Effect of Added Phosphorous and Organic Matter on the Availability of Phosphorous Fractions in Normal Soil under Field Capacity Moisture Tension

An Incubation study was conducted from January 2020 – May 2020 under "Laboratory conditions" at the Department of Soil Science and Agricultural Chemistry, Chandra Shekhar Azad Kanpur University of Agriculture and Technology, (U.P.) to study the “Effect of added phosphorous and organic matter on the availability of phosphorous fractions in normal soil under field capacity moisture tension”. To obtain a different fraction of phosphorus under the field capacity regime all three experiments were conducted under kankar soil conditions to determine Ca-P, Al-P and Fe-P as influenced by six different treatments. The results showed that with advancement in time of incubation, the availability of Ca-P (308.2 ppm and 235.3 ppm at 0 days and 90 days of incubation period, respectively), Al-P (89.5 ppm and 44.9 ppm at 0 days and 90 days of incubation period, respectively), while Fe-P (13.8 ppm and 13.1 ppm at 0 days and 90 days of incubation period, respectively) increased marginally at field capacity in kankar soil condition. Sunhemp (T2) proved more beneficial than FYM (T3) in increasing Fe-P, Al-P, and Ca-P as also Olsen’s P content in the soil. Therefore, the application of organic matter either in the form of sun hemp with phosphorus proved very useful in improving the avoidable content of the soil.

Integrated Effect of Inorganic Fertilizers and Biofertilizers on Growth and Yield of Onion (Allium cepa L.)

The present investigation was carried out during winter of 2018-2019 at the Horticulture Farm of Post Graduate College, Ghazipur. The experiment was laid out in Randomized Block Design with three replications. Ten treatment combinations viz. T1-Control (100% Recommended dose of NPK), T2-75% NPK + 25% Azotobactor, T3-50% NPK + 50% Azotobactor, T4-25% NPK + 75% Azotobactor, T5-75% NPK + 25% PSB, T6-50% NPK + 50% PSB, T7- 25% NPK + 75% PSB, T8-75% NPK + 25% Azotobactor + 25% PSB, T9-50% NPK + 50% Azotobactor + 50% PSB and T10-25% NPK + 75% Azotobactor + 75% PSB. It can be concluded that the maximum growth attributes, yield parameter and yield of onion may be obtained by the application of 75% NPK + 25% Azotobactor + 25%PSBtreatment (T8), while, the treatment T7, i.e. application of 25% NPK + 75% PSB was also found to be good for growth and yield parameter of onion. It was observed that the combination of inorganic fertilizers and bio-fertilizers influence the growth and yield attributes. . Therefore, from the present investigation, it can be concluded that the onion variety N-53 performed economically well by the application of 75% NPK + 25% Azotobacter+25% PSB as compared to rest treatment.