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Registros recuperados: 147
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AN OBSERVATION ON ECOLOGY OF Stephanitis typica DISTANT (HEMIPTERA, TINGIDAE) ON BANANA Taiwan Agricultural Research Institute
C.H. Cheng; 鄭清煥.
[[abstract]]The observation on the ecology of banana lace bug (Stephanitis typica Dis-tant) in laboratory and field during 1965 and 1966. The insect which we observed was a small bug about 0.40 mm. in length, and was a species of the family Tingidae. Both the adult and nymph of the insect injured the banana by suck-ing the sop of leaves under the surface, that caused the leaves to become mottled with grayish-yellow blotches and retarded the growth of plant consequently. The result of the observation in laboratory indicated that, the bug took 9 generation in a year. The period of incubation lasted 11.92±2.43 days in summer and 32.10± 10.59 in winter. The interval of nymphal stage ranged from 10 days to 38 days with an average of 17.69 days. The average...
Palavras-chave: [[classification]]14.
Ano: 1967
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Interactions between Biotypes of the Brown Planthopper and Rice Varieties Taiwan Agricultural Research Institute
Ching-Huan Cheng; 鄭清煥.
[[abstract]]Behaviors of four biotypes of the brown planthopper on rice varieties with different resistance genes were investigated. Results showed that the behavioral and physiological responses of a biotype to rice varieties having the same resistance gene on which the biotype was developed, in general, resemble the response to susceptible varieties. The biotypes developed from the varieties with a stronger antibiotic factor to the insect showed more virulent to different varieties than those from a weaker one. Histological studies of the feeding sites in the tissues of resistant varieties revealed that no mechanical barrier to the insect’s feeding involved. However, any biotype put on unsuitable host plants showed restless and changed their feeding...
Palavras-chave: [[classification]]14.
Ano: 1985
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Variation in Fruit Characters between Normal- and Shrivelled-seed Lychee Varieties Taiwan Agricultural Research Institute
Chung-ruey Yen; 顏昌瑞.
[[abstract]]Variation of fruit characters within and among trees were studied in two shriveled-seed varieties of ‘Sah Keng’ and ‘Kang Wei’ and the most widely cultivated normal-seed variety ‘Hak Ip’. Analysis of variance showed that the variation among trees contributed more to the total variability than that within tree. Analysis also indicated that the variation among locations was much greater than that of within and among trees, in ‘Hak Ip’ variety. In general, fruit length, fruit diameter, fruit weight, shell weight, and aril weight were not significantly different within tree. The protuberance of the shell, aril color, percentage of shrivelled seeds and ratio of aril weighs in fruit were not significantly different both within and among trees in...
Palavras-chave: [[classification]]14.
Ano: 1983
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Oriental Pear Breeding for High Fruit Quality and Adaptation to Subtropical Lowland in Taiwan Taiwan Agricultural Research Institute
Hsin-Tszu Hsu; Shue-Cheng Lin; 徐信次; 林學正.
[[abstract]]The breeding objective of pear is to develop varieties with high fruit quality but low chilling requirement for table use. Hybridizations of 9 combinations started in 1976 were made from a native, very low-chilling required variety 'Hungshan' and 7 introduced varieties with high-chilling requirement but high fruit quality. Hybrid progenies were planted with a highly dense spacing of lMx4M at TARI's experimental orchard which is about 100M above sea level. Five hybrid progenies with early maturing, high fruit quality and low-chilling requirement in characters were selected out of more than 1,500 hybrid seedlings after 1 to 5 years juvernile period by the culture of single trunk training and heavy fertilization. Top-working of these selected...
Palavras-chave: [[classification]]14.
Ano: 1987
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EFFECT OF SHADING ON TONKAN ORANGE (CITRUS TANKAN HAYATA) I. The effect of shading on wind injury, fruit quality, size, and rate of fruit growth Taiwan Agricultural Research Institute
Mong-Yu Yen; Chou-Hai Lin; 嚴夢如; 林澤海.
[[abstract]]1. Tonkan fruits grown under shading were outstanding for smoothness and attractiveness of appearance, it may have some relation between the size and number of oil gland of the fruit. 2. The percentage of wind injured scurf appeared on fruit was found less on shaded plots than those in the plots without shading. It gave the evidence that interplanting of Acacia would also be effective as windbreak. 3. Sun scald was lower in the shaded plots than in the plots without shading. 4. The growth rate of fruit was reduced under dry condition, almost no growth was found in the plots without shading during dry condition. 5. The fruit juice obtained from shaded plots had more acidity than those of from the plots without shading. This is perhaps due to the...
Palavras-chave: [[classification]]14.
Ano: 1966
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ASSESSMENT OF YIELD LOSSES DUE TO RICE SHEATH BILGHT AT DIFFERENT INOCULATION STAGES Taiwan Agricultural Research Institute
W.H. Tsai; 蔡武雄.
[[abstract]]Yield losses in IR 833-6-2-14 (an early maturing variety) clue to sheath blight were studied at six stages of inoculation. A reduction in yield was 7.95, 7.15, 6.05, 10.78, 11.73, and 1.85% at 15, 30, 45, 60 days after seeding, at booting stage, and milk stage, respectively. The yield and yield loss were compatible with disease index at 15, 30, 45, 60 days after seeding and at booting stage. The reduction in yield was highly significant. 本報告為水稻品種IR 833-6-2-1-1(早熟品種)在六個不同接種時期對紋枯病的產量損失估計之研究,水稻在移植後15天,30天,45天,60天,孕穗期及乳熟期接種的減產各為7.95, 7.15, 6.05, 10.78, 11.73及1.85%,其產量、產量損失與發病率的關係,除乳熟期接種者外,其餘在移植後15天,30天,45天,60天及孕穗期接種者均頗一致。水稻由紋枯病而引起的產量損失為極顯著。
Palavras-chave: [[classification]]14.
Ano: 1974
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Studies on the Papaya Damping-off Disease Taiwan Agricultural Research Institute
W.H. Tsai; 蔡武雄.
[[abstract]]Among the varieties of papaya plants to damping-off indicated that the variety of “Line 1” Solo is the most susceptible to this disease, the percentage of its infestation reached about 26.6%. Some new varieties of papaya plants introduced were Costa Rica and A4 (H. P.) which have been proven to be the most resistant to this disease. The percentage of its infestation ranged from 2.3 to 4.7% in these varieties. Up to now, the “Solo 1” variety is widely cultivated in southern Taiwan. The damage of this variety frequently causes heavily injury under favorable conditions. The damping-off is rapidly developed in the seedling stage, particularly in raining season, because the weather frequently changes high humidity at fine days and the temperature is...
Palavras-chave: [[classification]]14.
Ano: 1970
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CHEMICAL WEED CONTROL IN TRANSPLANTED WINTER RICE IN SAUDI ARABIA Taiwan Agricultural Research Institute
W.L. Chang; C.C. Chiu; W.S. Chen; Mohammed Al-Arfage; 張萬來; 邱建中; 陳文雄; 穆哈默德.阿爾華吉.
[[abstract]]Four granular and two liquid herbicides were tested in transplanted winter rice in the Al-Hassa Oasis. Among granular herbicides, benthiocarb-M and butachior gave better control of weeds with no sustained injury to rice while nitrofen and MO-401 did not perform effectively under local conditions. Both liquid herbicides, propanil and benthiocarb, also provided adequate control of weeds but caused more crop damage than the granular herbicides. More economical control of weeds in transplanted winter rice in Saudi Arabia appears likely with the use of herbicides. 本文係報告四種粒劑及兩種乳劑除草劑在Al-Hassa綠洲冬季移植稻田之治草試驗結果。在粒劑除草劑中,掃丹-M與馬上除兩種之藥效較佳,又無明顯藥害,惟多谷與益歐粒劑之表現則欠理想。思登與掃丹乳劑之治草效果亦佳,惟其藥害亦較嚴重。初步結果顯示沙烏地阿拉伯冬季移植稻田之經濟使用除草劑似屬可能。
Palavras-chave: [[classification]]14.
Ano: 1976
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RESPONSE OF WEEDS AND RICE TO CERTAIN GRANULAR HERBICIDES Taiwan Agricultural Research Institute
W.L. Chang; C.P. Mao; 張萬來; 毛振鵬.
[[abstract]]The response of weeds and rice to 11 herbicide treatments evaluated at the Chiayi Agricultural Experiment Station , Chiayi, Taiwan in the second crop of 1971 are reported. Granular C-288 + 2, 4-D IPE and C-285 + 2, 4-D IPE provided the best control of weeds. Good initial control of weeds was also obtained with C-290 + 2, 4-D IPE and NTN5006/2, 4-D IPE , Granular 2, 4-D IPE , CP53619, and Bonthiocarb gave the poorest control of weeds, but weed control effect of CP53619 and Benthiocarb was considerably improved when combined with 2, 4-D BE and 2, 4-D IPE, respectively. Rice plants were not injured by the herbicide treatments but the growth of rice plants was indirectly affected by weed competition in the treatments with poor control of weeds....
Palavras-chave: [[classification]]14.
Ano: 1972
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EFFECT OF SOIL TREATMENT ON THE EMERGENCE AND GROWTH OF WEEDSAND RICE Taiwan Agricultural Research Institute
W.L. Chang; C.P. Mao; 張萬來; 毛振鵬.
[[abstract]]Preliminary results on the emergence and growth of weeds and rice as affected by the burning of soil obtained at the Chiayi Agricultural Experiment Station in the first crop of 1972 are reported. The germination and early growth of Echinochloa crusgalli were not affected by the burning of the soil while Monochoria vaginalis and Cyperus difformis showed poor germination and growth on the burned soil. Rice variety Taichung shen 2 germinated poorly and developed severe seedling disease on the untreated soil but seed germination and seedling growth were apparently normal on the burned soil, although there was evidence of slight suppression on the seedling height....
Palavras-chave: [[classification]]14.
Ano: 1972
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THE EFFECT OF WEEDS ON RICE IN PADDY FIELD-Ⅲ.TIME OF WEED ERADICATION Taiwan Agricultural Research Institute
W.L. Chang; C.P. Mao; 張萬來; 毛振鵬.
[[abstract]]The effect of time of weed eradication on rice was evaluated in both crops in 1970. Average percentages of yield reduction recorded for the first, eradications of weeds were 0, 16.7, 29.4, and 51.6%, respectively.Weeds eradicated at 15, 30, 45, 60, and 10. 20, 30, 40 days after transplanting in the first and second crops reduced yield by 0% , 1.2%, 12.2%, 38.9%, and 8.2%, 32.3%, 46.7%, 64.3%, respectively. Mnochoria vaginalis cused more damage to rice if early eradication was not made while Echinochloa crusgalli and Cyperlts difforims rednced rice yield more severely when they were eradicated until late growing stage of rice. The damage of weeds eradicated at early growing stage of rice appeared heavier in high fertilizer treatment. The time of...
Palavras-chave: [[classification]]14.
Ano: 1972
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MANIFESTATION OF HYBRID VIGOR IN RICE Taiwan Agricultural Research Institute
W.L. Chang; E.H. Lin; C.N. Yang; 張萬來; 林恩輝; 楊建南.
[[abstract]]The manifestation of heterosis for grain yield, yield components and several important agronomic characters by a group of 265 F1 hybrids of rice over a six-crop period from the second crop of 1967 to the first crop of 1970 are reported. Among 265 F1 hybrids evaluated, a total of 192 or 72.5% of the total hybrids outyielded their mid-parent and check varieties while grain yield of 145 or 54.7% of the hybrids exceeded their respective high-parent. The average heterosis for these outstanding F1 hybrids was 20.3, 19.1 and 18.3% in relation to mid-parent, check varieties and high-parent, respectively. However, the magnitude of hybrid advantage over the mid-parent and check varieties reduced to 10.6 and 6.3% respectively when the average data of the...
Palavras-chave: [[classification]]14.
Ano: 1971
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AGRONOMIC PERFORMANCE OF THE F1, F2 AND F3 GENERATIONS OF RICE CROSSES Taiwan Agricultural Research Institute
W.L. Chang; E.H. Lin; 張萬來; 林恩輝.
[[abstract]]The performance of grain yield, days to heading, plant height, and number of panicles per hill was evaluated in the F1, F2 and F3 generations of early maturing japonica, indica, and late maturing japonica crosses at the Chiayi Agricultural Experiment Station over the 3-crop period from the second crop of 1970 to the second crop of 1971. The mean F1 yield of all 21 crosses was 6.7, 12.9, and 19.2% greater than the higher parent, mid-parent and check variety, respectively. The F2 yield, relative to the higher parent, mid-parent, and check variety was 95.6, 101.4, and 111.9%, respectively. The average percentage of decrease of heterosis for grain yield from F1 to F2 was 6.4%. The mean F3 yield of 10 late maturing japonica crosses was 93.4, 99.0...
Palavras-chave: [[classification]]14.
Ano: 1972
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PERFORMANCE OF SOME FEED AND SWEET CORN VARIETIES IN THE EASTERN PROVINCE OF SAUDI ARABIA Taiwan Agricultural Research Institute
W.L. Chang; H.Y. Huang; C.C. Chiu; Ahmad Abdulrahman Ahmair; 張萬來; 黃和炎; 邱建中; 阿哈穆 阿布達拉曼 阿哈米.
[[abstract]]The performance of five corn cultivars including two hybrid feed corn, two hybrid sweet corn and one pureline sweet corn was observed in the spring growing season on an old cultivated soil in the Al-Hassa Oasis of Eastern Saudi Arabia. Intense heat, strong sunlight and low humidity prevailing in the middle of May caused slight injury to the newly emerged tassels and young leaves of Hawaiian Sugar but not to the other varieties. The optimum number of days to tasselling in Al-Hassa appeared to be in the range of 60 to 63 days from sowing. Leaf area indices of 3.5 to 4.1 and 4.8 to 4.9 might be adequate for achieving high yields for sweet corn and feed corn cultivars respectively. Hawaiian Sugar significantly outyielded other varieties in fresh...
Palavras-chave: [[classification]]14.
Ano: 1976
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INHERITANCE OF RESISTANCE TO PHYTOTOXICITY OF PHENYL MERCURIC ACETATE IN RICE Taiwan Agricultural Research Institute
W.L. Chang; J.N. Chao; 張萬來; 趙政男.
[[abstract]]The inheritance of the marked differences between rice varieties in response to phenyl mercuric acetate (PMA) dust was investigated in the first crop of 1966 at the Chiayi Agricultural Experiment Stations. The resistant japonica-type variety, Chianung 242, was crossed with a sensitive indica variety, Taichung Native 1, and their F1, F2, BC1, and BC2 plants were used in the testing. The individual seedlings or plants were classified for resistance to PMA toxicity based on an arbitrary scale devised by the authors. The observed data agreed with the hypothesis that sensitivity to PMA toxicity is controlled by at least two pairs of alleles, Prna1 and Prna2. The possible implication of tolerance to PMA toxicity on the future rice breeding program is...
Palavras-chave: [[classification]]14.
Ano: 1966
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Resistance of Rice Varieties to Brown Planthopper (Nilaparvata lugens Stal) Taiwan Agricultural Research Institute
W.L. Chang; L.C. Chen; 張萬來; 陳隆澤.
[[abstract]]Eighteen rice varieties introduced from the International Rice Research Institute (IRRI) and four local commercial varieties were evaluated for their resistance to the brown planthopper in the first and second crops of 1970 at the Chiayi Agricultural Experiment Station. Among IRRI introductions, H 105, Muthumanikam, and IR 9-60 were rated as highly resistant; Mudgo, ASD 7, Kayama MGL 2, Vellanlangalayan, IR 747 B2-6-3 and IR 1154-243 as resistant; PTB 18 as moderately resistant; DV 139 and AC 435 as moderately susceptible; DK 1, Bir-tsan No.3, IR 8, and IR 20 as susceptible, and Pankhari 203 and Zenith as highly susceptible. Four local commercial varieties Chianan 8, Tainan 5, Kaohsiung shen 2, and Taichung native 1 all fell in the category of...
Palavras-chave: [[classification]]14.
Ano: 1971
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REACTION OF RICE VARIETIES AND STRAINS TO BLAST IN THE UNIFORM BLAST NURSERY Taiwan Agricultural Research Institute
W.L. Chang; M.K. Wang; S.C. Yang; 張萬來; 王茂康; 楊遜謙.
[[abstract]]A total of 161 varieties, selections, and lines were tested for reaction to com-posites of races of the blast fungus in the uniform blast nursery of the Chiayi Agricultural Experiment Station during the 9-year period, 1956-1964. Forty out of 161 entries were found to have similar or higher resistance to leaf blast than the resistant check variety, Chianung 242. Among these, 5 were highly resistant, 25 resistant, and 10 moderately resistant. Only 3 commercial varieties were resistant while the other 19 varieties were susceptible to leaf blast. Twenty nine out of 33 entries resistant to leaf blast were also resistant to neck blast and the remaining 3 were susceptible. Among 21 commercial varieties, 12 resistant and 9 susceptible entries were...
Palavras-chave: [[classification]]14.
Ano: 1965
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EFFECT OF SPLIT APPLICATION OF FERTILIZER ON YIELD, COMPONENTS OF YIELD, AND OTHER AGRONOMIC CHARACTERS OF RICE (IV) Taiwan Agricultural Research Institute
W.L. Chang; S.C. Yang; J.N. Chao; 張萬來; 楊遜謙; 趙政男.
[[abstract]]The effects of time of fertilizer application on yield, components of yield, and some important agronomic characters of rice evaluated in 1965 at the Chiayi Agricultural Experiment Station are summarized. Treatment C with nitrogen fertilizer top-dressed at maximum tillering stage and treatment F, at both maximum tillering and panicle initation stages produced the highest yields in both crops. The yield increases appeared to be due largely to the increase of panicles per hill. Top-dressings of nitrogen fertilizer before maximum tillering stage did not contribute to yield increase. The effects of applying nitrogen fertilizer at heading stage and split application of potassium fertilizer were not evident in this experiment. Early application of...
Palavras-chave: [[classification]]14.
Ano: 1967
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EFFECT OF GROWING CONDITIONS ON YIELD AND COMPONENTS OF YIELD IN RICE Taiwan Agricultural Research Institute
W.L. Chang; S.C. Yang; 張萬來; 楊遜謙.
[[abstract]]The effects of 2 fertilizer rates, 3 planting densities, and 3 shapes of planting on the growth of rice conducted in the second crop of 1963 and the first crop of 1964 at Chiayi Agricultural Experiment Station are reported. Grain yields increased with increasing fertilizers and planting densities. The increase of yields was more pronounced in the first crop of rice. Differences in yields between fertilizer rates as well as among planting densities were not signifi-cant except in planting density of the first crop, 1964. Square shape of planting outyielded the other two rectangular shapes, a difference greatly exceeding the 1% level of probability in both crop seasons. Number of panicles per hill slightly increased with added fertilizers,...
Palavras-chave: [[classification]]14.
Ano: 1965
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EFFECTS OF SPLIT APPLICATION OF FERTILIZER AND PLANTING DENSITY ON YIELD, COMPONENTS OF YIELD AND OTHER AGRONOMIC CHARACTERS OF RICE Taiwan Agricultural Research Institute
W.L. Chang; S.C. Yang; 張萬來; 楊遜謙.
[[abstract]]A panicle-type Japonica variety of rice Chianung 242 was subjected to two methods of fertilizer application namely, conventional and split methods, and two levels of planting density, 64 hills and 96 hills per Pen (3.3 m2). The experiment was arranged in split plot design with methods of fertilization as main treatments and planting densities as sub-treatments. The experiment was replicated 4 times on the Experimental field of Chaiyi Agricultural Experiment Station in the second crop of 1963. Data on grain yield, components of yield and other agronomic characters were taken to determine the effect of both treatments as well as their interactions. Split application of fertilizer was found to produce higher yield than conven-tional method of...
Palavras-chave: [[classification]]14.
Ano: 1964
Registros recuperados: 147
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