Soil Water Can Affect Release Patterns of Controlled‐Release Fertilizers

CSA News ◽  
2021 ◽  
Keyword(s):  
Controlled Release ◽  
Soil Water ◽  
Controlled Release Fertilizers

Understanding soil water effects on nitrogen release from controlled‐release fertilizers

2020 ◽  
Author(s):  
Kirsten Verburg ◽  
Keith L. Bristow ◽  
Gordon D. McLachlan ◽  
Tim H. Muster ◽  
Jacinta M. Poole ◽  
...  
Keyword(s):  
Controlled Release ◽  
Soil Water ◽  
Nitrogen Release ◽  
Water Effects ◽  
Controlled Release Fertilizers

Irrigation Volume, Application, and Controlled-release Fertilizer II. Effect on Substrate Solution Nutrient Concentration and Water Efficiency in Containerized Plant Production

1998 ◽  
Vol 16 (3) ◽  
pp. 182-188
Author(s):  
Kelly M. Groves ◽  
Stuart L. Warren ◽  
Ted E. Bilderback
Keyword(s):  
Controlled Release ◽  
Irrigation Efficiency ◽  
Plant Production ◽  
Water Efficiency ◽  
Solution Ph ◽  
Entire Study ◽  
Once Daily ◽  
Substrate Solution ◽  
Irrigation Volume ◽  
Controlled Release Fertilizers

Abstract Rooted cuttings of Cotoneaster dammeri Schneid ‘Skogholm’ and seedlings of Rudbeckia fulgida Ait. ‘Goldsturm’ were potted into 3.8 liter (4 qt) containers in a pine bark:sand (8:1 by vol) substrate incorporated with 3.5 g (0.12 oz) N per container provided by one of the following five controlled-release fertilizers (CRFs): Meister 21N–3.5P–11.1K (21–7–14), Osmocote 24N–2.0P–5.6K (24–4–7), Scotts 23N–2.0P–6.4K (23–4–8), Sustane 5N–0.9P–3.3K (5–2–4) or Woodace 21N–3.0P–9.5K (21–6–12). Two hundred ml (0.3 in), 400 ml (0.6 in), 800 ml (1.1 in) or 1200 ml (1.7 in) of water was applied once daily (single) or in two equal applications with a 2 hr interval between applications (cyclic). Substrate solutions were collected from containers of cotoneaster 15, 32, 45, 60, 74, 90, 105, and 119 days after initiation (DAI). Irrigation efficiency [(water applied − water leached) ÷ water applied] was determined on the same days. Cyclic application improved irrigation efficiency at 800 ml (1.1 in) and 1200 ml (1.7 in) ≈ 27% compared to a single application. Irrigation efficiencies averaged over the season were 95%, 84%, 62%, and 48% for cotoneaster and 100%, 90%, 72%, and 51% for rudbeckia at 200 ml (0.3 in), 400 ml (0.6 in), 800 ml (1.1 in) and 1200 ml (1.7 in), respectively. NH4-N and NO3-N and PO4-P concentrations in substrate solution decreased with increasing irrigation volume regardless of CRF. Substrate NH4-N concentration decreased throughout the season with most CRFs below 5 mg/liter by 90 DAI. CRFs mainly affected substrate NH4-N and NO3-N concentrations when irrigated with 200 ml (0.3 in) or 400 ml (0.6 in). Substrate NH4-N, NO3-N, and PO4-P solution concentrations were similar for all CRFs at irrigation volume of 1200 ml (1.7 in). Osmocote, Scotts, and Woodace maintained relatively constant substrate solution levels of PO4-P through 60 DAI. By 90 DAI, substrate PO4-P levels were similar regardless of irrigation volume or CRF. Substrate PO4-P concentrations were never in the recommended range of 5 to 10 mg/liter when irrigated with 800 ml (1.1 in) or 1200 ml (1.7 in) regardless of CRF. Solution pH remained in the recommended range of 5.0 to 6.0 for all irrigation volumes and CRFs throughout the entire study with the exception of Sustane.

scholarly journals Effects of different types of slow- and controlled-release fertilizers on rice yield

2021 ◽  
Vol 20 (6) ◽  
pp. 1503-1514 ◽  
Author(s):  
Qiong WU ◽  
Yu-hui WANG ◽  
Yan-feng DING ◽  
Wei-ke TAO ◽  
Shen GAO ◽  
...  
Keyword(s):  
Controlled Release ◽  
Rice Yield ◽  
Different Types ◽  
Controlled Release Fertilizers

scholarly journals A Rapid Technique for Prediction of Nutrient Release from Polymer Coated Controlled Release Fertilizers

2011 ◽  
Vol 01 (02) ◽  
pp. 40-44 ◽  
Author(s):  
Shengsen Wang ◽  
Ashok K. Alva ◽  
Yuncong Li ◽  
Min Zhang
Keyword(s):  
Controlled Release ◽  
Nutrient Release ◽  
Rapid Technique ◽  
Controlled Release Fertilizers

scholarly journals Effects of Intensive Nitrogen Fertilization During Stem Elongation by Controlled-release Fertilizers on Yield and Grain Protein Content of Wheat for Bread

2021 ◽  
Vol 90 (1) ◽  
pp. 18-28
Author(s):  
Keisuke Mizuta ◽  
Hideki Araki ◽  
Kazuhiro Nakamura ◽  
Hitoshi Matsunaka ◽  
Tadashi Takahashi
Keyword(s):  
Controlled Release ◽  
Protein Content ◽  
Nitrogen Fertilization ◽  
Stem Elongation ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Controlled Release Fertilizers

Environmentally Friendly Slow Release Nano-Chemicals in Agriculture

2019 ◽  
pp. 220-240 ◽  
Author(s):  
Richa Kothari ◽  
Khursheed Ahmad Wani
Keyword(s):  
Controlled Release ◽  
Sustainable Agriculture ◽  
Nutrient Uptake ◽  
Crop Yield ◽  
Slow Release ◽  
Environmentally Friendly ◽  
Slow Discharge ◽  
The World ◽  
Growing Population ◽  
Controlled Release Fertilizers

Agriculture is important for people all over the world in order to obtain food to sustain the ever-growing population. However, the current practices for obtaining more and more food has several environmental challenges. Hence, new environmentally friendly fertilizers, herbicides, and pesticides have been developed that enhance crop yield by facilitating maximum nutrient uptake by the application of nanotechnology that will help in promoting sustainable agriculture by the slow or controlled release fertilizers. This slow discharge encourages improved delivery of nutrients to the plants that further speeds up early germination, fast growth, and high nutritional level. The current study is aimed to review nano-chemicals used in agriculture that have been developed by the researchers all over the world.

scholarly journals Growth effects of the application of new controlled-release fertilizers on Phalaenopsis spp.

2018 ◽  
Vol 61 (6) ◽  
pp. 625-633
Author(s):  
Byung Yun Ha ◽  
Hae Rim Kim ◽  
Doe Hyun Kim ◽  
Je Wook Woo ◽  
Young Joon Jo ◽  
...  
Keyword(s):  
Controlled Release ◽  
Growth Effects ◽  
Controlled Release Fertilizers
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