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Volume 30, Issue 4
Displaying 1-8 of 8 articles from this issue
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1. Socio-economy and Natural ConditionsTadashi MATSUNO, Masashi FUJITA1986 Volume 30 Issue 4 Pages 217-228
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSRice is the predominant crop in Burma's agriculture as indicated by the cultivated land to various crops: 56% to cereals (rice 50.19, wheat, maize, and other cereals), 20.83% to oil crops (groundnuts, sesame, sunflower etc.), 8.41% to peas and beans, 4.69% to industrial crops (cotton, jute, sugarcane, rubber, tobacco), 2.26% to vegetables (potato, tomato etc.), and 3.69% to platation crops (tea, coffee, etc.) .
Agricultural products amount to 60% of total exports in value, whilst forest products amount to 22%. The government of Burma has been promoting agricultural development with financial and technical assistance of foreign countries and international institutions since 1980. Especially emphasized in the development of large scale land improvement projects including the construction of irrigation and drainage facilities and flood protection works.
The gross national product per capita of US 78 in 1970 had increased to US 170 by 1983 and it is expected that agricultural development will continue to contribute to this high rate of economic development.
The analysis of present situation of Burma's agriculture is based on data collected and a reconnaissance survey in 1983.View full abstractDownload PDF (1154K) -
2 Rice Production System and Marketing, Storage StructureTadashi MATSUNO, Masashi FUJITA1986 Volume 30 Issue 4 Pages 229-241
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThe number of rice varieties in Burma has grown through the development of high yielding rice varieties suitable for the Burma's environment by crossbreeding of traditional varieties with IR varieties which were introduced from the International Rice Research Institute in Phillippines in 1967.
The introduction of high yielding rice varieties has been described in “Whole Township Special High Yield Paddy Production Program” published by the Agriculture Corporation of the Ministry of Agriculture in 1976. The prportion of high yielding varieties in the rice planting area of Burma was 7.8% for IR varieties and 9.8% for improved high yielding varieties in 1976. butthese had increased to 28.3% for IR varieties and 17.8% for improved high yielding varieties by 1981.
Prices and delivery quotas for rice are determined by the Agriculture and Food Production Trade Corporation under the surpervision of the Ministry of Trade, and have been controlled below 900 K/basket since 1975.
The net income of rice farming is low compared with that from other crops, while the production costs of rice have increased between 1977 and 1981. This situation cannot continue and rice yields must be drastically increased.
A large amount of rice is lost due to inadequate milling, transportation, marketing and storage.
Furthermore, second cropping should be shifted to cultivation of cash crops.View full abstractDownload PDF (1449K) -
I Effect of Different Sowing Times on Growth and Yield of the Spring wheatShigenari KOGA, Kaoru OZAK, Masatsuna SASAKI1986 Volume 30 Issue 4 Pages 242-250
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESS -
1. DM Intake and Nutrients DigestibilityTadao ICHIKAWA, Hideya HOMMA1986 Volume 30 Issue 4 Pages 251-256
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSTwo experiments were conducted to compare the efficiency of feed utilization in buffaloes and cattle. Four swamp buffaloes and four Holstein cows for experiment 1, and six swamp buffaloes and six Holstein cows for experiment 2, both from university farm of Tsukuba were employed in the present study. They were fed roughage alone, either orchardgrass hay or sugar cane top in experiment 1, and rice straw or orchardgrass hay in experiment 2. The consumption of sugar cane top was greater than that of orchardgrass hay by both species in experiment 1, though no difference was found between species. On the other hand, the consumption of orchardgrass hay was significantly greater than that of rice straw by both species, and cattle took more feed than buffaloes in experiment 2. No significant difference was found between the two species of animal in digestibility of orchardgrass hay or sugar cane top. Higher digestibility of rice straw in buffaloes than in cattle was observed in experiment 2, though there was no difference between species in the case of feeding on orchardgrass hay where the animals seemed to be kept at a sufficient level of nutrition. From the results obtained, it may be fair to conclude that buffaloes show better digestion of low quality roughage than cattle when the animals are kept in under nutritional condition.View full abstractDownload PDF (600K) -
2. Evaluation of Dry Matter Digestibility of Sugar CaneTomoki TAKAMURA, Hisao NAKANO1986 Volume 30 Issue 4 Pages 257-263
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSField trials of sugar cane cultivation were conducted under the different planting methods and at three experiment stations located in Temperase and warm temperate zone of Japan. In vitro dry matter digestibility (DMD) of stems increased with growth upto 77% while that of leaves did not change much. Cellular content (CC) of stems was generally higher than that of leaves. Hemicellulose and cellulose fraction in cell wall constituents (CWC) did not change much but their digestibility decreased with growth. Acid detergent lignin (ADL) and SiO2 fraction in CWC of stems and leaves increased with growth slightly. There was a linear correlation between CC and DMD of leaves and stems of sugar cane throughout the growing period.
Sugar cane which has high dry matter productivity with high DMD, should be utilized as a forage crop even in Temperate zone.View full abstractDownload PDF (860K) -
VI. Structure of Copra Galactomannan and Specificity of Streptomyces β-Mannanase to the SubstrateIsao KUSAKABE, Agnes F. ZAMORA, Satoru KUSAMA, William L. FERNANDEZ, K ...1986 Volume 30 Issue 4 Pages 264-271
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThe hydrolysis of copra galactomannan (Gal: Man≅1: 14) by the purified β-mannanase IV from Streptomyces sp. No. 17 produced seven kinds of oligosaccharides, that is, three kinds of β-1, 4-mannooligosaccharides (D.P.=2, 3 and 4) and four kinds of galactomanno-oligosaccharides (Gal : Man=1: 4, 1: 5, 2: 5 and 2: 6) . The structural study of the oligosaccharides showed that galactomannan is composed of the main-chain of 1, 4-linked β-D-mannosyl residues to which single α-D-galactosyl branches at the O-6 position of D-mannosyl residue are attached.
All the reducing- and non-reducing-ends of the galactomanno-oligosaccharides were D-mannosyl residues devoid of an α-galactosyl branch. Thus, it is concluded that the enzyme has a specificity to the D-mannosyl residues of the main-chain devoid of an α-galactosyl branch.View full abstractDownload PDF (2740K) -
Masaomi ONIKI, Libia Quintana VIEDMA, María Elvezia RAMIREZ1986 Volume 30 Issue 4 Pages 272-276
Published: December 01, 1986
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (3569K) -
Shiro MIYASAKA1986 Volume 30 Issue 4 Pages 277-281
Published: December 01, 1986
Released on J-STAGE: January 31, 2011
JOURNAL FREE ACCESSDownload PDF (652K)
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