Seed rate calculation
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Seed rate is the number of seeds planted per area to achieve an adequate plant population. Understanding seed rate is important to maximize crop yields by ensuring the correct plant density. To calculate seed rate, determine the target plant population, seed germination percentage from testing, expected field establishment percentage, seeds per kilogram, and use the formula: Planting Rate = Target population / (Seeds per kg x Establishment % x Germination %). For example, with a target of 800,000 plants/ha, 90% germination, 75% establishment, and 27,500 seeds/kg, the seed rate is 43 kg/ha.
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Performance Evaluation of Early Maturing Ground Nut Varieties in West Guji lo...
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Groundnut is an important oil seed crop, grown throughout the tropics and sub tropics worldwide. It is one of the three economically important oilseed crops grown in Ethiopia. Groundnut is commonly produced by small scale farmers as food and cash crops in the study area. The area has potential to the production of Ground nut for food and nutrition security as well as export commodity. However, scarcity of varieties that fit to the environment is one of the major constraints of production. Therefore, this experiment was conducted to evaluate five Ground nut varieties and select early maturing varieties with considerable yield and agronomic traits. The field experiment was conducted in 2017 and 2018 at Abaya and varieties were planted in Randomized complete block design (RCBD). Data were collected on yield and important agronomic traits. The computed analysis of variance revealed significant variations among varieties for days to maturity, number of primary branches, number of pegs per plants, Grain yield and shelling percentage. The pooled over year mean of varieties indicated , Tole- 1 variety ( Check) is high yielding with mean grain yield of 4174.7kg followed by variety Sedi (3552.5kg/ha) and Babile local (3550.4kg/ha).Variety Sedi has special merit in terms of earliness and therefore recommended for moisture stress areas of Abaya and location with similar agro ecologies while Tole -1 (Standard check) is high yielding varieties and should be used in production until new varieties will be developed through selection/breeding program.Β
Forage Seed Production Training Manual, Africa
This document provides an overview of a training manual on forage seed production published by the International Livestock Centre for Africa (ILCA). The manual covers topics such as field multiplication, post-harvest conditioning, seed quality control, marketing, and economics. It describes four major systems of forage seed production in sub-Saharan Africa - opportunist labor intensive, opportunist mechanized, specialist labor intensive, and specialist mechanized. The first chapter focuses on field multiplication, including factors like site selection, matching forages to sites, crop establishment and management, and harvesting methods.
Manual of blue nile crop assessment
The document is a manual that provides guidance to extension officers on how to estimate crop yields through rapid crop assessments using photographs to compare crop conditions and yields. It outlines a 5-step process for officers to classify crops as sole, intercrops, or mixed; estimate plant densities; determine if crops are good, medium, or poor; estimate yields by comparing to photo examples; and account for field variability. The goal is to help officers reliably estimate crop amounts and compare their assessments.
Seed testing and sampling
it also contains content related to seed sampling. The various seed tests along with their explanation.
Genetical and agronomical principles of seed 'production , methods of seed pr...
Genetical and agronomical principles of seed 'production , methods of seed pr...DHANUKA AGRI ACADEMY
This document discusses principles and practices of vegetable seed production. It outlines genetic and agronomic principles that must be followed to produce high quality, genetically pure seeds. These include using approved seed sources, isolation distances to prevent natural crossing, roguing to remove off-types, and following quality control standards. It then describes the specific process for onion seed production, including selecting bulbs, land preparation, planting, irrigation, harvesting, curing, storing bulbs, and planting the next season for seed production. Pest and disease management is also covered. The goal is to apply these principles to obtain true-to-type seeds through the seed production process.Β
my ppt.pptx
Crop yield refers to the amount of crop harvested per area of land and is an important metric for determining food production efficiency. There are several ways to increase crop yields, including planting early when soil conditions are suitable, rotating crops seasonally to diversify soil demands, scouting fields to monitor growth and identify issues, ensuring proper water drainage, utilizing fertilizers, testing soil conditions, weeding early and often, and using high quality seeds adapted to the climate. Together, combining traditional farming knowledge with modern technologies can help farmers optimize their crop yields.
Quality seed production in soybean
This document provides information on quality seed production technology in soybean. It discusses the importance of using certified seed sources and following standards for genetic, physical and germination purity. Key steps in the production process include field selection and preparation, variety selection based on yield and duration, seed treatment, fertilizer application, irrigation, and multiple field inspections for roguing. Harvesting is recommended when pods dry down to 15-17% moisture and proper drying, storage and packaging are essential to maintain seed quality.
Groundnut Seed Production Manual
This document provides information on groundnut seed production practices and crop management. It discusses the different classes of groundnut seed, including nucleus, breeder, foundation, and certified seed. It outlines seed certification standards and the inspection process. The document also covers technical aspects of groundnut seed production such as soil and climate requirements, field isolation, crop rotation, land preparation, fertilizer use, seed selection and treatment, planting methods, and crop maintenance practices.
Post-harvest losses in Ethiopia: measures and associates
This document summarizes preliminary results from a study on post-harvest losses in Ethiopia conducted by researchers from FAO-MAFAP and IFPRI-ESSP. Some key findings include:
- Around 40-50% of households storing cereal crops reported losses during storage, with losses averaging around 5-7% of stored quantities.
- Factors associated with higher losses included higher household wealth, proximity to urban areas, and higher humidity during storage. Higher seasonal price gaps and temperatures were linked to lower losses.
- Most households stored crops for 3-6 months, and losses generally increased the longer crops were stored. The majority of households reported minor losses of 1-10% of stored quantities.
Seed sampling
This document discusses seed lot sampling techniques. It defines a seed lot and explains that representative sampling is important to obtain accurate test results. There are different types of samples including service samples sent by individuals, official samples taken by inspectors, and certified samples taken by certification agencies using a four step process. Primary samples are drawn from different parts of a seed lot and combined into a composite sample, which is then reduced to a submitted sample for testing. Sampling intensity depends on the size of the seed lot, ranging from sampling each container for small lots to one sample every 700kg for very large lots. Common sampling methods and equipment are also described.
Wiswall farming smarter
This document provides templates and worksheets for farmers to plan their operations and analyze costs and profits. It includes templates for a marketing chart, production plan, seedling calendar, and crop journal. It also provides worksheets to calculate labor costs, delivery costs, farmers' market costs, and annual overhead costs. The templates and worksheets are designed to help farmers establish sales projections, production plans, and cost analyses to determine profitability.
Seed germination percentage calculation
A germination test measures the percentage of viable seeds in a seed lot that are able to germinate under favorable conditions. The test involves taking random samples from seed bags, placing a set number of seeds on moist material in trays, and counting the number that sprout over 5 days. Calculating the germination rate by dividing the number germinated by the total seeds tested and multiplying by 100 provides an estimate of field performance and helps farmers adjust planting rates accordingly.
Similar to Seed rate calculation (20)
Performance Evaluation of Early Maturing Ground Nut Varieties in West Guji lo...
Performance Evaluation of Early Maturing Ground Nut Varieties in West Guji lo...
Β
Genetical and agronomical principles of seed 'production , methods of seed pr...
Genetical and agronomical principles of seed 'production , methods of seed pr...
Β
Post-harvest losses in Ethiopia: measures and associates
Post-harvest losses in Ethiopia: measures and associates
Β
Seed rate calculation
- 1. Seed Rate Calculation By: Sayed Mohammad Naim KHALID Jan 2012 Kabul, Afghanistan What is seed rate? Seed rate is the number of seeds to be planted in a specified surface or area to achieve an adequate stand. Seeding rates for cereals are still commonly given in figures of kilograms of seed per hectare or Jirib. Such rates are both convenient and useful to indicate the approximate quantity of seed that is required. Why understanding seed is rate important? The correct plant population is an important factor in maximizing yield of crops. It will help the overall health of the plant and vigor of the plant. To obtain the targeted population it is necessary not only to have quality sowing seed but also be able to accurately calculate seeding rates. It is surprising the difference a slight variation in seed size or germination makes to the seeding rate required to achieve a target plant density. Seed size, quality and germination vary between varieties, from year to year, from field to field and should be checked for each seed line to be used. How to calculating seeding rate? Tools 1. Balance 2. Calculator 3. Paper and pen Procedure 1. Know your target population goal or plants per hectare 2. Know the results of a germination test which provides an indication of expected plant establishment in the field, 3. Know the expected plant establishment 4. Know Thousand Kernel Weight (TKW) for the seed to be planted. 5. Finally, use the following formula to calculate seed rate πππππ‘πππ π ππ‘π = ππππππ‘ ππππ’πππ‘πππ ( πππππ‘π βπ ) ππππ πππ ππ π πΈπ π‘πππππ βππππ‘ % π πΊπππππππ‘πππ % For example if the target plant population is 800,000 , the germination % is 0.9 and expected field establishment % is 0.75. In addition we assume that if the size of wheat seed is average so in 1 kg there will be 27500 seeds. Thus the result will be calculated as follow: πππππ‘πππ π ππ‘π = 800,000 27500 π 0.75 π 0.9 = 43 ( ππ βπ ) We can also calculate the seed rate through the following formulas: Seeds/ha = Target plant population (plants/ha) Γ· Germination % Γ· Expected field establishment % Planting Rate (kg/ha)= Seeds/ha Γ· Seeds/kg For example Seeds/ha = 800,000 Γ· 0.9 Γ· 0.75 = 1185185 Planting rate = 1185185 Γ· 27 500 = 43 kg/ha