Cow manure can be used to advantage on alfalfa. Corrals can be cleaned up and the manure spread at the beginning of the rainy season. During the winter the manure can be spread as it is produced and very good results will be noticed in the growth during the following summer. It is perfectly rational for you to use the liquid fertilizer as you propose in connection with irrigation water, but this is not generally done because of the cost of the outfit and the labor of handling the material in that way. The best way to keep a barn sanitary is to keep it clean, removing all the waste matter to a considerable distance daily, allowing nothing to accumulate, and have the stable drainage arranged so that the stable can be frequently flushed out into good drainage outlets, carrying the water to grass or alfalfa land if possible. Fertilizing Corn. We are going to plant about 20 acres to corn on a sidehill and intend to put some fertilizer on, but want to give it to the corn only. Would it be a good plan, after we have marked out our rows, to scatter some fertilizer in these marks and put the corn right on top of it? We take it you ask about the use of a readily soluble commercial fertilizer. If so, you can do as you propose, being careful not to use too much. The operation of planting will distribute the fertilizer through enough soil if the application is not too heavy. The effect will depend something upon what showers you get after planting. Scrap Iron as a Fertilizer. Is cast or other iron in small pieces plowed into the land of any benefit to trees as a fertilizer? If so, what would be the value as such per 100 pounds? Junk dealers sometimes offer 25 cents per 100 pounds. If it has any value as a fertilizer, I am satisfied it must be worth four times that price. We pay three cents a pound for sulphate of iron as a fertilizer. Of course, it is a salt and dissolves quickly, therefore, I believe cast iron, even if it works slowly, has some value, and at the same time farmers can clean up and get rid of a lot of rubbish. In most cases the California soils are sufficiently supplied with iron by nature. Iron scraps have a little and remote value because they are so slowly available by the process of rust disintegration. It might, therefore, be worth while for farmers to bury such scrap iron as accumulates on the place below the reach of the cultivating tools. But it would not be profitable to buy iron scraps at junk dealers' price, nor would it be profitable to haul this material any long distance, even if it could be had for nothing. Kelp as a Fertilizer. Are there ill effects from using sea kelp as a fertilizer for orange trees?