224 AGRONOMY [BoT. Absts., Vol. X, 



1465. CoRREA Mendes, F. C. Relatorio de alguns servifos mais importantes a cargo da 

 Direcfao dos Servifos Agricolas, e Florestais, 1919-20. [Report of the Director of the agri- 

 cultural and forestry service.] Bol. Agric. [Nova Goa] 2: 28-61. 1920. — The author outlines 

 the activities of the agricultural and forestry service, the most important feature of which 

 is an extensive plan for encouraging the cotton industry. — John A. Stevenson. 



1466. Cross, W. E. Distancia a que debe plantarse la caSa de azucar. [Planting distance 

 for sugar cane.] Rev. Indust. y Agric. Tucuman 10: 87-100. 1919. — As a result of 3 and 4 

 year tests with a number of varieties of sugar cane the author concludes that to secure most 

 economically the greatest quantity of sugar per hectare the distance between rows ought to 

 be the minimum distance which permits of convenient cultivation with modern cultivation 

 machines. This distance is 1.5-1.8 m. — John A. Stevenson. 



1467. Cross, W, E. El deterioro de las canas cortadas. [Deterioration of cut cane.] Rev. 

 Indust. y Agric. Tucuman 10: 54-55. 1919. — The necessity of milling the Javan varieties of 

 cane as soon as possible after cutting is emphasized. A delay of 3-5 daj's is permissible in 

 cool weather, but the time should be shortened beginning with September. — John A. Stevenson, 



1468. Cross, W. E. El problema de la cafia no molida. [The problem of uimiilled cane.] 

 Rev. Indust. y Agric. Tucuman 10: 42-45. 1919. — Wet weather and other conditions often 

 make it impossible to mill all available cane in a given season. Experiments were conducted 

 to ascertain the effect of leaving cane in the field for 2 seasons. During the seasons 1911-13 

 and 1916-18 the varieties Kavangire, POJ313, 234, 36, and 228 did not suffer any loss in sucrose 

 or purity, and continued to grow during the 2nd season. The ratooning power of the stools 

 was not injured. — John A. Stevenson. 



1469. Cross, W. E. El tratamiento de la cafia danada por las heladas. [Treatment of cane 

 injured by freezing.] Rev. Indust. y Agric. Tucuman 10: 143-153. 1920. — Temperatures of 

 —2 to — 26°C. in July, 1919, injured cane in Tucuman. Varieties Rose Bamboo and B208 

 showed practically no resistance, Java 228 and 108 were somewhat more resistant, and Java 

 36, 213, and 234 were very notably resistant. Decomposition of several types (Leuconostoc 

 and other organisms) may follow freezing. Under Tucuman conditions it is best to leave 

 frozen cane in the fields until cut, but cutting as soon as possible. In the mill great care must 

 be exercised in handling the juice. Cleanliness is essential to prevent further fermentation. 

 Cane too badly fermented for grinding can be used for alcohol or for fuel. — John A. Stevenson. 



1470. Cross, W. E. Informe anual del ano 1918. [Report for 1918.] Rev. Indust. 

 y Agric. Tucuman 10: 1-30. 6 fig. 1919. — Various crops were tested as to availability for 

 replacing cane, in which over production is threatened. Both native and Javan cane seedlings 

 were studied. Other sugar cane work included irrigation experiments, fertilizer tests, plant- 

 ing methods, distance of planting, and the effect of freezing. A number of cane varieties are 

 described. Tests were made with spineless cactus, the Dahomey variety of sweet potato, 

 and with cotton. Varietal tests with tomatoes and citrus were also carried out. — John A. 

 Stevenson. 



1471. Cross, W. E. Informe anual del afio 1919. [Annual report for 1919.] Rev. Indust. 

 y Agric. Tucuman 11 : 1-24, 29-44. 19 fig. 1920. — The activities and projects of the Tucuman 

 agricultural experiment station include experiments with sugar cane, sugar beets, cotton, and 

 a wide range of forage crops. — John A. Stevenson. 



1472. Cross, W. E. La necesidad de la rotacion de cultivos para la cafia de Java. [Neces- 

 sity for crop rotations with the Javan cane varieties.] Rev. Indust. y Agric. Tucuman 10: 

 115-124. 2 fig. 1920. — The replacing of native (criollo) varieties of sugar cane with Javan 

 seedlings necessitates changes in field practice of which crop rotation is the most important. 

 The rotation recommended for Tucuman is 4 years in cane and 1 year in cowpeas, either alone 

 or interplanted with maize; the cowpeas are plowed under. The plan recommended reduces 

 the acreage in cane but gives a higher total yield. — John A. Stevenson. 



