Feeding Frenzy

Feeding Frenzy

Foliar feeding is not intended to completely replace soil-applied fertilization of the macronutrients (nitrogen, potassium, and phosphorous). However, macronutrients can be foliarly applied in sufficient quantities to influence both fruit yield and quality. Some crops, such as citrus, can have a large part of the nitrogen, potassium, and phosphorous requirements met through foliar applications.

Foliar applications of other plant nutrients (calcium, magnesium, and sulfur) and micronutrients (zinc, manganese, copper, boron, and molybdenum) have proven for many crops to be an excellent means for supplying the plants’ requirements.

Feeding Supplement

Foliar feeding should be used as an integral part of the annual nutritional program. It can be used in other situations to help plants through short, but critical periods of nutrient demand, such as fruit set and bud differentiation. Foliar nutrition may also prove to be useful at times of soil- or environmentally induced nutritional shortages. Foliar application of nutrients is of significant importance when the root system is unable to keep up with crop demand or when the soil has a history of problems that inhibit normal growth.

Foliar feeding is proven to be useful under prolonged spells of wet soil conditions, dry soil conditions, calcareous soil, cold weather, or any other condition that decreases the tree’s ability to take up nutrients when there is a demand. Foliar feeding may be utilized effectively when a nutritional deficiency is diagnosed. A foliar application is the quickest method of getting the most nutrients into plants. However, if the deficiency can be seen, the crop might have already lost some potential yield.

Foliar fertilization is also efficient since it increases the accuracy of fertilizer application. Applications made to the soil can be subject to leaching and volatilization losses and/or being tied up by soil particles in unavailable forms to citrus trees.

Be Careful Of Burns

While foliar feeding has many advantages, it can burn plants at certain rates under certain environmental conditions. It is important, therefore, to foliar feed within the established guidelines. There are a number of conditions that can increase the chances of causing foliar burn. A plant under stress is more susceptible to damage. Stressful conditions include drying winds, disease infestations, and poor soil conditions. The environmental conditions at the time of application are also important factors. Applications when the weather is warm (above 80ºF) should be avoided. This means that during warm seasons, applications should be made in the morning or evening. Additionally, applications should not be at less than two-week intervals to give the plant sufficient time to metabolize the nutrients and deal with the added osmotic stress.

Another important factor when applying a nutrient foliarly is to ensure that the pH of the material is in the proper range. The pH range of the spray solution should be between 6 and 7. Attention should be paid to the pH of the final spray solution. This is significant in areas where water quality is poor.

Leave a Reply

Citrus Stories
Citrus2 Dozen Florida Nurseries Vying For Coveted Cannabis Growing Licenses
July 27, 2015
With only five spots available to produce the low-THC ‘Charlotte’s Web’ strain, tedious review process is in full swing. Read More
Insect & Disease UpdateSecond Case In A Month Of Citrus Greening In California
July 24, 2015
More trees testing positive for disease within close proximity of original find. Read More
CitrusUSDA Expands Crop Insurance Options For Fruit And Nut Growers
July 24, 2015
The USDA announced the expansion of crop insurance to provide additional options for fruit and nut producers. The Supplemental Coverage Read More
FFVA 2015 Annual Convention logo
CitrusFlorida Fruit & Vegetable Association Annual Convention Stacking Up To Be One For The Ages
July 23, 2015
Association's 72nd gathering to feature high-profile speakers, up-to-the-minute Issues Forums, and some fun to mix in with the business of the day. Read More
CitrusMarketing Order Amendments Referendum Set For Fresh Florida Citrus
July 22, 2015
Changes include the authorization and regulation of new varieties. Read More
Shannon Shepp
CitrusInterim Executive Director Named For Florida Department Of Citrus
July 22, 2015
Shannon Shepp will take on leadership duties immediately after unanimous Citrus Commission vote. Read More
CitrusInternational Report Confirms 2014 As Earth’s Warmest Year On Record
July 21, 2015
Scientific compilation notes climate markers continue to show global warming trend. Read More
The Latest
CitrusGroup Food Safety Audits May Help Prepare You For The P…
July 29, 2015
Group food safety audits, slated to be available next spring, may save small- to mid-size growers time and money. Read More
CitrusNew Director Named For Florida’s Citrus Research And Ed…
July 28, 2015
Michael Rogers takes a positive charge at finding solutions to greening. Read More
Washington Capitol building
CitrusHouse Passes Bill To Block State GMO Food Labeling Mand…
July 27, 2015
The legislation would offer a federal standard for voluntary labeling of foods containing GMOs.   Read More
Citrus2 Dozen Florida Nurseries Vying For Coveted Cannabis Gr…
July 27, 2015
With only five spots available to produce the low-THC ‘Charlotte’s Web’ strain, tedious review process is in full swing. Read More
CitrusUSDA Expands Crop Insurance Options For Fruit And Nut G…
July 24, 2015
The USDA announced the expansion of crop insurance to provide additional options for fruit and nut producers. The Supplemental Coverage Read More
FFVA 2015 Annual Convention logo
CitrusFlorida Fruit & Vegetable Association Annual Conven…
July 23, 2015
Association's 72nd gathering to feature high-profile speakers, up-to-the-minute Issues Forums, and some fun to mix in with the business of the day. Read More
CitrusMarketing Order Amendments Referendum Set For Fresh Flo…
July 22, 2015
Changes include the authorization and regulation of new varieties. Read More
Shannon Shepp
CitrusInterim Executive Director Named For Florida Department…
July 22, 2015
Shannon Shepp will take on leadership duties immediately after unanimous Citrus Commission vote. Read More
CitrusInternational Report Confirms 2014 As Earth’s Warmest Y…
July 21, 2015
Scientific compilation notes climate markers continue to show global warming trend. Read More
non-gmo label leafy greens
CitrusGMO Labeling Battle Moves To House Floor
July 21, 2015
The Safe and Accurate Food Labeling Act of 2015 was passed by the Agriculture Committee last week and will head Read More
Doug Ackerman
CitrusFlorida Department Of Citrus Executive Director Resigns
July 21, 2015
Doug Ackerman steps down after traffic incident. Read More
CitrusWOTUS Wranglings Leaving Agriculture High And Dry [Opin…
July 17, 2015
In late May, the EPA announced the highly anticipated final rule re-defining the waters of the United States (WOTUS) under Read More
man expressing opinion through bullhorn
CitrusStay Opinionated, My Farmer Friends
July 15, 2015
How far are you willing to go to defend your beliefs? Read More
CitrusSouth Florida Water Managers Keeping Close Eye On Dry C…
July 15, 2015
Traditional wet season has been anything but so far as certain parts of the region now experiencing “extreme drought.” Read More
Washington Capitol building
CitrusUnited Fresh Washington Conference Connects You With Ke…
July 14, 2015
United Fresh has announced the Washington Conference, which will be held Sept. 28-30 in Washington D.C. The conference offers an Read More
CitrusEl Niño Could Be Strongest In 50 Years
July 14, 2015
In the latest AccuWeather report, Brett Anderson, senior meteorologist with AccuWeather says El Niño has strengthened over the past few Read More
CitrusReport: Climate Change Threat To Bumblebee Populations
July 13, 2015
According to a news release from the University of Vermont, in the most comprehensive study ever conducted of the impacts Read More
CitrusFlorida Agriculture Financial Management Conference Sch…
July 12, 2015
Educational program of prominent speakers to provide the lowdown on ag business trends. Read More