Role of agronomic manipulations in modification of wheat microclimate under central Punjab
Article Main
Abstract
Wheat crop is influenced by different microclimatic parameters like solar radiation, canopy temperature etc. Agronomic manipulation like change in row spacing and row direction can be used as a strategy to modify the microclimate of crop. Keeping these facts in view, field trials were conducted during rabi 2012-13 and 2013-14 under two experiments in first experiment wheat varieties HD 2967, PBW 550 and PBW 343 were sown under three row spacing viz. 15 cm, 22.5 cm and 30 cm. In second experiment, wheat varieties HD 2967, PBW 550 and PBW 343 were sown under two row direction viz. North-South (N-S) and East-West (E-W). Short wave radiation interception and canopy temperature was recorded under different treatments at 15 days interval. Among different row spacing, short wave radiation interception and canopy temperature was maximum at 30 cm row spacing (77.7% and 25.1oC) followed by 22.5 cm (75.7% and 24.2oC) and 15 cm row spacing (73.9% and 23.2oC), whereas under row directions short wave radiation interception and canopy temperature was more (76.5% and 23.9oC) in E-W row direction as compared to N-S row direction (75% and 23.2oC). Relationships were developed between dry matter accumulation and canopy temperature. Polynomial relationships gave significant R2 value (0.66 & 0.69) under different treatments. This two year study indicated that agronomic manipulations play an important role in microclimate modification and canopy temperature significantly influence dry matter accumulation under different crop geometry.
Article Details
Article Details
Canopy temperature, Microclimate, Short wave radiation, Wheat
Anonymous (2014) Department of Agriculture, Punjab. Chandigarh.
Braun, H. J., Atlin, G. and Payne, T. (2010). Multi location testing as a tool to identify plant response to global climate change. In Reynolds MP (Eds) Climate change and crop production. Wallingford, UK:CABI Publishers. pp:115-38
Carretero, R., Serrago, R. A., Bancal, M. O., Perello, A. E. and Miralles, D. J. (2010). Absorbed radiation and radiation use efficiency as affected by foliar diseases in relation to their vertical position into the canopy in wheat. Field Crop Res., 116: 184-195
Charles-Edwards, D. A. (1981). Physiological determinants of crop growth. Academic Press. Sydney, pp:158.
Chen, Suyin., Xiying, Zhang., Hongyong, Sun.,Tusheng, Ren. and Yanmei, Wang. (2010). Effects of winter wheat row spacing on evapotranpsiration, grain yield and water use efficiency. Agric. Water Mgt., 97:1126–32
Hundal, S. S. (2004). Climatic changes and their impact on crop productivity vis-à-vis mitigation and adaptation strategies, Proc. Workshop on Sustainable Agriculture Problems and Prospects. pp 148-53. Punjab Agricultural University, Ludhiana, India
Jarwal, S. D. and Singh, P. (1990). Influence of planting geometry on photosynethically active radiation interception and dry matter production relationships in pearlmillet. Biomass, 21: 273-284
Joshi, A. K., Mishra, B., Chatrath, R., Ortiz Ferrara, G. and Singh, R. P. (2007). Wheat improvement in India: Present status, emerging challenges and future prospects. Euphytica, 157: 457-464
Kaur, K., Mathauda, S.S. and Bains,, G.S. (2002). Prediction of grain yield from canopy temperature based indices. J. Res. Punjab Agric. Univ., 39: 346-353
Khan, H. R., Paull, J. G., Siddique, K. H. M., Stoddard, F. L. (2010). Faba bean breeding for drought-affected environments- A physiological and agronomic perspective. Field Crops Res., 115: 279-286
Kingra, P. K., Mahey, R. K., Gill, K. K., Mukherjee, J. and Bal, S. K. (2010). Prediction of grain yield of wheat using canopy temperature based indices. J. Agromet.,12: 61-63
Kumar, M., Raghuwanshi, N. S., Singh, R., Wallender, W. W. and Pruitt, W. O. (2002). Estimating evapotranspiration using artificial neural network. J. Irr. Drain., 128: 224-233
O’Connell, M. G., O’Leary, G. J., Whitfield, D. M. and Connor, D. J. (2004). Interception of photosynthetically active radiation and radiation-use efficiency of wheat, field pea and mustard in a semi-arid environment. Field Crops Res., 85: 111-124
Reddy, S. R. (2006). Agronomy of field crops, pp: 143-88. Kalyani Publishers.
Tompkins, D. K., Fowler, D. B., and Wright, A. R. (1993). Influence of agronomic practices on canopy microclimate and septoria development in no-till winter wheat produced in the Parkland region of Saskatchewan. Can. J. Plant Sci., 73: 331-44.
Virmani, S. M. (1994) Climatic research characterization in stressed tropical environment, constraints and opportunities for sustainable agriculture. Proc Intern. Symp. on agroclimatology and sustainable agriculture in stressed environments. Oxford IBH publishing Co Pvt Ltd, New Delhi.pp.149-60.
Yang, Wen. Ping., Guo, Tian. Cai. and Liu, Sheng. Bo. (2008) Effects of row spacing in winter wheat on canopy structure and microclimate in later growth stages. Chinese J. Pl. Eco., 32: 485-490.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)
