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Rice husk ash has long been used in ceramic glazes in rice growing regions in the Far East, e.g. China and Japan. [2] Being about 95% silica, it is an easy way of introducing the necessary silica into the glaze, and the small particle size helps with an early melt of the glaze.
Rice polyculture is the cultivation of rice and another crop simultaneously on the same land. The practice exploits the mutual benefit between rice and organisms such as fish and ducks: the rice supports pests which serve as food for the fish and ducks, while the animals' excrement serves as fertilizer for the rice.
One of the earliest known examples of companion planting is the growing of rice with Azolla, the mosquito fern, which covers the top of a fresh rice paddy's water, blocking out any competing plants, as well as fixing nitrogen from the atmosphere for the rice to use. The rice is planted when it is tall enough to poke out above the azolla.
Reduced water consumption: This is because rice plants do not require continuously flooded conditions to grow, [13] and that water savings can be achieved without compromising yields. Studies have shown that SRI can reduce water use by 25-50% compared to conventional rice farming, while maintaining or increasing yields. [14] [15]
In the areas of lowest precipitation, or where weedy red rice is a significant problem, farmers follow a three year, three phase "old rotation" of rice-soybean-soybean. However, most Arkansas rice producers follow a two year, two phase crop rotation of rice following soybeans. [3]
Today, of the 236,112 acres of rice fields that were documented, about 39,000 acres of tidal rice fields still have dike and water infrastructure and are managed for wildlife, such as Nemours.
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