~ 2763 ~ Journal of Pharmacognosy and Phytochemistry 2019; 8(1): 2763-2765 E-ISSN: 2278-4136 P-ISSN: 2349-8234 JPP 2019; 8(1): 2763-2765 Received: 26-11-2018 Accepted: 28-12-2018 Nirmal Kumar Department of Environmental Science, School of Forestry and Environment, Sam Higginbottom Institute of Agricultural, Technology & Sciences (Formerly Allahabad Agricultural Institute), Allahabad, Uttar Pradesh, India Satyendra Nath Department of Environmental Science, School of Forestry and Environment, Sam Higginbottom Institute of Agricultural, Technology & Sciences (Formerly Allahabad Agricultural Institute), Allahabad, Uttar Pradesh, India Rajveer SMS (Soil Science), Swami Keshwanand Rajasthan Agricultural University, Bikaner, Rajasthan, India Pardeep Kumar Department of Environmental Science, School of Forestry and Environment, Sam Higginbottom Institute of Agricultural, Technology & Sciences (Formerly Allahabad Agricultural Institute), Allahabad, Uttar Pradesh, India Vinod Kumar Dept. of Agronomy, Mahatma Jyoti Rao Phoole University, Jaipur, Rajasthan, India Mahendra Parsoya Dept. of Agronomy, Mahatma Jyoti Rao Phoole University, Jaipur, Rajasthan, India Correspondence Nirmal Kumar Department of Environmental Science, School of Forestry and Environment, Sam Higginbottom Institute of Agricultural, Technology & Sciences (Formerly Allahabad Agricultural Institute), Allahabad, Uttar Pradesh, India Effect of different levels of phosphorus on yield of green gram ( Vigna radiata L.) under climatic condition of Allahabad Nirmal Kumar, Satyendra Nath, Rajveer, Pardeep Kumar, Vinod Kumar and Mahendra Parsoya Abstract A field experiment was conducted during the Kharif season 2015 at the Crop Research Farm, Department of Environmental Science, SHIATS, Allahabad (U.P.) to concluded the experiment on the title effect of different levels of phosphorus on yield of green gram (Vigna radiata L.) under climatic condition of Allahabad in factorial Randomized Block Design with nine treatment combinations and replicated thrice. The results revealed that highest plant height (75.81 cm), number of branches (4.00), number of nodules (65.27). Yield and yield attributes viz., number of pods plant -1 (31.53),Test weight (44g), seed yield (1497 kg ha -1 ), stover yield (2920 kg ha -1 ), harvest index (42.45%) were highest recorded in treatment T3 (75 kg phosphorus ha -1 ). Treatment combination T7 (25 kg phosphorus ha -1 ) require more GDD to reach flowering (959.00) and maturity (1540.70). Keywords: Phosphorus, green gram, GDD, Vigna radiata L. Introduction Pulses are the main source of protein particularly for vegetarians and contribute about 14 per cent of the total protein of average Indian diet. Production of pulses in the country is far below the requirement to meet even the minimum level per capita consumption. The per capita availability in pulses dwindling fast from 35.0 g/capita per day in 2005 as against the minimum requirement of 84 g per day per capita prescribed by ICMR, which is causing malnutrition among the growing people (Anonymous, 2005-06) [1] . Pulse production is very low and become challenging problem against the requirement of increasing population of our country. Green gram locally called as moong or Mung [Vigna radiata (L.) Wilczek]. As it belongs to the family leguminoseae so it has the capacity to fix atmospheric nitrogen. It’s one of the important kharif pulse crops of India which can be grown as catch crop between Rabi and kharif -seasons. India alone accounts for 65% of its world acreage and 54% of the total production. It is grown on about 3.50 MHA in the country mainly in Rajasthan, Maharashtra, Andhra Pradesh, Karnataka, Orissa and Bihar. A phenomenal increase in area, production and productivity has occurred since 1964-65. The area has increased from 1.99 million ha in 1964- 65 to 3.54 million ha in 2010-2011. The production has increased from 0.60 million tonnes to 1.81 million tonnes during the same period. Throughout the India, the mungbean is used for different purposes. The major portion is utilized in making dal, soup, sweets and snacks (Anonymous, 2012) [2] . In India, production of pulses is around 13.5-15 million tonnes during the last decade, while annual domestic demand is 18-19 million tonnes. The yield of pulses has remained virtually stagnant for the last 40 year (539 kg/ha in 1961 to 544 kg/ha in 2001 to 696 kg/ha in 2013-14). India is short of supply by 2 to 3 million tonnes annually (FAOSTAT, 2013-14) [6] . Phosphorus: Phosphorus is the second most important nutrient that must be added to the soil to maintain plant growth and sustain crop yield. Phosphorus plays a vital role in photosynthesis, respiration, energy storage, cell elongation and improves the quality of crops. Deficient plants may have thin, erect and spindly stems and leaves turn into bluish-green colour. It stimulates early root development and growth and there by helps to establish seedlings quickly. It enhances the activity of Rhizobium and increased the formation of root nodules. Thus, it helps in fixing more of atmosphere nitrogen in root nodules. Sowing date: Various factors responsible for low yield of mungbean at the farmer’s field are: un-awareness of farmers about optimum date of sowing, improper planting patterns, insufficient plant protection measures and imbalanced use of fertilizers.