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9/11, , Agricultural Crop, Production NC I, Quarter 3 – Module 2/Week 3-4, Apply Fertilizer Based on Crop, Requirements Following Safety, Procedures According to OSHS

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Agricultural Crop Production NC I, Quarter 3 – Module 2/Week 3-4: Apply Fertilizer Based on Crop Requirements, Following Safety Procedures According to OSHS., First Edition, 2020, Republic Act 8293, section 176 states that: No copyright shall subsist in any work of, the Government of the Philippines. However, prior approval of the government agency or office, wherein the work is created shall be necessary for exploitation of such work for profit. Such, agency or office may, among other things, impose as a condition the payment of royalties., Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names,, trademarks, etc.) included in this module are owned by their respective copyright holders., Every effort has been exerted to locate and seek permission to use these materials from their, respective copyright owners. The publisher and authors do not represent nor claim ownership, over them., Published by the Department of Education – Region XI, Regional Director: Evelyn R. Fetalvero, Assistant Regional Director: Maria Ines C. Asuncion, Development Team of the Module, Writers: Jadel A. Tenaja, Editors: Frieny Alagasi, Reviewers: Cosette C. Navales, Menard M. Arenas, Illustrator:, Layout Artist:, Template Developer: Neil Edward D. Diaz, Management Team: Reynaldo M. Guillena, Jinky B. Firman, Marilyn V. Deduyo, Alma C. Cifra, Aris B. Juanillo, Marcelo O. Roco, , Printed in the Philippines by ________________________, Department of Education – Department of Education Region XI, Office Address:, Telefax:, E-mail Address:, , Deped Davao City Division E. Quirino Ave., Davao del Sur, Philippines, (082) 334-0100, [email protected]

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9/11, Agricultural Crop, Production NC I, Quarter 3 – Module 2/Week 3-4:, Apply Fertilizer Based on Crop, Requirements Following Safety, Procedures According to OSHS, , 1

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Introductory Message, For the facilitator:, As a facilitator, you are expected to orient the learners on how to, use this module. You also need to keep track of the learners' progress, while allowing them to manage their learning at home. Furthermore,, you are expected to encourage and assist the learners as they do the, tasks included in the module., , For the learner:, As a learner, you must learn to become responsible for your, learning. Take time to read, understand, and perform the different, activities in the module., As you go through the different activities of this module be, reminded of the following:, 1. Use the module with care. Do not put unnecessary mark/s on any, part of the module. Use a separate sheet of paper in answering the, exercises., 2. Don’t forget to answer Let Us Try before moving on to the other, activities., 3. Read the instructions carefully before doing each task., 4. Observe honesty and integrity in doing the tasks and checking, your answers., 5. Finish the task at hand before proceeding to the next., 6. Return this module to your teacher/facilitator once you are done., If you encounter any difficulty in answering the tasks in this module,, do not hesitate to consult your teacher or facilitator. Always bear in, mind that you are not alone. We hope that through this material, you, will experience meaningful learning and gain a deep understanding of, the relevant competencies. You can do it!, , 2

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Let Us Learn, This module covers the knowledge, skills, and attitudes of students, required to apply fertilizer based on crop requirements following safety procedures, according to OSHS. It focused on learning the ability to prepare materials, tools, and, equipment for nursery work, hygiene, and quality control., This module was anchored on the following Learning Competencies in the Most, Essential Competencies (MELCs) in TLE Agriculture and Fishery Arts sector,, Agricultural Crop Production NC I., a. Apply pest control measure according to specific pest control measure, and OHS procedures, b. Apply fertilizer based on crop requirements following safety, procedures according to OSHS, c. Water crops following the prescribed method and schedule, d. Perform pruning following safety procedures according to OSHS and, PNS: PAES 101, e. Perform physical growth-enhancing practices based on crop requirement, W7, After going through this learning material, you are expected to:, 1. Determine the fertilizer analysis/grade in a fertilizer material;, 2. Calculate the number of fertilizer materials;, 3. Discuss the different methods of fertilizer application., , 3

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Let Us Try, Hello Learner! Let us find out how much you already know about fertilizer, application. Read and understand the questions below. Choose the letter of the best, answer and write it on your answer sheet., 1. Plants need food to nourish their parts. Which of the following substance is applied, to the soil to provide some important elements to nourish the plant?, a. Fertilizers, c. Macro elements, b. Pesticide, d. Micro elements, 2. Which of the following is the least observed factor in the application of fertilizer?, a. Nutrient requirement of the plant, b. The manner of applying the fertilizer, c. Environmental factors particularly rainfall, d. The capability of the farmer to apply fertilizer, 3. What method of fertilizer application is most applicable to seedlings for their, starter solution?, a. Fertigation, c. Foliar application, b. Broadcasting, d. Localized application, 4. Any abnormal appearance of the growing plant that may be caused by a deficiency, of one or more nutrient elements is noted by what method?, a. Soil analysis, c. Field fertilizer trials, b. Plant tissue analysis, d. Nutrient deficiency symptom, 5.Which is the primary function of nitrogen?, a. Hastens maturity, c. Forms and transfers starch, b. Aids in seed formation, d. Gives dark green color to plant, 6.When the fertilizer materials are uniformly scattered over the entire area, what is, the method of fertilizer application called?, a. Side-dressing, c. Foliar application, b. Broadcast method, d. Band or localized placement, 7.Which of the following is a method of applying fertilizer?, a. Soil analysis, c. Nutrient deficiency symptom, b. Field fertilizer trials, d. Foliar application of fertilizer, 8. Which is not a method of conserving soil fertility?, a. Application of organic fertilizer, c. Practice green manuring and intercropping, b. Practice cover cropping and mulching, d. All of the above, 9. Which fertilizer element hastens maturity, stimulates blooming, helps in seed, formation, and gives hardiness to plants?, a. Calcium, c. Potassium, b. Nitrogen, d. Phosphorus, 10. Which among the choices is a result of using chemical fertilizer?, a. Decomposed farm manures, c. Facilitate soil erosion, b. Improve soil physical conditions, d. Retain soil, 4

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Let Us Study, Before we proceed further, let us answer first the activity below. This activity, will only check your prior knowledge about the topic and things that you wanted to, know as we go through the module., So, are you ready? Let’s begin!, Try to analyze the picture below and think of a word that gives a general description, of it. Write your answer on a separate sheet of paper., , N, , P, , K, , http://bit.ly/3shK0M6, , Plants need a lot of things to survive. The absence of one of these things will have, the significant result to crop yield and its productivity., Apply Recommended Kind and Rate of Fertilizers, Plant food. Plants and animals require food for growth and development. This food, is composed of certain chemical elements often referred to as plant-food elements., , 5

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MacroElements, , Plant, Nutrient, , Chemical, Symbol, , Nitrogen, , N, , Phosphorous, , P2O5, , Functions, Promotes dark green color;, leaf, stem, and fruit, development; and hastens, growth and increases the, the protein content of the, crop., Favors rapid plant growth, and development; hasten, fruiting and maturity; and, improves the quality of the, crop., , K 2O, , Hastens, maturity;, stimulates blooming; aids, in seed formation; and, gives plants, hardiness., , Calcium, , Ca, , Corrects acidity; acts as a, protective sieve for the, nitrates to set through in, passing into the cells, and, acts as a cement between, the walls of the cells to, hold them together., , Magnesium, , Mg, , Sulfur, , S, , Manganese, , Mg, , Potassium, , B, Boron, , 6, , The key element in, the molecule of chlorophyll, and Mg combines with the, phosphates so that the, latter can move to their, proper places in the plant., Gives green color to the, younger leaves including, the veins., Gives green color to the, younger leaves including, the veins., Boron hunger results in a, reddish-yellow, discoloration and often, there is a purplish tone,, first seen on the margins, of the leaves or the tip half.

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Copper, , Cu, , Zinc, , Zn, , Iron, , Fe, , Molybdenum, , Mo, , Chlorine, , Cl, , Helps in seed stalk, formation., Treats abnormally small, leaves or leaves that are, yellow or mottled in, appearance., Treats chlorosis, Influences the utilization of, nitrogen by the plant and it, is required before nitrogenfixing bacteria can utilize, atmospheric nitrogen., Tends to concentrate in, some plants, in the veins, and floral parts, and, appears, to, be, tied, up in some way in, the formation of the red,, blue, and violet pigments., Hastens maturity., , Table 1. Plant Food Element and their Functions, Plant food refers to the necessary materials which a plant uses so it can build new, tissues and, at the same time, carry on its normal functions., According to Mcvickar (1970), fertilizer is any manufactured or processed material, or mixture of materials that contains one or more of the recognized plant-food, elements, in liquid or dry form., On the other hand, INGO (2005), claimed that fertilizer is any organic or inorganic, material of natural or synthetic origin, which is added to the soil to supply certain, elements essential to plant growth. Fertilizers are used to increase the growth rate,, yield, and quality or nutritive value of plants. The manual explained further that for, many decades in the past, the term fertilizers practically meant commercial fertilizers, of non-living origin. In recent years, however, increasing attention has been focused, on organic and bio-fertilizers that are biological sources of plant nutrients., The proper usage of fertilizers requires knowledge not only of their properties but, also of their effects on soil. The amount of fertilizer to be applied depends on many, factors, which include the nutrient requirement of the plants, the ability of the soil, to supply nutrients, yield potential, other management practices, the capability of, the farmer, and other environmental factors particularly rainfall., , 7

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Kinds of fertilizer, Organic fertilizers are farm manures, compost, crop residues, and other farm, wastes, which supply nutrients and improve soil physical conditions. Organic, fertilizer is generally the most valuable soil conditioner. As soil conditioners, organic, fertilizer helps prevent soil erosion, crushing, and cracking of soil. They retain soil, humidity and improve the internal drainage of the soil. These fertilizers should serve, as a supplement to inorganic fertilizers., Again, Sangatan and Sangatan (2000) enumerated the sources of organic fertilizer, as follows:,  Animal wastes: cattle, carabao, pig, goat, poultry, and horse manure or urine,, etc.,  Crop wastes: rice straw, corn stalks, weeds, stubbles, plant leaves, husks, etc.,  Human inhabitation wastes: night soil, sewage, and garbage,  Green manure: ipil-ipil leaves, legumes, and madre de cacao leaves,  Water crops or plants: water hyacinth (water lily), water alligator, and water, lettuce,  Biological organic sources: Azolla, and blue-green algae,  Silt, river mud, and pond mud,  A by-product of biogas digester, digested sludge, and effluent,  Other sources: animal bone, ash, seaweeds, and guano (bat manure), Inorganic (chemical) fertilizers) usually result from chemical processes such as, sulfuric acid treatment or rock phosphate to produce superphosphate. It consists of, materials processed or transformed into a chemical material or fertilizer., Types of fertilizer based on the fertilizer element present, 1. Single element fertilizer contains only one of the major fertilizer elements., Examples: Ammonium sulfate, urea, and superphosphate, 2. Incomplete fertilizer contains only two major elements like amorphous, (nitrogen and phosphorus)., 3. A complete fertilizer contains the three primary plant food elements: nitrogen,, phosphorus, and potassium., Table 8. Analysis of common inorganic or commercial fertilizers (INGO 2005), Percent, Material, Anhydrous ammonia, , N, , P2O5, , K2O, , 82, , 0, , 0, , 8

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Ammonium sulfate, , 21, , 0, , 0, , Ammonium phosphate, , 16, , 20, , 0, , Ammonium chloride, , 25, , 0, , 0, , Urea, , 46, , 0, , 0, , Superphosphate, , 0, , 20, , 0, , Trial superphosphate, , 0, , 48, , 0, , Muriate of potash, , 0, , 0, , 60, , Sulfate of potash, , 0, , 0, , 50, , 14, , 14, , 14, , Complete, Fertilizer Computation, , To supply a certain amount of plant nutrients, determine the amount of fertilizer to, be applied per hectare based on the composition of the fertilizer materials to be used., Here are some examples of how to determine the amount of fertilizer., According to Bautista as cited by Natural (Undated), fertilizer grade or analysis refers, to the minimum guarantee of the nutrient content in terms of percent total N, percent, available P2O5, and percent water-soluble K20 in a fertilizer. For example, the fertilizer, grade of ammonium sulfate contains 21 kg available N but it does not contain P 2O5, and K2O, therefore the remaining 79 kg represents the materials termed as” carriers”, or “fillers”. A mixed complete fertilizer with a grade of 12-24-12 contains 12%N, 24%, available P2O5, and 12% K2O, respectively., The fertilizer recommendation is expressed in kilograms N, kilograms P 2O5, and, kilograms K2O per hectare, respectively. In technical publications, this is written as,, 90-60-30. This recommendation involves the application of 90 kg N, 60 kg P2O5, and, 30 kgK2O5 per hectare, respectively., To calculate the weight of fertilizer, divide the recommended rate by the nutrient, content of the fertilizer material (from the grade or analysis). Thus:, 1.) Weight of fertilizer material = Recommended Rate, Nutrient content of the fertilizer, , 9

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To get the number of fertilizer bags, divide the weight of nutrients required by the, percent nutrients in the fertilizer, thus:, 2.) Number of fertilizer /bag = Weight of nutrients, % nutrients in the fertilizer, Sample Computations:, A. Recommended rate: 90-60-30 NPK/ha. Compute the amount of fertilizer, needed given the following Fertilizer materials., a. Urea (45-0-0), b. Ordinary Superphosphate (0-20-0), c. Muriate of Potash (0-0-60) Formula:, Amount of fertilizer Material/ha= Recommended Rate of the Nutrients, % nutrients in Fertilizer, Solution:, 1. Urea (46-0-0), = 90kg N/ha, 0.45, = 200kg or 4 bags, since 1 bag contains 50kg, 2. Superphosphate (0-20-0), = 90Kg P/ha, 0.20, = 150 kg or 3 bags, 3. MOP (0-0-60), = 60kg K/ha, 0.60, = 100 kg or 2 bags, B. If one bag of fertilizer material contains 50kg, calculate the amount of N-P-K, contained in each bag of the following:, a. Urea (45-0-0), b. Ammonium Phosphate (18-46-0), c. MOP (0-0-60), Formula:, , Number of fertilizer /bag = Weight of nutrients, % nutrients in fertilizer, Thus, weight of nutrients, = no. of fertilizer/bag x % nutrients in fertilizer, Solution:, 1. Urea (45-0-0) = 50 kg x 0.45, = 22.5 kg N, 2. Ammonium Phosphate (18-46-0), = 50kg x 0.18, = 9kg N, = 50kg x 0.46, = 23 kg P, 3. MOP (0-0-60)= 50kg x 0.60, = 30 kg, 10

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Methods of fertilizer application, Villegas and Malixi (1977) stated that to get the maximum benefit, the fertilizer must, be applied where the plant can readily absorb it. Proper placement of fertilizer will, provide an efficient and continuous supply of plant nutrients and will prevent salt, injury to the seedlings. The following are the different methods of fertilizer, application:, 1. Broadcast method- The fertilizer material is applied uniformly over the entire, area before planting or while the crop is growing. Topdressing refers to the, broadcast application on growing crops. Uniform distribution of the fertilizer, enables the safe application of large quantities of fertilizer without injuring, the crop. However, it may reduce fertilizer efficiency because of fertilizer, fixation or by volatilization., 2. Localized application- The fertilizer is applied close to the seed or plant,, either in a band adjacent to the plant rows (side dressing) or by the plow-sole, application. In the plow-sole method, the fertilizer is covered lightly with soil, before seeding or planting. Localized application is essential for high rate, applications of high analysis fertilizers. This method is commonly used for, most vegetables., 3. Foliar application- Plant nutrients may be applied to the aerial part of the, plant. The dissolved nutrient must penetrate the cuticle of the leaf or the, stomata and then enter the plant cells. This method is usually employed only, in applying micronutrients. Marginal leaf-burn could occur with the, application of high concentrations of fertilizer., 4. Applied with the seed – Fertilizer is broadcast together with the seeds or the, seeds are coated with fertilizer using an adhesive such as selloffs or gum, Arabic., 5. Fertigation – This involves dissolving the fertilizer materials in water and, then applying it with the use of a sprinkler., OCCUPATIONAL SAFETY AND HEALTH STANDARDS in Fertilizers Application, Handling of Fertilizers,  Fertilizers shall not be left unattended to when not in use;,  Fertilizers shall be prepared by mechanical means in closed vessels. However,, if closed mechanical preparation is impracticable:,  Tall vessels and long-handled implements shall be used to reduce the risk of, splashing;,  Vessels shall not be filled to avoid splashing.,  Unbreakable vessels shall be used in the preparation of toxic fertilizers., , 11

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, , , , , , , , , , , , , , Protective clothing, like boots, gloves, goggles, and face shields shall be used, when mixing, diluting, spraying, or spreading toxic fertilizers., Spillage of fertilizers and contamination shall be prevented. Spillage shall be, thoroughly cleaned immediately., Whenever practicable, apply toxic fertilizers by mechanical means., Immediately after spraying toxic fertilizers in a greenhouse, the employers, shall:, a. requires all persons entering the greenhouse to be properly protected;, b. post notices on all gates of the greenhouse stating how long the area is to, remain closed before the entry of persons without proper protection are, allowed., Workers using toxic fertilizers shall not:, a. blows out blocked spray pipes or nozzle with the mouth;, b. spray or spread fertilizers against the direction of the wind., Decontaminate the exterior of all tanks and containers in which toxic, fertilizers are stored., Securely close the opening of all tanks and containers in which toxic fertilizers, are kept., Tanks and piping shall: a. be regularly checked for damage and b. be provided, with stop valves or other devices that can effectively prevent or limit the escape, of the substance., Fertilizers shall be transported only in suitable vehicles to ensure protection, to the driver and other users of the vehicles., Handling of organic fertilizers shall be by mechanical means to minimize, direct contact with such fertilizers or in the absence of mechanical means,, proper protection during handling shall be required. (14) Personal protective, equipment shall be provided too, and used by workers when applying mineral, fertilizers., , Proper Storage of Fertilizer,  Storage place for fertilizers shall be well lighted to facilitate easy identification, of chemicals.,  Storage building shall be sound, weather-proof, water-tight, and fireresistant.,  Storage rooms or buildings shall be locked to prevent the entry of, unauthorized persons or animals.,  Fertilizers shall be stored separately from other material and in particular;, away from food and feeding stuff.,  Fertilizers of different kinds shall be stored separately in sacks or containers, on skids or platform and kept away from walls and combustible materials., , 12

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Let Us Practice, Matching Type. Match the name of fertilizers in column A with the correct Analysis, in column B. Write the letter on the space provided before the number. Do it on your, answer sheet., , Column A, , Column B, , ___________, , 1., , Ammonium Sulfate, , a. 14 – 14 – 14, , ___________, , 2., , Urea, , b. 0 – 0 – 60, , ___________, , 3., , Muriate of Potash, , c. 45 – 0 – 0, , ___________, , 4., , Sulfate of Potash, , d. 21 – 0 – 0, , 5., , Complete Fertilizer, , e. 0 – 0 - 50, , ___________, , 13

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Let Us Practice More, Answer the following problem-solving. Read and follow the rubrics below. Write your, answer on your answer sheet., 1. The result of Mang Kanor soil analysis shows that his farm requires 60N –, 60P – 60K. How much amount of fertilizer does he need using the following, fertilizer materials?, a. Urea (46 – 0 – 0), b. Superphosphate (0 – 20 – 0), c. Sulfate of Potash (0 – 0 – 50), , 2. If Mang Kanor has the available fertilizer materials of complete, ammonium, sulfate and sulfate of potash, how much amount of N-P-K have in each bag of, fertilizer?, , 3. Compute the number of kilograms needed of ammonium sulfate (21%N),, ordinary superphosphate (20%P), and muriate of potash (60%K) to meet the, 90-60-30 recommendation., , Rubrics, , Understanding, , Computation, , 5 points, , 3 points, , 2 points, , 1 point, , Complete, understandin, g of the, problem., , Basic, understanding, of the problem., , Limited, understanding, of the problem., , No, understanding, of the problem, , All, computations, are complete, and correct, , Computation, is generally, correct but, contains minor, flaws, , Computation, is generally, incorrect, and/or, incomplete, , Computation, is incorrect, , 14

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Let Us Remember, Fertilizer applications are essential, may it be organic or inorganic fertilizer. This is to, provide crops with the nutrients they need to grow and be harvested for nutritious food., To do this, one should always remember these things;, 1. Package fertilizers are contained three macronutrients; Nitrogen (N), phosphorous, (P), and Potassium (K). These are important ingredients in the production of high, quality, effective fertilizers., 2. The kind of fertilizer to use depends upon the chemical form in which nutrients, element is supplied. Thus, computing the rate of fertilizer plays an important role., 3. To get maximum benefit, the fertilizer must be applied where the plants can readily, absorb it. Correct methods fertilizer application will provide an efficient and, continuous supply of plants nutrients. These methods are broadcast, localized, application, foliar, applied with the seeds and fertigations., 4. Fertilizers are important to the security of the food supply in any part of the world, and they must be used properly., 5. Farmers or even fertilizers producers are required to participate and observe the, Occupational Safety and Health Standard in the use of fertilizers to protect, everyone’s safety., , 15

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Let Us Assess, Well done learner! This time, let us check how much you can remember about, fertilizer application. Read and understand the questions below. Choose the letter of the, best answer and do it on your answer sheet., 1. Which of the following is the least observed factor in the application of fertilizer?, a. Nutrient requirement of the plant, b. The manner of applying the fertilizer, c. Environmental factors particularly rainfall, d. The capability of the farmer to supply fertilizer, 2. Plants need food to nourish their parts. Which of the following substance is applied to, the soil to provide some important elements to nourish the plant?, a. Fertilizers, c. Macro elements, b. Pesticide, d. Microelements, 3. Which method of fertilizer application is most applicable to seedlings for their starter, solution?, a. Fertigation, c. Foliar application, b. Broadcasting, d. Localized application, 4. Which is the primary function of nitrogen?, a. Hastens maturity, c. Forms and transfers starch, b. Aids in seed formation, d. Gives dark green color to plant, 5. When the fertilizer materials are uniformly scattered over the entire area, what is the, method of fertilizer application called?, a. Side-dressing, c. Foliar application, b. Broadcast method, d. Band or localized placement, 6. Any abnormal appearance of the growing plant that may be caused by a deficiency of, one or more nutrient elements is noted by what method?, a. Soil analysis, c. Field fertilizer trials, b. Plant tissue analysis, d. Nutrient deficiency symptom, 7. Which fertilizer element hastens maturity, stimulates blooming, helps in seed formation,, and gives hardiness to the plants?, a. Calcium, c. Potassium, b. Nitrogen, d. Phosphorus, 8. Which of the following is a method of applying fertilizer?, a. Soil analysis, c. Nutrient deficiency symptom, b. Field fertilizer trials, d. Foliar application of fertilizer, 9. Which among the choices is a result of using chemical fertilizer?, a. Decomposed farm manures, c. Facilitate soil erosion, b. Improve soil physical conditions, d. Retain soil humidity, 10. Which is not a method of conserving soil fertility?, a. Application of organic fertilizer, c. Practice green manuring and intercropping, b. Practice cover cropping and mulching d. all of the above, 16

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Let Us Enhance, Direction: Analyze the pictures below and discuss what method of fertilizer, application is being used. Write your answers on your answer sheet., , 1, , 2, , 3, , 4, , Rubric, , Discussion, , 5 points, Discussion is, detailed,, clear,, and, correct., , 3 points, The discussion, is clear and the, answer, is, correct., , 17, , 2 points, Discussion is a, little difficult to, understand, but identify the, correct answer., , 1 point, Discussion is, vague, and, incorrectly, identify, the, right answer.

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Let Us Reflect, Try to reflect and understand the situation below, and answer the questions, next to it. Please use your answer sheet for your reflection., , http://bit.ly/3ifjgHC, , One morning you visited your vegetable garden, then you found out that your plants, suffer from nutritional deficiency. What are you going to do? What type of fertilizer, material are you going to apply and why?, Rubrics, Criteria, , Critical, Thinking, , Personal, Reflection, , Outstanding, 5, , Proficient, 3, , Basic, 2, , Rich in the, content;, insightful, analysis, Clear, to real-life, situations or to, previous, content, , Substantial, information;, evidence of, analysis,, general, connections are, made but are, sometimes too, obvious or not, clear., Connects ideas, and thoughts to, personal life;, Evidence of, personal, connection to, learning,, community, , Information is, thin and, commonplace;, connections are, limited, vague, generalities are, posted, , Entries are high, quality, consisting of, personal, reflection that, connects, between reallife, learning,, and reading, , 18, , Little evidence, of a personal, connection,, many, connections, need further, explanation or, justification, , Below, expectation, 1, Rudimentary, and superficial;, little analysis;, little or no, connections, with any other, material or are, off-topic., Lack of, connection to, personal life

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Let Us Enhance, See attached rubrics, Let Us Reflect, See Attached Rubrics, , 19, Let Us Practice More, See attached rubrics, Let Us Assess, 1., 2., 3., 4., 5., 6., 7., 8., 9., 10., , C, A, A, D, B, D, C, D, C, D, , Let Us Try, A, 6. B, 1., 2., 3., 4., 5., , B, A, D, D, , 7. D, 8. A, 9.C, 10. C, , Let Us Study, FERTILIZER, Let Us Practice, 1. D, 2. C, 3. B, 4. E, 5. A, , Answer Key

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References, , Garcia, L.B., P.C. de Castro, R.G. Asuncion, Jr., A.J. Gamiron, E.B. Javier, E.D., Serrano, A.B. Resureccion, and S.A. Yano. 1991 Safety Precautions When, Working. In: Technology and Home Economic II. First Edition. Instructional, Materials Corporation (IMC), University of the Philippines, Diliman, Quezon, City, Philippines. 390 pp., INGO (2005) Resource Manual on Integrated Production and Pest Management, (IPPM) in Vegetables. World Education (INGO) Philippines, Inc. 2999 National, Road, Amos, Los Banos, Laguna, Philippines., Mcvickar, Malcolm H. 1970.Using Commercial Fertilizers: Third Edition, The, Interstate Printers and Publishers, Inc. Danville, Illinois, Nitural, P. S. Undated. Fertilizer Management in Vegetable Production. Lecture Note, in Horticulture 200 – Vegetable Production. College of Agriculture, Central, Luzon State University, Science City, Munoz, Nueva Ecija, Philippines., , For inquiries or feedback, please write or call:, Department of Education – Region XI, F. Torres St., Davao City, Telefax: (082) 224 - 0100, Email Address: [email protected], , 20