236 Vineyard Culture. 



II. MANURES RICH IN POTASH. In general, the 

 employment of substances more especially favoring the 

 growth of the plants does not render unnecessary the 

 use of nitrogenous manures. Otherwise, the plants 

 becoming soon exhausted, would only put forth poor 

 and meagre shoots. 



Pomace. This substance, which is very rich in salts 

 of potash, as seen in the foregoing analysis, is in gen- 

 eral use in vineyards, and yields excellent results. 



Wood-Ashes. These ashes, leached, or, better still, 

 used in their natural state, give very good results, as 

 is proved by certain growths of Volnay and Pomard. 

 They may be procured in very large quantities in the 

 neighborhood of moors, and waste and uncultivated 

 lands, by removing the turf from the surface of the soil, 

 and burning it on the spot. There have lately been 

 discovered, in the very center of the city of Lons-le- 

 Saulnier, and in the neighborhood of Poligny, immense 

 deposits of ashes, left from the working of salt-pits, by 

 the Romans. These ashes will prove a mine of wealth 

 for the vineyards of the Jura. 



Woody Plants. All shrubs, especially those which 

 retain their leaves, may be employed to manure the vine, 

 after their young shoots have been trodden down by the 

 horse's feet, or cart-wheels. Of this kind are the rock- 

 roses, heaths, furze, box-wood, hedge-clippings, the 

 juniper tree, young pines, and especially their twigs. 

 These shrubs also contain a great deal of potash. 



QUANTITY OF MANURE TO BE EMPLOYED. It is 

 difficult to state the precise quantity of manure which 

 ought to be applied to the vineyard. That must de- 

 pend, chiefly, upon the degree of vigor it is desired to 



