scholarly journals Potassium Fertilizer Recommendations for Sugarcane on Florida Organic Soils

EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
James Mabry McCray
Keyword(s):  
Organic Matter ◽  
Plant Growth ◽  
Agricultural Area ◽  
Organic Soils ◽  
Plant Nutrient ◽  
Potassium Fertilizer ◽  
Everglades Agricultural Area ◽  
Low Concentrations ◽  
Fertilizer Recommendations ◽  
Mineralization Of Organic Matter

Potassium is a primary plant nutrient that is required in large amounts by sugarcane. About 74% of the 400,000 acres of Florida sugarcane is grown on organic soils in the Everglades Agricultural Area. Potassium is not a component of organic matter and virgin Histosols contain very low concentrations of K, so release of K through mineralization of organic matter in these soils is not an adequate K source for plant growth. This 7-page document presents revised potassium fertilizer recommendations for sugarcane grown on Florida organic soils along with supporting information. Written by J. Mabry McCray, and published by the UF/IFAS Agronomy Department, February 2019.  http://edis.ifas.ufl.edu/ag428

scholarly journals Lettuce Cultivars Suitable for Use in Southern Florida

EDIS ◽  
2013 ◽  
Vol 2013 (10) ◽  
Author(s):  
Huangjun Lu
Keyword(s):  
Organic Soil ◽  
Agricultural Area ◽  
Organic Soils ◽  
Vegetable Crop ◽  
University Of Florida ◽  
Variety Trials ◽  
Fact Sheet ◽  
Everglades Agricultural Area ◽  
Southern Florida ◽  
The University

Lettuce is an economically important winter vegetable crop in Florida, with approximately 11,000 acres in production and a farm gate value of $40–$50 million annually. Florida lettuce production occurs mainly in the Everglades Agricultural Area (EAA). In recent years, research scientists at the University of Florida conducted variety trials that included the major cultivars of romaine and iceberg types. These trials were conducted on organic soil in the Everglades Agricultural Area and the IFAS-recommended practice was followed. This 3-page fact sheet describes lettuce cultivars suitable for production on organic soils in the EAA of southern Florida. Written by Huangjun Lu, and published by the UF Department of Horticultural Sciences, October 2013. http://edis.ifas.ufl.edu/hs1225

scholarly journals Effect of Peatland Siltation on Total and Labile C, N, P and K

2021 ◽  
Vol 13 (15) ◽  
pp. 8240
Author(s):  
Slawomir Smolczynski ◽  
Barbara Kalisz ◽  
Pawel Urbanowicz ◽  
Miroslaw Orzechowski
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Microwave Digestion ◽  
Hot Water ◽  
Biologically Active ◽  
Organic Soils ◽  
Labile C ◽  
Mineralization Of Organic Matter ◽  
C And N ◽  
Total P

Large areas of peatlands, in addition to the effect of drainage, were subjected to erosional process and were silted. The objective of the study was to verify whether siltation of peatlands hampers mineralization of remaining peat and alters labile C, N, P and K. Total C and N were measured on a CN analyzer, and total P and K on an ICP spectrometer after microwave digestion. The labile fractions of C, N, P and K were extracted with hot water and measured on the CN analyzer and ICP spectrometer. We noted that labile C, N, P and K concentrations in silted topsoil were lower than the values reported in unsilted topsoil. Higher concentration of labile compounds in peats is a signal of higher biological activity and mineralization of organic matter. A TOC/TP < 300 and TOC/TN of approximately 8 in topsoil suggested diminished mineralization and supported our hypothesis that siltation hampered mineralization of organic matter. The TOC/TK ratio proved to be a fine indicator of the state of organic soils siltation, which enabled the separation of unsilted peats from silted topsoil (on the base of value of 177). It can be assumed that the mineralization of peat layers is hampered by the above lying silted topsoil, which is less biologically active, having less oxygen, and therefore conserving underlying peats against oxidation.

scholarly journals Forage Grasses for Florida's Organic Soils

EDIS ◽  
2009 ◽  
Vol 2009 (2) ◽  
Author(s):  
Ikechukwu V. Ezenwa ◽  
Rosa M. Muchovej ◽  
Findlay M. Pate
Keyword(s):  
Agricultural Area ◽  
Organic Soils ◽  
Forage Grasses ◽  
Fact Sheet ◽  
Everglades Agricultural Area

Revised! SS-AGR-71, a 3-page fact sheet by I. V. Ezenwa, R. M. Muchovej, and F. M. Pate, is part of the Florida Forage Handbook. It highlights the two forage grasses recommended for the fertile organic soils of the Everglades Agricultural Area (EAA) — St. Augustinegrass and Limpograss. Includes references. Published by the UF Department of Agronomy, March 2009. SS-AGR-71/AA255: Forage Grasses for Florida's Organic Soils (ufl.edu)

scholarly journals Measuring Organic Matter in Everglades Wetlands and the Everglades Agricultural Area

EDIS ◽  
2009 ◽  
Vol 2009 (4) ◽  
Author(s):  
Alan L. Wright ◽  
Edward A. Hanlon
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Agricultural Area ◽  
Sources Of Information ◽  
Loss On Ignition ◽  
Fact Sheet ◽  
Everglades Agricultural Area ◽  
Soil And Water

SL-285, a 5-page illustrated fact sheet by Alan L. Wright and Edward A. Hanlon, recommends for growers, managers, and researchers the new and simple Loss-On-Ignition (LOI) test for determining the organic matter content of soils. Includes additional sources of information. Published by the UF Department of Soil and Water Sciences, April 2009. SL 285/SS498: Measuring Organic Matter in Everglades Wetlands and the Everglades Agricultural Area (ufl.edu)

RELATIONSHIPS BETWEEN COPPER CONTENTS, RATES OF SOIL RESPIRATION AND PHOSPHATASE ACTIVITIES OF SOME HISTOSOLS IN AN AREA OF SOUTHWESTERN QUEBEC IN THE SUMMER AND THE FALL

1978 ◽  
Vol 58 (2) ◽  
pp. 125-134 ◽  
Author(s):  
S. P. MATHUR ◽  
R. B. SANDERSON
Keyword(s):  
Organic Matter ◽  
Acid Phosphatase ◽  
Soil Respiration ◽  
Soil Enzymes ◽  
Organic Soils ◽  
Biochemical Activity ◽  
Phosphatase Activities ◽  
Mineralization Of Organic Matter ◽  
Different Levels ◽  
Phosphatase Enzyme

Samples from 17 fields of organic soils (Histosols) were collected on the same day between rows of crops in the summer of 1976 from the environs of Ste. Clothilde, Quebec. Thirty-three properties of the soils were examined for possible correlations. The copper contents of the samples were found to have statistically significant negative correlations with their rates of respiration which were measured as carbon lost as CO2 upon incubation at 21 ± 2 °C. The acid phosphatase enzyme contents in these Histosol samples at each of three different levels of soil biochemical activity were also similarly negatively correlated with their copper concentrations. The above results were confirmed almost without exception by the data obtained by similar analysis of seven samples collected from the same area in the fall of 1976 when the fields were bare. The results supported an earlier suggestion of Mathur and Rayment (1977) that copper application (at a few quintals/ha) be investigated as a means of mitigating the mineralization and subsidence of some organic soils. Apparently, the added Cu may inactivate some of the exocellular soil enzymes which normally contribute to the degradation and mineralization of organic matter.

Evaluation of Lettuce Cultivars for Production on Muck Soils in Southern Florida

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
German Sandoya ◽  
Huangjun Lu
Keyword(s):  
South Florida ◽  
Agricultural Area ◽  
Organic Soils ◽  
Everglades Agricultural Area ◽  
Commercial Crop ◽  
Southern Florida

Lettuce as a commercial crop is planted mainly in organic soils ("muck") in the Everglades Agricultural Area (EAA) in south Florida. This updated publication of the UF/IFAS Horticultural Sciences Department presents a summary of previous cultivar releases by UF/IFAS as well as a description of cultivars currently planted in the EAA. Written by German Sandoya and Huangjun Lu.https://edis.ifas.ufl.edu/hs1225

scholarly journals Best Management Practices in the Everglades Agricultural Area: Soil Testing

EDIS ◽  
2019 ◽  
Vol 2005 (7) ◽  
Author(s):  
Samira H. Daroub ◽  
Orlando A. Diaz ◽  
Timothy A. Lang ◽  
Ming Chen
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Cooperative Extension Service ◽  
Soil Testing ◽  
Agricultural Area ◽  
Publication Date ◽  
University Of Florida ◽  
Everglades Agricultural Area ◽  
Best Management ◽  
Fertilizer Recommendations

The purpose of this document is to outline the process of soil testing as an important tool for both fertilizer recommendations and as a BMP in this region. This EDIS article is one in a series which attempts to explain in easily understandable terms the implementation methods and rationale behind the main P load reducing BMPs employed on EAA farms. This document is Fact Sheet SL-225, one of a series of the Soil and Water Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date July 2005.  SL-225/SS445: Best Management Practices in the Everglades Agricultural Area: Soil Testing (ufl.edu)

A Study on the Farmers’ Awareness and Acceptance of Biofertilizers in Kottayam District

GIS Business ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 425-431
Author(s):  
Subin Thomas ◽  
Dr. M. Nandhini
Keyword(s):  
Organic Matter ◽  
Nitrogen Fixation ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Nutrient Cycle ◽  
Plant Growth Promoting ◽  
Promote Plant Growth ◽  
Growth Promoting ◽  
Structured Questionnaire ◽  
Area Data

Biofertilizers are fertilizers containing microorganisms that promote plant growth by improving the supply of nutrients to the host plant. The supply of nutrients is improved naturally by nitrogen fixation and solubilizing phosphorus. The living microorganisms in biofertilizers help in building organic matter in the soil and restoring the natural nutrient cycle. Biofertilizers can be grouped into Nitrogen-fixing biofertilizers, Phosphorous-solubilizing biofertilizers, Phosphorous-mobilizing biofertilizers, Biofertilizers for micro nutrients and Plant growth promoting rhizobacteria. This study conducted in Kottayam district was intended to identify the awareness and acceptance of biofertilizers among the farmers of the area. Data have been collected from 120 farmers by direct interviews with structured questionnaire.

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