| What happens to the flow rate when volume-booster nozzles are used for agitation? | used for agitation, the flow rate can be reduced to 2 to 3 gallons per minute for every 100 gallons of tank capacity | For simple hydraulic jet agitators, a flow rate of 6 gallons per minute for every 100 gallons of tank capacity is sufficient. If volume-booster nozzles are used for agitation, the flow rate can be reduced to 2 to 3 gallons per minute for every 100 gallons of tank capacity. If a liquid-fertilizer type applicator is used with a metering pump, agitation must also be supplied. | 156 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | If volume-booster nozzles are used for agitation, the flow rate can be reduced to 2 to 3 gallons per minute for every 100 gallons of tank capacity. | 22 | page=22,block=2 | 0.850 | valid |
| What is the purpose of the information provided about sulfur-containing nitrogen solutions? | intended as a guide only | Sulfur-containing nitrogen solutions can be particularly troublesome. The information presented below is intended as a guide only. The term “compatibility” as used here refers to chemical and physical compatibility and is not intended to supplant label directions. | 105 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | The information presented below is intended as a guide only. | 22 | page=22,block=2 | 0.850 | valid |
| What should be done if side placement equipment is unavailable for fertilizer application? | not available, place the fertilizer deep in the row so it will be 3 to 5 inches below the roots of the transplants | This distance reduces the chance of placing plants in fertilizer bands. If side placement equipment is not available, place the fertilizer deep in the row so it will be 3 to 5 inches below the roots of the transplants. Seedlings of small grain or plants such as clovers, grasses, and alfalfa respond very early to phosphate; consequently, it can be advantageous to place phosphate close to the seed as is done with the conventional grain drill. | 103 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | If side placement equipment is not available, place the fertilizer deep in the row so it will be 3 to 5 inches below the roots of the transplants. | 24 | page=24,block=6 | 0.850 | valid |
| What condition must be met for a nutrient to be accessible to plants? | at least some of a nutrient must be slightly soluble in the soil solution | Solubility of Selected Fertilizer Materials To be available to plants, at least some of a nutrient must be slightly soluble in the soil solution. The amount of substance that will dissolve at a given temperature in water is known as its solubility. Solubility of most chemicals is slightly higher at higher temperatures; that of others, especially ammonium and potassium nitrates, increases rapidly with temperature. The presence of other substances in the solution may either increase or decrease solubility. The solubility of selected pure fertilizer materials in water at 32 degrees F is shown below. | 71 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Solubility of Selected Fertilizer Materials To be available to plants, at least some of a nutrient must be slightly soluble in the soil solution. | 21 | page=21,block=2 | 0.700 | valid |
| What condition must be met for a nutrient to be available to plants? | at least some of a nutrient must be slightly soluble in the soil solution | Solubility of Selected Fertilizer Materials To be available to plants, at least some of a nutrient must be slightly soluble in the soil solution. The amount of substance that will dissolve at a given temperature in water is known as its solubility. Solubility of most chemicals is slightly higher at higher temperatures; that of others, especially ammonium and potassium nitrates, increases rapidly with temperature. The presence of other substances in the solution may either increase or decrease solubility. The solubility of selected pure fertilizer materials in water at 32 degrees F is shown below. | 71 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Solubility of Selected Fertilizer Materials To be available to plants, at least some of a nutrient must be slightly soluble in the soil solution. | 21 | page=21,block=2 | 0.700 | valid |
| What is the purpose of adding a compatibility agent to one jar during the compatibility test? | to indicate the compatibility agent has been added | How to Test Compatibility of Herbicides with Fluid Fertilizers W. Everman, Crop Science, and C. R. Crozier, Soil Science Follow the compatibility test procedures on the herbicide label. If not on the label, follow the directions listed below. 1. Put 1 pint of fluid fertilizer in each of two 1-quart jars. 2. Following the adjacent table, add 0.25 to 0.375 teaspoon of a compatibility agent to one jar and shake for 5 or 10 seconds to mix. One-fourth teaspoon is equivalent to 2 pints/100 gallons of fluid fertilizer. Mark the jar “with” to indicate the compatibility agent has been added. 3. Next, add the proper amount of herbicide to each jar, according to the table. For herbicides used in small quantities per acre, one will need a greater volume of fluid fertilizer for the compatibility test. | 538 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Mark the jar “with” to indicate the compatibility agent has been added. | 23 | page=23,block=2 | 0.700 |
| What is the purpose of applying dolomitic lime to the soil? | Maintain soil pH above 6.0 | If leaching is severe, apply 20 to 30 pounds N/acre after harvest. Growth and fruit development of mature trees N, P2O5, and K2O 70 lb/acre of each (Determine by soil and foliar analysis.) Broadcast under trees 40 pounds/acre each of N, P2O5, and K2O (for example, 400 pounds/acre 10-10-10) before growth starts. Add 30 pounds/acre of N, P2O5, and K2O after fruit set. If soil test phosphorus is high, omit P in second application. If leaching is severe, apply 30 pounds N/acre after harvest. Increase boron level of tree Solubar Apply boron to producing trees by spraying foliage with Solubor or equivalent product at a rate of 0.75 pounds Solubor/100 gallons of water once each year. Soil pH maintenance Dolomitic lime Maintain soil pH above 6.0. | 721 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Soil pH maintenance Dolomitic lime Maintain soil pH above 6.0. | 5 | page=5,block=38 | 0.700 | valid |
| What is the purpose of using leaf tissue analysis in vineyard management? | to monitor nutrient uptake and fine-tune fertilization program | A final application of calcium nitrate is applied in late June at 133 pounds /acre (provides 20 pounds N per acre). Use leaf tissue analysis to monitor nutrient uptake and fine-tune fertilization program. Tissue samples should be collected in early to mid-June. Collect a double fist full of mature leaves located opposite fruit clusters on fruiting shoots. Detach the petioles from the leaves before placing the leaf blades in a paper bag. Send samples to the Agronomic Division, NC Dept. of Agriculture and Consumer Services (see Chapter 3). B 1 lb Solubor/acre For mature vineyards, a common recommendation has been to apply 1 pound of Solubor (20% boron) annually with 100 gallons of water per acre just before bloom. Boron deficiency is more likely on sandy soils with high pH. Excessive boron causes injury; do not exceed boron recommendations. | 141 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Use leaf tissue analysis to monitor nutrient uptake and fine-tune fertilization program. | 6 | page=6,block=43 |
| What type of fertilizer placement is commonly referred to as 'pop-up' placement? | application directly in contact with the seed | Fertilizer placed in contact with or too close to seeds and young plants can cause salt injury, resulting in poor stands and slow starts. Nonuniform broadcasting of fertilizer with shallow mixing just before planting may give streaks through the field due to delayed germination or seedling injury. Salt injury is most severe in dry weather or following light rains that dissolve the fertilizer salts and leave highly concentrated salt solutions in the root zone. Nitrogen and potassium salts account for most of this injury. To reduce salt injury risk, a side-band placement of starter fertilizer at planting is generally preferred over application directly in contact with the seed, commonly referred to as “pop-up” placement. | 638 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | To reduce salt injury risk, a side-band placement of starter fertilizer at planting is generally preferred over application directly in contact with the seed, commonly referred to as “pop-up” placement. | 24 | page=24,block=6 | 0.700 |
| What type of soil conditions are necessary for successfully growing blueberries in most North Carolina soils? | an acid soil with an organic matter content (HM%) above 3%, with good aeration and constant moisture | test report Most NC soils require modification (raised beds, organic additions) to grow blueberries successfully, with the exception of certain high-organic, acid soils in the coastal plain. Blueberries require an acid soil with an organic matter content (HM%) above 3%, with good aeration and constant moisture. A soil pH of 5.0 or less is needed for highbush and southern highbush blueberries. Rabbiteye blueberries will tolerate slightly higher pH, up to 5.3. Sulfur at a rate of 1 pound per 100 square feet can be used to lower pH one point (for example, from 6.0 down to 5.0). Use 2 pounds per 100 square feet on heavier soils. Where needed, apply sulfur one year in advance and re-test prior to planting. Do not over-apply sulfur. Growth first year N, P2O5, and K2O 40 to 80 lb 14-28-14/acre per application Apply after first flush of growth and repeat every 4 to 6 weeks until mid-August. | 211 | definition | 1.000 | https://agritech.tnau.ac.in/horticulture/pdf/tech_bulletin/fertilizer-use.pdf | Blueberries require an acid soil with an organic matter content (HM%) above 3%, with good aeration and constant moisture. |