Implementing plant nutrition program

TECHNICAL EDUCATION AND SKILLS DEVELOPMENT AUTHORITY
BONDOC PENINSULA TECHNOLOGICAL INSTITUTE

Irrigation frequency is usually higher in sandy soils and, as a result, leaching of
nutrients is stronger. Therefore, splitting fertilizer application in sandy soils is
necessary.
Timing of nitrogen application
Nitrogen requires careful management, as it is very susceptible to being lost from soils.
Nitrogen can be lost from the soil through leaching, denitrification, erosion and surface
volatilization. Nitrogen is more readily leached in sandy soils than in fine texture soils. If not
properly applied, nitrogen loss can account for up to 50-60% of the applied amount.

For example, if nitrogen is applied too early, before the plant really needs it, a significant
portion of the nitrogen may be lost before the crop takes it up.

Therefore, the time nitrogen is in the soil before the plant takes it up should be minimized.
Splitting nitrogen application is one way to do that. Splitting the nitrogen application reduces
the risk of nitrogen loss and improves the efficiency of the application.

Timing of phosphorus application
Movement of phosphorus in the soils is very slow. Therefore, roots can uptake phosphorus
only from their very close surroundings.

When first added to soil with fertilizers, phosphorus is in its soluble and available form.
However, it quickly becomes unavailable for plants in a process called “Fixation”.

Since phosphorus applied remains at the top soil layer, main losses are through surface
runoff and soil erosion.

It is important to take the above factors into consideration when deciding on the timing of
phosphorus application and on the frequency of applications. For example, applying a high
rate of phosphorus, especially right before rain or heavy irrigation might cause loss of
phosphorus through runoff and erosion.

Apply your fertilizers at the right time and rate with SMART Fertilizer Management
Software

SMART Fertilizer Management Software is a platform for optimizing fertilizer use, enabling

E-Learning for AGRICULTURAL CROPS Date Developed: Version No. 1
PRODUCTION NC III May 2020
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Module Title: Developed by: 53
IMPLEMENTING PLANT NUTRITION ANDY R. RAFOL

PROGRAM

TECHNICAL EDUCATION AND SKILLS DEVELOPMENT AUTHORITY
BONDOC PENINSULA TECHNOLOGICAL INSTITUTE

farmers to maximize crop yields and increase profits. The software finds the ideal fertilizer
mixture and rates, based on field data, such as soil test results, plant tissue analysis and
crop nutrient needs.

 Recommends the ideal fertilizer mixture and rates, based on your field data
 Minimizes fertilizer costs
 Provides complete fertilization schedules
 Interprets soil, tissue and water analysis

Available for over 250 crops, including grains, cereals, vegetables, grasses, flowers, orchard
and more.
https://www.smart-fertilizer.com/articles/timing-fertilizer-application/

E-Learning for AGRICULTURAL CROPS Date Developed: Version No. 1
PRODUCTION NC III May 2020
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Module Title: Developed by: 53
IMPLEMENTING PLANT NUTRITION ANDY R. RAFOL

PROGRAM

TECHNICAL EDUCATION AND SKILLS DEVELOPMENT AUTHORITY
BONDOC PENINSULA TECHNOLOGICAL INSTITUTE

https://extension.psu.edu/managing-soil-health-concepts-and-practices
http://www.uvm.edu/~fruit/treefruit/tf_organicbasics/PracticalGuideOrganic/ManagingthePlantandSoilEcosystem-Darby.pdf
http://agritech.tnau.ac.in/agriculture/agri_soil_sampling.html
http://cceclinton.org/gardening/soils-climate/how-to-take-a-soil-sample
https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_053293.pdf
https://www.youtube.com/watch?v=lWUh1np7IcA
https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_053293.pdf
https://www.esf.edu/pubprog/brochure/soilph/soilph.htm
https://ipm.missouri.edu/IPCM/2016/7/Diagnosing_Nutrient_Deficiencies/
Fhttps://www.youtube.com/watch?v=sWlJjceYhCc
Fhttps://www.youtube.com/watch?v=sWlJjceYhCc
https://www.youtube.com/watch?v=9ahTrJivIZI&pbjreload=10
https://www.iaea.org/topics/improving-soil-fertility
https://extension.psu.edu/managing-soil-health-concepts-and-practices
https://www.esf.edu/pubprog/brochure/soilph/soilph.htm
https://www.youtube.com/watch?v=Epf1rjJyGeM
http://utbfc.utk.edu/Content%20Folders/Forages/Fertilization/Publications/PB1637.pdf
https://www..slideshare.net/CassavaWeed14/equipment-calibration-knapsack?from_action=save
https://aicrp.icar.gov.in/fim/salient-achievements/intercultural-and-fertilizer-application-equipments/
https://www.environment.co.za/environmental-issues/how-do-fertilizers-affect-the-environment.html
https://int.search.myway.com/search/Soil-Sampling-Complete-Procedures-8-8-17.pdf

E-Learning for AGRICULTURAL CROPS Date Developed: Version No. 1
PRODUCTION NC III May 2020
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Module Title: Developed by: 53
IMPLEMENTING PLANT NUTRITION ANDY R. RAFOL

PROGRAM