No. 1, August, 1920] AGRONOMY 7 



unripe seeds is hastened after drying in the sun. — The riper the seeds and the further t he after- 

 ripening has progressed, the more quickly they germinate and the higher the percentage of 

 germination and the better the seedlings they produce. — Abnormal seedlings often app< 

 "Milk-ripe" grains often produce radicles but no plumules. Fully ripe grains often produce 

 plumules but no radicles. — 11. B. Reed. 



37. Kondo, M. Ueber die in der Landwirtschaft Japans gebrauchten Samen. [Seeds 

 used in Japanese agriculture.] Ber. Ohara Inst. Landw. Forsch. 1:261-32-1. 17 fig. 1918. — 

 An account of the morphological characters of certain seeds and their seedlings. Discusses 

 such features as the external appearance of the seed, color, size, weight, anatomical structure 

 of the seed coat, embryo, and seedling. — Seeds of the following plants are so described: 

 Raphanus salivus, Solanum Melongena, Cucurbila moschata var. Toonas Makino, Lagenaria 

 vxdgaris, Benincasa cerifera, Citrullus vulgaris, Luffa cylindrica, Momordica charantia, Cucu- 

 mis melo, Cucumis sativus. — Literature cited. — H. S. Reed. 



38. Kulkarxi, M. L. Further experiments and improvements in the method of planting 

 sugar cane and further study of the position of seed in the ground while planting. Agric. Jour. 

 India 14 : 791-796. PI. 29-32. 1919.— Sugar cane cuttings with one bud, planted wit h the bud 

 pointing upward, sprouted 82 per cent and averaged 5.1 pounds per cane as compared with 

 50 per cent sprouting and 4.3 pounds per cane where cuttings with three buds were planted 

 with the buds pointed sideways. The yield of crude sugar was about 25 per cent greater from 

 the single bud plantings. Results from placing maize, cotton and jack beans with the seeds 

 pointing upwards, sideways and downwards are given. In all cases seeds pointed upwards 

 gave the poorest results. The author attributes poor stands and sickly plants to indiscrim- 

 inate placing of seeds, or of buds where cuttings are used in planting. — J. J. Skinner. 



39. Maceda, F. N. Selection in soy beans. Philippine Agric. 8: 92-98. 1919. 



40. Menual, Paul, and C. T. Dowell. Cyanogenesis in sudan grass: A modification 

 of the Francis-Connell method of determining hydrocyanic acid. — Jour. Agric. Res. 18: 447- 

 450. 1920. — Sudan grass [Andropogon sorghum Sudanensis] is found to contain about one- 

 third as much hydrocyanic acid as is found in grain sorghums. The quantity is greatest in 

 the young plant and decreases rapidly as the plant matures. There is more acid in the plant 

 in the morning than in the afternoon. — D. Reddick. 



41. Mievelle, R. Essais des culture du ble au Tran-ninh. [Experiments in cultivating 

 wheat in Tran-ninh.] Bull. Agric. Inst. Sci. Saigon 1: 364-369. 1919. 



42. Molegode, W. Transplanting of paddy. Tropic. Agriculturist 52: 199-200. 1919. 

 — Results of many experiments on the effect of transplanting rice are given which show an 

 increase of 33^ to 220 per cent in yield. Figures are also given to show that in all recorded 

 tests the increased yield and the seed saved by transplanting more than equalled the extra 

 cost incurred by the operation. — R. G. Wiggans. 



43. Mooers, C. A. Planting rates and spacing for corn under southern conditions. 

 Jour. Amer. Soc. Agron. 12: 1-22. 1920. — In general the small and short seasoned varieties 

 require thicker planting than the large long-seasoned varieties. Experimental results indi- 

 cate a close relationship between the best rate of planting for grain production and a definite 

 yield of grain per plant. To approximate the proper stand of corn a simple equation may be 



56Y 



used as follows: N = ■ In this equation N stands for the number of stalks per acre, Y 



F 



for the expectancy or approximate production in bushels per acre of the field in question under 



average seasonal conditions and F is the standard varietal factor or the average weight of 



grain per plant in pounds at the best rate of planting as determined experimentally for the 



variety in question. In the spacing experiments it was concluded that the best results in 



practice will probably be attained with a width of row which permits the satisfactory use of 



tillage implements but allows the determined number of stalks to be as widely spaced as 



possible. — F. M. Schertz. 



