22 BULLETIN 119, U. S. DEPARTMENT OF AGRICULTURE. 



RECENT INTRODUCTIONS. 



During the past 10 years the Department of Agriculture has intro- 

 duced about 50 different lots of mung beans from various sources, 

 which represent about 16 distinct varieties. These have been tested 

 at Arlington farm, Virginia, for periods varying from two to seven 

 years, and also in cooperation with various experiment stations. 

 The following list gives the source of each of these lots, together with 

 brief notes on their agricultural characteristics, based primarily on 

 their behavior at Arlington farm : 



S. P. I. No. 



224. From North China, 1898, under the name of "lan-tou (lan-dow)." Seeds olive. 

 No cultural notes. 



486. From Amur Province, Siberia, where imported from China and called "lan-tou 

 (lan-do)," 1898. Seeds olive. No cultural notes. 



1100. From Turkestan, 1898, where it is called "naish" (probably error for "mash"). 

 "The native Sarts use it for food, and the hay makes good winter fodder." 

 (Hansen.) Seeds olive. No reports of trials. 



1161. From Kulja, China, 1898. Grown at Arlington farm five seasons; also at Chil- 

 licothe and San Antonio, Tex. Stems suberect, 16 to 20 inches high. Eighty 

 per cent of the pods mature in 100 days. Pods black, seeds olive. Appar- 

 ently identical with thisare Nos. 17290, 17303, 22409, 28053, 29445, and 30748. 



1385. From Tashkend, Russian Turkestan, 1898. Grown at Arlington farm for six 

 seasons. Plants 18 to 20 inches high, sprawling in habit. At the end of 120 

 days about 60 per cent of the seed is ripe, but many of the leaves become half 

 dry from leaf-spot. This variety is a poor seeder and much inferior to others 

 in habit. Seeds olive. The variety has also been grown at Chillicothe and 

 Amarillo, Tex., where it grows similarly but not so large. 



2873. From Wuchang, China, 1899. " Itis often planted among the growing rice, etc." 

 Grown at Arlington farm in 1900, when it proved to be very similar to No. 

 1385, but a little earlier. 



3868. From China, 1899. Grown at Arlington farm for five seasons. Identical with 

 No. 17283. 



5071. From Wahiawa, Oahu, Hawaii, 1900. Grown at Arlington farm for six seasons. 

 Identical with No. 6562. 



5435. From Calcutta, India, 1900. Grown at Arlington farm, 1905. Planted on June 



16 it was only in bud when killed by frost on October 12. Plants 18 to 24 

 inches high, decumbent, slender stemmed. Seeds yellow, small. 



5436. From Calcutta, India, 1900. Seeds globose, small, green marbled with black, 



distinct from any other lot. No field notes. 



5437. From Calcutta, India, 1900. Grown at Arlington farm for three seasons. Plants 



erect, 12 to 15 inches high, the pods about all ripe in 80 days. Seeds green. 



An early variety but much subject to leaf-spot. 

 5518. From Makassar, Celebes, 1900. Grown at Arlington farm one season, 1905. A 



very late variety, planted May 26 and beginning to bloom September 23, 



but no pods had matured when killed by frost on October 12. Plants 30 inches 



high, half erect. Seeds olive. 

 6224. From Negros, Philippine Islands, 1901, where it is called "mung (mongo)." 



Seeds yellow. No cultural notes. 

 6321. From Tokyo, Japan, 1901, under the name "yainari." Grown at Arlington 



farm for three seasons. Plants 18 to 20 inches high, the bulk of the pods 



ripening in 90 days. Seeds green. Foliage badly affected by leaf-spot. 

 6378. Progeny of No. 3868. 



