A new six-rowed naked waxy barley variety, ‘Saehanchal’, was developed by the barley breeding team of the National Institute of Crop Science (NICS), R.D.A. This variety was derived from a cross between ‘SB7803G-BC6-B-B-47-2’ and ‘Suwon262’ in 1989. The fi

A new high yield and storability lettuce (Lactuca sativa L.) cultivar Jeokdan was developed from a cross NAAES DL14 (late bolting and high yield) and NAAES DL 108 (late bolting and disease resistance) in 1997. We selected desired charac-2003 year, and we

“Jungsanbyeo” is a japonica rice cultivar developed from a cross between Sambaegbyeo and Milyang107 by Sangju Substation of National Yeongnam Agricultural Experiment station, RDA in 2000. The cultivar is early matured with heading date of July 30 ordinary

It is difficult to produce lettuce in the summer season owing to bolting and several diseases, especially soft rot (Erwinia carotovora supsp. carotovora). We developed a bred the new red leaf lettuce cultivar “eokhagye” which is crisp, delicious and toler

The new leaf lettuce cultivar “Cheonghagye” has been selected for summer season cultivation. The new cultivar is crisp, delicious, bitter taste and tolerant to soft rot (Erwinia carotovora supsp. carotovora). Breeding of “Cheonghagye” began in 1997 with a

Munjangbyeo' is a japonica rice cultivar developed from a cross between Sangsanbyeo and Suweon 397 by Sangju Substation of National Yeongnam Agricultural Experiment Station, RDA in 1999. The cultivar is early matured with heading date of Aug. 2 in ordinar

Sangmibyeo' is a japonica rice cultivar developed from a cross between Sambaegbyeo and Ou 316 by Sangju Substation of National Yeongnam Agricultural Experiment Station, R.D.A. in 1998. The cultivar is early maturing with heading date of August 7 in ordina

Sunmang' is a new rapeseed (Brassica napus L.) of F₁ hybrid with high yield and high quality for oil and meal. This hybrid was developed from the cross between Mokpo-CGMS (male sterile line) and 84055-B-10-3-1-6 (restore line) in 1996. It was a

A sweet sorghum [Sorghum bicolor (L.) Moench] cultivar was planted on 9 and 30 June 2000 at plant densities of 4, 6, 8, 10, and 12 plants m-2 to determine the optimum plant density in Jeju region. There were no significant planting date x plant density interactions for most traits measured. Delaying planting from 9 to 30 June delayed 21 days in heading date, and significantly decreased plant height, the number of productive stems m-2 /, and lodging. Fresh stem yield tended to be higher at the 9 June planting date than at the 30 June planting date, but total sugar and ethanol yields were not significantly affected by planting date. Percentage of soluble solid was higher at the 30 June planting date compared with the 9 June planting date. Fresh stem, total sugar, and ethanol yields quadractically increased from 22.9 to 36.7 t-1 , from 1.66 to 2.54 t-1 , and from 945 to 1440 L-1 , respectively, with increasing plant density. The optimal plant densities for the maximum fresh stem, total sugar, and ethanol were estimated to be 10.7, 9.6, and 9.9 plants m-2 respectively.