Trays, seed

Seed trays Trays are usually 2-3 in (5-7 cm) deep and of variable size. Wooden trays are rare these days. Plastic ones are cheaper and easier to clean. 

Modules Multicelled seed trays—also known as module trays—are available in plastic and polystyrene. The plastic ones are easier to remove plants from, and thus use again. Each seedling grows in its own individual "mini-pot," so its root system is not disturbed on transplanting. 

Homemade pots and seed trays Foil carry-out containers, deli and margarine tubs, polystyrene coffee cups, and yogurt cartons can all be used. Clean them thoroughly and make holes in the bottom. Egg cartons can be used as module trays. Toilet paper rolls and homemade paper tubes can be planted along with the plant and are useful for plants that resent root disturbance. 

Densely sown seedlings compete for limited light, water, and space, and diseases thrive in these conditions. Plants that suffer a setback at this stage may never catch up. Using modules Is one of the best ways to avoid the problems caused by overcrowding. If you have used pots or seed trays to sow fine seed in, and thus have a plethora of seedlings, you must either ruthlessly thin them, or "prick them out" (see below) so that each has more room. Do this when the first pair of true leaves, rather... 

Mid- to dark gray, hard-bodied, jointed, terrestriai crustaceans up to V4 in (2 cm) iong. They hide during dayiight under seed trays, pots, stones, and other debris, emerging at night to feed. 

Sow them 6-8 weeks before a last frost is due, either in a seed tray or 2-3 seeds to a 314 in (9 cm) pot or module. 

Remove the lid and place the gel tray in a similarly sized container such as a sandwich box or a seed tray. 

Wheat seed (Triticum aestivum L., cv. Wakeland) were broadcast onto moist coarse sand in plastic trays and covered with a layer of sand equal to twice the diameter of the seed. Trays were then covered with aluminum foil and placed in a darkroom at 22 + C for four days. 

Besides mulch films, other potential agricultural applications for biodegradable polymers include devices for the controlled release of agrochemicals (such as fertilisers, soil applied active ingredients, insect pheromones and so on), disposable articles such as plant pots, composting containers and bags, envelopes of ensilage, seed trays and so on. 

Extra-Fine Precipitated Hydroxide. Very fine (< 1 /im-diameter) particle size hydroxide is produced by precipitation under carefully controlled conditions using specially prepared hydroxide seed. Precipitation is usually carried out at low (30 —40°C) temperatures causing massive nucleation of fine, uniform hydroxide particles (Fig. 5). Tray or tumiel Ape dry ers are used to dry the thorouglily washed filter cake to a granular product wliich is easily pulverized to obtain the fine hydroxide. Alternatively, the washed product is spray dried. Precipitation from an organic-free aluniinate Hquor, such as that obtained from the soda—sinter process, fields a very wliite product. Tlie fine precipitated hydroxide is used by the paper and plastic industries as fillers. 

Seed potatoes usually appear in nurseries, or are shipped by mailorder suppliers, in late winter to early spring, in order that they may be "chitted" for a few weeks before planting out. Lay out the tubers in shallow trays—egg cartons near right) are ideal. Place the end with the most "eyes" (dormant buds) uppermost. Put them in a light, warm place until they sprout. Once frost has become rare and the soil has warmed up, plant them out far right) with the sprouted end uppermost. 

Susceptible plants Seeds, seedlings, cuttings, roots, and vegetable parts at or below soil level, such as carrot and celery. Will spread rapidly through trays of seedlings, such as bedding plants. 

Preparation of Modified Soy Proteins from Germinating Soybeans. Soybean seeds (12 g dry weight) were germinated on wet Vermiculite in a metal pan covered with aluminum foil. Water was added to the tray as needed during the course of germination. To collect products, the germinated seeds were washed and then ground with mortar... 

Seeding cells into Corning 10-Tray CellSTACK... 

While there are machines that can place seeds in all 128 cells of the tray simultaneously I have the students sow the seeds by hand. It is a little slower, but is a contemplative process that is conducive to conversation. As the class sows the pepper, tomato, basil, and eggplant seeds, the questions emerge out of the silence. Sang Min, who has happily been using synthetic fertilizers for many years, asks, What is wrong with chemical fertilizers And, what is the organic alternative ... 

Another student, Jim, who is also clearly paying attention while dropping seeds into the tray asks, What about the P, K part of N, P, K Cover crops are just providing nitrogen. How do organic farmers get P and K and other nutrients My answer is, compost, which is the other important organic fertilizer. Let s go out to the piles and take a look now. ... 

Set up a series of coverslips in multiwell dishes (see 2.2). 48 or more coverslips are required, i.e. 2 multiwell trays. Each well should be seeded with 1-2 X 104 cells in 0.5 ml medium and the cells allowed to incubate overnight to ensure exponential growth. It is preferable to use Hepes buffered medium as the regular harvesting required makes it very difficult to maintain pH with a bicarbonate buffer. It is also important not to let the temperature fall during sampling which should be done in a 37°C room. 

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