38 EXPERIMENT STATION RECORD. [Vol.40 



also presented, showing the composition of new and introduced varieties of sugar 

 cane and the results of fertilizer and cultural experiments with sugar cane con- 

 ducted at Mackay and Bundaberg in a continuation of work previously noted 

 (E. S. R., 37, p. 540). 



Tests of different methods of ratooning at Bundaberg resulted in yields 

 amounting to 38.76 tons of cane per acre for cane ratooned by plowing four 

 furrows between rows 9 inches deep, 41.93 tons where three furrows were plowed 

 (the usual practice in the region), and 36.94 tons where the cane was allowed 

 to volunteer through trash. A fertilizer mixture of 1 cwt. each of sulphate of 

 ammonia and nitrate of soda, and 2 cwt. of tankage resulted in a yield of 5.1.37 

 tons ©f cane per acre as compared with a yield of 48.74 tons from unfertilized 

 plats. A yield of 57.56 tons of cane was obtained on plats subsoiled and receiv- 

 ing 1 ton of lime per acre applied before the plant-cane crop, while a yield of 

 58.54 tons per acre was obtained from limed plats not subsoiled. Applications 

 of lime alone resulted in a yield of 64.5 tons of cane per acre, while lime and 

 a mixed fertilizer consisting of 1 cwt. each of nitrate of soda, sulphate of am- 

 monia, sulphate of potash, and tankage resulted in a yield of 77.^3 tons. This 

 fertilizer mixture without lime yielded 80.75 tons of cane per acre as compared 

 with 60.5 I tons from untreated pints. 



Badila cane planted in rows .".. c>. and 7 ft. apart showed average yields of 04..", 

 53.88, and 49.06 tons of cane per acre, respectively. The use of tops, middli 

 and bottoms and middles of Badila cane for seed resulted in yields of r,u v_\ 

 12.47, and 42.18 tons of cane per acre, respectively. 



A sterile dwarf form, of Deli tobacco originated as a hybrid. J. A. HONIKQ 

 (Bui. Deli Procfstat. Medan, No. 10 (1917), pp. 2.' t . pis. .J).— The author de- 

 scribes a tobacco plant found in a held of Deli tobacco (B. S. 11.. 33, p. 436) 

 having a zigzag form of stem, small. Long-stalked) diamond-shaped Leaves with 

 small appendages on the underside of the Uaves and on the corolla (kroepoek 

 disease), and with so-called "drip tips" on the leaves. When self-fertilized 

 this plant produced 2.S90 individuals, one-fourth being like normal Deli tobacco, 

 one-half hybrid like the mother plant, and one-fourth sterile dwarfs 30 to lit 

 cm (about 11.8 to 15.75*in.) in height, having as young plants long-stalked, 

 irregularly shaped leaves with drip tips and many appendages on the underside. 

 The progeny of nine selfed Fi hybrids consisting of 4,655 individuals, segre- 

 gated in about the same ratio, namely, 1:2:1. Two crossings of hybrid X 

 normal and one reciprocal cross gave a ratio of 1 : 1. 



Five self-pollinated normal F, plants gave 855 normal Individuals, 2 hybrids, 

 and 3 dwarfs. With this single exception a large number of differences in ap- 

 pearance were distributed over the offspring according to Medelian inheritance 

 as if there existed but one factorial difference. The dwarf type is regarded 

 as neither dominant nor recessive. 



Observations of 555 individuals, the progeny of a second hybrid plant ob- 

 tained in the field, showed them to be without exception entirely normal 

 although, owing to the* low viability of the seed, the author suggests that th< 

 individuals may be only the normal fourth part of the offspring, the hybrids 

 and abnormal dwarfs having failed to develop. 



A bibliography of IS titles is appended comprising literature relating to ex- 

 perimental work in tobacco breeding. 



The first Mendelian example of Deli tobacco. J. A. HoNINQ (Meded, Deli 

 Proefstat, Medan, 10 (1917), No. 8. pp. 185 189, pte. ',).- a brief discussion of 

 the experimental work and the results obtained in the hybridization studios 

 noted above. 



Wheat breeding ideals, II. Sntdeb (-lour. Amrr. Soc. Apron.. 10 {1918) t Vl 

 S, pp. 11S-119). — This is a general disCUSSioO of the ends sought by the wheat 



