The growing of asparagus for market in California is proving to be one of the most successful of its minor industries. There is a large area in the State which is exactly suited to the production of this vegetable. This is the region of sedimentary deposits, washed by waters that are to some extent brackish, or naturally saline. Commercial asparagus farming is limited to the reclaimed lands around the bay of San Francisco, the marshy deltas of the San Joaquin and Sacramento rivers, and the so-called peat lands of Orange and San Luis Obispo counties. Small beds, however, for local consumption are to be found in California as generally and frequently as they are in other States.
There is a fascination about asparagus culture that is founded on legitimate financial returns. It is practically "a sure thing" when once established, and the conditions of climate and soil are such that the work attendant on production is a minimum in proportion to the return. No diseases of the plant have yet shown themselves in California, and it is seldom that the weather is unsteady enough to be a factor in limiting production. The deterring feature is the fact that it is not till the third year that a return can be expected on the investment. But as other crops, such as potatoes and beans, can be grown between the rows in the interim, the time of waiting is not so entirely an unproductive one as might at first be supposed.
The methods of preparing, planting, and working are practically the same in all sections of California. The proposed beds are plowed as deeply as possible and thoroughly fertilized. All of the soils appropriate for commercial asparagus farming are so light that deep cultivation is a comparatively easy matter. Furrows for planting are then run and made double depth. Some growers think it worth while to distribute fertilizer along these furrows and then turn for a third time, so as to enrich the ground immediately below the roots to be set out. These furrows are run from four to six feet apart, the latter being considered the better usage. In them one-year-old plants are then set by hand at distances varying from eighteen inches to three feet. The former distance is preferred by the Italian growers on Bay Farm Island in San Francisco Bay, but the Southern growers and those along the Sacramento River lean to the greater distance. The only difference seems to be whether there will be sufficient nutriment in the soil to force the plant into giving as large and tender shoots as where each plant is allowed a larger area. The plants are set with the crowns about four inches below the surface and the roots are carefully spread out before covering. Planting is done any time from November to April, but the middle of February is perhaps the most common time.
The culture for the first year consists in keeping the soil loose and free from weeds. Ordinarily other crops are grown between the rows, and their cultivation serves to keep the ground in proper condition. The asparagus is allowed to come up, feather, and seed without interference, no cutting being done the first year. Care, however, is taken to cut off the tops close to the ground in the fall before the seed begins to drop—the volunteer asparagus being the worst enemy in culture with which the grower has to deal. About the beginning of the rainy season a heavy coating of manure is placed over the beds and left to be leeched in by the rains.
FIG. 48—VIEW OF ASPARAGUS FIELD ON BOULDIN ISLAND, CALIFORNIA
The second year some growers cut more or less for market, but the bed is then longer in coming to its full strength and will not give so large a product the following years. There is a variation in the spring working, according to the nature of the land. Where the soil has a tendency to be cold, the first plowing is away from the rows, so as to let the sun more quickly down to the starting plants. Where the soil is light, or the season forward, this plowing is omitted. The latter plowings are toward the rows, the effort being by ridging to give a long blanched surface to the shoots. For the canneries where nothing but the white product is put up, the shoots are cut the instant they show their tips above the surface. The local market shows a preference for the greener shoot, and so before cutting it is allowed to stretch itself up into the light. The third year regular cutting begins, and from that time forward the beds increase in the quantity and quality of the product for the next fifteen years.
The methods of marketing are somewhat different from those practiced in the East. Little or none of the asparagus is bunched. It is packed loose in boxes holding from forty to fifty pounds, and the loose product is retailed to the consumer by the pound. The first boxes begin to go out by the beginning of February, though small quantities can be seen in market as early as January 15th. The canning contracts run, as a rule, from March 1st to June 15th. After that the weather is so dry that the yield stops unless the beds are irrigated. In most sections, however, irrigation is not necessary up to this time.