinum bulbs (50 g). 

Materials required Test plant seeds, 5% sodium hypochlorite, distilled water, Petri dishes (10 cm dia), aqueous extracts of (i) leaves, (ii) bulbs, (iii) phenol-containing extracts of surface layer of soil (0-10 cm). 

Daylilies grow best in soil that is slighdy acidic, and they prefer either direct sunshine or light shade. The best time to plant them is in the early fall or early spring, but they are hardy enough to endure planting or transplanting at almost any time of year. They should be planted 18 to 24 inches apart, and the bulb should be no deeper than one inch below the soil s surface. 

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