IS 



FEEDING FARM ANIMALS 



CARBONIC ACID 

 OXYGEN 



or mineral material is furnished in the food. A 

 variety of food, including coarse fodders and the 

 legumes, makes it possible to supply the mineral 



materials in abun- 

 dance. 



Water is found in 

 all plants, even in 

 those dead and air- 



__ 



dry. Young grow- 

 ing plants contain 

 much, often three- 

 fourths or more of 

 their weight. Do 

 you wonder now 

 why water in the soil 

 is so important for 

 the production of 

 good crops ? The 

 plant not only must 

 have the water, but 

 the only way it can 

 make use of it is to 

 carry it into the 

 plant through the 

 roots. 



Water serves as a 

 HOW THE SAP CURRENTS MOVE carrier of plant food 



The unmanufactured sap current taken through the TOOtS to 

 into the plant through the roots moves up- 



ward, while the manufactured product of CVCry part OI the 



the leaves moves downward. _ 



plant. It is to the 



plant what blood is to the animal. Some people 

 think that dew or rain on the leaves is of value to 



WATER AND 

 MINERALS 



