Simultaneous Removal of Cu and Cd From Soil and Water in Paddy Fields by Native Periphyton

Dynamics Of Ammonium And Nitrate In Semi Organic Rice Fields For Local And Hybrid Rice Plants In Subak Jatiluwih, Tabanan Regency. The study was conducted to determine the dynamics of ammonium and nitrate and time subsequent fertilization in paddy fields with local and hybrid rice. Soil and water samples in two replications were taken each the two paddy fields periodically, namely during the tillage (DTT), 0, 7, 14, 21, 28, 42, 56, 70, 84, 98, and 112 days after planting (DAP). Ammonium and nitrate levels were analyzed by Macro Kjeldahl method. The results showed that the dynamics of ammonium and soil nitrate were different in two rice varieties. The highest ammonium content of local rice at the age of 7 DAP rice and the highest nitrate content at age 14 DAP. Ammonium and nitrate levels are highest in hybrid rice fields at 28 DAP rice age. The lowest ammonium and nitrate levels in two different varieties of rice land, namely the lowest local rice varieties at the age 28 DAP, whereas in hybrid rice land at age of 98 DAP. The results of this study indicate that supplementation of urea can be carried out at the age of 21 and 98 DAP for local rice varieties, and at the age of 14 DAP and 42 DAP for hybrid rice varieties.

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Managing Landscape Irrigation to Avoid Soil and Nutrient Losses

EDIS ◽

10.32473/edis-ss586-2013 ◽

2013 ◽

Vol 2013 (11) ◽

Author(s):

George Hochmuth ◽

Laurie Trenholm ◽

Don Rainey ◽

Esen Momol ◽

Claire Lewis ◽

...

Keyword(s):

Natural Environment ◽

Management Practices ◽

Root Zone ◽

Irrigation Management ◽

Critical Factor ◽

Nutrient Losses ◽

County Agents ◽

The Right ◽

Soil And Water

Proper irrigation management is critical to conserve and protect water resources and to properly manage nutrients in the home landscape. How lawns and landscapes are irrigated directly impacts the natural environment, so landscape maintenance professionals and homeowners must adopt environmentally-friendly approaches to irrigation management. After selecting the right plant for the right place, water is the next critical factor to establish and maintain a healthy lawn and landscape. Fertilization is another important component of lawn and landscape maintenance, and irrigation must be applied correctly, especially following fertilization, to minimize potential nutrient losses. This publication supplements other UF/IFAS Extension publications that also include information on the role of soil and the root zone in irrigation management. This publication is designed to help UF/IFAS Extension county agents prepare materials to directly address nutrient losses from lawns and landscapes caused by inadequate irrigation management practices. This 6-page fact sheet was written by George Hochmuth, Laurie Trenholm, Don Rainey, Esen Momol, Claire Lewis, and Brian Niemann, and published by the UF Department of Soil and Water Science, October 2013. http://edis.ifas.ufl.edu/ss586

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Soil Sampling Procedures

EDIS ◽

10.32473/edis-ss667-2020 ◽

2020 ◽

Vol 2020 (1) ◽

Author(s):

Davie Kadyampakeni ◽

Kelly Morgan ◽

Arnold Schumann ◽

Rhuanito Ferrarezi ◽

Jamie D Burrow

Keyword(s):

Soil Sampling ◽

Test Results ◽

Fertilization Program ◽

Fact Sheet ◽

Standard Procedures ◽

Sampling Procedures ◽

Soil And Water

To achieve optimal grove nutrition, citrus growers must test grove soil before beginning any fertilization program. Standard procedures for sampling, preparing, and analyzing soil should be followed for meaningful interpretations of the test results and accurate recommendations. This new two-page fact sheet, published by the UF/IFAS Department of Soil and Water Sciences, provides illustrated soil sampling procedures and tables to aid in basic interpretation of lab results. Written by Davie Kadyampakeni, Kelly Morgan, Arnold Schumann, and Rhuanito S. Ferrarezi.https://edis.ifas.ufl.edu/ss667

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