• Proceedings of the Korean Society of Crop Science Conference
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• 2023.04a
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• pp.120-120
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• 2023

• Journal of the Korean association of regional geographers
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• v.10 no.2
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• pp.479-496
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• 2004

This study attempts to examine Egyptian agricultural development with regard to the social and political changes in the Egypt, and tries to explore the patterns of major crops and those spatial distribution nowadays. Also, land reclamation processes and farming activities are explained. Agricultural development in Egypt has been considerably affected by historical international trade, and those crops such as cotton and sugar cane have been especially protected and controlled as strategic crops by the Egyptian governments. The issues of land ownership have been varied with political environments by periods, but the controls to the strategic crops have been consistently maintained to a degree though some variations. since the 1990s, national liberalization programs also caused to change the agricultural policies which have affected the adjustments of crop production and land use. Spatial distribution of major crops and farming activities are examined in relation to natural environments by Delta, Middle and Upper Egypt, desert areas. The projects of land reclamation after 1952 are evaluated with the effects of government intervention, and the actors in use of the reclaimed lands are investigated.

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.106-106
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• 2017

The soybean [Glycine max (L.) Merr.] is one of the most important crop resources worldwide as food and forage. It is also important and valuable that to hold crop resources to have high genetic diversities. Recently, a core collection has been constructed in many plants to preserve the genetic resources of various plants. A core collection is small population to represent the genetic diversity of the total collection, and is of strategic importance as they allow the use of a small part of a germplasm collection that is representative of the total collection. Here, we developed the core collection consisting of 816 accessions by using approximately 180,000 (180K) single nucleotide polymorphisms (SNPs) developed in previous study. In addition, we performed genetic diversity and population structure analysis to construct the core collection from entire 4,392 collections. there were excluded sample call rates less than 93% and duplicated samples more than 99.9% according to genotype analysis using 180K SNPs from entire collections. Furthermore, we were also excluded natural hybrid resources which Glycine max and Glycine soja are mixed in half through population structure analysis. As a result, we are constructed the core collection of genetic diversity that reflects 99% of the entire collections, including 430 cultivated soybeans (Glycine max) and 386 wild soybeans (Glycine soja). The core collection developed in this study should be to provide useful materials for both soybean breeding programs and genome-wide association studies.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.49 no.3
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• pp.261-270
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• 2004

The study was designed to forecast and derive future core technologies using Delphi method in Korea agriculture. Based on the technologies, agriculture in Korea will be expected to improve as a core and strategic industry producing high value added in 21 century. Questions were given to specialists by each technology in order to survey importance, realization time, level of R&D in Korea and the leading country, leading group of R＆D, effective policy, etc. for each technology. The survey for Delphi was confined to the specialists in the area of crop production. The 44 core technologies were derived and 39 specialists answered the survey.

• International Journal of Industrial Entomology and Biomaterials
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• v.18 no.2
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• pp.69-75
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• 2009

Daba ecorace of Antheraea mylitta Drury (Lepidoptera: Saturniidae), the semi domesticated Indian tropical tasar silkworm being reared outdoor; the egg and silk yields are dependent of genotype environment interaction. The insufficient maintenance and multiplication of its P4 seed stock need a coherent as well as scientific strategy to safeguard breed potential, being commercially applied ecorace. The sort-out lines of P4 stock studied over five generations highlighting on commercial trait up gradation suits for a tropical crop season, revealed enhanced performance. The line with high pupal parents (T2) shown improved fecundity (12.9%) and the line with high shell parents (T3) recorded higher shell weight (40.0%) and silk ratio (24.1%). While, the line of high pupal female and high shell male (T4) reveal enhancement in fecundity (9.0%), egg hatching (14.1%), shell weight (50.0%), silk ratio (35.2%) and absolute silk yield (52.0%) indicating the need and role of varied basic seed stock lines. The approach could improve economically vital egg fecundity and cocoon shell weights besides balancing them in same line for commercial operation. The progressive show of lines (T1 to T4) along successive generations (G1 to G5), in spite of passing through seed crop (Jul-Aug) and commercial crop (Sep-Nov) seasons emphasize their compatibility. The study infers that the strategic plan of combining preferred parental phenotypes, methodical selection for desired commercial trait(s) through generations with best possible genotype environment interaction has enriched P4 stock with elevation in needy trait(s) besides assuring choice of suitable lines for seasons and regions and timely replenishment of basic seed of Daba ecorace.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.11
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• pp.133-142
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• 1972

1. The purpose of this study is to present effective way of increasing agricultural trade through investigating agricultural trade aspects of the south-east asian countries. 2. As the main industry of all the countries except Japan is agriculture, agricultural products occupies large part of products exported in these countries. However, due to the low level of technology and shorts of products to be exported, the traded amount of agricultural products is not so much. 3. In view of industralization, these countries are similiar to Korea. Therefore, Korea can hardly expect to increase trade amount only with the traditional agricultural products, for these countries emphasis on the import of capital goods. 4. The climate and the level of production technology of these countries differ greatly respectively. In order to increase exports, Korea has to develop strategic goods considering the facts mentioned above.

• Journal of Environmental Science International
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• v.22 no.9
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• pp.1171-1180
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• 2013

Recent climate change has led to fluctuations in agricultural production, and as a result national food supply has become an important strategic factor in economic policy. As such, in this study, panel data was collected to analyze the effects of seven meteorological elements and using the Lagrange multipliers method, the fixed-effects model for the production of five types of food crop and the seven meteorological elements were analyzed. Results showed that the key factors effecting increases in production of rice grains were average temperature, average relative humidity and average ground surface temperature, while wheat and barley were found to have positive correlations with average temperature and average humidity. The implications of this study are as follow. First, it was confirmed that the meteorological elements have profound effects on the production of food crops. Second, when compared to existing studies, the study was not limited to one food crop but encompassed all five types, and went beyond other studies that were limited to temperature and rainfall to include various meterological elements.

• Asian-Australasian Journal of Animal Sciences
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• v.12 no.6
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• pp.901-903
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• 1999

Twenty-four multiparous crossbred Friesian dairy cows (60-90 days in lactation) were randomly assigned into a $2{\times}2$ factorial arrangement in a randomized complete block design. Factors were two levels of concentrate supplementation (1:2, high vs 1:1.2, very high; concentrate:milk yield) and two levels of high-quality feed block (HQFB) supplementation (non vs ad libitum block licking). Ruzi grass (Brachiaria ruziziensis) was fed as a roughage throughout the 70 day feeding trial. High level of concentrate fed group resulted in higher roughage and HQFB intakes, compared with very high concentrate supplemented group. HQFB supplementation tended to increase roughage intake and significantly improved milk yield (2 kg/hd/d in high concentrate supplementation) and quality (% fat) which resulted in higher economical return. HQFB was recommended to be used as a strategic supplement in lactating dairy cows especially when fed on low-quality roughages or crop residues.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.286-286
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• 2022

The properties of starch play an important role in determining the palatability of rice. In addition, the gelatinization temperature (GT) of rice starch is an important factor in determining the quality of rice because it is related to the cooking time and texture of rice. For the development of high-quality rice, it is important to understand the genetic basis of palatability-related traits, and QTL analysis is an effective method to explain the genetic basis of variation in complex traits. QTL mapping related to alkali digestion value (ADV) of brown and milled rice was performed using the 120 Cheongcheong/Nagdong double haploid (CNDH) line. As a result, 12 QTLs related to ADV were detected, and 20 candidate genes were selected from the RM588-RM1163 region of chromosome 6 through screening by gene function analysis. The comparison of the relative expression level of candidate genes showed that OsSS1q6 is highly expressed in CNDH lines with high ADV in both brown rice and milled rice. In addition, OsSS1q6 has high homology with starch synthase 1 protein, and interact with various starch biosynthesis-related proteins, such as GBSSII, SBE, and APL. Therefore, we suggest that OsSS1q6 identified through QTL mapping could be one of the various genes involved in the GT of rice by regulating starch biosynthesis. This study can be used as basic data for breeding high-quality rice and provides a new genetic resource that can increase the palatability of rice.

• Proceedings of the Korean Society of Crop Science Conference
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• 1998.10a
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• pp.391-414
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• 1998

Rural information sector is a strategic planning of agriculture in 21st century for the advancement of agricultural competive power and quality of life to farmers. In order to advance the agricultural competency and quality of life, firstly, it is necessary that rural information sector should focus on the foundation of agriculture and rural information. Secondly, it should construct an area of function and item in application systems. Thirdly, it must Improve to culture of agriculture and rural information. It should be able offer a variety of educational information to help build a recognition and accommodation of value of agricultural information. The agriculture and rural information sector is so desirable that an organization should take exclusive responsibility to maintain the public property of it and to guard it from variable pressure groups. Therefore, to the uninformed mind, it is desirable to build and nurture KICAFF(Korea Information Center for Agriculture, Forestry & Fisheries) which is empowered in the information business- instead of the government. This is necessary for agricultural information system preservation because law and institution corresponds with role and function of the information/education system.