A study was conducted with graded levels of potassium and sulphur on pigeon pea to assess the nutrient uptake, yield and quality at Agronomy Farm, College of Agriculture, Nagpur (M.S.) The data revealed that application of K and S levels significantly influenced the uptake of major and micronutrient in pigeon pea. High N and P uptake was observed due to application of 30 kg potassium and 20 kg sulphur per hectare. Potassium uptake was increased significantly with increasing the levels of K. The highest K uptake was noticed in 45 kg K and 20 kg S per hectare combination. The recovery of NPK was higher in 30 kg potassium per hectare. Due to increased level of potassium and sulpur there was no adverse effect on calcium assimilation and highest uptake of calcium was observed in the application 30 kg K and 20 kg S per hectare. The optimum supply of K and S improves the uptake of micronutrients. Significantly high grain yield and protein yield was observed due to application 30 kg K and 20 kg S per hectare. Therefore balanced fertilization of NPKS nutrients is required in pigeon pea.

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The present investigation in relation to "Effect of integrated plant nutrient system on phosphorus solubilisation and productivity of wheat in Vertisols" was conducted during rabi season of 2019-20 at Botany Research Farm, College of Agriculture, Nagpur. The results revealed that the use of ghanjivamrut @ 5 t ha -1 at incorporation of green manuring in combination with 50 % RD of chemical fertilizers + biofertilizers is the suitable nutrient source for maintaining soil available phosphorus nutrient at physiological growth stage and fertility status and it also improve the uptake of nutrient and yield of wheat. The grain yield of wheat was 3.63, 4.52 and 14.40 per cent higher over 100 % RDF + GM with the IPNS practice, there by 50 % chemical fertilizers can be saved and increase solubility.

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Kharif and Rabi season of 2010-11 and 2011-12, to study the system productivity and profitability of sweet corn-chickpea cropping system as influenced by land configuration, plant population and integrated nitrogen management. Sweet corn yields were significantly higher in ridges and furrow with plant population of 55556 plants ha-1 and 100% N through inorganic fertilizer. However, sowing of sweet corn on ridges and furrow with plant population of 55556 plants ha-1 (60 x 30 cm 2) along with substitution of 50 per cent N through organic manure (vermicompost) to sweet corn crop exhibited remarkable residual effect on yield and GMR, NMR, B:C ratio of chickpea. This indicates benefits of vermicompost on subsidizing season chickpea than prevailing sweet corn. The system equivalent yield, GMR, NMR, B:C ratio of sweet corn-chickpea cropping sequence was maximum with sowing of sweet corn on ridges and furrow with plant population of 55556 plants per hectare (60 x 30 cm 2) along with application of 100 per cent N through inorganic fertilizers to sweet corn. System production efficiency and economic efficiency were also higher with these treatments.