Agriculture for Beginners - Chapter 4 pps

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Ngày tải lên: 02/07/2014, 04:20

... VII. 10 CHAPTER I. CHAPTER II. CHAPTER III. CHAPTER IV. CHAPTER V. CHAPTER VI. CHAPTER VII. CHAPTER VIII. CHAPTER IX. CHAPTER X. CHAPTER XI. CHAPTER XII. CHAPTER I CHAPTER II CHAPTER III CHAPTER ... XII. CHAPTER I CHAPTER II CHAPTER III CHAPTER IV CHAPTER V CHAPTER VI CHAPTER VII CHAPTER VIII CHAPTER IX CHAPTER X CHAPTER XI CHAPTER XII...

Ngày tải lên: 02/07/2014, 05:20

... requirements: 1. Legumes for gathering nitrogen. 2. Money crops for cash income. 3. Cultivated crops for tillage and weed-destruction. 4. Food crops for feeding live stock. CHAPTER II 30 CHAPTER II THE ... From the root-hairs, foods are carried to the inside of the root. From this you can see how important it is for a plant to have fine, loose soil for its root-hairs; also ho...

Ngày tải lên: 02/07/2014, 05:20

... cross-pollination. As a rule cross-pollination makes seed that will produce a better plant than simple pollination would. Cross-pollination by hand is often used by plant-breeders when, for purposes ... this process are illustrated in Figs. 37 , 3 8 -3 9); (2) cover the flower thus treated with a paper bag to prevent stray pollen from getting on it (see Fig. 40); (3) when the ovary is s...

Ngày tải lên: 02/07/2014, 05:20

... as to force nourishment into the inserted bud. [Illustration: FIG. 71. Sloping line shows where to cut tree] CHAPTER IV 46 ground, in order that a low foliage may lessen the danger of sun-scald ... bud, and the bud-shoot grows three or four feet. One year later the shoot branches and the top begins to form; and in the fall of the following year the tree may be sold as a two-year-old, alth...

Ngày tải lên: 02/07/2014, 05:20

... be put. The best manure for watermelons is a compost of stable manure and wood-mold from the forest. Pile the manure and wood-mold in alternate layers for some time before the planting season. ... have cold-frames in addition to the hotbed; these need not be more than two or three sashes. =Cold-Frames.= A cold-frame is like the frame used for a hotbed, but it is placed on well-manured ....

Ngày tải lên: 02/07/2014, 05:20

... scab at the next harvest. Therefore before they are planted, seed potatoes should be soaked in a weak solution of formalin for about two hours. One-half pint of formalin to fifteen gallons of ... will remember that formalin is the substance used to prevent grain smuts. Write to your state experiment station for a bulletin telling how to use formalin, as well as for information regarding...

Ngày tải lên: 02/07/2014, 05:20

... whole territory shown by the map on page 177 . [Illustration: FIG. 172 . ADULT COTTON-BOLL WEEVIL Enlarged] This weevil is a small gray or reddish-brown snout-beetle hardly over a quarter of an inch ... early for the weevils to do it much harm. A second is to kill as many weevils as possible by burning the homes that shelter them in winter. CHAPTER VII 77 [Illustration: FIG. 176 . PUPA...

Ngày tải lên: 02/07/2014, 05:20

... the cane is usually crushed for sugar or for molasses. [Illustration: FIG. 213. STALK OF SUGAR-CANE A-B, joints of cane showing roots; B-C, stem; C-D, leaves] The sugar-cane is a huge grass. The ... successful one is as follows: for the first year, corn heavily fertilized with stable manure; for the second year, sugar-beets; for the third year, oats or barley; for the fourth year,...

Ngày tải lên: 02/07/2014, 05:20

... growth of mowing and pasture crops. Therefore to the grower of stock the management of grass crops is all-important. In planting either for a meadow or for a pasture, the farmer should mix different ... CUTTING] CHAPTER IX 99 If this crop is grown for hay, the method of seeding and cultivating will differ somewhat from the method used when a seed crop is desired. When cowpeas are pl...

Ngày tải lên: 02/07/2014, 05:20

... fowls were for food, for fighting, and for sacrifice. To-day the domestic fowl has four well-defined uses egg-production, meat-production, feather-production, and pest-destruction. CHAPTER X 111 body ... kinds, such as cotton-seed meal, linseed meal, wheat bran and middlings, gluten, and similar grain by-products. Tankage for young pigs and meat scraps for chickens are high-grade...

Ngày tải lên: 02/07/2014, 05:20

... Which cow yielded the more butter-fat? What was the money value of the butter produced by each if butter-fat is worth twenty-five cents a pound? CHAPTER XI 123 CHAPTER XI FARM DAIRYING SECTION ... animal for one day. If the animal is to have a proper ration, we must bear in mind what the animal needs in order to be best nourished. To get material for muscle, for blood, for milk, a...

Ngày tải lên: 02/07/2014, 05:20

... 112 Flower gardening, 10 8-1 21 Fly, 146, 150 Formalin, 135, 136, 138 Fowls, 28 2-2 86 Fruit mold, 126 , 142 Fruit rot, 122 Fruit tree, how to raise a, 7 6-8 7 Fultz, Abraham, 65 Fungi, 125 , 126 , 127 Garden, ... 107 Window box, 118 Window-garden, 11 9-1 21 Window-gardening, 119 Worn-out land, reclaiming of, 19, 244 Yeast, 127 , 128 End of the Project Gutenberg EBook of A...

Ngày tải lên: 02/07/2014, 05:20

... its behavior with respect to time. Chapter 2. 1 has already mentioned the static characteristic, and described the final values for various manipulating variables. No account is tak- en of changes ... of a change in manipu- lating variable is only reproduced in the process variable after the dead time has elapsed. If the change in manipulating variable was too large, there is a time...

Ngày tải lên: 07/08/2014, 15:20

... time, for mathematical analysis, the area of the control error is also used as a measure of control quality (see Fig. 46 ). Linear control area (linear optimum): [A] min = A 1 - A 2 + A 3 Magnitude ... feasible and because of its clear mathematical analysis. Fig. 46 shows that for a step change disturbance, the overshoot amplitude X o and the stabilization tim...

Ngày tải lên: 07/08/2014, 15:20