Refine your search
Collections
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, Sompal
- Impact of Projected Climate Change on Rice (Oryza sativa L.) Yield Using CERES-Rice Model in Different Agroclimatic Zones of India
Abstract Views :237 |
PDF Views:80
Authors
P. K. Singh
1,
K. K. Singh
1,
S. C. Bhan
1,
A. K. Baxla
1,
Sompal Singh
2,
L. S. Rathore
1,
Akhilesh Gupta
3
Affiliations
1 Agromet Service Cell, India Meteorological Department, Lodhi Road, New Delhi 110 003, IN
2 Department of Agriculture Meteorology, Punjab Agriculture University, Ludhiana 141 004, IN
3 Department of Science and Technology, New Delhi 110 016, IN
1 Agromet Service Cell, India Meteorological Department, Lodhi Road, New Delhi 110 003, IN
2 Department of Agriculture Meteorology, Punjab Agriculture University, Ludhiana 141 004, IN
3 Department of Science and Technology, New Delhi 110 016, IN
Source
Current Science, Vol 112, No 01 (2017), Pagination: 108-115Abstract
Climate change is projected to alter the growing conditions of rice crop in different regions of India. Crop growth simulation model (DSSATv4.6) was calibrated and evaluated with four rice cultivars: PR 118 in Amritsar, Ludhiana; HKR 126 in Hisar and Ambala; Pant 4 in Kanpur and Sugandha-1126 in Modipuram on different sowing dates. The average yield of the selected optimum dates was 6391, 6531, 7751, 7561, 4347 and 4131 kg/ha for Amritsar, Ludhiana, Hisar, Ambala, Modipuram and Kanpur respectively. Both temperature and CO2 have increased. The combined effect of temperature and CO2 indicates decreased yield rate in the future decades. The present study shows that rice yield will decrease in the future and this may be due to increase in temperature. According to projection results, for all the locations average yield is higher in the decade 2010, except Amritsar in the decade 2030 and Ludhiana in the decade 2050. The average yield at Hisar, Ambala, Modipuram and Kanpur in 2010 was 7744, 7654, 4347 and 4021 kg/ha respectively. Amritsar and Ludhiana showed maximum average yield of 6880 and 6877 kg/ha respectively, in the decade 2030. Such yield reductions in rice crops due to climate change are mediated through reduction in crop duration, grain number and grain filling duration. These projections nevertheless provide a direction of likely change in crop productivity in future climate change scenarios.Keywords
Agroclimatic Zones, Climate Change, Crop Simutation Models, Rice.Full Text
- Effect of Light Interception and Penetration at Different Levels of Fruit Tree Canopy on Quality of Peach
Abstract Views :183 |
PDF Views:79
Authors
Affiliations
1 Punjab Agricultural University, Ferozepur Road, Ludhiana 141 004, IN
1 Punjab Agricultural University, Ferozepur Road, Ludhiana 141 004, IN
Source
Current Science, Vol 115, No 8 (2018), Pagination: 1562-1566Abstract
Peach trees were trained to four systems, viz. Yshaped, Hedge row, Espailer and V trellis. Irrespective of the training system in upper canopy total PAR increased from January to July and then a decrease was recorded. However, in lower canopy an inverse trend was recorded. The total radiation intercepted during the year was maximum (59.99%) in Espailer system followed by V trellis (57.76%). Minimum radiation interception (49.05%) was recorded in trees trained to Hedge row. Upper canopy part of the tree received more PAR which influenced fruit quality in terms of size, weight, acidity, total sugars, firmness.Keywords
Canopy Management, Quality Improvement, Peach, PAR, Training Systems.Full Text
References
- Gruca, Z., Wplywpodkladekiformykoronynawzrost, plonowanieijakoscowocowjabloniodmian ‘Jonagold’ i ‘Melrose’. zesz. nauk. inst. sadow. Kwiac, 2001, 9, 101-107.
- Buler, Z. and Mika, A., Ocenawartoscikorony Mikado w porownaniu do koronywrzecionowej. XLIII Ogol.Konf.Sad.Skierniewice 1-3.09.2004, pp. 114-116.
- Greer, D. H. and Weedon, M. M., Modelling photosynthetic responses to temperature of grapevine (Vitisvinifera cv. Semillon) leaves on vines grown in a hot climate. Plant Cell Environ., 2012, 35(6), 1050-1064.
- Singh, H., Effect of planting densities and training systems on light interception, growth, productivity and nutrient composition of peach, Ph.D. Dissertation, Punjab Agricultural University, Ludhiana, India, 2001.
- Chenyl, R. H, Harvey, A. Q. and Robert, T. B., Canopy growth, Yield and fruit quality of ‘Royal Gala’ apple trees grown for eight years in five tree training system. HortScience, 2002, 37(4), 1223-1227.
- Singh, H. and Kanwar, J. S., Effect of planting distances and training systems on light interception in high density plantations of peach trees grown under subtropical conditions. Acta Hortic., 2004, 662, 225-229.
- Farina, V., Bianco, R. C. and Inglese, P., Vertical distribution of crop load and fruit quality within vase-and Y shaped canopies of ‘Elegant Lady’ peach. HortScience, 2005, 40(3), 587-591.
- Bartolini, S., Leccese, A. and Andreini, L., Influence of canopy fruit location on morphological, histochemical and biochemical changes in two oil olive cultivars. Plant Biosys., 2014, 148(6), 1221-1230.
- Sharma, R. R., Patel, V. B. and Krishna, H., Relationship between light, fruit and leaf mineral content with albinism incidence in strawberry (Fragaria x ananassa Duch.) Sci. Hortic., 2006, 109(1), 66-67.
- Bargioni, G., Loreti, F. and Pisani, P. L., Performance of peach and nectarine in a high density system in Italy. HortScience, 1983, 18, 143-146.
- Singh, A. and Dhaliwal, G. S., Solar radiation interception and its effect on physical characteristics of fruits of guava cv. Sardar. Acta Hortic., 2007, 735, 297-302.
- Drogoudi, P. D. and Pantelidis, G., Effects of position on canopy and harvest time on fruit physico-chemical and antioxidant properties in different apple cultivars. Sci. Hortic., 2011, 129(4), 752-760.
- Heinicke, D. R., Characteristics of ‘McIntosh’ and ‘Red Delicious’ apple as influenced by exposure to sunlight during the growth season. Proc. Am. Soc. Hortic. Sci., 1966, 89, 10-13.