crop fertilization Articles
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Top Dressing Fertilizer in Western Canada
Western Canada has a short growing season which makes another pass for top dressing fertilizer sometimes difficult to achieve. Many crops have the fertilizer applied during the seeding season with Liquid Distribution Systems, (like these kits we make here). Often this will meet the crops fertilizer requirements for the whole season. Making one pass makes sense in a season that brings the right ...
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Influence of urea fertilizer placement on nitrous oxide production from a silt loam soil
Received for publication April 8, 2009. Urea placement in band or nests has been shown to enhance N use efficiency, but limited work has been done to assess its affect on N2O emissions. This study compared N2O emissions from urea prills applied to an Amsterdam silt loam (fine-silty, mixed, superactive, frigid Typic Haplustolls) using broadcast, band, and nest placements. Experiments were ...
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N-(N-butyl)thiophosphoric triamide/NBPT
Urease inhibitor is a kind of substance that can inhibit the activity of soil urease, and it is a new technology which has been studied in urea or nitrogen compound fertilizer. Using soil urease inhibitor can effectively slow decomposition of urea into ammonia process, reduce soil NH4 + and NH3 concentration, soil fertility and crop fertilizer synchronization. NBPT is the most effective inhibitor ...
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Long-term fertilizer experiment network in China: Crop yields and soil nutrient trends
Results are summarized for the first 15 yr of an eight-site, long-term experimental network in China designed to assess the sustainability of cropping systems in environments representing 70% of Chinese cropland. Systems were wheat–maize double cropping (two crops per year) at four sites, wheat–rice double cropping, rice-based triple cropping, and wheat or maize single cropping. Without ...
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Broiler litter fertilization and cropping system impacts on soil properties
Understanding the effects of management practices on soil properties is necessary because soil properties are directly related to the capacity of soil to function. Soil physical, chemical and biological properties were determined after 3 yr in three cropping sequences [continuous cotton (Gossypium hirsutum L.) (CCC), cotton-corn (Zea mays L.)-cotton (CMC), and corn-cotton-cotton (MCC) each at ...
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Injection method of fertilization (Cultan technology)
Dosage of liquid fertilizers Liquid mineral fertilizers have already proven their advantages over granular fertilizers, these namely are prolonged action and maximum absorption of the active substance. So here is the question, what is the most effective way of using liquid fertilizers? Taking into consideration the reasons for transition to soil fertilizers, agronomists and farmers often point ...
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Sugarcane response to mill mud, fertilizer, and soybean nutrient sources on a sandy soil
Improving soil organic matter and soil fertility are important factors in the sustainability of sugarcane (Saccharum spp.) production. A 3-yr field trial was established in 2004 on a sandy Alfisol in Florida to compare the effect of organic and inorganic nutrient sources on sugarcane production. The three nutrient sources were (i) mill mud (filter cake, cachaza), (ii) local standard fertilizer, ...
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NPK compound fertilizer production line manufacturers talk about sulfur use methods
NPK compound fertilizer production line manufacturers often use sulfur to reduce soil pH value and improve saline alkali soil in agriculture. However, the use of sulfur as nutrient fertilizer in agricultural production has not attracted people's attention until recently. Sulfur is an inert, insoluble yellow crystalline solid. Commercially, it can be stored in the open air, and it remains ...
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Carbon sequestration by tillage, rotation, and nitrogen fertilization in a Mediterranean vertisol
Our objective was to determine the effect of tillage system, crop rotation, and N fertilization on soil organic carbon (SOC) storage in the 0- to 90-cm profile in a long-term (20-yr) experiment established in 1986 on a rainfed Mediterranean Vertisol in southern Spain. The treatments studied were: conventional tillage (CT) vs. no-tillage (NT); five crop rotations: wheat (Triticum aestivum ...
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Are you maxing out? Applying the Law of the Maximum gets the most from your fertility investment dollars
Avoid excess crop nutrients in your fertilizer strategy to maintain soil health and protect your pocketbook The push to produce higher yields per acre every year continues to weigh heavily on western Canadian farmers. That pressure is accompanied by economic and environmental concerns. Should you invest more money into crop nutrients to reach record yields? Will that investment pay off? Will ...
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Influence of nitrogen fertilizer on Cd and Zn accumulation in rapeseed (Brassica napus L.) biomass
Diffuse soil contamination with heavy metals and Cd in particular is a matter of serious concern. Application of conventional remediation methods usually is not feasible due to the large territories and relatively low heavy metal content. Thus, phytoremediation is seen as an alternative. Rapeseed was grown on Cd and Zn contaminated as well as clean soil under the greenhouse conditions. Solid and ...
By Biovala
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Soil properties and crop yields in response to mixed paper mill sludges, dairy cattle manure, and inorganic fertilizer application
The contribution of organic wastes to crop yields and soil fertility may be influenced by their composition and the soil type. This 6-yr study (2001–2006) evaluated the effects of repeated additions of mineral fertilizers (MF), mixed paper mill sludges (PMS) (18, 36, and 54 Mg ha–1), dairy cattle manure (DCM) (36 Mg ha–1) alone or with reduced mineral fertilizer (60% NPK) (RMF) and a control, on ...
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Prospect and production of coated controlled release fertilizer
Coated controlled release fertilizer The traditional chemical fertilizer, such as N or a certain proportion of N, P, K compound fertilizer, is coated with a special biological or chemical water soluble polymer film. Based on the characteristics of film thickness, particle radius, diffusion coefficient, nutrient composition and dissolution, the release rate and amount of fertilizer nutrient are ...
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Monitoring for the golden balance
On Herøya in Porsgrunn, Yara has an ammonia plant, three nitric acid plants and a calcium nitrate plant. Together the plants produce a wide range of fertilizers that meet the requirements for fertilization of crops under varying climatic conditions and on different soils. Half of the production at Porsgrunn goes to overseas markets, mainly in Asia. The rest goes to Europe. – Our ...
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How to Simplify your Test Plots and Maximize Investments
Remember the old days of running test plots? Stopping in the field to place marker flags and make the necessary changes. Then returning in the fall to — with any luck — find the flags and weigh each load. Not to mention the deskwork that followed to evaluate the results. And for me, with a full schedule that includes a 3,200-acre operation plus my wife and three kids, it wasn’t ...
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Main Granulating Methods of NPK Compound Fertilizer Production
NPK fertilizer can supply many kinds of nutrients needed by crops at the same time. The economic benefit is obvious. The production cost can be reduced by using compound fertilizer. Compound fertilizer is not easy to agglomerate, easy to store and use, and is widely welcomed. How to select granulator for NPK fertilizer production line? Several main granulation methods are introduced here. 1. ...
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Difference between the production machines of organic fertilizer and compound fertilizer
The internal quality of organic fertilizer mainly depends on raw material fermentation and product formula. The key factors affecting the fermentation of organic fertilizer production process are: microorganism, carbon nitrogen ratio, carbon phosphorus ratio, water content, pH value, aeration control. If one factor is not properly controlled, the whole fermentation will be affected, resulting in ...
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It’ll all be for the same purpose: to maximize the yield and take care of that soil
Brad McDougald jokes that farmers can always find something to complain about. “Doesn’t matter whether it’s too warm, too dry, too cold,” McDougald says with a chuckle. This year was a dry season in Drumheller, Alta., where his 2,500-acre farm produced about 40 per cent of its regular yield of wheat, canola, peas, lentils and barley. But for all the elements outside a ...
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Many Countries Reaching Diminishing Returns in Fertilizer Use
When German chemist Justus von Liebig demonstrated in 1847 that the major nutrients that plants removed from the soil could be applied in mineral form, he set the stage for the development of the fertilizer industry and a huge jump in world food production a century later. Growth in food production during the nineteenth century came primarily from expanding cultivated area. It was not until the ...
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Processing organic fertilizer by using crop straw
The crop straw organic fertilizer production line is advanced composting fermentation process, inoculates high-speed and high-efficiency fermentation bacteria, which makes the straw cellulose rapidly decompose and transform, and all kinds of pathogenic bacteria, weed seeds and aphid eggs are killed, and produce the bio-organic fertilizers with strong stability and full range of nutrient. We ...
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