Distribution Of Rice Research Articles

Distribution of pecky rice in Ibaraki prefecture

Distribution of pecky rice in Ibaraki prefecture

Strategies for Increasing Rice Production in Sierra Leone

Sierra Leone is one of the more important rice-producing and consuming countries in West Africa. Sierra Leone was an exporter of rice in the early 1950's. Since 1955 the agricultural sector has not been able to meet domestic needs; Imports from 1960 to 1970 averaged $2.7 million annually (USDA 1968, p. 18). The need to import rice has continued in spite of governmental efforts to increase domestic production through a price-support program, fertilizer subsidization, land clearing, a heavily subsidized mechanical-plowing scheme, and the development of the Rice Corporation, which is legally responsible for controlling imports, providing for adequate distribution of rice throughout the country, establishing centers for collection, purchase, storage, and sale of rice, and setting the price for imported rice. Self-sufficiency in rice production has become the central focus of the national agricultural policy as established by the Government of Sierra Leone. With this as a policy framework, this paper first summarizes recent research related to the economics of rice production in Sierra Leone. Second, it outlines four possible strategies to increase rice output, in the context of both micro and macro costs. The four strategies examined include (1) improved extensive cultivation with existing levels of capital inputs, especially tools and equipment; (2) extensive cultivation based upon the broader development of rice lands suitable for partial mechanical cultivation; (3) intensive cultivation of inland-valley swamps developed primarily with family labor; and (4) intensive cultivation of mangrove and associated swamps requiring external expenditures for land development.

Flooded rice soils of Northern Australia. II. Chemical profiles

Changes in chemical and electrochemical properties of a flooded calcareous soil sown to rice were monitored during the season of flooding. Considerable variations in specific conductivity, individual cation concentrations, bicarbonate concentration, and carbon dioxide pressures were observed within the soil profile to depths of 30 cm. Redox potential and pH tended to be uniform within a profile except when CaSO4 or H2SO4 were added to the surface soil. Both field and pot experiments showed profile variations in soil properties and the significance of this is discussed in terms of the root distribution of rice.

Geographical Distribution and Ecotypic Differentiation of Wild Rice in Thailand

Geographical Distribution and Ecotypic Differentiation of Wild Rice in Thailand

Regional Difference of Rice Yields per Tan in Hidaka District, Hokkaido

In Hidaka district, the author investigated the relationships between the distribution of rice yields per tan and physical conditions. The results obtained are as follows ;(1) The regional distribution of rice yields per tan in this district is related to the distribution of accumulated air temperatures which is affected by the frequency of the sea fog.(2) The rice yields per tan in the eastern part are lower than in the middle and western parts. Within four kilometers from the coast, the yields are lower than in the middle- and upper-stream areas.

The Distribution of Japanese Red Rice and Its Characters

During the 17th and 18th centuries the long grain group of red rice was raised largely in the southern and partly in the middle provinces of Japan, while the short grain group was grown mostly in the northern and locally in the middle provinces thereon. At present, however, the distribution of these groups of red rice is considerably shifted ; the long grain group is epcountered in the several prefectures besides these of the southern district of Japan, and the short grain group is dispersedly found in the isolated parts of the country. As to the general characters of both groups of red rice, it may be said that the long grain group is reasonably designated as Indica type, and obviously upland rice, and that the short grain group is named as Japonica type, and naturally water rice. It is to be noted that the pigmentation in the outer layers of the kernel of red rice, regardless of the groups, is quite of similar nature. The pericarp displays brown color and the testa, purple color.

Studies of the Geographical Distribution of the Cultivated Rice : Third Report

Studies of the Geographical Distribution of the Cultivated Rice : Third Report

A study of the market distribution of rice during the Tokugawa days-an introduction

A study of the market distribution of rice during the Tokugawa days-an introduction