440 



EXPERIMENT STATION RECORD. 



fertilizers they cause a more rapid growth and a quicker maturit}' of 

 the cane. 



In 1894. and every year since, experiments have been carried on in 

 making- 1, 2, and 8 applications of an equal amount of nitrogen in the 

 form of nitrate of soda and sulphate of ammonia. The results have 

 been contradictory and no conclusions are drawn. 



In a comparison of deep and shallow cultivation of cane with plows 

 and cultivators, rcspectiveh', better results were obtained by shallow 

 cultivation Avith cultivators. The author believes that, should every 

 planter adopt the method of shallow cultivation of his soil after thor- 

 ough preparation, the yield of cane would be increased in the State 

 from 5 to 10 tons per acre. 



Condensed tables of the weather record of 1897, 1898, and 1899 are 

 given. 



Work of the Hawaiian Experiment Station, 1899, W. Maxwell 

 {Ho7iohihi: Hawaiian Gazette Company, 1899^ pp. 36). — This report 

 coA^ers results obtained during the 3" ear in fertilizer, irrigation, variety, 

 and seedling experiments with sugar cane. In the fertilizer experi- 

 ments sulphate of potash and double superphosphate were used alone, 

 together, and combined Avith different forms of nitrogen. Two varie- 

 ties of cane. Rose Bamboo and Lahaina, were used, the experiment 

 being thus carried out in duplicate. The yields of cane, leaves, and 

 sugar per acre, and the composition of the cane and leaA^es as regards 

 mineral matter and nitrogen for each variety groAvn, are shown in tab- 

 ular form, and the results discussed. In no case in these tests has the 

 use of phosphoric acid resulted in increased yields of sugar. The 

 yields when potash or nitrogen was used were considerably increased, 

 and to about an equal extent. When these elements Avere used together 

 still larger returns were obtained. 



An analysis is given of the sugar-cane soils of the station, and the 

 percentages and total amount of the different elements and acids 

 immediately available to a depth of 15 in. are shown. The aA^ailable 

 amounts of the 4 most vital elements were as follows: Lime, 37,669 lbs. : 

 potash, 25,419 lbs.; nitrogen, 6,519 lbs.; and phosphoric acid. 45,937 

 lbs. The amount of these elements removed by the crop grown and 

 the total yield of dry matter of the crop are shown in the following- 

 table: 



Yield of dry maiier in sugar cane and the amount of vital elements removed per aire. 



