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
Florida Sugar Cane field
Citrus
September 26, 2016
Florida Sugarcane Industry Strengthening From Within
Pot sweetens with promotions for three executive staffers of the state’s Growers Cooperative. Read More
Closeup on a citrus blossom in Florida
Citrus Achievement Award
September 26, 2016
Hope Growing Around Bactericides As A Citrus Greening Solution
Citrus Achievement Award winner Marty McKenna is optimistic about new approach to staving off HLB. Read More
water droplet_generic
Citrus
September 22, 2016
Senate Committee Report Says WOTUS Reforms Needed
A report issued from the Senate Environment and Public Works (EPW) Committee says federal agencies overreach their authority to regulate Read More
Spring Valley Farms in Umatilla, FL, from a drone
Citrus
September 22, 2016
Citrus Tax Incentive A Big Step Closer To Fruition
U.S. House vote ends in landslide of support for emergency legislation, which allows growers to immediately expense the cost of planting new trees. Read More
The new Greefa unit at Stemilt is nearly the length of a football field. “It just keeps going and going,” says General Manager Jay Fulbright. (Photo courtesy of Stemilt)
Citrus
September 20, 2016
Preventative Control Rules Now In Effect For Large Businesses
Facilities employing 500 or more people must meet new standards. Read More
If Palmer amaranth is present in your field, do not remove the weed plants. Instead, destroy the weeds by burying or burning near the infested field.
Photo credit: Dwight Lingenfelter, Penn State University
Citrus
September 20, 2016
EPA Says Glyphosate Not Likely To Cause Cancer
Paper says herbicide not carcinogenic at doses relevant for human health risk assessment. Read More
illustration showing data taken and recorded on new citrus varieties
Varieties & Rootstocks
September 20, 2016
Is Citrus Ready To Break Out Of The Bubble?
Opportunity for enhanced data collection process at variety display days could give breeding and research teams a leg up in vetting sensible selections. Read More
The Latest
Citrus
September 29, 2016
Winter Is Coming, And It Could Get Wicke…
Forecast sees heightened freeze threat for Florida citrus; frequent snow to blast Northeast. Read More
Citrus
September 29, 2016
Celebrate National Farmer’s Day Ev…
Florida agriculture has a compelling story to tell every day, but what better time to tell it than National Farmer’s Day? Read More
Citrus
September 26, 2016
Presidential Candidates Comment On Agric…
Hillary Clinton and Donald Trump weigh in on a number of topics of concern to growers. Read More
Citrus
September 26, 2016
Florida Sugarcane Industry Strengthening…
Pot sweetens with promotions for three executive staffers of the state’s Growers Cooperative. Read More
Citrus
September 22, 2016
Senate Committee Report Says WOTUS Refor…
A report issued from the Senate Environment and Public Works (EPW) Committee says federal agencies overreach their authority to regulate Read More
Citrus
September 22, 2016
Citrus Tax Incentive A Big Step Closer T…
U.S. House vote ends in landslide of support for emergency legislation, which allows growers to immediately expense the cost of planting new trees. Read More
Citrus
September 20, 2016
Preventative Control Rules Now In Effect…
Facilities employing 500 or more people must meet new standards. Read More
Citrus
September 20, 2016
EPA Says Glyphosate Not Likely To Cause …
Paper says herbicide not carcinogenic at doses relevant for human health risk assessment. Read More
Business Planning
September 19, 2016
American Agricultural Exports Could Feel…
Despite headwinds, the U.S. remains the most stable economy in the world. Read More
Citrus
September 17, 2016
August Was The Hottest In 136 Years
The extended heat wave continues a streak of 11 consecutive months of record-setting temperatures. Read More
Citrus
September 15, 2016
What The Bayer-Monsanto Merger Means Thu…
The deal, subject to regulatory approval, would create the world’s largest agriculture company. Read More
Citrus
September 15, 2016
Support Strong For Emergency Citrus Legi…
Proposed bill that would increase fruit production figures through tax code tweaks passes first test in U.S. House Ways and Means Committee approval. Read More
Citrus
September 14, 2016
Bayer Acquires Monsanto After Months Of …
Mega-Merger sealed with $66 billion all-cash transaction. Read More
Citrus
September 13, 2016
Can CRISPR Carry Agriculture Innovation …
Game-changing technology allows targeted gene modification to fight diseases like citrus greening. Read More
Citrus
September 12, 2016
Historic Farmworker Overtime Law Approve…
California legislation, the first of its kind in the nation, is reviled by grower groups who say it will actually do economic harm to farmworkers. Read More
Citrus
September 12, 2016
FDA Allocates $21.8M To Help States Comp…
Funding has been awarded to assist 42 states with implementing the Food Safety Modernization Act. Read More
Citrus
September 9, 2016
Are You Feeling Befuddled By Fickle Fore…
In any situation, proactivity pays. We can wait for the sky to fall, or we can sing in the rain. Read More
Citrus
September 8, 2016
Bayer Ups Monsanto Offer
German company increases offer by 2% for world’s largest seeds company. Read More
[gravityform id="62" title="false" description="false"]