Best Fertilization Program for Potatoes

By Dr. Samir El-Zohiri
Categories: ,

Potatoes

Here is the schedule for fertilizing the potato crop, which is spread out across the days of the week from Saturday to Friday under the drip irrigation system, beginning with the preparation of the ground for planting and ending with harvest, knowing that the area of ​​a feddan is 4200 meters

First, before planting

Some fertilizers are added to the land before planting. They are as follows:

  • organic fertilizer (20 cubic meters/feddan), ammonium sulfate (100 kg/feddan), superphosphate (400 kg/feddan), magnesium sulfate (25 kg/feddan), sulfate potassium (50 kg), agricultural sulfur (100 kg/feddan), then the land is plowed well to ensure that the fertilizers mix with the soil.


Second, fertilize after planting.

The process of fertilizing acres of potatoes after planting begins from the age of 10 to the end of the crop, as follows:

1-From the age of 10 to 20 days 

  • Saturday (1 kg/feddan of humic acid). 
  • Sunday (plain water or without irrigation). 
  • Monday (plain water or without irrigation). 
  • Tuesday (10 kg urea, 2 kg phosphoric acid). 
  • Wed. (plain water). 
  • Thursday (10 kg of urea/acre).


2-From the age of 21 to 30 days

  • Saturday (5 kg/feddan fertilizer 19-19-19).
  • Sunday (plain water or without irrigation). 
  • both (5 kg of calcium nitrate and 2 liters of nitric acid). 
  • Tuesday (plain water or without irrigation). 
  • Wednesday (15 kg urea, 4 kg phosphoric acid). 
  • Thursday: plain water or no irrigation. 
  • Friday (plain water or without irrigation).


3-From 31 to 37 days old 

  • Saturday (5 kg of fertilizer per acre 19-19).
  • Sunday (plain water or without irrigation). 
  • both (5 kg of calcium nitrate and 2 liters of nitric acid/f). 
  • Tuesday (plain water or without irrigation). 
  • Wednesday (15 kg urea, 5 kg phosphoric acid). 
  • Thursday (5 kg of magnesium sulfate). 
  • Friday (plain water).


4-From the age of 38 to 44 days 

  • Saturday (20 kg of ammonia nitrate, 5 kg of phosphoric acid / feddan).
  • Sunday (plain water or without irrigation). 
  • both (5 kg of calcium nitrate and 2 kilograms of nitric acid). 
  • Tuesday (plain water or without irrigation).
  • Wed (plain water or without irrigation).
  • Thursday (1 kg/f humic acid).
  • With spraying of minor elements (iron - zinc - manganese).
  • Friday (plain water or without irrigation).


5- From 45 to 51 days old

  • Saturday: (20 kg of ammonia nitrate and 5 kilograms of phosphoric per acre).
  • Sunday (plain water or without irrigation).
  • Both (5 kg of calcium nitrate and 2 liters of nitric acid/acre).
  • Tuesday (plain water or without irrigation).
  • Wed (plain water or without irrigation).
  • Thursday (5 magnesium sulfate).
  • Friday (plain water).


6-From 52 to 58 days old 

  • Saturday (20 kg of nitrate ammonia, 5 kg of phosphoric acid). 
  • Sunday (plain water or without irrigation). 
  • both (5 kg of calcium nitrate and 2 liters of nitric acid/acre). 
  • Tuesday (plain water or without irrigation). 
  • Wed (5 kg potassium sulfate soluble).
  • Thursday (1 kg of humic/acre). 
  • spraying of minor elements (iron, zinc, manganese). 
  • Friday (plain water)


7-From the age of 59 to 65 days 

  • Saturday (20 kg of nitrate ammonia, 5 kg of mAb, or phosphoric acid). 
  • Sunday (plain water or without irrigation). 
  • Both (calcium nitrate and 2 liters of nitric acid).
  • Tuesday (plain water). 
  • Wed (5 kg soluble potassium sulfate).
  • Thursday (5 kg of magnesium sulfate). 
  • Friday (plain water). 

8-From 66 to 72 days old

  • Saturday (20 kg of ammonium nitrate, 5 kg of phosphoric acid). 
  • Sunday (plain water). 
  • both (5 kg of calcium nitrate and 2 liters of nitric acid). 
  • Tuesday (5 kg of soluble potassium sulfate). 
  • Wed (plain water). 
  • Thursday (5 kg of potassium nitrate). 
  • Friday (plain water).

9-From the age of 73 to 79 days 
  • Saturday (20 kg of nitrate ammonia). 
  • Sunday (plain water or without irrigation). 
  • Monday (5 kg of calcium nitrate, 2 liters of nitric acid). 
  • Tuesday (plain water). 
  • Wed (10 kg of potassium nitrate). 
  • Thursday (plain water). 
  • Friday (without irrigation).

10-From the age of 80 to the period of 90 days 
  • Saturday (5 kg of ammonia nitrate, 5 kg of nitrate, or potassium sulfate). 
  • Sunday (plain water). 
  • both (5 kg of nitrate or potassium sulfate). 
  • Tuesday (plain water or without irrigation). 
  • Wednesday (potassium citrate spray at a rate of 2 kg / feddan).
  • Thursday (plain or without water). 
  • Friday (plain water or without irrigation).


After that, the fertilization process stops, and the process of filtering the throne begins. Two liters of potassium sulfate, potassium citrate, and one liter of boron are added, which is used to spray one acre.


This process is repeated weekly until a week before harvest, after which the plants are sprayed with contact herbicides to dry before harvest.

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