scholarly journals Monitoreo de la Savia del Peciolo de Vegetales

EDIS ◽  
2020 ◽  
Vol 2020 (4) ◽  
Author(s):  
George Hochmuth ◽  
Maria Paz Kinslow
Keyword(s):  
Vegetable Crops ◽  
Spanish Translation ◽  
Petiole Sap

A medida que los productores y consultores comienzan a usar la tecnología de monitoreo de savia, surgen preguntas sobre los procedimientos del monitoreo de savia. Las siguientes guías deberían ayudar a las personas que actualmente usan o están interesadas en usar el monitoreo de savia. La mayoría de estas guías se han desarrollado a través de investigaciones en Florida, o se basan en la experiencia de campo. This is the Spanish translation of CIR1144/CV004, Plant Petiole Sap-Testing For Vegetable Crops. Written by George Hochmuth, translated by Maria Paz Kinslow, and published by the UF/IFAS Horticultural Sciences Department.

scholarly journals EFFECT OF WASHING AND CUTTING ON NO3-N AND K SAP CONCENTRATIONS ON VEGETABLE PETIOLES

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 508C-508
Author(s):  
David Studstill ◽  
Michela Farneselli ◽  
Eric Simonne ◽  
Bob Hochmuth
Keyword(s):  
Nutritional Status ◽  
Control Method ◽  
Average Concentration ◽  
Bell Pepper ◽  
Distilled Water ◽  
Vegetable Crops ◽  
Limited Information ◽  
Simple Method ◽  
Petiole Sap

Petiole sap testing using ion-specific electrodes is a simple method that can be used to guide in-season applications of N and K to vegetable crops. This method requires petiole sampling and sap extraction using a sap press. Because some vegetables are grown with foliar applications of N and/or K and because some crops have large petioles, petioles may need to be washed and/or cut before being pressed. Because limited information is available on the effect of washing/cutting on sap testing results, muskmelon, bell pepper and tomato petioles were used to test if washing/cutting reduced NO3-N and K concentrations and changed the subsequent interpretation of plant nutritional status. Washing for 30, 60, or 120 seconds in distilled water and cutting petioles before or after washing significantly reduced sap concentrations (p = 0.01 and p = 0.04 for NO3-N and K, respectively) in 7 of 12 tests when compared to the control method (petioles cut and not washed). The average concentration reductions between the control and the lowest value among all the washing/cutting treatments were 30% for NO3-N and 19% for K. These losses due to washing/cutting are likely to change the diagnosis of nutritional status from “sufficient” to “less than sufficient” and therefore may suggest the need for unnecessary fertilizer applications.

scholarly journals Research and Field Experiences with Petiole Sap Testing of Vegetables and Strawberries in Florida

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 909B-909
Author(s):  
George J. Hochmuth
Keyword(s):  
Nutrient Management ◽  
Field Experiences ◽  
Vegetable Crops ◽  
Nutrient Inputs ◽  
Fertilizer Placement ◽  
Current Test ◽  
Nitrate N ◽  
Testing Technology ◽  
Equipment Testing ◽  
Petiole Sap

Vegetable producers are under increasing pressure to minimize production inputs such as water and fertilizers. Research on fertilizer placement and scheduling, soil testing, and drip irrigation fertigation has provided technologies to enable vegetable growers to produce profitable yields of high-quality vegetables while reducing nutrient inputs. Plant tissue testing has been an integral part of nutrient management on the farm. Although plant sap testing has been evaluated for more than 70 years, only recently has testing technology been developed to the point where farm use is facilitated. Researchers in several states, including Florida, have evaluated various methods for determining nitrate-N and K concentrations in petiole sap. Researchers in Florida have developed petiole sap sufficiency ranges for the major vegetable crops and strawberries, and these guidelines are widely used by vegetable growers and crop consultants as an aid for making informed fertilization decisions. In this workshop, research results and field experiences with fresh sap testing for N and K will be discussed, including field test equipment, testing methods, and current test applications.

scholarly journals Efficiency Ranges for Nitrate-Nitrogen and Potassium for Vegetable Petiole Sap Quick Tests

1994 ◽  
Vol 4 (3) ◽  
pp. 218-222 ◽  
Author(s):  
G.J. Hochmuth
Keyword(s):  
Nitrate Nitrogen ◽  
Field Analysis ◽  
Vegetable Crops ◽  
Early Season ◽  
Late Season ◽  
Nitrate N ◽  
Petiole Sap ◽  
Leaf N

Petiole sap N and K quick tests offer fast and accurate in-field analysis for N and K and have been calibrated for some vegetable crops in Florida. This paper summarizes 10 years of research conducted in Florida on petiole sap testing for N and K. Petiole sap nitrate-N and K concentrations correlated highly with whole-leaf N and K concentrations and decreased through the season for all vegetable crops tested. Optimum early season fresh sap nitrate-N and K concentrations were highest for pepper, and optimum late-season concentrations were lowest for tomato. Petiole sap nitrate-N and K concentrations were not affected by storing petioles on ice for up to 16 h or freezing them for 24 h.

Thermal/electric energy generation and CO2 production for greenhouse facilities

2019 ◽  
Vol 2 (3) ◽  
pp. 141-151
Author(s):  
O. E. Gnezdova ◽  
E. S. Chugunkova
Keyword(s):  
Carbon Dioxide ◽  
Power Distribution ◽  
Power Plants ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Vegetable Crops ◽  
Carbon Dioxide Injection ◽  
Electricity Rates ◽  
Traditional Patterns ◽  
Generation Power

Introduction: greenhouses need microclimate control systems to grow agricultural crops. The method of carbon dioxide injection, which is currently used by agricultural companies, causes particular problems. Co-generation power plants may boost the greenhouse efficiency, as they are capable of producing electric energy, heat and cold, as well as carbon dioxide designated for greenhouse plants.Methods: the co-authors provide their estimates of the future gas/electricity rates growth in the short term; they have made a breakdown of the costs of greenhouse products, and they have also compiled the diagrams describing electricity consumption in case of traditional and non-traditional patterns of power supply; they also provide a power distribution pattern typical for greenhouse businesses, as well as the structure and the principle of operation of a co-generation unit used by a greenhouse facility.Results and discussion: the co-authors highlight the strengths of co-generation units used by greenhouse facilities. They have also identified the biological features of carbon dioxide generation and consumption, and they have listed the consequences of using carbon dioxide to enrich vegetable crops.Conclusion: the co-authors have formulated the expediency of using co-generation power plants as part of power generation facilities that serve greenhouses.

Bok Choy, an Asian Leafy Green Vegetable Emerging in Florida

EDIS ◽  
2019 ◽  
Vol 2019 (6) ◽  
pp. 5
Author(s):  
Hai Liu ◽  
Guodong Liu
Keyword(s):  
Graduate Students ◽  
Crop Production ◽  
Health Benefits ◽  
Extension Agents ◽  
Vegetable Crops ◽  
Green Vegetable ◽  
General Overview

Asian vegetable crops are rapidly expanding in Florida in the last decade due to their health benefits combined with their high profitability. These crops can help increase vegetable growers’ income and diversify Florida’s crop production, and they are new to most Floridians. This new 5-page article provides a general overview of bok choy for vegetable growers, crop consultants, certified crop advisors, Extension agents, and graduate students. Written by Hai Liu and Guodong Liu and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1337

Specific composition and structure of population phytopathogens of vegetable crops

2019 ◽  
Vol 326 (3) ◽  
pp. 76-78
Author(s):  
V.L. Nalobova ◽  
◽  
N.S. Opimah ◽  
M.V. Nalobova ◽  
I.V. Haponenka ◽  
...  
Keyword(s):  
Vegetable Crops ◽  
Specific Composition ◽  
Composition And Structure ◽  
Structure Of Population
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