. Better fruit. Fruit-culture. Courtesy College uf Ayriciillure, Berkeley, California Showing almond trees that have been deheaded and topworked. This illustration shows the trees after the tops have had two seasons' growth and just alter they had been pruned. wood makes it the finest kind of fuel and when old orchards are being dug up the returns from the sale of wood often more than pay for the expense of digging and cutting up the trees and burning the brush. The nuts are of two general classes— sweet and bitter almonds. The former is primarily the almond of commerce, though the latter is u
. Better fruit. Fruit-culture. Courtesy College uf Ayriciillure, Berkeley, California Showing almond trees that have been deheaded and topworked. This illustration shows the trees after the tops have had two seasons' growth and just alter they had been pruned. wood makes it the finest kind of fuel and when old orchards are being dug up the returns from the sale of wood often more than pay for the expense of digging and cutting up the trees and burning the brush. The nuts are of two general classes— sweet and bitter almonds. The former is primarily the almond of commerce, though the latter is used largely in the manufacture of almond oil and almond flavoring, as well as in the manufacture of prussic acid. The bitter almond is also used largely in nurseries as a root- stock upon which to bud the almond and some other fruits. For a long time there has been con- siderable evidence to show that some varieties are always self-sterile while a few are sometimes self-fertile. Work done in 1916 and 1917 by Prof. Tufts shows that practically all varieties are self-sterile and that some of the self- sterile varieties are also inter-sterile. In these tests the principal commercial varieties were used. Blossoms of each variety were pollenized with pollen from its own blossoms and from each of the others. Checks were for natural pollination with each variety. The im- portant results of this work arc briefly summarized as follows: The Nonpariel and are inter- sterile, although both are inter-fertile with the Ne Plus Ultra. The Langucdoc and Texas are inter- sterile. The and Peerless are practically inter-sterile. The California has proved the best pollenizer thus far tested, for all varie- ties that bloom near it. The Drake is inter-fertile with the Nonpareil, , Ne Plus Ultra, Peer- less and Jordan, the only ones tested. The is inter-fertile with the Drake, Jordan, California, Languedoc, Ne Plus Ultra and Texas. The Ne Plus Ultra is inter-fertile with t
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