Aims: The present study was conducted to investigate the changes in soil fertility status with the application of zinc and biofertilizers in hybrid rice and chickpea. Study Design: The design taken for study was Randomized Block Design (RBD). Place and Duration of Study: Students Instructional Farm, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, Uttar Pradesh, between July 2018 – July – 2020. Methodology: The experiment included twelve treatment groups replicated three times in Randomized Block Design. Results: Soil parameters were also influenced with the application of zinc and biofertilizer. The available nitrogen varied between 192 to 223 kg ha-1 and 191 to 222 kg ha-1 at after harvest during first and second year in case of rice crop. The available phosphorus in case of rice was varied between 11.82 to 11.88 kg ha-1 at before harvest and 11.75 to 13.65 kg ha-1 at after harvest during first year. In case of available potassium it varied from 169 to 173 kg ha-1 at before harvest of the crop and 169 to 185 kg ha-1 at after harvest during first year. Similarly, significant increase in sulphur and zinc was also observed with application of zinc and biofertilizers. The available nitrogen, phosphorus potassium, sulphur and zinc were analysed numerically highest with the application T7 (100 per cent RDN + 25 per cent N FYM + S40 + ZnO + *Azotobacter or **Rhizobium) as compared to control at before and after harvest the crop during both the years that is 2018-19 and 2019-20. Similar trend was seen in case of chickpea crop. Conclusion: Therefore, the combination of micronutrients and biofertilizers, proved beneficial, indicating to use balanced fertilizers to get maximum benefit and maintaining soil health in rice-chickpea cropping system for the farmers of Central Uttar Pradesh conditions.
The present study was conducted to investigate the changes in yield attributes and protein content with the application of zinc and biofertilizers in hybrid rice and chickpea. The experiment was conducted in as a Randomized Block Design (RBD) in Students Instructional Farm, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, Uttar Pradesh, India, during 2018-2019 and 2019-2020. The experiment included twelve treatment groups replicated three times in Randomized Block Design. The results revealed that the treatment which received T7 (100 per cent RDN + 25 per cent N FYM + S40 + ZnO + *Azotobacter or **Rhizobium) recorded highest value of all yield attributes and protein content. The mean values of both years of plant height, number of tillers/hill, panicle length, no. of filled grains/panicle, no. of unfilled grains/panicle and total no. of grains/panicle increased up to 96.08 cm, 8.38, 24.29, 181.03, 18.71 and 199.74, respectively in treatment T7 in hybrid rice. Similarly, in case of chickpea the mean values of plant height, no. of branches/hill, no. of pods/plant, no. of seeds/plant, no. of nodules/plant and dry weight of nodules/plant also increased up to 62.60 cm, 5.22, 62.62, 1.88, 17.63 and 2.08, respectively. The protein content was also found to be maximum in Treatment T7 in rice (7.94 and 8.04%) and in chickpea (23.25 and 23.27%) during the years, respectively. Therefore, combination of micronutrients and biofertilizers, as remunerative and beneficial for growth, improved the yield and ultimately productivity of both hybrid rice and chickpea in areas with deficient available micronutrients in soil.
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