Biomass-based multifunctional fertilizer system featuring controlled-release nutrient, water-retention and amelioration of soil

RSC Advances ◽  
2014 ◽  
Vol 4 (35) ◽  
pp. 18382 ◽  
Author(s):  
Xinggang Wang ◽  
Shaoyu Lü ◽  
Chunmei Gao ◽  
Xiubin Xu ◽  
Yi Wei ◽  
...  
Keyword(s):  
Controlled Release ◽  
Water Retention ◽  
Fertilizer System

scholarly journals Factors Affecting Nutrient Availability, Placement, Rate, and Application Timing of Controlled-release Fertilizers for Florida Vegetable Production Using Seepage Irrigation

2013 ◽  
Vol 23 (5) ◽  
pp. 553-562 ◽  
Author(s):  
Luther C. Carson ◽  
Monica Ozores-Hampton
Keyword(s):  
Soil Moisture ◽  
Controlled Release ◽  
Release Rate ◽  
Best Management Practices ◽  
Management Practices ◽  
Production Systems ◽  
Nutrient Release ◽  
Vegetable Production ◽  
Application Timing ◽  
Fertilizer System

This publication summarizes the factors influencing controlled-release fertilizer (CRF) nutrient release, CRF placement, CRF rate, and CRF application timing for the two major seepage-irrigated vegetable production systems (plasticulture and open-bed) in Florida. One of several best management practices for vegetable production, CRF helps growers achieve total maximum daily loads (TMDLs) established in Florida under the Federal Clean Water Act. Several factors intrinsic to CRF and to the vegetable production systems affect CRF nutrient release, making implementation of CRF fertility programs challenging. Increasing or decreasing soil temperature increases or decreases nutrient release from CRF. Soil moisture required for uninhibited plant growth is within the soil moisture range for optimum CRF nutrient release. CRF substrate affects nutrient release rate, which is inversely related to coating thickness and granule size. Soil microbes, soil texture, and soil pH do not influence nutrient release rate. Field placement of CRFs in seepage-irrigated, plasticulture, and open-bed production should be in the bottom mix at bed formation and soil incorporated or banded at planting, respectively. In plasticulture production systems, soil fumigation and delayed planting for continuous harvest may add a 14- to 21-day lag period between fertilization and planting, which along with different season lengths will influence CRF release length selected by growers. Using a hybrid fertilizer system in plasticulture production or incorporating CRF at planting in open-bed production allows for up to a 25% reduction in the nitrogen (N) rate needed.

Multilobular morphology: the key for biphase multitask nanogels

Soft Matter ◽  
2021 ◽  
Author(s):  
Ana Sofía Sonzogni ◽  
Shaghayegh Hamzehlou ◽  
Verónica D. G. Gonzalez ◽  
Jose Ramon Leiza ◽  
Roque J Minari
Keyword(s):  
Controlled Release ◽  
Water Retention ◽  
Biological Fluids ◽  
High Water ◽  
High Loading ◽  
Leading Role

Nanogels have a leading role in controlled release systems because they offer high water retention resulting in high loading capabilities, stability in biological fluids and biocompatibility. In this scenario, every...

Designing chitosan based eco-friendly multifunctional soil conditioner systems with urea controlled release and water retention

2019 ◽  
Vol 223 ◽  
pp. 115040 ◽  
Author(s):  
Manuela Maria Iftime ◽  
Gabriela Liliana Ailiesei ◽  
Elena Ungureanu ◽  
Luminita Marin
Keyword(s):  
Controlled Release ◽  
Water Retention ◽  
Soil Conditioner

Preparation and characterization of triple polymer-coated controlled-release urea with water-retention property and enhanced durability

2010 ◽  
Vol 120 (4) ◽  
pp. 2103-2111 ◽  
Author(s):  
Shuming Tao ◽  
Jun Liu ◽  
Kemo Jin ◽  
Xiaoyun Qiu ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Controlled Release ◽  
Water Retention ◽  
Controlled Release Urea
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