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Northeast China (NEC) is an important grain production region where the maize yield is approximately 50 million t yr −1 which is approximately 30% of the nation's commercial food grain (maize) (Editing Committee of China Agricultural Yearbook 2009). The maize area accounts for more than 30% of the total crop area in NEC.
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Effect of intercropping on soil properties. Compared with monoculture intercropping resulted in a decrease of rhizosphere pH from 6.63 to 6.10 and …
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Water use efficiency in maize systems can be increased by optimizing irrigation (e.g. by deficit irrigation) and by increasing soil water retention via conservation agriculture minimum tillage and the covering of the soil surface in the field (with crop residues or plastic) 283031.
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Adopting spring maize (Zea mays L.) to replace part of a winter wheat (Triticum aestivum L.)–summer maize rotation system can mitigate agricultural water scarcity in the North China Plain. The main obstacle to increasing spring maize production is high-temperature stress (HTS) at grain-filling stage.
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1 1991-1992 average of three Missouri locations with 180 pounds N/A. While recent Missouri data appears to suggest that knifed UAN results in somewhat lower yields than ammonia or ammonium nitrate most other data and farmer experience shows injected UAN solution to be an excellent method of nitrogen application in no-till.
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A novel inbred maize variety designated PH4RF and seed plants and plant parts thereof. Methods for producing a maize plant that comprise crossing inbred maize variety PH4RF with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4RF through backcross conversion and/or transformation and to the maize seed plant ...
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In 2007 world production of wheat was 607 million tons making it the third most-produced cereal after maize (784 million tons) and rice (651 million tons). [2] Globally wheat is the leading source of vegetable protein in human food having a higher protein content than either maize (corn…
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A novel inbred maize variety designated PH4RD and seed plants and plant parts thereof. Methods for producing a maize plant that comprise crossing inbred maize variety PH4RD with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4RD through backcross conversion and/or transformation and to the maize seed plant ...
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The maize W22 genome has served as a foundation for maize genetics since its early adoption by Brink for studies of paramutation 1.The inbred developed at the Wisconsin Agricultural …
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Breeding crops that can acquire and utilise this limited resource with high efficiency is an important goal for agricultural sustainability in the future. The mapping and cloning of quantitative trait loci (QTLs) provides an effective tool in analyzing the genetic mechanisms underlying P efficiency and breeding P-efficient varieties.
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The efficiency of GE for AME was 73% with the lowest mean being 65% and highest mean being 80%. The energy difference from GE to AME is represented as fecal organic dry matter and urinary energy losses of mainly uric acid. The efficiency of AME for NE ranged from 71 to 76% with a mean of 74%.
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We evaluate our Vcmax estimation method at six agricultural flux tower sites in the midwestern US using spaced-based SIF retrievals. Our Vcmax estimates agree well with literature values for corn and soybean plants (average values of 37 and 101 µmol m-2 s-1 respectively) and show plausible seasonal patterns.
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We evaluate our Vcmax estimation method at six agricultural flux tower sites in the midwestern US using spaced-based SIF retrievals. Our Vcmax estimates agree well with literature values for corn and soybean plants (average values of 37 and 101 µmol m-2 s-1 respectively) and show plausible seasonal patterns.
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In most parts of China the agricultural production is still mainly by a labor-intensive and small scale management and the mechanization level is low. The energy consuming per unit is high and the production efficiency is low. According to data that 1.8 billion mu of arable land and 252 million rural labors there are only 7
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*Value based on corn at $3.00 per bushel plus $14 per ton grinding charge (total price of $121 per ton) and on soybean meal priced at $200 per ton. From: Alternative Feeds for Beef Cattle Publication AG-520-4 North Carolina Cooperative Extension Service 1994.
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AbstractTo investigate spatial variability in topsoil (0–20 cm) pH available phosphorus (P) potassium (K) total nitrogen (N) and soil organic matter (SOM) of small fields (∼2 ha) and to determine the impact of soil heterogeneity on the spatial variability of crop yield two fields were cropped with spring oats and one with winter wheat under humid-temperate conditions.
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Jia Fuguo1 Wang Fulin1 Bai Shigang2 Xia Jiqing1(1.College of Engineering Northeast Agricultural University Harbin 150030 China;(2.College of Science Northeast Agricultural University Harbin 150030 China) Effect of low temperature heat treatment on the activity of lipase Ⅷ from Pseudomonas Species in …
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Cropland fire emissions were concentrated in the three great plains of China namely the Northeast China Plain the North China Plain and the Middle-Lower Yangtze Plain. Because of high crop production in these areas large quantities of agricultural residues were burned in fields during the short period following the harvest season.
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In 2016 world production of wheat was 749 million tonnes making it the second most-produced cereal after maize. Since 1960 world production of wheat and other grain crops has tripled and is expected to grow further through the middle of the 21st century.
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