My trees, spaced about 40 x 40 ft., have grown quite rapidly so that now some of the limbs are almost touching. Tree ML No. 2, which is about average size, measured last fall in diameter 12-1/2 inches, in height 24 feet, with a limb spread of 30 feet. By 1943 the trees were getting so large that cultivation was discontinued. An attempt is made to keep all litter possible in the orchard, which, with the shade of the trees, has caused much of the soil to become loose and mellow. Since our sandy soil is very low in calcium I applied limestone one time at the rate of about 1500 lbs. per acre. This I hoped would improve the texture of the soil and make better conditions for growing bur clover between the trees. Basic slag which contains about 10% phosphate was applied at the rate of about 600 lbs. per acre in the early '40's. For the last four or five years I applied about 200 lbs. of guano (4-10-7 usually) and 200 lbs of basic slag annually. Since 1944 I have been adding about 50 lbs. of minor mineral elements to the above mixture. Whether it is a coincidence or not I cannot say, but the next year after applying these elements my yields increased from 430 lbs. the previous year to 961 lbs. and have remained high ever since. Minor mineral elements show beneficial results on our garden crops, and I am inclined to believe they are needed, since our soil is so sandy and porous, and especially the soil that has been cultivated so long. Since my trees have produced so well with this moderate fertilization, I have made no check against higher rates of application. In fact I am against the use of large amounts of mineral guanos since I know certain tender shrubs and plants are injured by their use and some soil bacteria and animal life are also harmfully affected, according to reports I have read. Three of my trees bore a few nuts at four years. No record of yields was kept until the seventh year or 1942, in which I gathered about 328 lbs. of nuts. After that my records show for 1943, 554 lbs., 1944--430 lbs; 1945--961 lbs; 1946--1722 lbs; 1947--1554 lbs. No individual tree records were kept except in a few cases. I kept a rough record by looking at the burs at the end of the season, and classed trees as excellent, good, or poor producers, along with other characteristics of the trees. However, I know several of my trees produced over 100 lbs. each in 1946 and one tree, ML No. 2, of which I kept a record by weight, in 1947 produced a little over 150 lbs. of nuts. [A note from Mr. Jones early in 1949 reports a crop of 1,836 pounds of chestnuts harvested from his 21 trees in 1948, the largest yield to date. His ML No. 2 tree produced 165 pounds.]