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Singh S.,Rbs College Bichpuri | Singh S.,Dr Bhim Rao Ambedkar University | Singh H.,Zonal Agriculture Research Station | Singh H.,Dr Bhim Rao Ambedkar University | And 5 more authors.
Indian Journal of Agronomy | Year: 2014

A field experiment was conducted at Gamari, Agra, Uttar Pradesh during the winter (rabi) season of 2009–10 and 2010–11 on phosphate-deficient soil, to study the combined effect of rockphosphate (RP) with molybdenum and phosphate-solubilizing bacteria (PSB) on yield and quality of lentil (Lens culinaris Medik.) and soil fertility. Application of 60 kg P2O5 + 2 kg Mo/ha + Pseudomonas striata recorded significantly taller plants (49 cm), highest branches/plant (10.4), pods/plant (103.5) and test weight (28.5 g). The lentil crop responded significantly up to 60 kg P2O5/ha as rockphosphate and increased the grain and straw yields by 17.2 and 19.8% respectively. Application of 2 kg Mo/ha proved superior to the control with respect to grain and straw yields. Pseudomonas striata inoculation along with 2 kg Mo/ha or 60 kg P2O5/ha as rockphosphate improved the yield of lentil significantly over the control. The maximum grain (1.75 t/ha) and straw (3.9 t/ha) yields, and protein content were recorded with conjunctive use of 60 kg P2O5/ha as rockphosphate + 2 kg Mo/ha + Pseudomonas striata inoculation. The utilization of nutrients by lentil and status of available N (166 kg/ha), P (13 kg/ha) and Mo (0.074 mg/kg) improved significantly owing to P source + Mo + inoculation with Pseudomonas striata over the control. Maximum net returns (63,150/ ha) and benefit: cost ratio (4.30) were obtained with 60 kg P2O5 + 2 kg Mo/ha + P. striata and 30 kg P2O5 + 2 kg Mo + P. striata inoculation respectively. The P-use efficiency decreased and apparent P recovery increased with increasing dose of phosphorus. © 2014, Indian Society of Agronomy. All rights reserved. Source


Singh V.,Dr Bhim Rao Ambedkar University | Ali J.,Dr Bhim Rao Ambedkar University | Seema,Dr Bhim Rao Ambedkar University | Kumar A.,Dr Bhim Rao Ambedkar University | And 3 more authors.
Indian Journal of Agronomy | Year: 2015

A field experiment was conducted during the winter (rabi) seasons of 2010–11 and 2011–12 at Bichpuri, Agra, Uttar Pradesh on sandy-loam soil, to assess the effect of potassium and zinc nutrition on wheat [Triticum aestivum (L.) emend. Fiori & Paol]. Treatments comprising 4 levels each of K (0, 30, 60 and 90 kg K2O/ha) and Zn (0, 3, 6 and 9 kg/ha) were evaluated in randomized complete-block design with 3 replications. Growth and yield parameters of wheat increased significantly with the increasing levels of K up to 60 kg K2O/ha which were statistically at par with 90 kg K2O/ha. The mean grain (5.31 t/ha) and straw yields (9.80 t/ha) with 60 kg K2O/ha were 15.4 and 13.7% higher than the control, respectively. Application of 60 kg K2O/ha resulted in significantly highest net returns (48.1 × 103/ha) and benefit: cost ratio (1.90). Increasing zinc levels up to 6 kg Zn/ha showed significant improvement in plant height, effective tillers, grains/spike and 1,000-grain weight over the control. Similarly, application of 6 kg Zn /ha resulted in 8.8% higher grain yield (5.22 t/ha) than the yield obtained in the control (4.80 t/ha). Significantly highest net returns (₹ 47.8 × 103/ha) and benefit: cost ratios (1.95) were recorded at 6 kg Zn/ha. Uptake of N, P, K, S and Zn in wheat crop increased significantly with increasing levels of potassium. Protein content and yield in wheat grain increased significantly with the addition of K2O up to 90 kg/ha and Zn up to 9 kg/ha. The nutrient uptake (N, K and Zn) in wheat, except those of P and S, increased significantly up to 6 kg Zn/ha. The efficiency indices decreased at higher doses of K and Zn and the maximum values were recorded at 60 kg K2O/ha and 6 kg Zn/ha. © 2015, Indian Society of Agronomy. All rights reserved. Source


Verma R.K.,Rbs College Bichpuri | Yadav D.V.,Rbs College Bichpuri | Singh C.P.,Rbs College Bichpuri | Suman A.,Rbs College Bichpuri | Gaur A.,Rbs College Bichpuri
Plant, Soil and Environment | Year: 2010

An experiment was conducted to study the effect of heavy metals (Cd, Cr and Pb), soil texture (sandy, loam and clay) and incubation periods (7, 15, 30, 60, 90 and 120 days) on soil respiration (CO2 evolution) during sugarcane trash decomposition in laboratory conditions of the Indian Institute of Sugarcane Research, Lucknow, India. Surface soils (0-15 cm) were collected from agricultural fields and crop residue of sugarcane trash (Saccharum officinarum L.) was taken in the institute farm. Crop residue (10 t/ha) and heavy metals (10, 50,100,1000 ug/g) were mixed and incubated at 30°C ± 2°C in an incubator. The rate of soil respiration (CO2 evolution) decreased with increasing heavy metals concentration. During the 120 days, the toxicity decreased but still remained significant. Maximum soil respiration was recorded at 7 days of incubation period; further, it decreased with increasing incubation period. The highest drop of soil respiration rate was caused by addition of 1000 ug/g Cd, Cr and Pb levels. Clay soils evolved maximum CO2 followed by loam and sandy soil. Source

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