grain loss Articles
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Genetic relationship and QTL association between kernel shattering and agronomic traits in wheat
Kernel shattering can cause severe grain yield loss in wheat (Triticum aestivum L.). Evaluation of kernel shattering in the field could be difficult because of environmental effects and the influence of other agronomic traits. The objective of this study was to determine the genetic relationship between kernel shattering and various agronomic traits. A recombinant inbred line (RIL) population ...
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Mapping of QTL associated with maize weevil resistance in tropical maize
The maize weevil (MW), Sitophilus zeamais (Motsch.), is an important pest of stored maize (Zea mays L.) in tropical areas. Quantitative trait loci (QTL) associated with MW resistance were analyzed. A total of 163 F2 progeny derived from the cross CML290 (susceptible) x Muneng-8128 C0 HC1-18-2-1-1 (resistant), were genotyped with 151 molecular markers. Resistance was evaluated using bioassays on ...
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Genetic mapping of sheath blight resistance QTLS within tropical Japonica rice cultivars
Most commercial cultivars of rice (Oryza sativa L.) are susceptible to sheath blight (SB), a devastating fungal disease causing significant losses in grain yield and quality. There are limited sources of genetic resistance adapted to U.S. growing conditions, and no commercial long grain cultivar of rice is currently available in the United States with a high level of SB resistance. Sheath blight ...
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Ozone for Grain Storage
The loss of grain in storage relating to or resulting from living things such as insects, pests, rodents, and fungi and form physical rather than biological such as temperature or moisture lead to global losses that exceed 80 million metric tons in grain storage. Most of the time, Aluminium Phosphide is used for fumigation, though it can be dangerous. Also, insects and pests have developed ...
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Controlling Barnyardgrass with Corn Hybrid Selection
Barnyardgrass is a summer annual grass weed with a global impact on corn production. Yield losses due to barnyardgrass competition have been estimated up to 45% or more for crops such as cotton and corn. Besides corn, it can also be a serious weed pest in rice, soybean, sugarbeet, cotton, and corn. Integrated weed management techniques can be used for control of barnyardgrass in corn. High ...
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Boost grain preservation before production
Better grain storage would save money and feed over a billion, says Digvir S. Jayas. It deserves more attention. Annually over 2.6 billion tonnes of grains — cereals, oilseeds and pulses — are grown and then stored along the chain from producers to consumers. Most countries do not systematically report how much grain becomes unfit for human consumption during storage, but anecdotal ...
By SciDev.Net
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Simulated effects of Nitrogen management and soil microbes on soil Ntrogen balance and crop production
Searching for environmentally friendly N management practices in the midwestern United States is an ongoing task in the agricultural community. Many practices have shown promise in reducing N in tile drainage that may contribute to hypoxia in the Gulf of Mexico. In this study, an agricultural system in central Iowa, managed using a corn (Zea mays L.)–soybean [Glycine max (L.) Merr.] rotation from ...
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Managing Moisture: Navigating Drydown Decisions
This season has been, without a doubt, one of the wettest since 2009. In many states, the excessive rain led to flooding and late planting. On my family farm in North Central Iowa, like on many farms throughout the Corn Belt, it was so wet that we couldn’t get into the field to plant on schedule. And the continued wet weather means that now high and variable grain moisture levels are ...
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Improving Cereal Storage Facilities with Gas Sensing
Storage of cereal crops and other foodstuffs is an essential part of ensuring a sustainable and robust food supply. Cereal crops are typically harvested between mid-July to mid-September but with careful storage can be kept for periods longer than a year.1 Successful storage of cereals involves the balance of a variety of environmental conditions to ensure the maintenance of quality and the ...
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Regional evaluation of critical nitrogen concentrations in winter wheat production of the North China plain
Investigating critical nitrogen concentration (CNC) in grain and straw provides insights into N nutrition, and can serve as a guide to improved agricultural practice. This regional study evaluated the relationship between N fertilization rate and grain yield, N concentration, potential N loss, and determined critical grain and straw nitrogen concentrations (CGNC and CSNC) for winter wheat ...
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Do synergistic relationships between nitrogen and water influence the ability of corn to use nitrogen derived from fertilizer and soil?
To improve site-specific N recommendations a more complete understanding of the mechanisms responsible for synergistic relationships between N and water is needed. The objective of this research was to determine the influence of soil water regime on the ability of corn (Zea mays L.) to use N derived from fertilizer and soil. A randomized split-block experiment was conducted in 2002, 2003, and ...
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U.S.-India: Dealing With Monsoon Failure
The scene plays out in India. At a reception, I met the head of Indian operations for Esso (now ExxonMobil). When I asked him how business was, he said it was great. In particular, diesel sales to fuel irrigation pumps were nearly double the previous year’s level. Why? Because farmers were pumping continuously to try to save their crops. Soon after, I met an embassy staff person, an avid ...
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