Chemical Fertilizers as a component of INM in Mango (Sources, Methods, Doses and time of application) EndPreviousNext

Chemical Fertilizers as a component of INM in Mango Chemical Fertilizers as a component of INM in Mango

(Sources, Methods, Doses and time of application) (Sources, Methods, Doses and time of application)

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Introduction

Chemical Fertilizers as a component of INM in Mango

For better nutrient use efficiency chemical fertilizers are frequently used by the farmers. In this RLO we will discuss sources, methods, doses and time of application of chemical fertilizers

Soil of India are generally poor in fertility and low in organic matter.

Among major nutrients, N deficiency is universal.

The soil health problem is expected to further aggravate with increasing target of food production to meet the food need of ever increasing population of the country.

Thus the important task for integrated nutrient management is the efficient management of the soil to keep it productive through continuous application of fertilizers and organic manures.

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Thus it is important to have an idea about source of nutrient, methods and time of application and placement of fertilizers for better nutrient use efficiency.


Chemical fertilizers have been the key elements in enhancing the fruit production in India.

Fertilizer is the macro-micro nutrients carrier which when applied judiciously to soil or foliage meets the nutrient need of the crop. From the point of view of environmental protection the word judicious is very relevant in the nutrient management.

For efficient fertilizer management, split application, appropriate timing, proper placement, etc need to be adopted.

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Introduction

Sources of nitrogen

Fertilizer N (%)

Urea 46.0

Calcium Ammonium Nitrate 26.0

Ammonium Nitrate 34.0

Ammonium chloride 25.0

Calcium Nitrate 15.5

Ammonium sulphate 20.6


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Sources of phosphorous

Fertilizer P (%)

Single super phosphate 16.0

Rock phosphate 18.0

Bone meal 20.0


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Source of potassium

Fertilizer K (%)

Potassium sulphate 52

Potassium chloride 60

Potassium Magnesium Sulphate 22


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Mix fertilizers used as NPK source

Fertilizer N (%) P (%) K (%)

DAP 18 46 -

Potassium Nitrate 13 - 45

NPK (15:15:15) 15 15 15

NPK (10:26:26) 10 26 26

NPK (12:32:16) 12 32 16


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Sources of micronutrient

Micronutrient Source Content (%)Copper Copper sulphate 35

Copper Cu EDTA 13

Iron Ferrous sulphate 20

Iron Basic slag 13

Boron Borax 11Boron Boric acid 17

Manganese Manganese sulphate 24

Zinc Zinc sulphate 36


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Doses of Primary Nutrients recommended for Mango

The doses applied in the subsequent years should be The doses applied in the subsequent years should be increased every year upto 10 years in the multiple of the first increased every year upto 10 years in the multiple of the first year’s doseyear’s dose

Age of Mango plant

(in years)

Nutrient dose (g)

N P K

1 100 50 100

10 1000 500 1000

11 -do- -do- -do-


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Doses of secondary nutrients recommended in Mango

Borax is applied from 5Borax is applied from 5thth year at the rate of 125 g/tree and year at the rate of 125 g/tree and increased 25 g every year.increased 25 g every year.

Age of the plant(in years)

Nutrient dose (g)

Copper sulphate Zinc sulphate Borax

1 25 25 -

10 250 250 250


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Fertilizers Factor Fertilizers Factor Nitrogenous fertilizers Phosphatic fertilizers Urea 2.17 Single super phosphate 6.25Calcium ammonium nitrate

3.85 Rock phosphate 5.56

Ammonium nitrate 2.94 Bone meal 5.00Ammonium chloride 4.0 Potassic fertilizers Calcium nitrate 6.45 Potassium sulphate 1.92Ammonium sulphate 4.84 Potassium chloride 1.66

Potassium magnesium sulphate

4.55

Factor for calculating quantity of different fertilizers


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May be given a small numerical example of May be given a small numerical example of calculating doses of chemical fertilizers by using calculating doses of chemical fertilizers by using these factors (if possible……………)these factors (if possible……………)

Factor for calculating quantity of different fertilizers


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Time of application


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Non-bearing plants can be supplied fertilizers in several split doses.

This helps in avoiding loss of nutrient through leaching since root system of young plants are not so elaborated.

Bearing trees, apply full quantity of nitrogenous fertilizers, half phosphorous and half potash just after harvesting of fruits in June/July.

The other half quantity of phosphorous and potash should be applied in October with last irrigation.

Foliar application of 3 % urea in sandy soils is recommended before flowering.

Fertilizer application method


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In addition to source of nutrients, time of application and doses, the method of fertilizer application is also important in nutrient management.

Fertilizers must be equally distributed on the root zone area from 30 cm tree trunk to drip line in mango trees.

Drip irrigation in Mango

Fertilizer application method

After broad casting, fertilizers should be incorporated thoroughly to the soil by cultivating the top soil.

Care should be taken not to damage the roots. Urea must only be applied when the soils are moist otherwise trees must be irrigated immediately after urea application. Click


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Let Us sum up


Timely correction of nutrients deficiency is utmost important for getting maximum yield without deteriorating plant health.

To meet the nutrients requirement of mango tree one can apply different fertilizers. Application of fertilizers at right time and judiciously is very important.

Amount of different fertilizers should be calculated based on nutrients available in those particular fertilizers. Timely application of fertilizers can boost the productivity of the mango.

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Chemical Fertilizers as a component of INM in Mango (Sources, Methods, Doses and time of application) EndPreviousNext