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Below you'll see everything we could locate for your search of “fertilizer rate”
High yields of HLB-free fruit can hypothetically be sustainably produced in citrus under protective screen (CUPS), Arnold Schumann said at a Dec. 14 field day at the Citrus Research and Education Center (CREC). He backed that up with data showing high yields from Ray Ruby grapefruit planted at high densities and fertigated in CUPS. Trees in his CUPS facility are …
By Mongi Zekri For maximum efficiency of a grove, it is essential that every location is occupied by a tree and that every tree is healthy. Prompt replacement of dead and declining trees means higher average long-term returns from the grove. If the declining trees remain in the grove, they keep getting weaker and yield less fruit each year. Therefore, …
Norwegian company Desert Control has developed a liquid natural clay (LNC) that reportedly restores and enhances soil ecosystems to reduce usage and improve efficiency of water, fertilizers and natural resources for agriculture and other uses. It has signed contracts with the Limoneira Company to apply LNC to citrus trees in California and Arizona. The project’s initial scope is to apply …
By Tripti Vashisth In Florida, it is the time of year to start following citrus flower bud induction conditions for next year’s bloom. Citrus flower bud induction starts in the fall and usually is complete by early January. Low temperatures first stop growth and then promote induction of flower buds as more hours of low temperatures accumulate (below 68 degrees). …
By Mongi Zekri Pruning is an important grove practice that increases sunlight penetration within the tree canopy. Sunlight enhances flowering, fruit quality and color development. Sunlight also allows foliage to dry quickly after a rain shower, which reduces problems of fungal diseases. Pruning trees can improve fruit quality and increase fruit size. However, tree response to pruning depends on scion …
The Fruit Crop Physiology Lab at the North Florida Research and Education Center (NFREC) in Quincy is focused on developing a sustainable and profitable cold-hardy citrus industry in the southern United States. To do that, it is conducting research-driven Extension projects. The NFREC is part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The lab collaborates …
By Chris Oswalt Growers may have compelling reasons to collect and analyze citrus leaf samples at different times of the year. Current tables allow growers to interpret the results of their citrus leaf analysis based on the collection and analysis of 4- to 6-month-old leaves from non-fruiting twigs (Figure 1). This begs the question of the potential consequences of interpreting …
Dundee Citrus Growers Association (CGA) and its members will more than double the area growing fresh citrus under protective screen (CUPS) with the addition of a second CUPS project. The new project will be located in southern Polk County, just east of Fort Meade. “Once fully developed, the 622-acre parcel will contain approximately 500 acres of CUPS … bringing our …
By Yiannis Ampatzidis and Sandra M. Guzmán Pests and diseases, nutrient deficiencies, tree stress from environmental conditions and other factors can be overwhelming. The arrival of sensors and small unmanned aerial vehicles (UAVs) make it possible to gather large amounts of data to assess risk factors and estimate possible crop performance scenarios based on the availability of resources. At the …
Whether a citrus grove is thriving or not is often based on what is observed above the ground. However, the best measurement of fertility comes from what’s happening below ground—in the soil microbiology. There is a complex community of living organisms, everything from worms and insects to tree roots. One of the most important elements is soil microbes. Soil microbes …
By Ute Albrecht There have been numerous reports of malformed roots in field-grown citrus trees recently. The rootstock propagation method is often suspected as the culprit. Before drawing quick conclusions, it is important to recognize that there are many different factors that can influence the root structure of a citrus tree aside from the propagation method. These include the genetic …
By Davie Kadyampakeni Nutrients are needed for optimal citrus tree growth, fruit yields and juice quality. Any nutrient deficiencies could result in low yields and decreased revenue. Make sure citrus trees receive adequate macronutrients and micronutrients at all times. Macronutrients are those nutrients needed in large quantities to influence yield, growth and fruit quality. Macronutrients are further divided into two …
By Jude Grosser, Manjul Dutt and Fred Gmitter Exploiting citrus genetic diversity is the key to defeating HLB. Plant species have survived for millennia with evolving, hostile pathogens. This is possible through natural selection within genetically diverse populations. Tolerant or resistant individuals survive and intermate, get through the bottleneck, and the species evolves. Current citriculture is based on extremely limited …
Turkey is forecast to produce 249,000 metric tons (MT) of grapefruit in 2021–22, up 5% over the prior year, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) reported. The increased production is due to better yields resulting from favorable weather conditions in the Mediterranean growing region, USDA/FAS stated in its semi-annual report on Turkish citrus. Improved yields have allowed …
Brazil’s 2022–23 orange harvest is expected to yield a crop of 414.4 million 40.8-kg boxes (MBx), an increase of 15% over the prior season’s production. That forecast was issued by the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) in its semi-annual report on Brazilian citrus. Most of Brazil’s 2022–23 orange harvest will come from the state of São Paulo …
Florida citrus growers are facing a rising mound of challenges these days. With citrus greening disease (HLB) devastating groves, low supply, soaring fertilizer prices and a substantial increase in overall production costs, the current odds are stacked high against citrus growers. This is an industry in crisis. Fortunately, science is catching up with new solutions to combat these urgent issues. …
By Brenda Eubanks Burnette I was reading a book about Dundee Citrus Growers Association, “D Is for Diamonds,” by Gordon Smith when I came across a story about Hoyle Pounds. He was inducted into the Florida Agricultural Hall of Fame in 1980 and the Florida Citrus Hall of Fame in 1986. Pounds had a long career as an innovator. He …
By Jamie D. Burrow and Tripti Vashisth With the increased cost and limited availability of fertilizer, purchasing decisions are more important now than ever. Collecting the right leaves for sampling is the first step to making fertilizer decisions. Leaf samples should consist of 100 leaves that are 4- to 6-month-old spring flush leaves taken from nonfruiting branches. WHY LEAVES FROM …
By Sarah Strauss, Antonio Castellano-Hinojosa, Davie Kadyampakeni, Ramdas Kanissery and Tara Wade Cover crops, which are planted specifically for soil enhancement and not for sale or harvest, can improve soil conditions and production for a variety of crops. However, there have not been many studies documenting changes to soil conditions and production when using cover crops in citrus. The University …
By Brad Turner Cover cropping and composting in Florida citrus production are not new concepts. Our ancestors understood the basic principles and implemented these practices just a couple of generations ago. YESTERDAY AND TODAYAs a boy, I can remember an old citrus grower telling me how beggarweed and crotalaria, both native nitrogen-fixing legumes, growing wild in neighboring fields would be …
