Pulling plant

Rogue and prune. Pull plants with symptoms of disease or heavy insect infestation and prune diseased sections from perennial plants. A hot compost pile will kill pathogenic fungi and bacteria. If you suspect viral infections, bury the prunings in an out-of-the-... 

Harvesting ndPretrea.tment. At optimum maturity, the plants are pulled or mowed by hand or machine and, if necessary, threshed to remove seeds. The plants are spread out iu a field to dry. 

Once the plant is ready, the cotton is mechanically harvested with either a spindle picker or cotton stripper. The spindle picker selectively harvests seed cotton from open boUs. The unopened boUs are left on the plant and can be picked at a later date. The spindle picker uses a rotating tapered barbed spindle to remove the cotton from the bur (seed case). The seed cotton is wrapped around the spindle, pulled from the bur, removed from the spindle with a mbber doffer, and then transferred to a basket. 

Personnel Hazards The following case history illustrates how vacuum can be harmful and dangerous to personnel. A plant superintendent was checkiug an open nozzle on a glass-lined reactor on which there was a vacuum pump pulling vacuum, when suddenly his arm was sucked into the nozzle, up to his shoulder. He could not remove his arm until help arrived to release the vacuum on the vessel. He was injured painfully, though not seriously. The injury could have been veiy serious if help had not been nearby. Personnel hazards can also result from vacuum conveyor systems for solids handling. 

Unit checkout Check that required mechanical work has been completed, tags and blinds pulled, and temporary piping disconnected. Plant supervision must certify completion of work. Cancel all entry and work permits. Utility system has been commissioned. Check blind list and inspect lines close bleed, drain and sample valves. 

A joint on an 8-in. line containing a hot solvent had to be remade. The two sides v ere 14-in. out of line. There was a crane in the plant at the time, so it was decided to use it to lift one of the lines slightly. The lifting strap pulled against a 14-in. branch and broke it off (Figure 1-11). 

If a plant has been shut down long enough for all pressures to equalize and is then restarted, the suction pressure will pull down below normal until the liquid refrigerant has begun to circulate. Under such circumstances the low-pressure switch may operate. This is a normal occurrence, but may require the addition of a delay timer to prevent frequent starting of the compressor motor. 

The most recent major expln in a US TNT plant occurred in May 1974 at the Radford Army Ammunition Plant. The accident completely destroyed one of the three continuous nitration lines at the plant. According to the AMC News, Sept 1974, the investigation board reported that an operator inadvertently introduced a 5 to 6-foot rubber hose to clean out unwanted material that had collected in a transfer line leading to the nitrator, when the hose was pulled from his hands into the nitrator. This resulted in a rapid temp rise and subsequent explosion. The hose was commonly used in this manner . The material causing the blockage in the transfer line was believed to be an oxidation product of TNT, 2,2 -dicarboxy-3,3, 5,5,-tetra-nitroazoxybenzene, also referred to as White Compound. The introduction of the rubber hose caused a rapid, exothermic oxidation reaction between the hose material and the mixed acid present. The heat generated by this reaction caused a local acceleration of the normal nitration/oxidation reactions which occur in the nitrator until a critical temp was reached, at which point rapid oxidation of DNT/TNT proceeded as a runaway reaction, igniting the material present in the vessel. 

Despite their flaws, batch processes have stood the test of time for a number of reasons, the most important of which is the flexibihty it brings to the manufacturer in terms of the range of products that the plant can produce, the feedstocks used to produce them, and the speed at which they can be brought to market with very limited information on physical properties, reaction kinetics, and so on (very few, if any, Michelin-starred chefs have ever measured the rheology or kinetics of their latest culinary creation). This flexibility, however, has a price which comes in the form of lower efficiencies in terms of production, energy, labor, and so on, and ultimately efficiency equates to cost However, one should never underestimate the pull of flexibility particularly, as discussed earlier in the examples of fermentation, where control of important parameters is difficult to achieve. 

Figure 1.35 Current state of scientific and market implementation of micro reactors and optimistic future scenario. Micro reactors are today a device market and are technology driven (top). The future scenario is under market pull and will ask for more plant/total-system solutions (bottom).

It is not enough to say we do not want Communism in our economy. If we continue on our old political course., then we shall perish.. . . It is the noblest task of the leader to find ideals that are stronger than the factors that pull the people together. I recognized even while in the hospital that one had to search for new ideals conducive to reconstruction. 1 found them in nationalism, in the value of personality, and in the denial of reconciliation between nations.. .. If one rejects pacifism, one must put a new idea in its place immediately. . .. We must not forget that all the benefits of culture must be introduced more or less with an iron fist just as one time the farmer was forced to plant tomatoes.. .. ... 

Conklin AE, Erich MS, liebman M, Lambert D, Gallandt ER, Halteman WA (2002) Effects of red clover (Trifolium pratense) green manure and compost soil amendments on wild mustard (Brassica kaber) growth and incidence of disease. Plant Soil 238 245-256 Cook SM, Khan ZR, Pickett JA (2007) The use of push-pull strategies in integrated pest management. Annu Rev Entomol 52 375-400... 

Water that can easily be removed from soil is called gravitational water. Some of the water retained against the pull of gravity is called plant available water. Which of these two would be expected to have more soluble salts Why ... 

The two plants that seem to be the best bet for ridding one s home of such chemicals are ferns and palms. These plants release moisture as part of photosynthesis and, as they do, pull chemicals from the air into their leaves. Even NASA has conducted some greenhouse experiments for long-term space exploration. Within hours, their plants [palms] had removed almost all traces of formaldehyde in the room. Both species of plants are ancient, dating back more than a hundred million years. Another trait they share is that they both live long lives, 100 years or more. This we expect from trees, but ferns and palms are plants plants that can grow to 65 feet in the proper setting Even their individual leaves live for one to two years [ferns] and one to nine years [palms]. Perhaps it is their primal qualities that have contributed to their ability to purify their environment. 

Bulbs and bulbils Fleshy storage organs that break off easily when the plant is dug up or pulled out. 

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