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Fertigation Schedule

Fertigation schedule for major fruit crops of the region during economical growing period

Crop Spacing FYM Recommended Fertilizers (RDF) (g NPK / plant/year) Drip irrigation schedule Fertigation with water soluble fertilizers* Biofertilizers /others Additional care
Mango 10 m x 10 m & 5 m x 5 m 25 t/ha To meet 60% ER (110-230 litres/plant /day during February to May) 75% RDF in the ratio 2-1-0 (July- August), 2-2-2 (September- November), 0-1-1 (December-January) and 0-0-2 (February-April). 300g Biofertilizer consortia Mango special @ 4g/litre of water- four times
Banana 1.8 m x 1.8 m 25 t/ha To meet 80% ER (20-25 litres/day during summer and 50% less during other months) Fertigation with 75% of RDF - Nitrogen and potash are to be applied in equal split doses while that of phosphorus can be applied at the time of planting. Consortium of biofertilizers (100 g each of Azotobacter tropicalis, Bacillus aryabhatti and Pseudomonas taiwanensis) For correcting the micro nutrient deficiencies Banana special, a micro nutrient formulation developed by IIHR consist mainly of six micro nutrients viz., zinc, iron, boron, copper, manganese and molybdenum and three secondary nutrients viz., calcium, magnesium and sulphur is recommended as a foliar spray from 4/5th month of planting at monthly interval on the whole plant till the bunch formation and there after two sprays on the bunches. Spray solution is prepared by dissolving 75 g of banana special in 15 litres of water (about 12 kg/acre). Nutrient feeding through the distal end of the bunch peduncle after the removal of tassel with fresh cow dung slurry and 5-7g urea dissolved in it; is filled in a polythene bag (usually half litre milk sachet) and tied to the bunch end immediately after denavelling.
Sapota 8 m x 8 m 40 kg/ plant 40 to 50 litres of water per day during summer months and 50% less during other seasons 60% RDF in the ratio 2-1-0 (July- August) 2-2-2 (Sept- November), 0-1-1 (Dec-January) and 0-0-2 (February-April). 300g Biofertilizer consortia 5-10 kg neem cake need to be applied per plant per year. Foliar spray of micronutrients will enhance the growth and productivity.
Papaya 1.8 m x 1.8 m 25 t/ha 40 kg/ plant AMC Enriched FYM @ 5 kg/plant at planting and repeated at 6 months interval @ 2 kg/plant To meet 60% ER 6 to 8 litres of water/plant /day by placing drippers midway between trunk and skirt line 100% recommended N and K through drip (50 g N @ 6.25 g/plant/week and 50 g K2O @6.25 g/plant/week for a two months period), in addition to soil application of 50 g P2O5 in bimonthly intervals. Drenching AMC @ 20ml/ litre at monthly interval Sub surface drip irrigation gives 10% higher yield over surface drip irrigation. Fertigation gives 9.3% higher yield over soil application of fertilizers
Grapes** 3 m x 2m (Seedless varieties) 50 kg /plant, 3 kg of bone meal, 2 kg of castor/ pongamia cake /neem cake and 2 kg of super phosphate To meet 80% ER (the yield decreases with decrease in ER with one emitter/plant or alternate irrigation) After April pruning NPK in the ratio of : 8-40 days : 1-2-0 41-75 days : 0-1-1 76-90 days : 0-0-1 After October pruning NPK in the ratio of : 8-35 days : 1-1-1, 36-75 days : 1-0-2 75-90 days : 0-0-2 91-120 days:0-0-1 (Adjust the nutrient needs based on petiole analysis) Avoid water with EC more than 2 dS/m and cl with more than 3 m eq/l in sandy soils and more than 4 m eq/l in heavy soils, RSC to be less than 2. Sandy soils : Salinity– upto 2.5 dS /m Sodium-15-20 m.eq/l
Guava 4 m x 4 m 20 kg/plant 8-10 irrigations, once in every 20 days in summer and every month in winter. Period during April-June is critical. 30 litres (December) to 90 litres (May)/plant /day 75-80% Recommended N & K through water soluble fertilizers and P through soil application at 15 days interval Actino plus 20 g/plant /week Foliar application of micronutrients along with 2 – 6% urea. Soil application of 800 g ZnSO4 / tree or foliar spray of 0.5 per cent ZnSO4 and 0.4 percent boric acid 10 to 14 days before every flowering. Humic acid can be applied through fertigation whenever FYM could not be applied @ 1 litre/irrigation/acre.