﻿10 BULLETIN 1127, U. S. DEPARTMENT OF AGRICULTURE. 



This variety matures in approximately 122 days and has produced 

 an average acre yield of 2,027 pounds of paddy and 1.191 pounds of 

 straw. On the ordinary prairie lands of southwestern Louisiana it 

 produced 1,850 pounds of paddy per acre. It grows on very rich 

 land without showing a tendency to lodge and has produced acre 

 yields under these conditions as high as 3,420 pounds of grain. The 

 production of 2.500 pounds of paddy per acre has been reported from 

 the Delta lands of the Mississippi ttiver section of Louisiana. 



VINTULA. 



The Vintula variety is a pure-line selection from an unnamed 

 variety from Ceylon which was obtained by the United States De- 

 partment of Agriculture from the Botanical Gardens, Georgetown, 

 British Guiana, where it had been grown experimentally for several 

 years. 



The selection was made at the Rice Experiment Station, Crowley, 

 La., by the writers in 1911. The name Vintula. composed of the 

 first four letters of Vinton, the name of a town in southwestern 

 Louisiana, and the abbreviation of Louisiana, with the letter u in- 

 serted for euphony, was applied to this selection in 1917. This selec- 

 tion was increased from nursery to plat experiments in 1914. The 

 plat yields are given in Table 2. The variety was distributed in 

 southwestern Louisiana for commercial growing in 1918. Enough 

 seed of Vintula (C. I. No. 1241) was grown in 1921 to sow approxi- 

 mately 10,000 acres. 



The culms of the Vintula variety are medium in size, green, and 

 usually number seven to the plant. Their average height, including 

 the panicles, is 51 inches. The culm and sheath nodes are green. The 

 auricles are conspicuous and deciduous. The ligules average five- 

 eighths of an inch in length. The leaf blades are broad, averaging 

 half an inch in width. The panicles, which are more or less open, 

 have an average length of 10 inches, and each bears on an average 145 

 seeds. 



The seeds (PI. Ill, A and B) average 9.6 millimeters in length 

 and 3.1 millimeters in thickness. The glumes are pale yellow and 

 have smooth margins. The hull loosely incloses the kernel, is thin, 

 and sparingly covered with short white hairs. The apex of the 

 hull terminates in two conical light-yellow teeth. These are located 

 on the meson, are unequal in length, and slightly bent ventrad. 

 The conical lateral teeth usually are absent and when present are 

 inconspicuous. 



The kernels (PI. Ill, C and D) average in length 7.2 millimeters, 

 in width 1.8 millimeters, and in thickness 2.6 millimeters. Viewed 

 laterally, their dorsal and ventral margins are unequally convex, 

 the ventral being the less so. Their distal ends are obtuse, but 

 sharply curved toward the ventral margin. The opaque area is 

 never prominent and when present is narrow and located on or near 

 the dorsal margin. 



This variety matures in approximately 123 days and has pro- 

 duced an average acre yield of 2,086 pounds of paddy and 1,149 

 pounds of straw. It has yielded slightly over 2,000 pounds of 

 grain per acre on the lighter prairie soils of southwestern Louisiana 

 and has averaged about 4,000 pounds per acre on the Delta lands of 

 the Mississippi River section of the State. 



