One Thousand Questions in California Agriculture Answered Part 52

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Value of Fresh and Dry Manure.

What is the relative value of the weekly or semi-weekly corral sc.r.a.pings which are tramped fine and air-dried; and of the fresh, wet manure from the stable? I do not understand that the latter has appreciable water added, and the amount of sand in the corral sc.r.a.pings would be small.

Fresh, mixed animal manure is usually calculated to contain about 75 per cent of water. Manure which has been quickly dried, without fermentation and without leaching by rains, may be worth four or five times as much per ton. Nothing, however, short of a.n.a.lysis would determine the value of any particular lot, for that depends somewhat upon the way the animals are fed, as well as upon the moisture content.

Shavings in Stable Manure.

Is barnyard fertilizer containing shavings instead of straw, desirable?



Barnyard manure containing shavings is chiefly objectionable because of the amount of inert material. The shavings are exceedingly slow to decompose, and in light soil in considerable quant.i.ties would cause a serious loss of moisture. If applied, on the other hand, to a heavy soil and accompanied by sufficient irrigation water, the effect of making the soil more friable might be very desirable. It depends then upon circ.u.mstances whether shavings can be concited by Prof. Snyder in his "Soils and Fertilizers," cows fed on hay straw is more valuable not only because more easily decomposed, but because its content of plant food is greater.

Handling Grape Pomace.

In the case of grape pomace, would not the large value shown by a.n.a.lysis be chiefly in the seeds? My observation is that these are exceedingly slow to became available in the soil. Would composting break down the sh.e.l.l of the seed?

Grape pomace is slowly available because of the slow disintegration you mention. It could be hastened by drying and grinding, but we doubt if this or other treatment would return its cost. Decay by moisture promoted by composting with manure, kept at a low temperature by continuous moisture would render it sooner available, but this would involve labor which, at our wage rates, would probably make the material cost more than it is worth. This is probably a cost in which time is cheaper than money.

Sheep and Goat Manure.

I can buy goat manure from an inclosure where this is deposited to an amount of about five carloads. Will goat manure be of great value in fertilizing an orchard? If so, how much of it should be spread an an acre?

Acc.u.mulations of sheep and goat manure in a dry situation, that is, where not leached out by heavy rainfall, have been found to run as high as $13 per ton in fertilizing const.i.tuents. The average would, however, be not above $7.50, and would depend not only upon the unleached condition of the material but upon the amount of sand mixed with it. If it is in a situation where sand blows very freely, it might not be worth over $4 or $5 per ton, possibly not that much. You have, therefore, to deal with a condition largely unknown. So far as its fertilizing quality goes, however, it is freely available and directly calculated to stimulate the growth of plants, and probably four or five tons could be used to the acre without injury if well distributed over the surface of the land. Application can be made at any time of the year, for the drying will not injure it. It will not, however, become available until the soil is sufficiently moist to carry its contents to the roots of the plants. Under ordinary conditions in California, application should be made just before the beginning of the rainy season.

Hog Manure and Potatoes.

What is the fertilizing value of hog manure, and also what is the best fertilizer to use for potatoes? Our potatoes are planted early in January.

Hog manure is rather a rank and strong fertilizer, usually very rich, although the quality of it depends upon how well the hogs have been fed - that from grain-fed hogs being notably better. The valuation of hog manure ranges from $2.50 to $3.25 per ton, according to the feeding as noted, while ordinary stable manure may be worth from $2 to $2.75 per ton. It is not a good idea to apply these organic manures directly for the growth of potatoes. It is better to apply them to the land for the growth of a grain or forage crop, plowing in the stubble and using the land for potatoes the following year. If you wish to fertilize directly for potatoes, the use of a commercial fertilizer containing a good amount of potash would be a better proposition.

Fertilizer for Sweet Potatoes and Melons.

I have sandy soil that has been used for sweet potatoes until it is worn out for that crop, and would like your advice as to the best fertilizer to use. Also, what fertilizer would be best for melons on land that has been planted to melons for the past three years?

There is not much difference in the plant food required by the two crops you mention, but both evidently need a freshened soil and an increase of humus. We should apply a half ton to the acre of a complete fertilizer, of which any dealer can give you descriptions and prices. If you wish to do a good job, start a growth of peas or vetches or burr clover, and sow the fertilizer evenly with the seed. Plow the growth under in February and roll (as the soil is sandy) to close down and promote the decay of the green stuff, which ought to be so well accomplished by the date that it is safe to plant sweet potatoes or melons that it will give no trouble in summer cultivation.

An Abuse of Grape Pomace.

I got in an argument with a neighbor of mine who stated that grape pomace is not a fertilizer. Is it so? My neighbor says that two years ago he had two apricot trees in his yard, and they were fine bearing and healthy trees. After making his wine he put the pomace on the ground and they died. Could that be the cause?

Yes, probably. He used too much fresh pomace and the resulting fermentation of its products may have killed the trees. But grape pomace, after going through fermentation and in the process of decay, makes humus in addition to giving potash and other desirable substances to the soil.

Manuring Vineyard.

Does barnyard manure have any injurious effect on the vines if applied on my vineyard? One of my neighbors claims barnyard manure burned his vines so he got no crop wherever he spread the manure, and nothing would now induce him to use it again.

Barnyard manure can be safely used in a vineyard at the beginning of the rainy season, working it in with the plowing, but not using too much.

Wine grapes are sometimes injuriously affected in flavor by the use of such fertilizer, but the growth of the vine itself can be stimulated by the rational use of it. Your neighbor apparently either used too much or made the application at the beginning of the dry season or made some other mistake.

Bones for Grape Vines.

I am going to plant out some grape vines, and would like to know if it is a good plan to put old bones, broken up fine, into the holes when planting.

Yes, if you do not use too much and it is mixed with earth, a little beyond the touch of the roots at planting. You do not need to finely break the bones. The roots will take care of that. But do not put in too much coa.r.s.e stuff, for fear of causing too rapid drainage.

Reviving Blighted Trees.

I have a couple of apple trees here that were hurt by the pear blight three years ago and were cut back since then; they come out each year, but the leaves curl up, and they do not do anything. I would like to know if putting any fertilizer around them would help them to put out their leaves, and if so what I should use?

Put some stable manure on the top of the soil around your trees now so that the rains may reach the contents of the soil, then later in the season dig the manure into the soil. Apply water during the summer time and this will encourage the trees to grow, if there is any vigor remaining in them. This treatment, however, will not protect them from the blight.

One Thousand Questions in California Agriculture Answered Part 52

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One Thousand Questions in California Agriculture Answered Part 52 summary

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