PHYSIOLOGICAL APPROACHES FOR DROUGHT MITIGATION IN CHICKPEA (Cicer arietinum L.)
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Date
2019-07
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UNIVERSITY OF AGRICULTURAL SCIENCES RAICHUR - 584 104
Abstract
A field experiment was conducted at Zonal Agricultural Research Station, Kalaburgi, University of Agricultural Sciences, Raichur, during the rabi 2018-19 to study the effect of drought mitigating chemicals on phonological, morphological, growth, physiological, biochemical and yield parameter of chickpea under drought condition. The experiment was laid out in Randomized Block Design with eleven treatments in three replications. The treatments viz., seed priming with 2% CaCl2, foliar spray of chemicals 2% urea, salicylic acid (100 ppm), cycocel (100 ppm), 0.1% boron, and novel formulations pulse magic and chickpea magic (released by ZARS, Kalaburgi). Observations were recorded regularly at 20 days interval from 40 DAS upto harvest.
The results were analyzed for variance and were significant for morphological, physiological, growth, biochemical, yield and yield components with application of various nutrients and plant growth regulators.It may be concluded that, foliar spray of chickpea magic 8g/l had an additive influence on physiological parameters viz., relative water content (61.94 %) photosynthetic rate (21.05μ mol CO2 m-2 s-1), transpiration rate (4.95m mol H2O m-2 s-1) and on biochemical parameters including total chlorophyll content (1.73mg g-1fr.wt.), proline content (8.78μ mole g-1fr. wt.), chlorophyll stability index (76.92%). Significant increase in these parameters had improved the drought tolerance in chickpea. Hence, the foliar spray of chickpea magic 8g/l at 50% flowering recorded the highest yield (2514 kg ha-1) than other treatments under drought. The significant increase in seed yield may be attributed to the increase in total number of branches (12.30) and total dry matter accumulation (36.42 g plant -1), leaf area (5.47 dm2), number of pods per plant (118.33), test weight (23.52g) and harvest index (56.14).
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