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Yantai Gan - One of the best experts on this subject based on the ideXlab platform.

  • Increased maize yield using slow-release attapulgite-coated Fertilizers
    Agronomy for Sustainable Development, 2014
    Co-Authors: Yu Guan, Chao Song, Yantai Gan
    Abstract:

    Slow-release Fertilizers could improve the productivity of field crops and reduce environmental pollution. So far, no slow-release Fertilizers are suited for maize cultivation in semiarid areas of China. Therefore, we tested attapulgite-coated Fertilizers. Attapulgite-coated Fertilizers were prepared by dividing chemical Fertilizers into three parts according to the nutrient demand of maize in its three main growth stages and coating each part with a layer of attapulgite. This design is novel and unique, satisfying the demands of maize throughout the whole growing season with slow release of nutrients from the coated layers. A field experiment was conducted in 2010 and 2011, using three fertilizer rates, in kg/ha: 94.22 nitrogen (N) and 22.49 phosphorus (P), 139.09 N and 38.98 P, and 254.23 N and 50.98 P. Five types of Fertilizers were compared: 20 and 30 % attapulgite-coated chemical fertilizer, 20 and 30 % attapulgite-mixed chemical fertilizer, and chemical fertilizer only. The results show that the soil mineral N and available P of attapulgite-coated fertilizer has a slow-release behavior that allows a better synchronization between nutrient availability and plant needs. Attapulgite-coated fertilizer increased the grain yield by 15.1–18.4 %. The use of attapulgite-coated Fertilizers also improved partial factor productivity of N fertilizer by 10.0–26.7 % and P fertilizer by 11.0–26.7 %, compared with the control fertilized without coated formulates. Given their good performance, the attapulgite-coated Fertilizers could be a promising alternative slow-release fertilizer for sustainable agriculture in semiarid areas.

Yu Guan - One of the best experts on this subject based on the ideXlab platform.

  • Increased maize yield using slow-release attapulgite-coated Fertilizers
    Agronomy for Sustainable Development, 2014
    Co-Authors: Yu Guan, Chao Song, Yantai Gan
    Abstract:

    Slow-release Fertilizers could improve the productivity of field crops and reduce environmental pollution. So far, no slow-release Fertilizers are suited for maize cultivation in semiarid areas of China. Therefore, we tested attapulgite-coated Fertilizers. Attapulgite-coated Fertilizers were prepared by dividing chemical Fertilizers into three parts according to the nutrient demand of maize in its three main growth stages and coating each part with a layer of attapulgite. This design is novel and unique, satisfying the demands of maize throughout the whole growing season with slow release of nutrients from the coated layers. A field experiment was conducted in 2010 and 2011, using three fertilizer rates, in kg/ha: 94.22 nitrogen (N) and 22.49 phosphorus (P), 139.09 N and 38.98 P, and 254.23 N and 50.98 P. Five types of Fertilizers were compared: 20 and 30 % attapulgite-coated chemical fertilizer, 20 and 30 % attapulgite-mixed chemical fertilizer, and chemical fertilizer only. The results show that the soil mineral N and available P of attapulgite-coated fertilizer has a slow-release behavior that allows a better synchronization between nutrient availability and plant needs. Attapulgite-coated fertilizer increased the grain yield by 15.1–18.4 %. The use of attapulgite-coated Fertilizers also improved partial factor productivity of N fertilizer by 10.0–26.7 % and P fertilizer by 11.0–26.7 %, compared with the control fertilized without coated formulates. Given their good performance, the attapulgite-coated Fertilizers could be a promising alternative slow-release fertilizer for sustainable agriculture in semiarid areas.

Chao Song - One of the best experts on this subject based on the ideXlab platform.

  • Increased maize yield using slow-release attapulgite-coated Fertilizers
    Agronomy for Sustainable Development, 2014
    Co-Authors: Yu Guan, Chao Song, Yantai Gan
    Abstract:

    Slow-release Fertilizers could improve the productivity of field crops and reduce environmental pollution. So far, no slow-release Fertilizers are suited for maize cultivation in semiarid areas of China. Therefore, we tested attapulgite-coated Fertilizers. Attapulgite-coated Fertilizers were prepared by dividing chemical Fertilizers into three parts according to the nutrient demand of maize in its three main growth stages and coating each part with a layer of attapulgite. This design is novel and unique, satisfying the demands of maize throughout the whole growing season with slow release of nutrients from the coated layers. A field experiment was conducted in 2010 and 2011, using three fertilizer rates, in kg/ha: 94.22 nitrogen (N) and 22.49 phosphorus (P), 139.09 N and 38.98 P, and 254.23 N and 50.98 P. Five types of Fertilizers were compared: 20 and 30 % attapulgite-coated chemical fertilizer, 20 and 30 % attapulgite-mixed chemical fertilizer, and chemical fertilizer only. The results show that the soil mineral N and available P of attapulgite-coated fertilizer has a slow-release behavior that allows a better synchronization between nutrient availability and plant needs. Attapulgite-coated fertilizer increased the grain yield by 15.1–18.4 %. The use of attapulgite-coated Fertilizers also improved partial factor productivity of N fertilizer by 10.0–26.7 % and P fertilizer by 11.0–26.7 %, compared with the control fertilized without coated formulates. Given their good performance, the attapulgite-coated Fertilizers could be a promising alternative slow-release fertilizer for sustainable agriculture in semiarid areas.

J G Davis - One of the best experts on this subject based on the ideXlab platform.

  • greenhouse gas emissions from solid and liquid organic Fertilizers applied to lettuce
    Journal of Environmental Quality, 2016
    Co-Authors: Phasita Toonsiri, Stephen J Del Grosso, Arina Sukor, J G Davis
    Abstract:

    Improper application of nitrogen (N) fertilizer and environmental factors can cause the loss of nitrous oxide (NO) to the environment. Different types of Fertilizers with different C/N ratios may have different effects on the environment. The focus of this study was to evaluate the effects of environmental factors and four organic Fertilizers (feather meal, blood meal, fish emulsion, and cyano-fertilizer) applied at different rates (0, 28, 56, and 112 kg N ha) on NO emissions and to track CO emissions from a lettuce field ( L.). The study was conducted in 2013 and 2014 and compared preplant-applied solid Fertilizers (feather meal and blood meal) and multiple applications of liquid Fertilizers (fish emulsion and cyano-fertilizer). Three days a week, NO and CO emissions were measured twice per day in 2013 and once per day in 2014 using a closed-static chamber, and gas samples were analyzed by gas chromatography. Preplant-applied solid Fertilizers significantly increased cumulative NO emissions as compared with control, but multiple applications of liquid Fertilizers did not. Emission factors for NO ranged from 0 to 0.1% for multiple applications of liquid Fertilizers and 0.6 to 11% for preplant-applied solid Fertilizers, which could be overestimated due to chamber placement over fertilizer bands. In 2014, solid Fertilizers with higher C/N ratios (3.3-3.5) resulted in higher CO emissions than liquid Fertilizers (C/N ratio, 0.9-1.5). Therefore, organic farmers should consider the use of multiple applications of liquid Fertilizers as a means to reduce soil greenhouse gas emissions while maintaining high yields.

Ayeni Leye Samuel - One of the best experts on this subject based on the ideXlab platform.

  • Assessment of Fertilizer Management Practices among Yam Farmers and Consumers Perception on the Quality of Yam Grown with Fertilizers
    2015
    Co-Authors: Journals Iosr, Justina Oghenerioborue Ogboru, Ayeni Leye Samuel
    Abstract:

    Yam (Dioscorea spp) is one of the staple crops grown in southern Nigeria that could be put into various uses to reduce food insecurity in the country. A field survey was carried out to assess Fertilizers management in increasing yam production and buyers perception on the quality of yam grown with the Fertilizers in Atakumosa Local Government Area of Osun State. Six villages and 20 farmers were randomly selected from each village to make a total sum of 120 respondents. Structured questionnaire and oral interview were used. likered square was used to assess the buyers perception on yam quality grown with the fertilizer. In the study area, 100% of the respondents applied mineral Fertilizers to supplement soil nutrients. Out of the 120 yam farmers, 40, 32, 16 and 12 farmers used broadcasting, ring, row and spot methods of Fertilizers application respectively. In the sampled area, no respondent was aware of organomineral fertilizer. 100% of the respondents preferred yam grown without fertilizer to yam grown with fertilizer in term of taste, storability, poundability and colour. The buyer perception about the quality of yam grown with mineral fertilizer may hinder mass yam production. Educating the populace on proper fertilizer management in increasing yam production through Agricultural and Home management Extension Services is imperative. Government should continue to encourage farmers by making Fertilizers available at subsidized rate. Key word: pounded yam, yam storage, colour, cropping system, mineral fertilizer, organic fertilizer and organmineral fertilizer