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

Chemical Fertilizers as a component of INM in Mango Introduction 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. 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 End Previous Next

Chemical Fertilizers as a component of INM in Mango Introduction 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. 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. End Previous Next

Chemical Fertilizers as a component of INM in Mango 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 End Previous Next

Chemical Fertilizers as a component of INM in Mango Sources of phosphorous Fertilizer P (%) Single super phosphate 16.0 Rock phosphate 18.0 Bone meal 20.0 End Previous Next

Chemical Fertilizers as a component of INM in Mango Source of potassium Fertilizer K (%) Potassium sulphate 52 Potassium chloride 60 Potassium Magnesium Sulphate 22 End Previous Next

Chemical Fertilizers as a component of INM in Mango Mix fertilizers used as NPK source Fertilizer N (%) P (%) K (%) DAP 18 46 - Potassium Nitrate 13 45 NPK (15:15:15) 15 NPK (10:26:26) 10 26 NPK (12:32:16) 12 32 16 End Previous Next

Chemical Fertilizers as a component of INM in Mango Sources of micronutrient Micronutrient Source Content (%) Copper Copper sulphate 35 Cu EDTA 13 Iron Ferrous sulphate 20 Basic slag Boron Borax 11 Boric acid 17 Manganese Manganese sulphate 24 Zinc Zinc sulphate 36 End Previous Next

Chemical Fertilizers as a component of INM in Mango Doses of Primary Nutrients recommended for Mango The doses applied in the subsequent years should be increased every year upto 10 years in the multiple of the first year’s dose Age of Mango plant (in years) Nutrient dose (g) N P K 1 100 50 10 1000 500 11 -do- End Previous Next

Chemical Fertilizers as a component of INM in Mango Doses of secondary nutrients recommended in Mango Borax is applied from 5th year at the rate of 125 g/tree and increased 25 g every year. Age of the plant (in years) Nutrient dose (g) Copper sulphate Zinc sulphate Borax 1 25 - 10 250 End Previous Next

Chemical Fertilizers as a component of INM in Mango Factor for calculating quantity of different fertilizers Fertilizers Factor Nitrogenous fertilizers Phosphatic fertilizers Urea 2.17 Single super phosphate 6.25 Calcium ammonium nitrate 3.85 Rock phosphate 5.56 Ammonium nitrate 2.94 Bone meal 5.00 Ammonium chloride 4.0 Potassic fertilizers Calcium nitrate 6.45 Potassium sulphate 1.92 Ammonium sulphate 4.84 Potassium chloride 1.66 Potassium magnesium sulphate 4.55 End Previous Next

Chemical Fertilizers as a component of INM in Mango Factor for calculating quantity of different fertilizers May be given a small numerical example of calculating doses of chemical fertilizers by using these factors (if possible……………) End Previous Next

Chemical Fertilizers as a component of INM in Mango Time of application 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. End Previous Next

Chemical Fertilizers as a component of INM in Mango Fertilizer application method 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 End Previous Next

Chemical Fertilizers as a component of INM 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 End Previous Next

Chemical Fertilizers as a component of INM in Mango 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. End Previous Next