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[PE-0029] Investigation of Alfalfa Cultivars Forage Performance in Central Region of South Korea
Yowook Song(Yowook Song),Sang-Hoon Lee(Sang-Hoon Lee),Md Atikur Rahman(Md Atikur Rahman ),Hyung Soo Park(Hyung Soo Park),Jae Hoon Woo(Jae Hoon Woo),Bo Ram Choi(Bo Ram Choi),Eun A Lim(Eun A Lim),Ki-Won 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
Song, Yowook,Lee, Sang-Hoon,Rahman, Md Atikur,Lee, Ki-Won The Korean Society of Grassland and Forage Science 2021 한국초지조사료학회지 Vol.41 No.3
Intercropping cereals with legumes is known to improve forage production and crude protein yield. Sorghum × sudangrass hybrids (SSH) have excellent dry matter content and high cultivation temperatures. In this study, we investigated the growth characteristics, forage productivity, and feed value of intercropping SSH with different legumes in rice paddy fields. We used five treatments in this study SSH monocropping and four intercropping treatments of SSH with, lablab, cowpea, sesbania, and two cultivars of soybean (Chookdu 1 and 2). SSH plant height was not significantly different between the monocropping and intercropping treatments. However, the plant heights of lablab, cowpea, and sesbania were significantly higher than those of the two soybean cultivars. The total dry matter yield (kg/ha) was significantly higher in SSH monocropping than in intercropping; among the intercropping treatments, the one with SSH and Chookdu 2 yielded the highest total dry matter yield. The SSH feed value was significantly different between the monocropping and intercropping treatments, although there were no differences between the intercropping treatments. Among the intercropped legumes, lablab showed the highest neutral detergent fiber and acid detergent fiber contents, and cowpea had the highest crude protein content. These results reveal that intercropping SSH with legumes in paddy fields could be a promising cultivation technique to maintain stable forage productivity.
Song, Yowook,Kim, Dong Woo,Kim, Jeongtae,Fiaz, Muhamad,Kwon, Chan Ho The Korean Society of Grassland and Forage Science 2017 한국초지조사료학회지 Vol.37 No.2
Corn is basal forage for livestock species in Republic of Korea but it lacks protein and needs nitrogenous fertilizer. This study was designed with main objective to achieve optimum growth, yield & nutritive value of forage for livestock through implementing corn-soybean intercropping strategy at 17 different places under Korean condition. Two treatments; corn as monocrop (control treatment) and corn-soybean intercrop were compared under Randomized Block Design from $28^{th}$ May to $8^{th}$ October, 2015. Each treatment had three replicates in each block, whereas seventeen different places were considered as blocks. Data were analyzed through SAS-9.1.3 software. Difference between two treatment means was tested through T-test. Findings depicted that intercropping pattern could not influence (P>0.05) corn plant & ear height, corn lodged stalk No. and corn stalks number. However, corn-soybean intercropping enhanced (P<0.05) forage productivity in terms of total fresh yield ($16.4{\pm}0.7^b$ vs. $19.9{\pm}0.7^atons\;ha^{-1}$), total dry matter yield ($5.38{\pm}0.25^b$ vs. $6.41{\pm}0.31^atons\;ha^{-1}$) and total digestible nutrients yield ($3.94{\pm}0.17^b$ vs. $4.59{\pm}0.21^atons\;ha^{-1}$). Dry matter percentage in corn stalks and corn ears was not different (P>0.05) between two treatments. It was concluded that corn-soybean intercropping strategy was promising technique in enhancing forage productivity though positive symbiotic relation between two crops.
Song Yowook,Lee Sang-Hoon,Woo Jae Hoon,Lee Ki-Won 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.1
This study evaluated the growth characteristics, forage yield, and feed value of a maize–soybean intercropping system under different fertilizer levels. Maize–soybean intercropping was conducted from 2018 to 2021 in Cheonan, Republic of Korea. The control (210 kg/ha of N:P:K (21:17:17)) was set based on monoculture maize fertilization, and six treatments by increasing or decreasing the N, P, or K levels by 20% (2019) or 50% (2020–2021) were designed. In 2019, there was no significant difference in forage productivity between the maize–soybean intercropping systems and the control. The maize dry matter yield in 2020 in T-1 (50% increase in N) was higher, at 14,125 kg/ha; however, it was not significantly different to the control. The forage productivity of intercropped soybean in treatments with low N fertilization was higher. Therefore, intercropping with soybean can reduce the need for N fertilization as it can fix atmospheric N. There was a significant difference between the maize and soybean feed values. However, the results were not correlated with the fertilization level. In 2021, the forage productivity in treatments with no N fertilization (T-4, T-5, and T-6) was poor. However, treatments (T-1, T-2, and T-3) with 50% N fertilizer application and sufficient P and K produced equal dry matter yields to the control. In conclusion, maize–soybean intercropping achieved excellent forage productivity and feed value, despite a 20–50% reduction in the application of N fertilizer due to the positive effects of intercropping.
( Yowook Song ),( Muhammad Fiaz ),( Dong Woo Kim ),( Jeongtae Kim ),( Chan Ho Kwon ) 한국축산학회 2019 한국축산학회지 Vol.61 No.4
The aim of this study was to evaluate different herbicides for optimum growth, yield and nutritive value of corn-soybean mixed forage under randomized complete block design. The experimental site was selected and divided equally into 3 blocks. Each block was further divided into 5 plots that each plot had 15 square meter space (3 × 5). Five herbicidal treatments were randomly applied over 5 plots and herbicides were used under 5 herbicidal treatments, viz. 1) No herbicide (control); 2) Pendimethalin; 3) Linuron; 4) S-metolachlor and 5) Ethalfluralin. The collected data were analyzed using ANOVA through SAS 9.1.3 software. The results indicated that growth characteristics were not influenced (p > 0.05) by any herbicide. However, arithmetically corn stalk height was highest in the field of Pendimethalin treatment, whereas highest soybean height was found in the field of S-metolachlor. Arithmetically dry matter (DM) yield was increased with herbicidal treatments as compared to that of control treatment. Relatively highest DM yield (130%) was recorded in the treatment of Ethalfluralin followed by Pendimethalin (126%), S-metolachlor (126%) and Linuron (108%) as compared to that of control treatment. The weed emergence was significantly reduced in all herbicidal treatments as compared to that of control (p > 0.05), but the difference among herbicidal treatments was non-significant. It was concluded that weed emergence can be effectively controlled by use of any tested herbicide. However, optimum DM yield can be achieved through using herbicides; Ethalfluralin, Pendimethalin and S-metolachlor.
Song Yowook,Lee Sang-Hoon,Woo Jae Hoon,Lee Ki-Won 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.3
This study aimed to evaluate the forage production, nutritional value, soil chemical properties, and rhizosphere microorganism composition of maize–legume intercropping systems in fallow paddy felds. Before seeding, the felds were sprayed with 1000 kg ha−1 of nitrogen composite fertilizer (NPK: 21-17-17). From 2020 to 2021, maize was intercropped with seven diferent legume cultivars at the National Institute of Animal Science, Cheonan, Republic of Korea. Of the seven legumes, the intercropped lablab (Lablab purpureus [L.] Sweet) and cowpea (Vigna unguiculata L. Walp) showed the greatest plant heights because the maize plants supported their climbing habit. The forage productivity of the intercropped soybean cultivars, Chookdu 1 and 2, lablab, and cowpea, was relatively high compared with those of the other legumes. Chookdu 1 and 2 showed higher forage productivity in monoculture than when intercropped. When intercropped with maize, the Daewon and Daepung soybean cultivars showed the lowest neutral detergent fber and acid detergent fber contents and the highest crude protein in 2020. However, the forage productivity of Daewon and Daepung was low, indicating unsuitability for intercropping with maize in paddy felds. The microorganism composition in the root rhizosphere showed a higher proportion of Proteobacteria under legume than maize cultivation. Proteobacteria were substantially more abundant in soils intercropped with lablab than in the lablab monoculture. Maize and cowpea appeared to be the best intercropping combination considering forage productivity and feed value. However, the Chookdu 1 and 2 cultivars and lablab also showed potential for intercropping with maize in paddy felds.