Crop Recommendations

Boron applications for Coastal Bermudagrass

Boron applications for Coastal Bermudagrass

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to reproductive organs, and increases pollination and seed development. Coastal bermudagrass requires a supply of available boron, especially during rapid vegetative growth. Some Coastal bermudagrass varieties may respond to applied boron, especially on sandy soils in high rainfall regions, or with adverse weather conditions during the growing season. Where needed, a preplant application of Granubor® 2 with the early-season top-dressed NPK fertilizer generally will ensure an adequate supply of boron.

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Boron applications for improved cotton yields

Boron applications for improved cotton yields

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to fruit, and increases pollination and seed development. Cotton requires an available supply of boron – especially during the boll development stage – or boll shed may occur, which reduces yields. Multiple foliar sprays of Solubor® applied alone or with insecticides will ensure an adequate supply of boron during flowering and boll development. Preplant soil application of Granubor® 2 plus foliar sprays of Solubor® during the season are recommended for soils testing low in available boron.

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Boron applications for improved peanut quality and yields

Boron applications for improved peanut quality and yields

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to fruit, and increases pollination and seed development. Peanuts requires an available supply of boron, especially during the pod development stage, or “hollow heart” may occur, possibly reducing quality and yields. One or more foliar sprays of Solubor® applied alone or with insecticides will help ensure an adequate supply of boron during flowering and pod development. Preplant soil application of Granubor® 2 plus foliar sprays of Solubor® during the season are recommended for soils testing low in available boron.

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Boron applications for increased apple production

Boron applications for increased apple production

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to fruit, and increases pollination and seed development. Apples require an adequate supply of available boron, especially during flower formation and fruit set. Foliar sprays of Solubor® during the dormant season, pre-pink and early bud stages will ensure an adequate supply of boron during the critical stages of flowering and fruit development. Apples are sensitive to over-applications of boron, and boron toxicity can result if the recommended boron application methods and rates are not carefully followed.

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Boron applications for increased grape production

Boron applications for increased grape production

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to fruit, and increases pollination and seed development. Grapes require an adequate supply of available boron, especially during flowering and fruit set. Multiple foliar sprays of Solubor® applied alone or with insecticides will ensure an adequate supply of boron during the critical stages of flowering and berry development. Preplant soil application of Granubor® 2 plus foliar sprays of Solubor® during the season are recommended for soils testing low in available boron.

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Boron applications for increased soybean yields

Boron applications for increased soybean yields

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to reproductive organs, and increases pollination and seed development. Soybeans require an adequate supply of available boron, especially during flowering and seed development. Multiple foliar sprays of Solubor® will ensure an adequate supply of boron during this stage of growth. Foliar sprays of Solubor® can be combined with other field treatments, such as insecticides, to reduce costs. Preplant soil application of Granubor® 2 plus foliar sprays of Solubor® during the season are recommended for soils testing low in available boron.

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Boron applications for increased yields of high-yield field corn and sweet corn

Boron applications for increased yields of high-yield field corn and sweet corn

Boron is essential for all plant growth. It aids in the transfer of sugars and nutrients from leaves to reproductive organs, and increases pollination and seed development. Corn requires a supply of available boron, especially during tasseling and silking. Where needed, a preplant application of Granubor® 2 or a foliar spray of Solubor® prior to these stages of growth generally will ensure an adequate supply of boron. Only certain varieties of field corn under high-yield conditions – and some sweet corn varieties – may respond to applied boron, especially on sandy soils in high rainfall regions, or with adverse weather conditions during the critical stages of tasseling and silking. In order to avoid toxicity, application rates of boron and methods should be followed.

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Boron in forestry production

Boron in forestry production

Boron deficiency is the most common micronutrient limitation in forest plantations. It occurs in many countries, particularly in exotic plantations of eucalypts and pines, but also in plantations and natural stands of native species on soils altered by macronutrient fertilization, liming, fire or erosion.

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Fruit tree foliar nutrient sprays

Fruit tree foliar nutrient sprays

Foliar nutrient sprays are commonly applied to fruit trees. Boron is immobile in most plant tissues so boron may not be readily transported to developing flower buds. Solubor® can be effectively applied with dormant oil-insecticide sprays during the dormant stages of most fruit trees.

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Yields of pistachio increased with boron application

Yields of pistachio increased with boron application

  • Recent research results in California have shown that foliar applications of Solubor® have increased pistaschio yields.
  • The best time for foliar application is from the late dormant to the early bud stages.
  • Soil applications of boron are not as effective as foliar applications in supplying sufficient boron for flowering.
Brown, Ferguson, and Picchioni worked with 1,000 pistachio trees in California over a 4-year period to
investigate the role of boron (B) nutrition and review current B recommendations. Cumulative 3-year yields
of pistachio per tree from foliar and soil-applied B are given in the table shown here. Their results show
greater yields were definitely obtained with foliar application of Solubor®. The best application rate shown in
this research was 5 pounds of Solubor® in 100 gallons of water. The best time to use a foliar application was
from the late dormant to early bud stages of development.

Soil-applied B at 2 to 8 ounces per tree affected yields sometimes. Soil-applied B results were not as
consistent, nor as dependable as a foliar application.

Pistachio yield was only one measurement that Brown, Ferguson and Picchioni made on trees. They
documented several influences of foliar-applied B at the critical late dormant to early bud stages. Boron
increased pollen viability, fruit set, and leaf B concentrations, but decreased blanking percentage. All of these
measurements lend support to applying 5 pounds of Solubor®/100 gallons of water per tree at the right time.

DOWNLOAD PDF FOR TABLE
 

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Soybeans

Soybeans

Boron fertilization of soybeans has been shown to increase grain yield at locations across the world when the boron supplying power of the soil is inadequate even though soybeans are listed as tolerant to boron deficiency. University research has found soybean yield increases ranging from 2-17.91 bushels per acre due to application of boron to boron deficient soybeans.

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Boron for profitable alfalfa

Boron for profitable alfalfa

Alfalfa has a higher boron requirement than most crops. Results of soil tests and/or plant analyses can be used to assess the available boron status for this crop. For optimum yields of high quality alfalfa, it is essential to maintain adequate supplies of available boron throughout the growing season. Boron fertilizers can be topdressed with potassium and/or phosphate fertilizers in the spring, or after the first harvest of established alfalfa, or as foliar sprays.

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Rio Tinto Borates is a global leader in the supply and science of borates - naturally-occurring minerals containing boron and other elements. Refined borates are essential nutrients for crops. We are 1,000 people serving 500 customers with over 1,700 delivery locations globally. We supply 30% of the world's need for refined borates from our world-class mine in Boron, California, about 100 miles east of Los Angeles.  Learn more about Rio Tinto

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