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47 results on '"Aggarwal, Pramila"'

7. Modelling soil water balance and root water uptake in cotton grown under different soil conservation practices in the Indo-Gangetic Plain

Author

Aggarwal, Pramila, Bhattacharyya, Ranjan, Mishra, Amit Kumar, Das, TK, Šimůnek, J, Pramanik, P, Sudhishri, S, Vashisth, A, Krishnan, P, Chakraborty, D, and Kamble, KH

Subjects
Zero Hunger, Clean Water and Sanitation, Permanent broad and narrow beds, Leaf Area Index, Soil hydraulic properties, Potential transpiration rates, HYDRUS-2D, Environmental Sciences, Agricultural and Veterinary Sciences, Studies in Human Society, Agronomy & Agriculture
Abstract

Although soil conservation practices are being promoted as better environmental protection technologies than traditional farmers’ practice, limited information is available on how these practices affect soil water balance and root water uptake. The root water uptake (RWU) patterns of cotton grown under soil conservation practices and soil water balance in cotton (Gossypium hirsutum L.) fieldsunder a cotton-wheat (Triticum aestivum L.) cropping system were analyzed using the Hydrus-2D model. The treatments were: conventional tillage (CT), zero tillage (ZT), permanent narrow beds (PNB), permanent broad beds (PBB), ZT with residue (ZT+R), PNB with residue (PNB+R) and PBB with residue (PBB+R). Results in the third year of the cotton crop indicated that the surface (0–15cm layer) field saturated hydraulic conductivity in both PNB and PBB plots were similar and were significantly higher than in the ZT plots. Computed potential transpiration rates (Trp) under CT were lower than in other treatments, due to less radiation interception and lower Leaf Area Index (LAI). Both PNB and PBB plots had higher Trp and crop yields than CT plots, which were further improved by residue retention. Predicted soil water content (SWC) patterns during the simulation periods of third and fourth years showed strong correlation (R2=0.88, n=105, P

Published
2017

30. A teacher's tale

Author

Aggarwal, Pramila

Subjects
Teaching -- Personal narratives, Teaching -- Psychological aspects, Reward (Psychology), Teacher-student relationships, Business, Business, international, Human resources and labor relations
Published
2004

31. Modelling soil water balance and root water uptake in cotton grown under different soil conservation practices in the Indo-Gangetic Plain

Author

Aggarwal, Pramila, primary, Bhattacharyya, Ranjan, additional, Mishra, Amit Kumar, additional, Das, T.K., additional, Šimůnek, J., additional, Pramanik, P., additional, Sudhishri, S., additional, Vashisth, A., additional, Krishnan, P., additional, Chakraborty, D., additional, and Kamble, K.H., additional

Published
2017
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32. Economic evaluation of conservation tillage options for deciding the feasibility of their adoption

Author

Kumar, Rakesh, Aggarwal, Pramila, Kumar, Amarendra, Kumar, Rakesh, Aggarwal, Pramila, and Kumar, Amarendra

Abstract

The present experiment was conducted to evaluate two important conservation tillage practices namely zero tillage in wheat and bed planting for growing vegetables for deciding the economic feasibility of their adoption in Gohana and Kharkhoda block of Sonipat district in Haryana. In first scenario, comparison were made between Puddled transplanted rice followed by conventional tilled wheat (PTR – CTW), and puddled transplanted rice followed by zero till wheat (PTR – ZTW). In second scenario, conventionally tilled Jowar in kharif followed by conventionally tilled wheat system (CTJ – CTW) was compared with vegetables on beds in both seasons (BV-BV). Sowing of wheat by zero till drill in PTR – ZTW system, decreased cost of cultivation by 21% over its value of Rs 20688 in PTR – CTW treatment; increased grain yield by 5% over the grain yield of 5.99 t ha-1 in PTR – CTW treatment. The B: C ratio of PTR – ZTW was 4.65 while that of PTR – CTW treatment was 3.24, which indicated economic viability of zero tillage practice. While in case of cauliflower in BV-BV system, the total cost of cultivation was estimated at Rs 51500/ha and net returns of Rs 38072/ha i.e an increased net return of 5.8 times over the net return of Rs 46223.5 in CTJ – CTW treatment. The B: C ratio of BV-BV was 5.21, while that of CTJ – CTW treatment was 2.35. Thus, it was concluded that in rabi season, cauliflower on beds and zero till wheat are most economically viable options in this temporary waterlogged regions of Yamuna basin.

Published
2016

36. Assessment of soil physical health and productivity of Kharkhoda and Gohana blocks of Sonipat district (Haryana), India

Author

Kumar, Rakesh, Aggarwal, Pramila, Singh, Ravendra, Chakraborty, Debashis, Bhattacharya, Ranjan, Garg, R. N., Kamble, Kalpana H., Yadav, Brijesh, Kumar, Rakesh, Aggarwal, Pramila, Singh, Ravendra, Chakraborty, Debashis, Bhattacharya, Ranjan, Garg, R. N., Kamble, Kalpana H., and Yadav, Brijesh

Abstract

In order to assess soil health of Kharkhoda and Gohana blocks of Sonipat district (a part of western Yamuna canal irrigated region), important parameters namely pH, electrical conductivity (EC), texture, bulk density (BD), saturated hydraulic conductivity (HC), soil organic carbon (OC), available water retension capacity (AWRC) and non capillary pores (NCP) were measured by collecting undisturbed soil samples in nearly 66 villages. Soil physical rating index (PI) method was used to compute PI which was an indicator of soil physical health of thatregion. Results revealed that in Gohana and Kharkhoda blocks, nearly 90% area had pH <8.0 and EC>4 dS m-1, which indicated that soils were saline. Prediction maps of soil BD showed that 75% of the total area in 15-30 cm soil layer had BD above >1.6 mg m-3, which indicated the presence of hard pan in subsurface. HC data of subsurface layer also showed that 60% of the area had values<0.5 cm hr-1 which reconfirmed the presence of hard pan. For both surface as well as subsurface soil layers, mostly AWC was >10% which indicated adequate water retention capacity of these soils. However 85% of subsurface had poor soil aeration capacity as indicated NCP range < 10 %. Prediction map of PI for subsurface layer showed that majority of area had PI<0.4 which indicated that expected yield of the crop cannot be more than 70% of the potential yield even under normal or higher levels of fertilizer and water inputs.

Published
2014

41. Conservation agriculture in an irrigated cotton–wheat system of the western Indo-Gangetic Plains: Crop and water productivity and economic profitability

Author

Das, T.K., primary, Bhattacharyya, Ranjan, additional, Sudhishri, S., additional, Sharma, A.R., additional, Saharawat, Y.S., additional, Bandyopadhyay, K.K., additional, Sepat, Seema, additional, Bana, R.S., additional, Aggarwal, Pramila, additional, Sharma, R.K., additional, Bhatia, A., additional, Singh, Geeta, additional, Datta, S.P., additional, Kar, A., additional, Singh, Billu, additional, Singh, Parmendra, additional, Pathak, H., additional, Vyas, A.K., additional, and Jat, M.L., additional

Published
2014
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46. Desperately seeking democracy.

Author

Aggarwal, Pramila

Subjects
*DEMOCRACY, *SOCIAL conditions of women
Abstract

Relates a woman's experience with democracy's failure to enhance the everyday lives of women particularly in India. Evidence that democracy for women cannot coexist with patriarchy; Experiences in the search for true democracy; Discrimination against women in the workplace; Refusal of women to abort the search for true equality and democracy.

Published
2000

47. Pre-sowing static magnetic field treatment for improving water and radiation use efficiency in chickpea (Cicer arietinum L.) under soil moisture stress.

Author

Mridha N, Chattaraj S, Chakraborty D, Anand A, Aggarwal P, and Nagarajan S

Subjects
Cicer metabolism, Cicer radiation effects, Plant Leaves drug effects, Plant Leaves metabolism, Plant Leaves radiation effects, Seeds drug effects, Seeds metabolism, Seeds radiation effects, Water pharmacology, Cicer growth & development, Cicer physiology, Magnetic Fields, Soil chemistry, Stress, Physiological drug effects, Stress, Physiological radiation effects, Water metabolism
Abstract

Soil moisture stress during pod filling is a major constraint in production of chickpea (Cicer arietinum L.), a fundamentally dry land crop. We investigated effect of pre-sowing seed priming with static magnetic field (SMF) on alleviation of stress through improvement in radiation and water use efficiencies. Experiments were conducted under greenhouse and open field conditions with desi and kabuli genotypes. Seeds exposed to SMF (strength: 100 mT, exposure: 1 h) led to increase in root volume and surface area by 70% and 65%, respectively. This enabled the crop to utilize 60% higher moisture during the active growth period (78-118 days after sowing), when soil moisture became limiting. Both genotypes from treated seeds had better water utilization, biomass, and radiation use efficiencies (17%, 40%, and 26% over control). Seed pre-treatment with SMF could, therefore, be a viable option for chickpea to alleviate soil moisture stress in arid and semi-arid regions, helping in augmenting its production. It could be a viable option to improve growth and yield of chickpea under deficit soil moisture condition, as the selection and breeding program takes a decade before a tolerant variety is released. Bioelectromagnetics. 37:400-408, 2016. © 2016 Wiley Periodicals, Inc., (© 2016 Wiley Periodicals, Inc.)

Published
2016
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