scholarly journals Implementing the Five Rs of Nutrient Stewardship for Fertigation in Florida’s Vegetable Production

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Mary Dixon ◽  
Guodong Liu
Keyword(s):  
Crop Production ◽  
Ammonia Volatilization ◽  
Nutrient Management ◽  
Greenhouse Gas Emission ◽  
Nitrogen Loss ◽  
Vegetable Production ◽  
Accuracy And Precision ◽  
Sustainable Nutrient Management ◽  
Commercial Crop ◽  
Source Rate

The five Rs of nutrient stewardship is a mnemonic device used to emphasize accuracy and precision for nutrient management so as to apply the (1) right source of fertilizer at the (2) right rate at the (3) right time in the (4) right place with the (5) right irrigation. Because the majority of Florida's soils are sandy, this fifth R is imperative for sustainable nutrient management for commercial crop production. These main points of nutrient management (source, rate, time, place, irrigation) may help enhance sustainability by reducing pollution by eutrophication, nitrogen loss through ammonia volatilization, and climate change from soil greenhouse gas emission. This new 8-page publication of the UF/IFAS Horticultural Sciences Department was written by Mary Dixon and Guodong Liu.https://edis.ifas.ufl.edu/hs1386

Application of Surfactants in Commercial Crop Production for Water and Nutrient Management in Sandy Soil

EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
Guodong Liu ◽  
Monica Ozores-Hampton ◽  
Gene McAvoy ◽  
Ben Hogue ◽  
Crystal A. Snodgrass
Keyword(s):  
Sandy Soil ◽  
Large Volume ◽  
Crop Production ◽  
Nutrient Management ◽  
Sandy Soils ◽  
Fruit Production ◽  
Water Repellent ◽  
Application Of Surfactants ◽  
Fact Sheet ◽  
Commercial Crop

Water-repellent soils are unable to effectively adsorb or retain water. On these soils, water may simply pool on the surface or may move down preferred pathways, leaving large amounts of soil dry even when a large volume of water is applied. Thus, managing water and nutrients in sandy soils is often challenging. This 6-page fact sheet provides an overview of surfactants and how they may be used to better manage water and nutrients in sandy soils for vegetable and fruit production. Written by Guodong Liu, Monica Ozores-Hampton, Gene McAvoy, Ben Hogue, and Crystal A. Snodgrass, and published by the UF Department of Horticultural Sciences, December 2013. http://edis.ifas.ufl.edu/hs1230

scholarly journals Organic Vegetable Crop Production in Controlled Environments Using Soilless Media

2017 ◽  
Vol 27 (2) ◽  
pp. 166-170 ◽  
Author(s):  
Mary A. Rogers
Keyword(s):  
Crop Production ◽  
Nutrient Management ◽  
Production Systems ◽  
Technical Information ◽  
Future Research ◽  
Vegetable Production ◽  
Soilless Media ◽  
Organic Vegetable Production ◽  
Controlled Environments ◽  
National Organic Program

Organic vegetables produced in greenhouses and other controlled environments may fill a unique market niche as consumers demand local, high vegetables year round. However, limited technical information supports these production systems and more research is needed to provide recommendations for appropriate substrate mixes and nutrient management. Compost can be used as a substitute for peat-based media, and research results vary widely based on feedstock, compost method, and proportion used in mixes. Most studies consider compost in terms of peat-substitute or replacement and not as a source of fertility in soilless systems. Common challenges in using compost in soilless media are due to immaturity of the compost, poor water holding capacity, and unbalanced salinity and pH. It is possible to certify organic soilless production systems; however, the National Organic Program (NOP) of the U.S. Department of Agriculture has not yet provided clear rules and requirements supporting these systems. The objective of this article is to review the literature on soilless organic vegetable production, summarize results from the more widely studied topic of vegetable transplant production, and point to future research for organic agriculture.

scholarly journals Conversions of parts per million on soil test reports to pounds per acre

EDIS ◽  
2013 ◽  
Vol 2013 (10) ◽  
Author(s):  
Guodong Liu ◽  
Yuncong Li ◽  
Aparna Gazula
Keyword(s):  
Water Management ◽  
Crop Production ◽  
Nutrient Management ◽  
Soil Testing ◽  
Soil Test ◽  
Vegetable Production ◽  
Fact Sheet ◽  
Conversion Method ◽  
Simple Conversion

December 18th, 2013 Soil testing and the resulting fertilization recommendations are critical for appropriate nutrient management in commercial vegetable production, but growers and soil experts sometimes speak different languages. This 8-page fact sheet provides a simple conversion method for crop consultants, crop advisors, growers, students, and researchers who are interested in nutrient and water management of crop production. Written by Guodong Liu, Yuncong Li, and Aparna Gazula, and published by the UF Department of Horticultural Sciences, August 2013. http://edis.ifas.ufl.edu/hs1229

scholarly journals Zeolite and Vermiculite as Inorganic Soil Amendments Modify Shoot-Root Allocation, Mineral Nutrition, Photosystem II Activity and Gas Exchange Parameters of Chestnut (Castanea sativa Mill) Plants

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 109
Author(s):  
Theocharis Chatzistathis ◽  
Evgenia Papaioannou ◽  
Anastasia Giannakoula ◽  
Ioannis E. Papadakis
Keyword(s):  
Nutrient Management ◽  
Soil Amendments ◽  
Castanea Sativa ◽  
Gas Exchange Parameters ◽  
Soil P ◽  
Fertilization Rates ◽  
Sustainable Nutrient Management ◽  
Castanea Sativa Mill ◽  
High Fertilization ◽  
Exchange Parameters

One of the most challenging topics for the sustainable agriculture is how to decrease high fertilization rates. A pot experiment, exploring the effects of zeolite (ZEO) and/or vermiculite (VER) as soil amendments, comparing to the soil application of a controlled release fertilizer (CRF), was realized in chestnut plants. Various parameters related to soil fertility, and plant growth, nutrition, and physiology were investigated to gain knowledge towards more sustainable management. After ZEO application and in comparison to CRF, an impressive boost in soil K was achieved. Moreover, soil P and Zn levels were higher in the VER-treated soil, compared to CRF. Leaf K and Ca concentrations were significantly higher in ZEO, compared to the VER treatment; the highest foliar N and Zn concentrations were measured in CRF and VER, respectively. However, significantly lower foliar Mn and Cu were found in VER. The highest root biomass produced in the ZEO treated plants. For most nutrients, their total uptake per plant was higher in CRF and ZEO. Finally, photosynthetic rates were higher in VER (mainly due to non-stomatal factors) and CRF (mainly due to stomatal factors). Our data open a discussion towards the application of ZEO and/or VER as soil amendments in chestnut nurseries and orchards, aiming at partially decreasing fertilization rates and boosting sustainable nutrient management.

scholarly journals Remote Control of Greenhouse Vegetable Production with Artificial Intelligence—Greenhouse Climate, Irrigation, and Crop Production

Sensors ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1807 ◽  
Author(s):  
Silke Hemming ◽  
Feije de Zwart ◽  
Anne Elings ◽  
Isabella Righini ◽  
Anna Petropoulou
Keyword(s):  
Artificial Intelligence ◽  
Crop Production ◽  
Vegetable Production ◽  
Digital Interface ◽  
Greenhouse Climate ◽  
Fresh Food ◽  
Net Profit ◽  
Greenhouse Vegetable ◽  
Process Computer ◽  
Cucumber Yield

The global population is increasing rapidly, together with the demand for healthy fresh food. The greenhouse industry can play an important role, but encounters difficulties finding skilled staff to manage crop production. Artificial intelligence (AI) has reached breakthroughs in several areas, however, not yet in horticulture. An international competition on “autonomous greenhouses” aimed to combine horticultural expertise with AI to make breakthroughs in fresh food production with fewer resources. Five international teams, consisting of scientists, professionals, and students with different backgrounds in horticulture and AI, participated in a greenhouse growing experiment. Each team had a 96 m2 modern greenhouse compartment to grow a cucumber crop remotely during a 4-month-period. Each compartment was equipped with standard actuators (heating, ventilation, screening, lighting, fogging, CO2 supply, water and nutrient supply). Control setpoints were remotely determined by teams using their own AI algorithms. Actuators were operated by a process computer. Different sensors continuously collected measurements. Setpoints and measurements were exchanged via a digital interface. Achievements in AI-controlled compartments were compared with a manually operated reference. Detailed results on cucumber yield, resource use, and net profit obtained by teams are explained in this paper. We can conclude that in general AI performed well in controlling a greenhouse. One team outperformed the manually-grown reference.

scholarly journals 2020–2021 Vegetable Production Handbook: Chapter 6. Cole Crop Production

EDIS ◽  
2020 ◽  
Author(s):  
Lincoln Zotarelli ◽  
Peter J. Dittmar ◽  
Nicholas S. Dufault ◽  
Bonnie Wells ◽  
Johan Desaeger ◽  
...  
Keyword(s):  
Chinese Cabbage ◽  
Crop Production ◽  
Vegetable Production ◽  
Cole Crops ◽  
Cole Crop

This chapter covers production of cole crops and Asian crucifers, including broccoli, cabbage, cauliflower, Chinese broccoli, Chinese cabbage, Chinese mustard (bok choy), kohlrabi, lobok/daikon, collards, kale, mustard, and turnip.

scholarly journals Learning of a mimic odor combined with nectar nonsugar compounds enhances honeybee pollination of a commercial crop

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Cecilia Estravis-Barcala ◽  
Florencia Palottini ◽  
Walter M. Farina
Keyword(s):  
Crop Production ◽  
Floral Scent ◽  
Seed Mass ◽  
Hybrid Seed Production ◽  
Memory Retention ◽  
Foraging Activity ◽  
Pollination Services ◽  
Floral Odor ◽  
Commercial Crop ◽  
Increasing Demand

AbstractThe increasing demand on pollination services leads food industry to consider new strategies for management of pollinators to improve their efficiency in agroecosystems. Recently, it was demonstrated that feeding beehives food scented with an odorant mixture mimicking the floral scent of a crop (sunflower mimic, SM) enhanced foraging activity and improved recruitment to the target inflorescences, which led to higher density of bees on the crop and significantly increased yields. Besides, the oral administration of nonsugar compounds (NSC) naturally found in nectars (caffeine and arginine) improved short and long-term olfactory memory retention in conditioned bees under laboratory conditions. To test the effect of offering of SM-scented food supplemented with NSC on honeybees pollinating sunflower for hybrid seed production, in a commercial plantation we fed colonies SM-scented food (control), and SM-scented food supplemented with either caffeine, arginine, or a mixture of both, in field realistic concentrations. Their foraging activity was assessed at the hive and on the crop up to 90 h after treatment, and sunflower yield was estimated prior to harvest. Our field results show that SM + Mix-treated colonies exhibited the highest incoming rates and densities on the crop. Additionally, overall seed mass was significantly higher by 20% on inflorescences close to these colonies than control colonies. Such results suggest that combined NSC potentiate olfactory learning of a mimic floral odor inside the hive, promoting faster colony-level foraging responses and increasing crop production.

scholarly journals Studies on Integrated Nutrient Management of Cowpea (Vigna unguiculata l.): A Review

2021 ◽  
pp. 148-154
Author(s):  
Bimesh Dahal
Keyword(s):  
Crop Production ◽  
Management Practices ◽  
Nutrient Management ◽  
Chemical Properties ◽  
Farming Systems ◽  
Integrated Nutrient Management ◽  
Yield Attributes ◽  
The Status ◽  
Physical Attributes ◽  
Physical And Chemical

There are many management methods for nutrient which can be specifically applied in farming systems. Integrated nutrient management (INM) generally denotes the combined use of organic and chemical fertilizers for producing crops in a sustainable manner and to maintain soil fertility as well as to supply nutrient in appropriate amount which consider social, ecological and economic impacts. This paper shows the importance and need of INM in agriculture production. Also, the relation of INM and yield attributes are analyzed and evaluated including growth and physical attributes of cowpea. The status of nutrient uptake by plant is also described along with other physical and chemical properties of soil. Finally, this paper also describes about the biofertilizer and its relation, impact and effect on crop production which can be used as a improved technology with the combination of other nutrient management practices.

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