To control pest of Brassicaceae leafy vegetable(leaf broccoli, Red Mustard Leaf, Tatsoi) which grows at vinyl house in IKSAN, Jeollabuk-do, the non-treatment was set as negative control, and treatment was divided into Parasitic natural treatment group and general treatment group. And incidence density of pest was surveyed and control effect was analyzed. As a result, in case of spring plants, the leaf damage ratio was decreased by 31% in Leaf broccoli, 30% in Red mustard leaf and 27% in Tatsoi compared to untreatment. In case of autumn plants, it was decreased by 32%, 41% and 17% respectively. The key pests were Plutella xylostella, Pieris rapae, Myus persicae Sulzer, Thrips palmi and Striped cabbage flea-beetle. Compared with the untreatment, the incidence density of each was significantly controlled. Other pests include Spodoptera exigua, Macdunnoughia purissima, Macdunnoughia purissima which showed high incidental density sometimes. In case of spring plants, the number by treatment was increased by 117% in Leaf broccoli, 85% in Red mustard leaf and 1,000% in Tatsoi. In autumn plants, it was increased by 132%, 257% and 1,077% respectively. The used Parasitic natural and eco-friendly materials were Cotesia glomerata, lacewing, ladyburg, Orius laevigatus, Encarsia formosa, Entomopathogenic nematode, Chungjigi and Togkaki. During early development of each pest, the Parasitic naturals were grazed 2~3 times at the interval of 7~10days. During the peak time, eco-friendly materials were sprayed 1~2 times. Based on this, comprehensive management model was drafted by period for each Brassicaceae vegetables pest.

To control Thrips tabaci in Korean leek and green onion which grow at vinyl house in IKSAN, Jeollabuk-do, the non-treatment was set as negative control. In general treatment group, 120 mesh gauze was installed on the side window after planting(May, 2nd) and, in spring, Orius strigicollis (1.0/m2) was grazed 3 times every 7 days from mid of May which is early development stage and In the mid of June, which is the peak stage, plant extracts were sprayed one time. In autumn, O. strigicollis was grazed 3 times every 7 days from mid of September which is early development stage, and in the mid of October, which is the peak stage, plant extracts were sprayed one time. The result shows that the leaf damage ratio was decreased by 22% in Korean leek and by 27% in green onion compared to the untreatment. And the control value of Thrips tabaci shows 78.7% in korean leak and 90.6% in green onion. The density control effect of Thrips tabaci was significantly controlled under max 6.2/plant in general treatment group compared max 25/plant in the untreatment and this result was similar in green onion. The yields by general treatment was increased by 85% in Korean leek and 56% in green onion, compared with non-treatment yields, which was 900kg/10a in Korean leek and 1,287kg/10a in green onion.

Plant height of 'Composite 28' was 89㎝ and heading date was on 4 May with green leaf color and showed high yield among three composite lines. A visual score of winter field survival of 'Composite 28' was 1.0. 1st dry matter yield of 'Composite 28' in Cheonan was 8.64ton per ㏊ compared to introduced variety 'Amba'(7.20ton/㏊). Heading date of 'Composite 28' was 7 days earlier than check variety, 'Amba'.

To get good productivity and high feed value of forage, we develop to new Italian ryegrass (Lolium multiflorum Lam.) 'Kogreen'.variety. In Suwon, heading date of 'Kogreen' was on May 3 but in Yonchun was on 8 May that was 2 day later than that of 'Florida 80' and dry matter yield is 12.7ton/㏊, and had a good cold tolerance.

Managing the fatty acid composition of grazing ruminant diets could lead to meat and milk products t㏊t have higher conjugated linoleic acid (CLA) concentrations, but forage fatty acid dynamics must be more fully understood for a range of forages before grazing systems can be specified. The fatty acid profiles of 23 different forages, including grasses, legumes and wild forage plants were determined. Linolenic(C18:3, 41.1~58.6% of fatty acid), linoleic(C18:2, 10.1~27.4% of fatty acid), and palmitic(C16:0, 9.8~18.0% of fatty acid) acids were the most abundant fatty acids in all species, together representing ~96% of the fatty acids present. Concentrations of fatty acids declined as plants developed, but the fraction contribution of each fatty acid to total fatty acids remained relatively stable over time.

In this study, we conducted to select the promising crops for both uses in the bioethanol and forage production in Korea. The result indicated t㏊t Natsukaje (guinea grass), Gwangpyeongok (corn), Jumbo (sorghum×sudangrass hybrid), SS405 (sorghum×sorghum hybrid), Millex32 (pearl millet), Jeju barnyard grass), Alamo (switch grass) and Selection75 (klein grass) showed the production of biomass from the highest to the lowest in order. However, the order of the production of quality forage was, from the highest to the lowest, Natsukaje (guinea grass), Jumbo (sorghum×sudangrass hybrid), SS405 (sorghum×sorghum hybrid), Gwangpyeongok (corn), Millex32 (pearl millet), Selection75 (klein grass), Jeju (barnyard grass), and Alamo (switch grass). We concluded the Natsukaje (guinea grass) was the best bioethanol crop, and also the Natsukaje (guinea grass) was the best for forage production.

This experiment was conducted to evaluate forage yield and feed value of warm season grass in subtropical area. The species having the fastest heading date was bermudagrass 'ecotype' (24th April) while the heading date of bahia grass 'Argentine' was the latest as 13th August. Plant height and dry matter of switch grass was the highest. Dry matter yield of switch grass was usually greater t㏊n the other entries in Jeju and Wando. Bermudagrass cultivars had higher CP concentration t㏊n the other entries. NDF and ADF concentration in switchgrass was higher t㏊n in bermudgarss and bahiagrass cultivars.

This experiment was conducted to evaluate the effect of seeding rate on the quality and yield of whole crop rice variety, "Namil". Whole crop rice variety, "Namil", was direct seeded at 25 April. The seeding rate were four level(30, 60, 90, and 120㎏/㏊). There was not found significantly difference plant height and dry matter(DM) content among seeding rate. Acid detergent fiber(ADF) and neutral detergent fiber(NDF) content was increased until 90㎏/㏊ of seeding rate. The content of TDN(total digestible nutrient) decreased also with increased seeding rate until 90㎏/㏊ seeding rate. The highest fresh and DM yield showed at 120㎏/㏊ seeding rate. But there was not found significantly difference among 60, 90 and 120㎏/㏊ seeding rate. Although high seeding rate increase the DM yield, 60㎏/㏊ seeding rate will be recommendable as proper seeding rate for whole crop rice.

To know adaptability and production of silage corn, we studied on paddy field experiment. Heading date of 'Kwangpyongok' and 'P32P75' Hybrids was on 15th July, 14th July respectively. The dry matter yield of 'P32P75' hybrid (20.4ton/㏊) was the highest among 10 hybrids and that of 'Kwangpyongok' hybrid (19.1ton/㏊) showed high in domestic corn hybrids and other characters as like feed vales is almost same in 10 hybrids.

The effects of ovulation induction in ussurian bullhead, Leiocassis ussuriensis, were investigated by treating ussurian bullhead with hCG, LHRHa, GnRHa, ovaprim, and pimozide. hCG was injected to ussurian bullhead at 0.75% NaCl, 5,000, 10,000, 20,000, and 30,000 IU, respectively. The ovulation inducement rates were 100% in 20,000 and 30,000 IU. Fertilization rates were 82.7% and 79.8%. Hatching rates were 59.4% and 57.2%. Ovulation time was between 16-19 hr The concentrations of LHRHa injected were 0.75 NaCl, 50, 100, 200, 300, and . The ovulation inducement rates were 100% in 300 and . Fertilization and hatching rates were 84.9% and 68.4% at . The times to ovulation were between 23 hr and 34 hr. Ovaprim of 0.75% NaCl, 1.0, 1.5, 2.0, 2.5 and 3.0 ml/kg were injected to the abdominal cavity. The ovulation inducement rate was highest at 2.0 and 3.0 ml/kg to 92% and ovulation time was between 27-38 hr. LHRHa concentrations of 0.75% NaCl, 50, 100, 200, 300 and were injected with pimozide (). Ovulation inducement rate was 100% from 200 to 400 IU with pimozide. Ovulation time was 22-36 h. Fertilization and hatching rates were 88.9% and 70.4% in with pimozide.

Italian ryegrass (Lolium multiflorum Lam.) is one of important forage crop grass widely cultivated in Korea. The genetic manipulation of Italian ryegrass (Lolium multiflorum Lam.) necessitates a reliable and efficient, genotype-independent method of transformation. We are interested in developing molecular breeding methods to improve its nutritional quality and abiotic stress resistance. Development of a rapid and efficient transformation system is the basis for genetic manipulation of Italian ryegrass. In order to establish an efficient Agrobacterium-mediated transformation system was applied to transfer genes into seven genotypes of Italian ryegress, namely cv. 'Kogreen', 'Kopeed', 'Kowinearly', 'Kowinmaster', 'Hwasan 101', 'Hwasan104' and 'Kowinner.' The transformation system developed in this study would be useful for Agrobacterium-mediated genetic transformation of Italian ryegrass plants with genes of agronomic importance.

Silage corn can make good livestock feed. Anytime drought occurs during the growing season, corn grain yields will be affected. The extent of the loss will depend on stage of grow and the length of time the crop is subject to droughty conditions. During times of extended drought when grain yield potential is sever limited or nonexistent, the plants may still offer a valuable source of nutrients for livestock provided careful attention is given to how it is harvested and fed. As a rule, drought-damaged corn will have 85 to 95 percent of the feeding value of normal corn silage. Ideally, corn silage would be 60 to 70 percent moisture at harvest. Dry conditions around the state cause many corn producers to wonder about making silage from drought-damaged corn. Although silage made from drought-damaged corn is usually not as good as that made from unstress corn, drought -damaged corn can make good livestock feed. This experiment was carried out to know adaptability and forage production and quality of corn hybrid for silage at paddy field of Chonnam Province. As a result of experiment, production of silage corn reduced more than 60% compared to that of normal condition.

Italian Ryegrass, also called annual ryegrass, is a high productivity and feed value, and an upright grass that behaves like a biennial or short-lived perennial. It grows vigorously in winter and early spring. Italian ryegrass and a related species, perennial ryegrass, Lolium perenne, are the two common weedy ryegrassses. Italian ryegrass and perennial ryegrass can hybridize, resulting in offspring that are difficult to identify as either species. Ryegrasses are cultivated for turf and forage. Sometimes Italian ryegrass is grown as cover crop. It has the potential to produce high yields and, with proper management, can be high quality with good animal performance. To develop of a high quality, productivity and early variety, 11 varieties were in the seven different irradiation conditions (0Gy, 100Gy, 200Gy, 300Gy, 400Gy, 500Gy, 1,000Gy) and examined growth and germination characters of each plant as like plant height, number of tillers. As a increase of irradiation, germination rate of 11 Italian ryegrass varieties are somewhat reduced.