rice planting Articles
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Enhancement of salt tolerance in transgenic rice expressing an Escherichia coli catalase gene, kat E
Rice (Oryza sativa) is sensitive to salt stresses and cannot survive under low salt conditions, such as 50 mM NaCl. In an attempt to improve salt tolerance of rice, we introduced katE, a catalase gene of Escherichia coli, into japonica rice cultivar, Nipponbare. The resultant transgenic rice plants constitutively expressing katE were able to grow for more than 14 days in the presence of 250 mM ...
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Uptake and distribution of Iodine in Rice plants
Rice (Oryza sativa L.) plants were cultivated in an experimental field and separated at harvest into different components, including polished rice, rice bran, hull, straw, and root. The contents of iodine in these components and the soil were determined by inductively coupled plasma–mass spectrometry and radiochemical neutron activation analysis, respectively. Iodine content varied by more than ...
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Stability of rice grain and whole kernel milling yield is affected by cultivar and date of planting
The objectives of this study were to evaluate rice (Oryza sativa L.) cultivar stability and to characterize different planting dates for their consistency in grain yield and milling. Eight rice cultivars and seven planting dates were evaluated from 2003 to 2005 for a total of 19 yr x planting date environments. The coefficient of variation of cultivars and planting dates, a measure of relative ...
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Impact of high nighttime temperature on respiration, membrane stability, antioxidant capacity, and yield of rice plants
Nighttime temperature is one of the major environmental factors influencing plant metabolic processes. The respiration rates, membrane thermal stability (MTS), and total antioxidant capacities of leaves were investigated in rice (Oryza sativa L.) plants when exposed to high nighttime temperature (HNT) (32°C) or ambient nighttime temperature (ANT) (27°C), and with or without potential preventive ...
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On biologically produced nanomaterials
Living organisms produce a wide variety of nano-sized materials or nano-structured materials to preserve their species on the planet. As Biologically Produced Nano Materials (BPNM) form according to the genetic information obtained in the process of their evolution, its shape or composition is well stabilised, controlled and regulated, and it can be easily mass-produced with environmental ...
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Distribution of arsenic and other minerals in rice plants affected by natural straighthead
Because of the inconsistency and unpredictability of naturally occurring straighthead, arsenical herbicides are sometimes used to induce straighthead-like symptoms to study this sterility disorder. In 2005, an outbreak of naturally occurring (nonchemically induced) straighthead in rice (Oryza sativa L.) study fields in Stuttgart, AR provided an opportunity to examine the role of minerals in this ...
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Things Should be Noticed during Operating Rice Transplanter
Start the engine in the following orders: check whether there is full of oil in the engine; open the oil circuit and then open the throttle; check the whether the clutch is separate and the gear shift level is in the neutral position; start the engine. Before planting the rice seedlings, a test should be made to check whether the machine can transplanter the rice according to the rice ...
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Cultivation of rice for animal feed with circulated irrigation of treated municipal wastewater for enhanced nitrogen removal: comparison of cultivation systems feeding irrigation water upward and downward
To achieve enhanced nitrogen removal, we modified a cultivation system with circulated irrigation of treated municipal wastewater by using rice for animal feed instead of human consumption. The performance of this modified system was evaluated through a bench-scale experiment by comparing the direction of circulated irrigation (i.e. passing through paddy soil upward and downward). The modified ...
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Tissue-specific expression of rice CYP72A21 induced by auxins and herbicides
Cytochrome monooxygenase P450s (CYPs) comprise one of the largest enzyme families in plants. Some P450s are involved in xenobiotic metabolism: they confer herbicide tolerance and are induced by chemical treatments. We isolated a novel P450 cDNA, CYP72A21 (accession number, AB237166), from rice (Oryza sativa L. cv. Nipponbare) seedlings treated with a mixture of 2,4-dichlorophenoxyacetic acid ...
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Rice production with minimal irrigation and no nitrogen fertilizer by intensive use of treated municipal wastewater
We designed a new cultivation system of rice with circulated irrigation to remove nitrogen from treated municipal wastewater effectively and assessed the possibility of nitrogen removal in the new system without any adverse effects on rice production through bench-scale experiments through two seasons. Overgrowth of the rice plant, which can lead to lodging and tasteless rice, was found in the ...
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Arsenite stress variably stimulates pro‐oxidant enzymes, anatomical deformities, photosynthetic pigment reduction and antioxidants in arsenic tolerant and sensitive rice seedlings
Contamination of arsenic (As) in rice (Oryza sativa L.) paddies and subsequent uptake by rice plants is a serious concern as rice is the staple crop for millions. Identification of As toxicity and detoxification mechanisms in paddy rice cultivars would help to reduce As‐associated risk. Arsenic tolerance and susceptibility mechanisms were investigated in two differential As accumulating rice ...
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How to build the perfect levee in 5 steps
In June, the rice-planting season will shift into high gear across the country. And as anyone who has worked with rice knows, it’s unique because of the irrigated conditions it’s grown in. For the crop to be a success, you need a levee that produces the right controlled flooding environment. To help you be successful this season, AMCO has created this guide to building levees that ...
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Nitrogen removal and power generation from treated municipal wastewater by its circulated irrigation for resource-saving rice cultivation
This study aims at improving the performance of the cultivating system of rice for animal feed with circulated irrigation of treated municipal wastewater by applying a larger amount of wastewater, as well as adding a microbial fuel cell (MFC) to the system. The results of bench-scale experiments indicate that this modification has increased the rice yield, achieving the target for the rice ...
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U.S. Rice and NAFTA
Implications The NAFTA agreement series begins our focus on commodities, with a look at rice. In 2016, one in every eight rows of rice planted in the United States made its way to our NAFTA partners. But recent moves by the governments of the United States, Mexico and Canada could lead to a change in the important Mexican and Canadian markets. The Growth Story Prior to the NAFTA agreement, ...
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Study of the variation trend, abrupt behavior and relationship between climate and planting structure in a cold region of China: a case study of Heilongjiang Province
Climate change has changed planting structure greatly in cold regions. Studies are needed that understand the relationship between climate change and agriculture in cold regions and to serve as references for studies of the impact of climate change on agriculture in similar areas. This paper uses Heilongjiang Province as a case study; seven test methods and mutual information were used to ...
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Basic Information of Rice Production Line
The objective of a rice milling system is to remove the husk and the bran layers from paddy rice to produce whole white rice kernels that are sufficiently milled, free of impurities and contain a minimum number of broken kernels. The milling yield and quality of rice is dependent on the quality of the paddy, the milling equipment used and the skill of the mill operator. With the rapid upgrading ...
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The optimization of the paddy field irrigation scheduling using mathematical programming
In planting rice, a significant amount of irrigation water is required to prepare the farmlands and do transplanting and this is directly related to the number of machines and workers available; that is, the more the length of plowing and transplanting process due to the lack of required machinery and labor, the more the water volume consumed. Therefore, in such conditions, it is important to ...
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Rice seeding and nitrogen rate effects on yield and yield components of two rice cultivars
Field research was conducted for 2 yr to investigate the relationship between rice (Oryza sativa L.) seeding rate and preflood nitrogen (N) rate utilizing long-grain rice cultivars planted into clay and silt loam soils. Rice cultivars included ‘Cheniere’ and ‘Wells’ seeded at 162, 323, and 646 seeds m–2. Nitrogen was applied before flooding at 67, 134, and 202 kg ha–1. No response to soil texture ...
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The quality of flour processing equipment is the top priority
The quality of flour processing equipment is the top priority! Today, we at ABC Machinery ushered in a young guy in his 20s. He is going to start his own self-feeding flour stand-alone machine to do incoming processing and provide flour to the people around him. This guy’s idea is good, this the entrepreneurial spirit of this young man is also worthy of respect and support! So we explained ...
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Precautions before operating the paddy transplanter
A rice transplanter is a specialized transplanter widely used to plant rice seedlings in the paddy field. The machine can both improve the efficiency and quality of rice transplanting. However some questions are claimed by the clients when using the paddy transplanter and we found that most of the problems are caused by the unproper use of the rice planter machine. In the following, we will give ...
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