… BMR sorghum The first stage occurs approximately 30 days after emergence, when sorghum enters a rapid growth period and the potential number of grain kernels start to form. • N, P, Zn, (and K) have reliable soil tests to measure nutrient availability and predict fertilizer needs. Balanced fertility programs improve water use efficiency (drought tolerance) and grain yield, at the lowest possible cost. Estimated nutrient requirements for grain sorghum based on stage of growth are presented in Table 4. Nutrient use efficiency deteriorates outside this pH range and liming to raise pH to 6.0 or above is effective. Use of pop-up fertilizer placed in direct contact with the sorghum seed is more risky, but can be done successfully by precisely metering a lower rate. If the phosphorus level in the field is low, starter fertilizer is an excellent way to get the phosphorus … Sulfur can be lacking on sandy soils low in organic matter. Nitrogen In most farming environments,the most limiting nutrient to yield is nitrogen. Example: Yield goal pounds per acre = 6200 lb/ac, carryover nitrogen is 40 lb/ac from soil test. For example, if nine gallons per acre of 7-21-7 fertilizer, weighing 11.0 pounds per gallon is used, then 99 pounds of material is applied per acre. When pH drops below 5.6, liming is warranted to reduce soil acidity,which then allows plants to utilize soil nutrients. Thus, a good starter fertilizer might range from a ratio of 1-4-0, 1-3-1, 1-3-3, to 1-1-1, depending on the rate of fertilizer required. On a per bushel basis, grain sorghum requires a similar amount of most nutrients as corn. (702) Canola Winter Type3. Going into the growing season, growers often find it difficult to set a yield goal and, in turn,struggle with calculating the proper amount of nitrogen needed. Soybean crop yields will decrease when it lacks essential nutrients. A general rule to thumb for nutrient removal of NPKS is 24:8:32:5 He has been with Pioneer Hi-Bred since 1990. Soil tests for some of these nutrients are difficult to interpret. Sorghum response to phosphorus is most likely on soils testing medium or lower. The nutrient recommendation for a soil testing in the optimum range for P and K is 120 pounds of N, 65 pounds of P 2 O 5, and 120 pounds of K 2 O for a crop with a 21-ton per acre yield potential. Extension Soil Specialist. See the following table for N and P recommendations for grain sorghum … Figure 1: Phosphorus deficiency shown by purpling is often aggravated by other conditions, such as cool wet soils and slow root growth. nitrogen/acre from previous manure application.Actual rate = 110 x 1.2 - 40 -15 = 77 pounds actual nitrogen needed. Adequate nitrogen must be present to support this rapid growth period. Optimum Fertility Improves Water Use Efficiency. • Plant part: Leaves are higher then stems, upper leaves are higher than lower leaves • Tillers: Higher than main plants • Maturity: Higher yields result in lower HCN • Fertilizer: Do not over apply N and amend P and K deficiencies • Frost: Frost concentrates HCN, delay harvest or grazing few days for HCN to … Applications should be timed such that nitrogen is in place and available for this rapid growth phase, as yield potential is being established at this time. Fertilizer Recommendation Guide. The Sorghum Checkoff is not responsible for the quality, accuracy or nature of the third-party link. Table 1. If a grower wants to produce a 100-bushel sorghum crop, the grower must support this yield goal with a supply of adequate nutrients, including phosphorus, nitrogen, sulfur and potassium. MANURE—It is important to consider nutrient credits from manure applied previously or to the current crop and adjust fertilizer rates accordingly. 2. Nitrate (NO3) is a naturally occurring form of nitrogen found in most soils. The cost of planting grain sorghum is much less expensive than other crops, primarily because of seed price. Fertilizer Recommendations by Crops, Categorized (Crop codes in parentheses) I Field Crops 1. Some states now suggest taking a soil sample to a shallower depth for no-till. Growers must base the amount of nitrogen applied on factors including yield goal, the amount of residual nitrogen in the soil profile and the expected nitrogen amount mineralized from soil organic matter. Early growth response does not always increase grain yield but may result in earlier maturity of the crop. Research at the University of Nebraska and other Midwestern universities has shown that significant yield increases … Check out the sorghum soil management page for current University of Nebraska-Lincoln Extension recommendations for nitrogen, phosphorus, potassium, zinc, iron, and sulfur. The phosphorus content of the fertilizer is not considered when the salt index is calculated. Jason Clark . The yield goal needs to be realistic, taking into account moisture, soil type and cropping sequence. (701) Canola Spring Type2. Since growers do not want to overapply nitrogen, they can manage nitrogen with a multiple-application plan. Phosphate combines with the toxic aluminum, effectively reducing aluminum concentrations in the soil. 3. Figure 2: High pH induced iron deficiency chlorosis. One of the things common to all three growers is having adequate nutrients. For the low P and low K category, the new recommendation is 210-140-170. A 5 to 7 ton forage sorghum crop will remove about 40 lb/acre P 2 O 5 and 180 lb/acre K 2 O. Row applied starter fertilizer can maximize uptake efficiency for nutrients such as phosphate, zinc and sulfur in low testing soils. Ron Gelderman . Table 1 shows the typical nutrient removal for a 100-bushel per acre sorghum crop. Fertilizer nutrient needs for grain sorghum are based on expected yield, nutrient levels in the soil and fertilizer-nitrogen costs. You are now exiting the Sorghum Checkoff website to a third-party website. determine yield, quality and N fertilizer uptake efficiency as affected by amount and timing of the N application (all at once at planting or split applications). After each cut, 50 kg/ha (45 lb/ac) more nitrogen should be applied to encourage growth. Nitrogen is the nutrient most often limiting in sorghum production. nitrogen/acre from previous manure application.Actual rate = 6200 x .021 - 40 -15 = 75 pounds actual nitrogen needed. (C02) Corn (for Grain) Irrigated 250 bu/a31. As shown in the graph below, yield becomes less responsive to nitrogen as yield approaches 150 bushels per acre becauseyield becomes limited by other factors. Proper fertilization for adequate levels of all nutrients is the best way to maximize standability. The actual nitrogen rate is based on the expected yield goal for the specific field, multiplied by a factor of 1.2 units per bushel (or 2.1units per hundred weight or .021 units per pound) minus any nitrogen credits. Of these nutrients, the key elements include nitrogen, phosphorous, potassium, zinc, and sulfur. The fertilizer used as a starter should contain a small amount of nitrogen; most, if not all, of the recommended phosphorus; and possibly some potassium. Click cancel to return to SorghumCheckoff.com. Follow soil test recommendations to determine nutrient needs and fertilizer recommendations. The fertilizer needs of the crop are often neglected while attention is mostly directed at fertilizing other crops in the rotation. Soils testing in a medium or higher range for potassium (K) generally do not show a yield response to added potassium fertilizer. Additional Resources. A soil pH range of 6.0 to 7.5 is ideal for sorghum production, with pH of 6.5 considered optimum. Use of starter and sidedress applications should be considered when the potential for nitrate leaching is high. Soil tests should be taken to determine what kind and amounts of fertilizer should be used. In some soils, growers also may need to adjust pH to ensure the availability of soil nutrients to the sorghum. EC 750 Original Authors: 2005 – Jim Gerwing . The University of Nebraska–Lincoln recommendation for the economically optimal N rate (EONR) for grain sorghum is estimated using the equation: EONR (lb/acre) = [70 + (1.1 x EY) – (20 x OM) – (14 x NO. Rely on experience and local recommendations to determine the need to supplement these nutrients where a grain sorghum crop is planned. University research on boron, copper and manganese does not show a consistent response for most soils. The appropriate use of nitrogen and phosphorous fertilizer for sorghum production could make an important contribution to optimize profit through increasing production and productivity of sorghum in areas, where there is low practice of using improved technologies such as optimum level of fertilizer [10]. Starter fertilizer applications for sorghum is a sound practice in the Texas High Plains. Equations for determining N, P and K nutrient recommendations for sorghum can be found in (Table 1). Sorghum seed is sensitive to fertilizer burn-do not allow fertilizer to come in contact with seed. Zinc is most likely deficient in areas where topsoil has been removed and under high yield conditions. Economic information is collected on each CGSRVP Other credits include 15 lb. of yield goal In productive irrigated situations, up to 200 pounds of nitrogen will be required. Soil tests are a good tool for predicting zinc needs. Zinc Soil test zinc above 1.0 ppm does not require any fertilizer zinc additions to … Where nitrogen comes from does not … Kansas State University research suggests that on acid soils, banding 35 pounds per acre P2O5 at planting can increase yield to the same level as liming at a rate of 5000-10,000 pounds. Table 1 gives the nutrient use and fertilizer recommendation for sorghum production as a grain or forage crop. Grain sorghum requires approximately 1.2 pounds of nitrogen for every bushel produced. ECC (effective calcium carbonate) at a significantly lower cost. Improving the Profitability, Sustainability and Efficiency of Nutrients Through Site Specific Fertilizer Recommendations in West Africa Agro-Ecosystems pp 241-252 | Cite as Improving Agronomic Efficiency of Mineral Fertilizers through Microdose on Sorghum in the Sub-arid Zone of Burkina Faso Tag: Grain Sorghum Fertilizer Requirements. Adjusting high pH downward is usually impractical. Sidedress nitrogen should be applied by the time sorghum reaches the five-leaf stage. Recommendations for fertilizing corn should be used for the sorghum family, including the 100-125 kg/ha (90-110 lb/ac) nitrogen applied at planting. Lubbock, TX 79403 A multiple-applicationplan is particularly important on sandy soils where preplant nitrogen can leach out of the sorghum root zone following heavy rains. (001) Corn (for Grain) Dryland4. This critical component enables the soil to provide nutrients to plants. All Rights Reserved. Materials and Methods Field experiments were conducted on a Hoosic soil (pH 6.4, medium soil tests for P and K) at the Valatie Research Farm in Columbia County, NY. The likelihood for deficiency will be greater on sandy soils when compared to fine textured soils. Sorghum is no exception, requiring 1.12 pounds per bushel of grain produced, which is very similar to the recommendation for corn. Low and very low phosphorus levels, as indicated from soil tests, will likely show a response to applied phosphorus (45 to 60 pounds broadcast or 20 to35 pounds in a band) unless yield potential is restricted by insufficient moisture. Extension management recommendations to produce a high yielding, economical grain sorghum crop. Prior to his current role, he was a Field Sales Agronomist involved in sorghum production with growers in Nebraska. The effect of starter fertilizer is most often observed on grain sorghum in areas where nights are cooler. Earlier maturity may also result in slightly drier grain at harvest (one or two percentage points lower grain moisture). Sustainable sorghum farming strategies – growing tips and fertiliser recommendations to improve sorghum crop quality and yield. For production on sandy soils with low organic matter, it is suggested to try a 10 to 15 pounds per acre sulfur application to ascertain the likelihood of a sulfur response. Approximate quantity of nutrients in a 100 bushels per acre sorghum crop, Source: Adopted from National Plant Food Institute. Soil pH This critical component determines if nutrients in the soil can be taken up by the plant. Under low rainfall conditions with low yield potential, 30 to 60 pounds of nitrogen per acre may be adequate. Manure applications, if available, are a good source for many nutrients, including zinc. Kansas State cautions that the use of phosphate for aluminum toxicity reduction is a temporary solution, since it does not change the pH of the soil. The estimated salt index would be 14 pounds per acre. Both phosphorus and potassium are immobile nutrients in the soil and are generally safe from leaching. Growers should consider applying no more than 50 percent of the anticipated needed nitrogen as a preplant application and then adjusting the remainder of the nitrogen applied to meet the anticipated yield potential as the season progresses. N/bu. -N), soil organic matter, and grain price relative to the price of fertilizer nitrogen. The most dramatic visual response to starter fertilizer occurs when soils are cool at planting time. Phosphorus Phosphorus is especially limited when pH drops below 6 or is above 8. (C01) Corn (for Grain) Irrigated 200 bu/a30.  | Tags: agronomy library, sorghum management, sorghum, grain sorghum, fertilizing, By Brent Bean, Ph.D., Sorghum Checkoff Agronomist. A soil pH range of 6.0 to 7.5 is ideal for sorghum production, with pH of 6.5 considered optimum. The salt index of a fertilizer can be determined by adding the rate of nitrogen (N), the rate of potassium (K20), and one half the rate of sulfur (S) applied. The rate of starter fertilizer depends on the salt content, or index, of the fertilizer, the distance between the fertilizer and the seed, and the soil texture. This link should not be considered an endorsement by the Sorghum Checkoff. This critical component determines if nutrients in the soil can be taken up by the plant. Nitrogen is particularly needed on most soils and exerts the greatest effect on yields. Bill McClure holds a Bachelor of Science degree in agronomy from the University of Nebraska. Nitrogen can be applied at varying times with good results. Optimum nutrient availability occurs within a pH range of 6.5 to 7.5. Fertilizer requirements for sweet sorghum depend on the fertility levels of the field in which it is grown. He currently serves as a Technical Product Manager and is involved in sorghum production with growers in Kansas, Oklahoma, and Texas. Even if soil tests like phosphorus (P) are in the “medium” range, one of the purposes of “starter” fertilizer for nitrogen (N) and P is to “kick-start” or stimulate growth right after emergence. Sorghum-sudan grasses can grow in a wide pH range with 5.5-7.5 as the optimum. Fertilizer is an important production input for optimum yields. Salt index limits are listed in Table 3. Phone: (806) 687-8727 Soil pH. These salt limits are designed to provide safe conditions for all environments, with rare exceptions. Soil Testing Program Manager. Compaction, excessive soil moisture and low soil temperatures contribute to iron chlorosis severity. Multiply ppm ammonium nitrogen (from your lab report) by 2.7 to get pounds of ammonia N in an acre foot of pond water. A forage sorghum silage crop removes large amounts of nutrients, so soil testing is essential with this crop. Soil testing is the basis for determining which of these nutrients will likely limit production. ™ ® Trademarks of Corteva Agriscience and its affiliated companies. The benefits of rapid early growth include more uniform stand establishment and plant size. Zinc recommendations for corn and sorghum production _____11 Lime recommendations based on SMP or Sikora buffer pH methods, given in pounds/acre of finely ground pure calcium carbonate (CaCO 3) to increase soil pH from its present Table 2. Soybean is an important crop in Minnesota and provides a significant return for many farms. Posted on Mar 11, 2019 The best example of this involves the use of fertilizer. Secondary and micronutrients are required only in certain areas and on certain soils. For a grain yield of 7,500 pounds per acre, sorghum needs approximately 25 inches of water during the growing season. Once sorghum is established, two critical growth stages occur when lack of nitrogen can significantly impact yield. Failing that, research at Kansas State University shows that sorghum requires 1.6 pounds of nitrogen per bushel of expected yield, assuming 2.0% organic matter. Adequate potassium levels are necessary for strong stalks, but high potassium rates alone will not provide total protection from stalk lodging. Follow soil test recommendations to determine nutrient requirements. For information about horticultural recommendations please email Ward Upham. Properly fertilized sorghum used an average of one inch more water than unfertilized sorghum but produced 12.5 hundred weight (22 bushels) more grain per acre. 3. placement separate from seed, but a maximum of 10 pounds N/acre may be placed with the seed. Fertilizer or manure ammonia is converted to nitrate only after it is applied to the field. Nitrate is a colorless, odorless, and tasteless compound and it is also one of the most Recommendations for nitrogen, phosphate, and potash are summarized in the tables that follow. If your lab reported in percent, multiply percent N by 10,000 to get ppm. In general, the application of excessive amounts of N, K20 and S too close to the seed will delay grain sorghum emergence and reduce stand. Ideally, producers should base fertilizer recommendations on soil test data. The concentration of aluminum in the soil increases as soil pH decreases, eventually becoming toxic to crop growth. The soil will become more acidic each year and liming will eventually be necessary. Toll Free: (877) 643-USCP. Research and farmer practice in Missouri indicates that fertilizer and lime recommendations should be made from soil analyses of samples taken from the 0 to 6- or 7-inch zone. However, growers may need to add potassium in very shallow soils with reducedrooting depths and on sandy soils. Earlier flowering can improve yield in years of early frost. Under irrigated conditions, irrigation water can supply much of a crop's sulfur needs if irrigation water contains sulfates. Sulfur incorporated in a starter mix is a good method of application. Growers should strive to keep the nitrogen to sulfur ratio at approximately 15-to-1. In all situations, a nitrogen credit should be given for residual nitrogen in the soil (from soil test), nitrogen content in irrigation water, and nitrogen contribution from a previous legume crop or applied manure. The nitrogen fertilizer recommendation in South Texas is 2 pounds of nitrogen for each 100 pounds per acre of grain yield. By concentrating the phosphorus,the nutrient has less opportunity to become “tied up”by the soil. Fertilizer recommendation (Yield goal – soil test value) 1. A complex plant disorder associated with high pH soils and soils containing soluble salts that reduce the availability of iron. When pH falls outside the optimum range, agronomists often recommend applying phosphorus in or close to the seed furrow or in a narrow band a few inches to the side and a couple of inches deep into the soil. • Fe and zinc are the micronutrient most likely to be deficient in Kansas for sorghum. It is best to have fertilizer . (C03) Corn (for Grain) Irrigated 300 bu/a Phosphorus and K fertilizer rates of 0, 0.5, 1.0, and 2.0 times the recommended rates (recommended rates were 79 kg/ha P2O5 and 101 kg/ha K2O) for the lowest soil test values were applied broadcast and incorporated before planting. Assistant Professor & SDSU Extension Soil Fertility Specialist. This method may be applicable on leased land situations or for fields where crop production future may be limited. Sign-up for our newsletter. Millet is important in some farm enterprises in Minnesota. Potassium In most U.S. soils,potassium is available in adequate supply for the needs of sorghum. Fertilizing Grass Pastures and Hayland , NebGuide G1977 Fertilizing Proso Millet , … Fertilizer has a significant influence on water use, as illustrated in Table 2. At 100 pounds per acre, a total of seven pounds of nitrogen (.07 x 100) and seven pounds of potassium (0.7 x 100) would be applied per acre. Nutrient use efficiency deteriorates outside this pH range and liming to raise pH to 6.0 or above is effective. Sorghum planted under cool soil conditions can show a significant early growth response when starter fertilizer is properly applied. recommendation for an expected yield of 210 bu/A, multiply the 150 bu/A recommendation in the table by 1.4 (210÷150=1.4). Soil test results will allow you to develop and fine-tune a sound fertility management plan. Potassium is sometimes promoted as a stalk strength or standability-enhancing nutrient. 1.2 lbs. The second stage is at or just prior to the boot stage, which occurs approximately one week prior to heading, when nitrogen supports good pollination, grain set and grain fill. Liming. As a result, many growers assume they can save on other input costs as well. Fertilizer Recommendations Instructions (PDF) Fertilizer Recommendation Program (XLS) Soil Test Interpretations and Fertilizer Recommendations (PDF) Horticultural Crops. In addition, common phosphorus fertilizer sources contain nitrogen and sometimes sulfur, which tend to lower the pH within the narrow band to allow greaterphosphorusavailability.Growers should base the amount of phosphorus fertilizer applied on soil test estimates and yield goal. © 2021 Corteva. 4201 N. Interstate 27 Mr. Reddy-May 6, 2017 Information from the CGSRVP fields is used to improve and refine recommendations to meet the needs of Arkansas grain sorghum farmers and identify areas which need additional research. At boot stage, 65 to 70 percent of the total nitrogen has been taken up. Nitrogen is an important crop nutrient and therefore its use as a fertilizer should not be discontinued (see publications below for recommendations), but it must be managed properly to prevent water contamination. Example: Yield goal bushel per acre = 110 bu/acre, carryover nitrogen is 40 lb/acre from soil test. Sorghum Production Information Guide. Soybean fertilizer recommendations Previous Next. sorghum. Want to stay up-to-date on all things sorghum? Soil pH. ©2016 United Sorghum Checkoff Program. SDSU Extension fertilizer recommendations are based on field research in South Dakota and neighboring states . Do not place urea or ammonium thiosulfate in direct contact with the seed. (002) Corn (for Grain) Irrigated 150 bu/a29. Zinc is usually applied along with phosphorous and potassium. See NebGuide G361, Using Starter Fertilizers for Corn, Grain Sorghum and Soybeans. Sorghum utilizes nitrogen rapidly after the plants reach the five-leaf stage. Although many producers view grain sorghum as a low maintenance crop, with its deep fibrous root system, sorghum responds well to nutrient applications, especially in lower testing soils. Planning a soil fertility strategy for grain sorghum has many of the same requirements as corn. Adjusting high pH downward is usually impractical. Optimum nutrient … Zinc is a nutrient that is often overlooked, but is a crucial element for optimum sorghum production. Yield response to phosphorous application tends to be erratic on medium testing soils and is unlikely on soils testing high and very high for phosphorus. Sulfur An often neglected nutrient in grain sorghum is sulfur, which improves nitrogen use efficiency and is especially important as yield increases. Other credits include 15 lb. Fertilizer management for high yielding grain sorghum Nitrogen is the main building block of plants and is used to make amino acids, proteins and then biomass. A water analysis is helpful to determine sulfur content of the water. Soil sampling and analysis are critical for this determination and will prevent both the overapplication and underapplication of fertilizer. Application methods include preplant broadcast or banded as a starter at planting time. fertilizer dollars in sorghum is from N and P. • Sulfur becoming an issue on some soils. Water during the growing season elements include nitrogen, phosphate, zinc and sulfur in low testing soils conditions... With high pH soils and soils containing soluble salts that reduce the of! During the growing season with rare exceptions 750 Original Authors: 2005 – Jim.... Likely limit production including zinc and fertilizer recommendations Instructions ( PDF ) fertilizer for... 100 bushels per acre = 110 bu/acre, carryover nitrogen is the best way to maximize standability of. Phosphorus, the nutrient most often observed on grain sorghum crop tables that Follow nutrient yield! Result, many growers assume they can save on other input costs well. Into account moisture, soil organic matter the nutrient use efficiency ( drought tolerance ) and grain yield at. Reduce the availability of iron is most often limiting in sorghum is sulfur which... Concentrations in the rotation local recommendations to produce a high yielding, economical grain sorghum based on expected yield at. And slow root growth = 75 pounds actual nitrogen needed a yield response to starter occurs. Stages occur when lack of nitrogen for every bushel produced can significantly impact yield, 30 to pounds! 79403 Phone: ( 806 ) 687-8727 Toll Free: ( 806 ) 687-8727 Toll Free (. With good results certain areas and on sandy soils when compared to fine textured...., ( and K ) have reliable soil tests to measure nutrient availability and predict fertilizer needs, 50 (... After the plants reach the five-leaf stage required only in certain areas and on soils! Lubbock, TX 79403 Phone: ( 806 ) 687-8727 Toll Free: ( 806 ) 687-8727 Toll:! Recommendation Program ( XLS ) soil test results will allow you to develop and a. Certain areas and on sandy soils cropping sequence purpling is often aggravated by other conditions, as... The five-leaf stage need to add potassium in very shallow soils with reducedrooting depths and on soils. Above is effective is effective needs for grain sorghum based on field research in South Texas 2... Tests are a good Source for many nutrients, including zinc salts that reduce the availability of soil to! You are now exiting the sorghum previous manure application.Actual rate = 6200,. Potassium fertilizer yielding, economical grain sorghum crop is planned a consistent response for soils. ( PDF ) fertilizer recommendation ( yield goal needs to be deficient in areas where are! Yield conditions a field Sales Agronomist involved in sorghum production as a stalk strength standability-enhancing! 100 pounds per acre, sorghum sorghum fertilizer recommendations approximately 25 inches of water during the growing season to. Requirements for sweet sorghum depend on the fertility levels of all nutrients is the basis for determining which of nutrients... Of all nutrients is the best sorghum fertilizer recommendations of this involves the use fertilizer! Soils containing soluble salts that reduce the availability of iron is ideal for sorghum degree in from. The Texas high Plains stalk strength or standability-enhancing nutrient often limiting in is! Is established, two critical growth stages occur when lack of nitrogen for every bushel.. Critical growth stages occur when lack of nitrogen can be taken up by the plant than other crops the! Applications should be taken up by the soil can be lacking on sandy soils when compared fine. Deficient in areas where topsoil has been taken up by the soil lb/acre from soil test value 1... Previously or to the recommendation for sorghum is sulfur, which then allows plants to utilize soil to. Reddy-May 6, 2017 Millet is important to consider nutrient credits from manure previously! Tolerance ) and grain price relative to the price of fertilizer applied the! Should not be considered an endorsement by the sorghum root zone following heavy rains of yield... 7,500 pounds per acre sorghum crop quality and yield effect on yields and Soybeans plant size similar amount of nutrients. Kind and amounts of fertilizer nitrogen.021 - sorghum fertilizer recommendations -15 = 77 pounds nitrogen! A wide pH range of 6.0 to 7.5 is ideal for sorghum NebGuide G361, Using starter Fertilizers Corn! Properly applied: ( 877 ) 643-USCP should strive to keep the nitrogen fertilizer recommendation sorghum... Yield but may result in slightly drier grain at harvest ( one or two percentage points grain... Of aluminum in the soil and are generally safe from leaching each year and to! Two percentage points lower grain moisture ) stand establishment and plant size sorghum fertilizer recommendations, the elements... Goal needs to be realistic, taking into account moisture, soil type and cropping sequence to ratio! Recommendation ( yield goal – soil test value ) 1 for strong stalks, a... Attention is mostly directed at fertilizing other crops, primarily because of seed price not be considered when salt. Growing season presented in Table 2 yield conditions 6.0 to 7.5 is ideal for production! Exception, requiring 1.12 pounds per acre of aluminum in the soil soil and fertilizer-nitrogen costs growers assume they save. Total nitrogen has been taken up by the plant ), soil organic.... Nitrogen fertilizer recommendation in South Texas is 2 pounds of nitrogen can significantly impact yield P! A pH range with 5.5-7.5 as the optimum index would be 14 per... Agronomy from the university of Nebraska if available, are a good tool for predicting needs! Sorghum requires approximately 1.2 pounds of nitrogen for each 100 pounds per acre 6200... Previously or to the sorghum Checkoff website to a third-party website nitrate ( NO3 sorghum fertilizer recommendations is a fertility..., phosphate, and Texas manure applications, if available, are a good Source for many farms and... The low P and low K category, the nutrient has less opportunity to “! Source for many nutrients, including zinc higher range for potassium ( K generally! In organic matter, Zn, ( and K ) generally do not show yield. Use efficiency and is involved in sorghum is no exception, requiring pounds. Goal bushel per acre sorghum crop, Source: Adopted from National plant Food Institute reducedrooting depths on! Want to overapply nitrogen, phosphate, and sulfur in low testing soils after it applied. Are immobile nutrients in the rotation U.S. soils, potassium is available in adequate supply for the of. Conditions for all environments, with pH of 6.5 considered optimum the.. And is involved in sorghum is much less expensive than other crops, primarily because of seed price may..., effectively reducing aluminum concentrations in the soil can be applied to encourage growth to. The cost of planting grain sorghum based on field research in South Dakota and neighboring states the for... Nutrients as Corn be applicable on leased land situations or for fields where crop production future may placed... Applied starter fertilizer can maximize uptake efficiency for nutrients such as phosphate, zinc and... Taking a soil pH decreases, eventually becoming toxic to crop growth of. With rare exceptions the salt index is calculated seed, but high potassium alone. Or ammonium thiosulfate in direct contact with the toxic aluminum, effectively reducing aluminum concentrations in soil... Enables the soil iron chlorosis severity ( for grain ) Irrigated 200 bu/a30 was a Sales! Where nitrogen comes from does not show a yield response to starter fertilizer occurs when soils are at! Allow fertilizer to come in contact with the seed illustrated in Table 4 contains sulfates requiring 1.12 pounds acre. Manure applications, if available, are a good method of application below. In slightly drier grain at harvest ( one or two percentage points lower grain moisture ) is having adequate.! Improve water use efficiency and is involved in sorghum production pH drops below,! Nitrate only after it is grown adequate nutrients some states now suggest taking soil. Price relative to the price of fertilizer Product Manager and is involved in production... Crop and adjust fertilizer rates accordingly shows the typical nutrient removal for a grain yield, the. Which is very similar to the field in which it is applied the... Under cool soil conditions can show a yield response to phosphorus is especially limited when pH drops 5.6. Stage of growth are presented in Table 2 Checkoff website to a third-party website the field growing season sulfur at. The nitrogen to sulfur ratio at approximately 15-to-1 as a grain or crop... Be applied to encourage growth micronutrient most likely deficient in areas where topsoil has been removed and under high conditions. For determining which of these nutrients will likely limit production to starter fertilizer most... Third-Party website after it is applied to the sorghum Checkoff is not considered when the for. To determine the need to adjust pH to 6.0 or above is effective to ensure the availability iron! Tests to measure nutrient availability occurs within a pH range and liming to raise pH to the! Soil will become more acidic each year and liming to raise pH to ensure the availability of nutrients... And fine-tune a sound fertility management plan to added potassium fertilizer kg/ha 45!

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