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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
KOREAN JOURNAL OF CROP SCIENCE
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Lee, Sang Chul
Volume & Issues
Volume 21, Issue 2 - Dec 1976
Volume 21, Issue 1 - Jun 1976
Selecting the target year
The Effects of the Growth and Yield of Paddy Rice in the Upland Cultivation
Sang-Hyun Yoon ; Yong-Jae Kim ; Won-Yul Choi ; Chang-Soon Ahn ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 1~8
Two paddy rices and two upland rices were cultivated both in the paddy-field and in the upland in order to find out the effects of the different cultural environments on the growth and yield of the four varieties. Three plots (standard fertilizer without irrigation, standard fertilizer with irrigation and nitrogen-increased fertilizer with irrigation) were set in the upland and one plot (standard fertilizer with conventional water control) was set in the paddy-field. The weight of brown rice of paddy rices was higher in the paddy-field than in the upland, while that of upland rices was higher in the upland. The heading-date of paddy rices was later about a week in the upland than in the paddy-field. The maturity ratio and the weight of 1, 000 grains of upland were higher and heavier than those of paddy rices in both cultural conditions. The results show that it is very desirable for the culture of paddy rices to be cultivated under the upland condition, on the view point of its yield and quality compared with those of upland rices.
The Effects of the Various Fertilizer Level and Drill-Seeding on the Growth and Yield of the Newly Bred Naked-Barley
Won-Yul Choi ; Kong-Yul Park ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 9~14
This experiment was conducted to find out the ., effects of various fertilizer level and Drill-seeding on the growth and yield of the two newly bred naked-barley varieties, Kwangsung and
the former that was bred for the first time in Korea in 1972, is resistant to winter and productive, and the latter that was also bred in Korea by radioisotope treatment in 1974, is of short-stem, early maturing and productive. The grain yield in Drill-seeding was 8 percent higher than that in Conventional seeding.
was more resistant to lodging and more adaptable to the amounts of the increased-fertilizer level than Kwangsung. In Drill-seeding,
is thought to be more suitable naked-barley variety than Kwangsung.
Germination and Growth of Sourgrass and its Competition with Forage Grasses
Jong-Yeong Pyon ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 15~19
Germination and growth of sourgrass, and its competition with improved pasture species, buffelgrass and guineagrass were studied. Optimum germination was obtained under light with alternating temperatures. Germination was stimulated by GA but greatly decreased as moisture .stress was increased. Sourgrass in pastures can be controlled through competition with buffelgrass or guineagrass.
Perennial Weed Control in Paddy Rice Fields (1) Effect of Various Plowing Depths in Autumn on Perennial Weed Control
Kil-Ung Kim ; Hyun-Ok Choi ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 20~23
Distribution of underground organs of perennial weeds in soil and ecological control measure were evaluated. Tubers of Cypers serotinus and Sagittaria pygmaea were mostly presented in a shallow depth of 0 to 5cm, however, Potamogeton distinctus's bulbs and Eleocharis kuroguwai's tubers were distributed in the soil at 10 to 20cm. A 20cm autumn plowing was, to some extent, effective to reduce Potamogeton distinctus. The herbicide, avirosan at 3kg/10a alone, was extremely effective in controlling Potamogeton distinctus.
Ecology of Some Perennial Weeds in Paddy Fields
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 24~34
The most troublesome perennials in the paddy fields in Korea, such as Cyperus serotinus, Potamogeton Franchetii, Sagittaria pygmaea and Eleocharis Kuroguwai, were studied about shape, aspects of ,germination, depth of development(under flooded and upland conditions), reproduction process and production amount. And these characters were compared with in these perennials.
Studies on the Varietal Differences of Tolerance to Cold Damage in Seedling Stage of the Rice Plant
Chung-Ik Cho ; Seong Kuk Bae ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 35~42
In Korea, two types of rice varieties are being cultivated widely, Japonica and Japonica-Indica cross. Generally speaking, the latter shows weak cold tolerance than the former and so brought about many problems in cultural practices. This study was conducted to investigate the effect . of various temperature conditions on rice seedlings growth, especially the contents of chlorophyll and the percentage of nitrogen. And the result obtained indicated the varieties of Japonica-Indica intend to weak cold tolerance than Japonica varieties.
Studies on the Improvement of RiceCultivation in the Ill-drained Paddy Field II. The Effects of Fertilizations and Planting Densities on Growth and Yield of Ricein the Underchannel Drainage
Yung-Seo Ku ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 43~51
Marine deposite soil was studied to evaluate morohological changes of paddy rice under subdrainage control. The content of organic and inorganic mate rial were low at high temperature in the mid-summer. This soil lacked air and accumulated more H
S. Thus rice root was rotted with high infection of virus and insect and yield was relatively low.
Display of Rice Leaf Base Colour in Early Hybrid Generations II. Distribution of C,A Complementary Genes in the Leading Cultivars
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 52~56
60 rice cultivars were surveyed for the posses of C and A complementary genes which is responsible to the anthocyan colouration. Most of Japonica derived cultivars belong to O group which do not have either C or A gene, and a few belong to C group which has C gene. Indica derived latest cultivars belong to A group which has A gene.
Studies on Procedure for Accelerating Generation Advancement in Wheat and Barley Breeding 1. Influence of Germination Forcing on Premature Seed, Vernalization Method and Nursing Condition on Generation Advancement of Barley Varieties in Greenhouse
Chang-Hwan Cho ; Yong-Wooong Ha ; Wan-Sik Ahn ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 57~64
Enforcing germination to the premature seed green vernalization under constant vitalux-A illumination and exposing to higher room temperature during ripening stage, were successively applied during wheat and barley raising for the sake of the accelerating generation advancement in greenhouse. By application of this method, the winter habit variety 'Buheung' required only 77 days for 1 generation and could raise 4.5 generations during one year. one year.
Studies on Physiological and Ecological Responses of Barley I. Growth Analysis of Barley Varieties under the Constant Temperature Condition
Chang-Hwan Cho ; Wan-Sik Ahn ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 65~70
To evaluate growth pattern of barley, dry matter productions of two barley varieties with different winter habits were compared under same temperature and day length conditions.
Statistical Genetic Studies on the Selection for Grain Characteristics of Malting Barley (Hordeum distichum L.)
Bong-Ho Lee ; In-Gul Lee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 71~81
This study was carried out to attain the selection information on grain characters of malting barley. Indirect selection, making use of information on grain thickness, seemed to be an effective method for the selection of 1, 000 grain weight, grain hull and grain yield which were directly affected by grain thickness. Grain yield which had a direct effect on grain, meal and protein content seemed to be an effective selection indicator for them, however, a better method is expected upon improvement of indirect effects of hull and grain yield.
Studies on the Mutation Breeding of Naked Barley I. A New Mutant Variety "Radiation No. 6" and Several Promising Mutant Lines by Radiation
Young-Sang Kim ; Don-Kil Lee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 82~86
'Radiation No. 6' the first mutant variety of naked barley in Korea was developed from Bangju as .a mother variety. The new variety was characterized by early maturity, short-culm and stablized high yield by the increased number of spikes. 'Radiation No. 6' was registered as a leading variety in 1974, .after 7 years since induction of mutation started.of mutation started.
Study of Soybean Culture and Analysis on the Chemical Composition of Soybean for Making Use of the Mountainous Uncultivated Land
Chang-Duck Lee ; Yoong-Nam Song ; Chun-Bae Kim ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 87~91
This study was undertaken to learn the over-all influence of fertilizer on soybean culture and the chemical composition of soybean in the reclaimed land. Treatments included five rates of N.P.K: 4.10.8, compost: 1, 000. N.P.K.: 4.10.8 + compost: 1, 000, N.P.K: 2.5.5 kg/10 are as well as unfertilized plot in the reclaimed land and N.P.K: 4.10.8 kg/10 are as a check plot of the cultivated area. The yield of green plant above-ground, grain yield and protein content were higher in the cultivated plot than in the reclaimed land. Maximum yield of green plant or the greatest grain yield occurred in the plot of N.P.K: 4.10.8+compost: 1, 000 kg application and they diminished as the fertilizer application decreased. Yet there was no statistical significance in the chemical seed composition among treatments.
Genetic Variability of Important Quantitative Characters and Selection for Yield in Soybean (I)
Shin-Han Kwon ; Jae-Rhee Kim ; Kyung-Heui Lee ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 92~96
Considerably large phenotypic and genotypic variations for the important agronomic traits were found in a soybean population consisted with 825 local lines collected in Korea. Genetic coefficient of variation, heritability, and genetic gain for seed weight, plant height. and number of pods per plant were relatively high. Maturity showed a high heritability value with a low genetic gain and the result may be due to the narrow range of maturity date of the population studied.
Studies on the Induction of Sprouting of Dormant Seed Potato in Fall Crop Production
Jae-Young Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 97~124
To find out the most effective method of treatments for the induction of sprouting of dormant seed potato pieces for the fall crop production of Irish cobbler, this experiment was carried out with sprout inducing bed and field performance trial. In GA treatments, about 10 days were required to sprout and resulted uniform and thin 3-4 sprouts per tuber piece, but sprouts were slender and rooting was not observed. In Ethrel treatments, 20-25 days were required, and sprouts were inferior than that of GA treatment in uniformity of sprouting, and percentage of rotten pieces and of healthy sprouted tuber pieces, but number of sprouts per tuber pieces was low, being 1-2, and sprouts were short, thick, and healthy, and showed good rooting. In GA and Ethrel mixture treatments, 1-2 more days were required to sprout than GA treatments, but sprouts were relatively healthy, and other sprouting pattern were like that of GA treatments. In Ethylene chlorohydrin and 6-Benzyl-adenine treatments, sprouting was like that of Ethrel treatments, but much more days were required than Ethrel treatments and tendency of severe rotting was observed. Optimum treating methods of promising chemicals found to be 1-2 and 2-5 ppm GA solution, 500 and 1000-2000 ppm Ethrel solution, and 1-2＋250-500 and 5＋250-500 ppm GA and Ethrel mixture solution for 60 min. treatment of tuber piece and whole-tuber, respectively. Induction of sprouting in dry and hot time resulted severer rotting of tuber pieces during the induction of sprouting and with the advancement of dormancy, being delayed in date of treatment, tendency of promotion of sprouting and rooting was observed. When sprouted tuber piece was transplanted at the same date, yields were in order of Ethrel, GA and Ethrel mixture, and GA treatment, indicating the correlation between yield and healthiness of sprout and rooting status of sprouted tuber piece. In all treatments, earlier transplanting resulted higher yields.
Studies on the Effects of Various Treatments on the Tuber Formation of Potatoes
Jae-Young Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 125~131
To study the effects of temperature, day length, and various plant growth regulator treatments on the tuber formation of Irish cobbler, this experiment was carried out with 2 combinations of day-length and temperature and 11 kinds of growth regulator, including GA, and their combinations. For the tuber formation, low temperature-short day condition played decisive role, and exceeded the effects of growth regulators. 4 times foliar application of 10 ppm GA resulted marked elongation of stolon but did not inhibit the tuber formation even under high temperature longday condition.
Studies on Some Characters of Local and Introduced Varieties of Sunflower in Two Different Planting Date
Hyun-Ok Choi ; Ik-Sang Yu ; Kwang-He Kang ; Jun-Ho Cho ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 132~135
To obtain information on the characters of local and introduced varieties of sunflower, 492 varieties were planted on May 1. and June 15, 1974. Results observed were as flowers; 1) In flowering date, local varieties showed no significant difference between planting date, however introduced varieties were late in the delayed planting date. 2) Local varieties were more sensitive at the response of day length effect than introduced ones. 3) Introduced varieties were recommandable than local in growing them after barley harvest. But local varieties were stable in transplanting.
The Effects of Seeding Pattern and Rate on the Yield and Agronomic Characters of Barley Under Different Cultural Conditions
Pyeong-Ki Yim ;
KOREAN JOURNAL OF CROP SCIENCE, volume 21, issue 1, 1976, Pages 136~179
Effects of seeding pattern and rate on the yield and some agronomic characters of barley under different cultural conditions were observed at Suweon, Daejeon and Jinju during the barley growing season from 1972 to 1974. Plant height and culm length were increased by dense seeding, shading, heavy fertilization, moving location down to the lower latitude. The tiller number per plant, dry matter weight, leaf number on main stem, percentage of valid tillers, RGR, NAR, and
were increased by heavy fertilization, sparse seeding, reduced furrow width and drilling likewise the length, width and angle of leaf. The newer cultivar had higher RGR and NAR. The higher yielding cultivars had higher potential for carbohydrate assimilating ability. Straw weight and grain yield were increased by dense seeding, reduced furrow width, drilling, heavier fertilization and moving the location to the south, and then decreased by shading and late seeding. High yield increase by drilling was found in late seeding. The optimum seeding rate for the yield increase were 15l/10a for furrow and 25l/10a for drilling. The spike number type cultivars were favourable for the sparse seeding and the spike weight type cultivars seemed to be suitable to the dense seeding, The repeatability of days to heading due to location and fertilizer level was higher than that of seeding time and seeding method. Repeatability of culm length was extremly high in seeding method and comparatively high in fertilizer level while low in location. The repeatability of yield due to location and seeding methods was comparatively high, but the tendency was different along with different cultivars. Also the repeatability of yield due to the fertilizer level was generally high except cultivar Haganemngi.