Potassium (K): 15-20 kg (If all straw remains in the field and is evenly distributed, K requirements can be reduced to 3-5 kg/ha per ton of grain yield. The sources for NPK were urea, superphosphate and murate of potash, respectively. Note: Remember these numbers are always on the basis of 100 kg (in %). You may encounter these letters when reading the contents printed on bags of fertilizer.The description of the fertilizer may not expressly say "NPK," but you will at … In India, rice is cultivated in an area of 42.2 million ha with a production of 110.9 million tons of rice, while China produces 187.45 million tons of rice in 33.1 million ha. I.) Solution: Fertilizer requirement will be, • Urea =120×2.17= 260.4 kg/ha • SSP= 60×6.25= 375 kg/ha • MOP= 40×1.67= 66.67 kg/ha 4. Sulphur can be as important as the other three nutrients. When salinity level exceeds the salt tolerance of the crop, yield is affected and begins to decrease. 1 Fertiliser Calculations Carol Rose, Extension Agronomist, NSW Department of Primary Industries Kempsey DPI 496 August, 2004 The following simple calculations will allow you to Hence field experiments were carried out during the cropping seasons of 2015 and 2016 to compare the impact of different green manures and NPK 15-15-15 fertilizer on soil properties, growth, yield, mineral and vitamin C composition of okra (Abelmoschus esculentus (L.) Moench). Apply NPK fertilizers as per soil test recommendation as far as possible. N, P and K are the most needed nutrients in rice. Apply half of N and full dose of P2O and K2O with enriched FYM as basal. Nitrogen deficiency is the most common nutrient problem. Apply the mixture over the furrows and two thirds in the top of ridges, if ridge planting is followed. General nutrient management for N, P and K. What are the most common nutrient deficiencies and why? The nutritional effects of green manure on soil and crop plants depends on residue quality. Total NPK (N, P 2 O 5 and K 2 O) consumption increased nine-fold (from 2 million to 18 million tonnes) between 1969/1970 and 1999/2000. After reaching a record level in 1999/2000, fertilizer consumption in India has been irregular. Stable supplier of compound and organic fertilizer with competitive price list. At optimum plant nutrition, the rice crop (straw plus in grain) takes up around 19 kg K 2 O (16 kg K) per ton of grain yield (2.2 kg K 2 O in grain and 16.8 kg K 2 O in straw). Thus a mature plant of about 10 years will receive 1.5 kg N, 0.5 kg P 2 O 5 and 0.5 kg K 2 O, mixed well with about 50 kg well decomposed FYM. Zinc and sometimes sulfur deficiencies are much less frequent but can be important locally. So, how much fertilizer do you need to apply? Spread 12.5 t/ha of FYM or compost or composted coir pith evenly on the unploughed field along with 10 packets of Azospirillum (2000 g/ha) + 10 packets of Phosphobacteria (2000 g/ha) or Azophos at 4 kg/ha and incorporate in the soil. Nitrogen accumulates first in the leaves (vegetative phase) then migrates to the panicles and grains (maturity). Q7: What is fertilizer dose to be applied in Direct Dry rice cultivation system? The five rates of potassium fertilizer were 0, 60, 90, 120, and 150 kg K 2 Potassium can quickly become yield limiting in high yielding rice systems where most of the straw is removed because rice straw is rich in K! The effect The results of long-term fertilizer experiments con-ducted with rice-based cropping system at several stations confirm the inadequate na-ture of so-called ‘optimum’ fertilizer recom-mendations (Table 3). 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