The planting date of corn for silage has been delayed because of spring drought and double cropping system in Korea. This experiment was conducted to evaluate agronomic characteristics, forage production and feed value of corn at April and May in 2019. Experimental design was a split-plot with three replications. Planting dates (12 April and 10 May) were designated to the main plot, and corn hybrids (‘P0928’, ‘P1543’ and ‘P2088’) to the subplot. The silking days of the early planting date (12 April) was 79 days and that of the late planting date (10 May) was 66 days (p<0.0001), however, there were no significant differences among the corn hybrids. Ear height of the late planting date was higher than that of the early planting (p<0.05), while there were no significant differences in plant height of corn. Insect resistance at the early planting was lower than that of late planting (p<0.05), however, lodging resistance was no significant difference at planting date. The rice black streaked virus (RBSDV) infection of early planting was 3.7% and that of late planting was 0.3% (p<0.001). Dry matter (DM) contents of stover, ear and whole plant had significant difference at planting date (p<0.05). And differences in ear percentages were observed among the corn hybrids (p<0.01). And ear percentages of early maturing corn (‘P0928’) was higher than for other hybrids. Ear percentage at the early planting date was higher than that at the late planting date (p<0.01). DM and total digestible nutrients (TDN) yields had significant difference at planting date, however, there were no significant differences among the corn hybrids. DM and TDN yields at the late planting (21,678 kg/ha and 14,878 kg/ha) were higher than those of the early planting (13,732 kg/ha and 9,830 kg/ha). Crude protein content at the early planting date was higher than that of the late planting. Acid detergent fiber content of the late planting was lower than that of the early planting date (p<0.01), while there were no significant neutral detergent fiber content difference among the corn tested. Calculated net energy for lactation (NEL) and TDN at the early planting were higher than those of at the late planting (p<0.01). Results of this our study indicate that the late planting date (May) is better than early planting date (April) in forage yield and feed value of corn. Therefore, the delay of planting date by May was more suitable for use in cropping system.
Cattle feeding in South Korea has been heavily dependent on domestically produced rice straw and imported grain. Around 42% of domestically produced rice straw is utilized for forage, and the remainder is recycled to restore soil fertility. Approximately 35% of round baleages were made with rice straw. However, higher quality hay is desired over rice straw. Due to increasing stockpiles of rice, there has been an economic burden on the government to store the surplus; therefore production of annual forage crops in rice fields has been further promoted in recent years. Hay import from the USA currently constitutes more than 80% of total imported hays. The main imported hays are alfalfa (Medicago sativa), timothy (Phleum pretense), and tall fescue (Festica arundinacea). The estimated forage required for cattle feeding was approximately 5.4 million MT in 2016. Domestically produced forage sates only 43% of that value, while low quality rice straw and imported hay covered the rest of demand by 33% and 20%, respectively. As utilization of domestically produced forage is more desirable for forage-based cattle production, long-term strategies have been necessary to promote domestic production of high quality baleage. One such strategy has been utilizing the fertile soil and abundance of fallow rice fields of western region of S. Korea to produce forage crops. Italian ryegrass (Lolium multiflorum) is the most successfully produced winter annual in the region and is approximately 56% of the total winter annual forage production. Forage sorghums (Sorghum bicolor), sorghum × sudangrass hybrids, and hybrid corn (Zea mays) produce a substantial amount of warm-season forage during summer. Produced forage has been largely stored through baleage due to heavy dew and frequent rains and has been evaluated according to S. Korea’s newly implemented baleage commodity evaluation system. The system weighs 50% of its total grading points on moisture content because of its importance in deliverable DM content and desirable baleage fermentation; this has proved to be an effective method. Although further improvement is required for the future of forage production in South Korea, the current government-led forage production in rice fields has been able to alleviate some of the country’s shortage for quality hay.
This experiment was carried out to determine the effect of organic fertilizer and seed mixture on productivity, botanical composition and forage quality in middle areas(Geumsan, 250m sea level) pasture. Total six experimental pastures (orchardgrass, timothy and tall fescue based seed mixture and with or without organic fertilizer) were established in autumn, 2014 and evaluated productivity and agronomic characteristics from 2015 to 2016. Plant heigh was higher in orchardgrass based mixture and orchardgrass and tall fescue based mixture were higher in 2nd harvest. There was not found the significant difference among treatment(P<0.05) in dry matter (DM) content. Botanical composition in 1st harvest was higher weed portion in orchardgrass based mixture and legumes was disappeared at 3rd harvest in all treatments. Fresh and dry matter yield was higher in 2nd year than 1st year. In 1st year, orchardgrass based mixture with organic fertilizer plot was the highest(P<0.05) DM yield, but tall fescue based mixture with organic fertilizer was the highest in 2nd year. Content of crude protein (CP) was the highest in tall fescue based mixture and Timothy based mixture showed low in ADF (acid detergent fiber) and NDF (neutral detergent fiber) content. But the content if in virto dry matter digestibility was higher than others. In 2nd year, the nutritive value of 2nd and 4th harvested grasses were higher and average RFV (relative feed value) value was the highest at 4th harvest. According to this result, orchardgrass and tall fescue based mixture would be recommendable for farm who considering productivity and timothy based mixture would be recommendable for considering forage quality in middle areas of Korea.
This study was conducted to evaluate on agronomic characteristics, forage quality and dry matter (DM) yields of mugwort (Artemisia princeps Pamp.) collected different region at Seongju in Kyeongbuk from 2014 to 2015. The experiment was arranged in randomized complete block design with three replications. Mugwort was planted on 17th March, 2014 and harvested on 13th September, 2014 and on 25th May and 9th September, 2015. DM yields of Dalsung(1), Seongju B.(1), Dalsung(2) and Sajuarissuk were 17.3, 16.8, 16.7 and 16.7(MT ha⁻¹), respectively and the DM yields of those were higher (P<0.05) than the other mugworts in 2014. In 2015, DM yields of Dalsung(1), Dalsung(2), Seongju B.(1), and Sajuarissuk were 19.5, 19.3, 18.4 and 18.4(MT ha⁻¹), respectively and DM yields of those were higher (P<0.05) than the others. DDM(digestable dry matter) content of mugworts was a range of 56.4 to 60.8% and that of Sajabalssuk, 60.8% was the highest. Seongju B.(1) 58.8% was higher than Seongju B.(2) 56.4% but there were no difference among the Dalsung(1) 58.4%, Dalsung(2) 58.1%, Sajuarissuk 57.7% and Yeongcheon. The result of this study indicated that Dalsung(1), Dalsung(2), Sajuarissuk and Seongju B.(1) would be recommendable for forage production.
This experiment was conducted to comparison study on the productivity for certified varieties of import adaptability of silage corn in Pyeongchang area. Total eight varieties (Gangpyeongok, 31N27, 32P75, 32W86, P3156, P3394, DK 689 및 DK 729) were evaluated. The experimental design was 8 treatment of randomized block with three replications. Corn varieties were cultivated in experimental field of Pyeongchang campus, SNU from 1 May to 2 September, 2015 and plot size was 15㎡. Plant height of 32W86 and ear height of Gwanpyeongok was the highest (p<0.05). Tasseling and silking date was 27 July-3 August and silking occurred after 1-3 day of tasseling. Average day to silking was 92 days and that of 31N27 variety was short (p<0.05). The varieties of DeKalbo Company (DK 689 and DK 729) required more times to silking. Average GDD (growth degree day) of eight varieties was 1,023℃ and P3352 was the lowest GDD. In the trials of resistance evaluation, P3394 was strong in disease, P3156 was the highest in insect. All varieties did not show the lodging and variety of DK 729 showed the highest stay green score (p<0.05). Average dry matter content was 30.77%, it showed higher trend in DM. 32W86 was the highest DM content among the varieties, but there was no significant difference among varieties (p>0.05). The weight per ear was the highest in 32W86 and the lowest in Gwanpyeongok. The ration of ear to whole plant was higher in 32W86 and P3394, but it was not found the significant difference (p>0.05). Average yield of fresh and DM was 59,017 and 13,476 kg/ha, respectively. DK 689 showed higher DM and TDN yield than others, but there was not significant difference (p>0.05). According to results, the difference of productivity was not found among certified variety of import adaptability of silage corn. The varieties Gwanpyeongok, 32W86 and 32P75 would be recommendable in Pyeongchang area for stable cultivation.
본 시험은 2013년부터 2014년까지 전국 3개 지역 (전남 구례, 경북 상주 및 충남 천안)에서 이탈리안 라이그라스 품종의 생육특성과 사초생산성을 평가하였다. 시험설계는 품종을 처리로 하여 7개 품종을 3반복의 난괴법 배치로 하 였다. 품종은 ‘코윈어리’, ‘플로리다 80’, ‘연봉1호’, ‘연봉2 호’, ‘연봉3호’, ‘계명1호’, 및 ‘계명2호’ 공시하였다. 이탈리 안 라이그라스의 파종의 경우 전남 구례는 2013년 10월 4 일, 경북 상주는 10월 8일, 충남 천안은 10월 3일 파종하 였다. 한편 수확시기는 품종의 평균 출수기로 전남 구례와 경북 상주는 2014년 4월 26일에 수확하였으며, 충남 천안 은 4월 24일에 수확하였다. 공시한 7품종은 내병성, 내충성 및 내한성은 품종간에 차이가 없었으나 내도복성은 공시품 종 모두 약하였다. 전국 3개 지역에서 ‘연봉1호’, ‘연봉2호’ 및 ‘계명1호’의 출수기가 다른 품종보다 빨랐다. 출수기가 빠른 조생종 이탈리안 라이그라스는 건물률이 높고 초장도 다른 품종보다 높았다. 또한 조생종은 생초수량과 건물수 량도 다른 품종보다 많았다. 본 시험결과를 볼 때 숙기가 빠른 품종은 다른 품종에 비하여 초장이 높고, 건물률, 생 초수량 및 건물수량이 많은 것으로 평가되었다. 따라서 숙기가 빠르고 사초 생산성이 우수한 조생종 이탈리안 라이 그라스가 2모작체계에 유리할 것으로 판단된다.
본 시험은 2013년부터 2014년까지 경북 성주에서 여름 파종 수수류 교잡종의 생육특성, 품질 및 수량성을 평가하기 위하여 실시하였다. 시험설계로 품종을 처리로 한 6처리 3반복으로 배치하였다. 파종기는 2013년과 2014년 7월 31일에 조파하였고 수확은 2013년 11월 3일과 2014년 11월 5일에 하였다. 출수기는 2년 평균이 sordan79 10월 5일 sprint 10월 8일 SX17 10월 9일 순으로 조사되었고, 2013년 수수류 교잡종의 DM수량은 SX17, Sordan79 및 Sprint가 각각 24.2, 23.9 및 23.4톤/ha으로 SS405, PACF8350 및 Sugar grazer 21.5, 20.6 및 20.5톤/ha 보다 높았으며(p<0.05), DDM수량 역시 비슷한 경향을 보였다. 2014년 DM수량은 SX17, Sordan79 및 Sprint가 20.8, 19.3 및 20.0톤/ha로 다른 3품종 보다 높았으며(p<0.05), DDM수량 역시 비슷한 경향을 보였다. ADF와 NDF의 함량은 비교적 낮았으며 반면에 DDM 함량은 높아 사료가치가 우수하였다. 본 시험의 결과에 의하면 여름 파종 시 전통형(출수형) 수수-수단그라스 교잡종 SX17, Sordan79와 수단그라스-수단그라스 교잡종 Sprint가 늦은 개화형(비출수형) 수수-수단그라스 교잡종 PACF8350이나 수수-수수교잡종 SS405와 Sugar grazer 보다 수량측면에서 남부지방에서 유리할 것으로 생각된다.
하천부지에서 이탈리안 라이그라스(IRG)와 월년생 두과작물을 혼파하여 사초 생산성과 토양 특성을 조사하였다. 안산천 하천부지에서는 이탈리안 라이그라스와 헤어리베치의 혼파조합이 다른 조합보다 생초, 건물 및 수량이 가장 많았다. 이탈리안 혼파조합의 수확 시 건물률도 헤어리베치 조합이 가장 높았다. 혼파조합의 사료가치 비교에서 헤어리베치 조합이 조단백질 함량은 높았으나 TDN 및 비섬유성탄수화물(NFC) 함량은 다른 처리구에 비하여 낮았다. 따라서 질소 고정능력이 우수한 헤어리베치 조합이 다른 조합보다 토양의 전질소(TN) 함량이 높았다. 반면 토양의 유기물 함량은 유채 조합이 가장 높았으며, 토양의 유효인산 함량은 크림손 클로버 조합이 높았다. 토양의 CEC 함량은 이탈리안 라이그라스와 헤어리베치 조합은 우수하였다. 이상의 결과를 종합해 볼 때 비료를 시용하지 못하는 하천변에서 월동 사료작물을 재배할 때 이탈리안 라이그라스와 헤어리베치의 혼파조합이 다른 혼파조합보다 사초생산성이 높아 토양의 질소와 인 제거에 의한 하천 수질 개선에 효과가 좋은 것으로 판단되었다.
본 시험은 2010년부터 2012년까지 경북 성주에서 2모작 작부체계에 알맞은 다수성이며 조숙성인 콤먼베치의 품종을 선발 할 목적으로 헤어리베치 Cold green, 콤먼베치Maxivesa, Wild common, Rasina, Morava 및 Blanchefleur의생육특성, 건물수량 및 사초품질을 평가하였다. 시험설계는품종을 처리로한 6처리 3반복의 난괴법으로 배치하였다.파종은 2010년 10월 11일과 2011년 10월 3일에 하였으며수확은 2011년 5월 4일과 2012년 5월 10일에 실시하였다.가을의 초형은 Wild common은 부복형이었으며 다른 품종들은 반직립형이었다. 유식물의 활력은 다른 품종들에 비해 Wild common이 다소 낮았다. 내한성은 Cold green과Wild common이 우수했으나 다른 콤먼베치 품종들은 낮았다. 개화기는 Cold green이 4월 22일로 가장 빨랐으며Wild common은 4월 26일 Rasina와 Blanchefleur가 4월 28일이었으며 Maxivesa가 5월 17일이었다. 1년차 시험에서건물수량은 Cold green은 다른 5품종보다 수량이 높았으며 (p<0.05), Wild common은 나머지 4품종보다 많았으며(p<0.05), Maxivesa와 Blanchefleur는 Rasina와 Morava보다높았다 (p<0.05). 2년차 시험에서도 건물수량은 Cold green은 다른 5품종 보다 높았으며 (p<0.05), Wild common은 다른 4품종보다 높았다 (p<0.05). 일반적으로 베치의 CP 함량은 높았고 섬유소함량은 낮았다. 가을 파종 콤먼베치의 품종은 개화기가 빠르며 내한성이 강한 Wild common이 좋을 것으로 생각된다.
본 시험은 수수× 수단그라스 교잡종 품종의 생육특성, 사초수량 및 품질을 비교하기 위하여 2009년 경북 성주와 충남 천안에서 수행하였다. 시험구 배치는 8처리 3반복의 난괴법 배치로 하였다. 시험구의 처리는 품종으로 하였으며, 공시한 품종은 ‘Sordan79’, ‘SX17’,‘Honey chew’, ‘Honey grazer’, ‘G7’, ‘Jumbo’,‘Green star’ 및 ‘GT56’를 공시하였다. 2지역 모두에서 출수형 4품종은 출수를 하였다. 그 외생육특성에서는 품종 간에 차이가 없었으나 출수형과 BMR 품종이 다른 품종보다 당도가 높았다. 건물률 및 초장은 출수형이 비출수형 보다 높았다. 생초수량, 건물수량 및 TDN 수량도출수형이 비출수형 보다 높았고 BMR 품종은다른 품종보다 적었다. 조단백질과 조회분 함량은 출수형 품종이 비출수형 품종보다 많았으나 비섬유성탄수화물(NFC)은 상반된 결과를보였다. BMR 품종의 ADF 및 NFC 함량은 다른 폼종 보다 작았다. 이상의 결과를 종합해볼 때 출수형이 비출수형에 비하여 사초 생산성이 우수하고, 품질은 비출수형과 BMR 품종이 우수한 경향을 보였다. 그리고 BMR 품종은당도가 높고 ADF 함량이 낮아 사초 품질 이우수한 것으로 판단되었다.
본 시험은 2010년부터 2012년까지 3년동안 경북 성주 계명문화대학 실험목장에서 이탈리안 라이그라스 품종의 생육특성 및 건물수량을평가하기 위하여 실시하였다. 시험설계는 조중생종은 품종을 처리로 12처리 3반복, 중만생품종은 품종을 처리로 10처리 3반복 난괴법으로 배치하였다. 1년차 시험은 2010년 10월 12일에 파종하여 조중생종은 2011년 4월 29일,중만생종은 동년 5월 4일에 수확하였고, 2년차시험은 2011년 10월 3일에 파종하여 조중생품종은 2012년 5월 5일 중만생종은 동년 5월 12일에 수확하였다. 조중생 품종의 건물수량은Yeonbong3, Seongnong, Winter Hawk, Pride 및Kowinnearly 품종이 각각 9,850, 9,778, 9,486,9,363 및 9,267 kg/ha 순위였으며 이들 품종 간에 수량 차이는 없었으나 다른 7품종 보다 높았다(p<0.05). 중만생 품종의 건물수량은 Tetragold,Hwasan 101, Jumbo, Sungrazer, Master, Select및 KB Royal이 각각 9,542, 9,492, 9,103, 8,981,8,903, 8,870 및 8,681 kg/ha 순위였으며 이들품종 간에 수량 차이는 없었으나, 다른 3품종보다는 높았다(p<0.05). 내한성은 중만생 품종중에서 Hwasan 101가 다른 품종보다 높은 경향을 보였다. 본 시험의 결과에 의하면 조기수확 시 건물수량 측면에서 조중생 품종이 유리할 것으로 생각된다.
In order to ensure good animal health and performance, it is essential to produce forages with high feeding value and good hygienic quality. However, huge amounts of forages consumed by ruminants are contaminated with mold prior to harvest or during storage as hay, straw or silage. These mold can grow in forages only when nutrients are available, correct temperature exist, oxygen is present, and unbound water is available. Fungal 'species can be divided into two groups: field fungi and storage fungi. Field fungi invade the forages while the crop is still in the fíeld, require high moisture conditions, and are such as species of Fusarium, Alternaria, Clodosporium, Diplodia, Gibberrella and Helminthosporium. Storage fungi invade forages during storage and need less moisture than fíeld fungi. These such as species of Aspergillus and Penicillium usually do not occur any problem before harvest. Mold growth can spoil the nutritional aspects of the forages and also results in secondary metabolites that are highly toxic to animal, humans and plants. Moldy feeds are less palatable and may reduce dry matter intake. This, in turn, leads to a reduction of nutrition intake, reducing weight gains or milk production. Performance losses of 5 to 10 percent are typical with moldy feeds. Mycotoxins are toxic substances produced by fungi (molds) growing on crops in the field or storages. While greater than 400 mycotoxins have been chemically identified, the biological or veterinary medical impact of only several mycotoxins is known. Mycotoxins have attracted considerable attention as potential causes for poor performance and health disorders in domestic livestock. They can be carcinogenic, hepatotoxic, hematotoxic, immunosuppressive, estrogenic, or mutagenic. So, feeding moldy forages has adverse effects on animal health and milk consumers. AIso, this author reported that rice straw hay was contaminated mycotoxigenic fungi such as Penicillium roqueforti and Fusarium culmorum in Korea. Therefore, it is an urgent need to develop an improved post harvest storage method to reduce nutrient loss and mycotoxin contamination of forages, which will have a positive impact on human health.
본 시험은 산양유 생산을 위해 유가사료를 이용하여 유산양의 적정 에너지 및 단백질 공급 수준과 조농비율을 결정하기 위하여 비유중기 Saanen종 유산양 4두(57.5土10.8 kg BW)를 이용하여 4x4 라틴방각법으로 실시하였다. 대사에너지 공급수준과 단백질 공급수준을 10.59 (T1), 10.14 (T2), 9.45 (T3) 및 8.75 (T4) MJ/kg과 11.90 (T1), 12.73 (T2), 15.19 (T3) 및 16.60% (T4)로 달리하였으며, 조농비율은 49:51 (T1), 59:41 (T2), 74:26 (T3) 및 90:10 (T4)의 네 처리구로 나누었다. 사료 섭취량 및 체중은 모든 처리구 사이의 유의한 차이가 없었다. 유량은 T3구에서 가장 높았으며, T2 및 T4구와 비교 하여 유의하게 높게 나타났다(p<0.05). 유지방 함량과 생산량은 T4구에서 다른 처리구와 비교하여 가장 낮았다(p<0.05). 유단백질과 유당 생산량은 T1 (61.29 및 70.95 g/일)과 T3 (60.52 및 75.82 g/일)구에서 T2 (50.49 및 59.64 g/일)와 T4 (52.49 빛 59.82 g/얼)구와 비교하여 유의하게 높게 나타났다. 결과적으로 유산양의 유생산성을 극대화시커기 위해서 에너지 공급수준은 최소 9 MJ/kg 이상과 단백질 공급수준은 최소 15% 이상을 공급해 주어야할 것으로 기대된다.
최근에 청보리 사일리지는 국내에서 가장 많이 이용하는 조사료이지만 유기축산을 위한 유기조사료의 생산과 품질에 관한 연구는 미흡한 실정이다. 따라서 본 시험은 유기 청보리 사일리지의 적정 수확시기를 구명하고, 사일리지 품질 향상을 위하얘 예건과 싸라기를 첨가하여 사일리지를 펑가하였다. 시험구 배치는 12처리 3반복의 분할구 배치법으로 주구는 수확시기로 출수기, 유숙기 및 황숙기를 두였으며, 세구는 무처리, 예건, 싸라기 10%, 싸라기 15%를 두었다. 수확시 건물함량은 출수기, 유숙기 및 황숙기가 각각 12.8%, 21.9% 및 29.8%로 증가하였다. 청보리의 건물수량은 출수기, 유숙기 및 황숙기가 각각 10,346, 15,819 빚 18,336 kg/ha였으며, TDN 수량은 6,288, 9,550 및 10,178 kg/ha였다. 유기 사일리지의 pH는 출수기, 유숙기 및 황숙기가 각각 4.70, 4.03 및 5.37로 유숙기가 가장 낮았다. 청보리의 수확시기가 늦어 짐에 따라 조단백질, 조지방, NFC 빚 TDN 함량은 감소하였으나, NDF 및 ADF 함량은 증가 하였다. 그러나 조회분 함량은 유숙기가 가장 낮았다. 사일리지의 예건과 싸라기의 첨가는 조회분, NDF 및 ADF 함량을 감소시키고, NFC와 TDN 함량은 증가사켰다. 사일리지의 건물 소화율은 수확시기가 늦어짐에 따라 감소하였으며, 예건과 싸라기 첨가에 의하여 건물소화율이 증가하였다. 유숙기가 다른 수확시기보다 젖산과 총유기산 함량은 높고 낙산 함량이 낮아 총유기산 중 젖산함량이 가장 높았다. 예건과 싸라기 첨가에 의한 젖산 함량 증가 효과는 출수기가 다른 수확기보다 효과가 있었다. 이상의 결과를 종합해 볼 때 유기 청보리 사알리지 제조를 위한 수확적기는 유숙기 이었으며, 예건과 싸라기 첨가에 의하여 청보리 사일리지의 품질을 향상시킬 수 있었다.
The main nutritional problem of sorghum×sudangrass (sudangrass) silage is low quality and dry matter (DM) contents. This experiment was conducted to evaluate whether agricultural byproducts addition of sorghum×sudangrass silage increases DM content and forage quality of the silage. Sorghum×sudangrass silage with added byproducts had low pH values, however sorghum×sudangrass silage (control) had a high pH value because of its high moisture content. Silage added with byproduct had lower acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents than control silages, while its non-fiber carbohydrate (NFC), and total digestible nutrients (TDN) and lactic acid contents showed the opposite results. Silages added with crushed rice and green grain of rice were higher in lactic acid content than othor treatments as well as high DM, NFC, and TDN contents. Silage added with crushed rice and green grain of rice can be recommended as the most effective treatment for increasing forage quality and DM content of sorghum×sudangrass silage.
Although winter rye is now widely grown as a silage crop in Korea, but silage quality of the winter rye produced from farmer's fields have not been published. Therefore, this experiment was conducted to evaluate forage quality of winter rye which was participated in Forage Quality Contest in 2008. These data were classified by resign, forage production, added inoculants, planting date, and harvest date. Difference on lactic acid of rye silage was detected in forage production (p<0.01), however, there were no significant differences among the rye silage tested. The moisture and lactic acid were significant differences in dry matter yield of rye silage. There is all the difference between silage added inoculants and control. The pH, ash, CP, NDF and ADF of rye added with inoculants were higher t㏊n those of control silage, however, the TDN and lactic acid were increased in silage added with inoculants. The ash and CP were significant differences in planting date, but lactic acid was significant differences in harvest date. This experiment indicates t㏊t lactic acid of silage was good indicator for evaluation of rye silage. Differences in forage quality were also observed among winter rye silage. Therefore, nutritional quality as well as lactic acid is important in silage quality contest of winter rye silage.
Although whole crop barley are now widely grown as a silage crop in Korea, but silage quality of the whole crop barley produced from farmer's fields have not been published. Therefore, this experiment was conducted to evaluate forage quality of whole crop barley which was participated in Korean quality contest in 2008. These data were classified by region, forage production, added inoculants, planting date and harvest date. Difference on lactic acid of barley silage was detected in the region (p<0.05), however, there no significant differences in other chemical composition. The moisture and lactic acid were significant differences in dry matter yield of barley silage. There is all the difference between silage added inoculants and control. Differences between planting dates in ash and crude protein (CP) were detected in barley silage (p<0.05). From comparison within harvest date, lactic acid ㏊d significant differences among barley silage. Differences in forage quality were observed among whole crop barley for silage. Therefore, nutritional quality as well as lactic acid is important in silage quality contest of whole crop barley.
본 시험은 월년생 콩과작물의 사초생산성, 품질 및 토양개량효과를 구명하기 위하여 천안 연암대학 실습농장에서 실시하였다. 본 시험은 콩과작물을 크림손 클로버(Trifolium incarnatium L.), 레드 클로버(Trifolium peratense L.) 및 자운영(Astragalus sinicus L.)'Common'을 공시하였다. 자운영은 4월 20일에 개화하고 크림손클로버는 4월 30일 개화하였으나, 레드 클로버는 수확시까지 개화를 하지 않았다