The Experts below are selected from a list of 1412595 Experts worldwide ranked by ideXlab platform
Qingping Zhang - One of the best experts on this subject based on the ideXlab platform.
-
liming effects on soil ph and crop yield depend on lime material type Application Method and rate and crop species a global meta analysis
Journal of Soils and Sediments, 2019Co-Authors: Song Cui, Scott X Chang, Qingping ZhangAbstract:The aim of this meta-analysis was to investigate the interactive effects of environmental and managerial factors on soil pH and crop yield related to liming across different cropping systems on a global scale. This study examined the effects of liming rate, lime Application Method, and liming material type on various soil chemical properties and crop yield based on data collected from 175 published studies worldwide since 1980. The most important variables that drive changes in soil pH and crop yield were liming rate and crop species, respectively. Soil conditions, such as initial soil organic matter and soil pH, were more important for increasing soil pH in field-based experiments, while lime material type and Application Method were more important for improving crop yield. To effectively neutralize soil acidity, the optimum liming duration, rate, and material type were < 3 years, 3–6 Mg ha−1, and Ca (OH)2, respectively. Averaged across different crop species, the Application of CaO, CaCO3, Ca (OH)2, and CaMg (CO3)2 increased yield by 13.2, 34.3, 29.2, and 66.5%, respectively. This meta-analysis will help design liming management strategies to ameliorate soil acidity and thus improve crop yield in agroecosystems.
Shiwei Guo - One of the best experts on this subject based on the ideXlab platform.
-
effects of soil zinc availability nitrogen fertilizer rate and zinc fertilizer Application Method on zinc biofortification of rice
The Journal of Agricultural Science, 2016Co-Authors: Jiuxin Guo, Xumeng Feng, Guangli Tian, Ning Ling, J H Wang, Qirong Shen, Shiwei GuoAbstract:Rice ( Oryza sativa L.) is one of the most important cereal crops in the world and a potentially important source of zinc (Zn) in the diet. The improvement of Zn content of rice is a global challenge with implications for both rice production and human health. The objective of the present study was to identify the effects of nitrogen (N) fertilizer rates and Zn Application Methods on Zn content of rice by evaluating rice production on native soils with different Zn availabilities in 2010/11. The results indicated that Zn Application increased rice grain yield and Zn content in grains compared with the control; however, this effect was also affected by the native soil Zn availability, N fertilizer rate and Zn fertilizer Application Method. The native soil Zn status was the dominant factor influencing grain yield and grain Zn content in response to Zn fertilizer Application. Grain Zn content ranged from 19·74 to 26·93 mg/kg under the different Zn statuses. The results also indicated that Zn Application Method has a significant influence on grain yield. Application of Zn fertilizer to the soil was more effective than the foliar spray on rice grain yield; however, the foliar spray resulted in a greater increase in grain Zn content when compared with soil Application. Grain Zn content was affected by Application Method and displayed the following general trend: soil Application + foliar spray > foliar spray > soil Application. The experiments investigating the effect of N fertilizer rate combined with Zn Application Method showed a clear increase in both grain yield and Zn content as the N fertilizer level increased from 200 to 300 kg/ha. In addition, the results also indicated that N content and accumulation increased in all plant tissues, which suggests that Zn Application might influence the uptake and translocation of N in rice plants. These results suggest that soil Application in addition to a foliar spray of Zn should be considered as an important strategy to increase grain yield and grain Zn content of rice grown in soils with low background levels of Zn-associated diethylene triamine pentaacetate acid. Moreover, this process could be further strengthened by a high N Application rate. In conclusion, these results demonstrate the potential of optimizing nutrient management using Zn fertilizer to obtain higher grain yields and higher grain Zn content in fields with low native Zn status.
Song Cui - One of the best experts on this subject based on the ideXlab platform.
-
liming effects on soil ph and crop yield depend on lime material type Application Method and rate and crop species a global meta analysis
Journal of Soils and Sediments, 2019Co-Authors: Song Cui, Scott X Chang, Qingping ZhangAbstract:The aim of this meta-analysis was to investigate the interactive effects of environmental and managerial factors on soil pH and crop yield related to liming across different cropping systems on a global scale. This study examined the effects of liming rate, lime Application Method, and liming material type on various soil chemical properties and crop yield based on data collected from 175 published studies worldwide since 1980. The most important variables that drive changes in soil pH and crop yield were liming rate and crop species, respectively. Soil conditions, such as initial soil organic matter and soil pH, were more important for increasing soil pH in field-based experiments, while lime material type and Application Method were more important for improving crop yield. To effectively neutralize soil acidity, the optimum liming duration, rate, and material type were < 3 years, 3–6 Mg ha−1, and Ca (OH)2, respectively. Averaged across different crop species, the Application of CaO, CaCO3, Ca (OH)2, and CaMg (CO3)2 increased yield by 13.2, 34.3, 29.2, and 66.5%, respectively. This meta-analysis will help design liming management strategies to ameliorate soil acidity and thus improve crop yield in agroecosystems.
William R. Horwath - One of the best experts on this subject based on the ideXlab platform.
-
Nitrogen Use Efficiency of Coffee at the Vegetative Stage as Influenced by Fertilizer Application Method.
Frontiers in Plant Science, 2017Co-Authors: Alveiro Salamanca-jimenez, Timothy A. Doane, William R. HorwathAbstract:Nitrogen (N) is the most limiting nutrient for coffee production in Colombia. An adequate supply is especially important during the vegetative period of growth, since any deficiency during this short period is known to have lasting effects on subsequent coffee bean production. Urea fertilizer is commonly applied on the soil surface since steep slopes hamper incorporation into soil, a practice which increases the risk of N volatilization. Little information is available on N recovery during early growth stages under different fertilizer Application practices. The aim of this study was therefore to provide a comparison of 15N uptake during the early vegetative growth stage under surface-applied and incorporation practices at two contrasting locations. The highest proportion of plant N derived from fertilizer (Ndff) occurred 60 days following Application at the site with greater precipitation and soil organic matter, where surface Application also increased the Ndff in roots and stems after 120 days. Although fertilizer N supplied approximately 20-29% of total plant N after four months, this fertilizer-derived N corresponded on average to only 5% of the total Application, indicating that very little fertilizer (relative to how much is applied) reaches plants during this time. Apart from the difference in Ndff observed at the wetter site, there was no effect of Application Method on dry weight and macronutrient content in different plant components, root to shoot ratio, and leaf 13C content. However, site effects were registered for most of these measurements, with the exception of total nutrient uptake. Similarly to Ndff trends, lower root/shoot ratio and higher concentrations of N, K and Mg in aboveground biomass were found in the site with higher rainfall and soil organic matter, likely resulting from higher soil water and N availability. These findings provide new information useful as a direction for further research looking forward increasing NUE during the vegetative stage in Colombian coffee crops.
Scott X Chang - One of the best experts on this subject based on the ideXlab platform.
-
liming effects on soil ph and crop yield depend on lime material type Application Method and rate and crop species a global meta analysis
Journal of Soils and Sediments, 2019Co-Authors: Song Cui, Scott X Chang, Qingping ZhangAbstract:The aim of this meta-analysis was to investigate the interactive effects of environmental and managerial factors on soil pH and crop yield related to liming across different cropping systems on a global scale. This study examined the effects of liming rate, lime Application Method, and liming material type on various soil chemical properties and crop yield based on data collected from 175 published studies worldwide since 1980. The most important variables that drive changes in soil pH and crop yield were liming rate and crop species, respectively. Soil conditions, such as initial soil organic matter and soil pH, were more important for increasing soil pH in field-based experiments, while lime material type and Application Method were more important for improving crop yield. To effectively neutralize soil acidity, the optimum liming duration, rate, and material type were < 3 years, 3–6 Mg ha−1, and Ca (OH)2, respectively. Averaged across different crop species, the Application of CaO, CaCO3, Ca (OH)2, and CaMg (CO3)2 increased yield by 13.2, 34.3, 29.2, and 66.5%, respectively. This meta-analysis will help design liming management strategies to ameliorate soil acidity and thus improve crop yield in agroecosystems.