The spatially explicit N fertilizer use and the crop-specific N fertilizer use datasets are available via an open data repository ( Yu, 2022). We argue that the reconstructed, spatially explicit N fertilizer use data in this study are expected to contribute to better understanding of biogeochemical cycles, including the simulations of GHG emissions and food production in China. However, our newly reconstructed data have not only corrected the existing biases and improved the spatial distribution but have also shown that vegetable and other crops (e.g., orchards), but not grain crops, are the most intensively fertilized crops in China, implying the importance of quantifying greenhouse gas (GHG) emissions from these croplands. The previous Food and Agriculture Organization (FAO) data-based N fertilizer products in China overestimated N use in low cropland coverage areas but underestimated N use in high cropland coverage areas. Despite the total N input decreasing by 9.1 % (2.84 Tg N yr −1) from 2014 to 2018, the N input from compound fertilizers has increased by 6 % (0.43 Tg N yr −1) during the corresponding period. Results showed that most of the N input was directly applied as N-only fertilizer, while the contribution from compound fertilizers has ranged between 16 % and 24 % since 1980. Resampled it to 5 km×5 km resolution, covering the period from 1952 to 2018 by integrating improved cropland maps. Here, we have reconstructed a historical, annual N fertilizer use dataset in China and Existing use of N fertilizers in China,Īs shown by digital maps, is usually coarse in resolution and intermittently covered with a biased gridded dataset. Although N fertilizer use has greatly contributed to the China's food production, this has also caused an unprecedented alteration in the biogeochemical cycles and endangered Water normally following application.China ranks in the highest position for nitrogen (N)įertilizer consumption in the world. GREENS, TEES AND TURF: Foliar apply 1-5 gallons in 50-100 gallons of water per acre, or for smaller areas apply 8-16 ounces in 5-10 gallons of water per 1000 square feet.Īpply every 7-14 days or as needed with sprayer. Jar test for compatibility prior to final tank mixing with other products. Dilute with water to ensure adequate coverage. Supports beneficial aerobic soil microbesĭerived From: Urea, Ammonium Nitrate, Soy Protein Hydrolysate, Phosphoric Acid, Potassium Hydroxide, and Potassium Nitrate.Provides high potassium for turf, shrubs, trees and flowers.Helps improve heat and drought tolerance.Regular use of GT PRO™ stimulates and supports dynamic cellular function and growth. Supplies essential nutrients commonly lost due to regular mowing and leaching. This formula promotes efficient cellular function, root growth, and strong vertical growth that is essential to managing high quality professional turf, tees, and greens. GT PRO™ greens and tees foliar fertilizer is a blend of potassium and primary nutrients. Field Studies-University Studies-Test Results.
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