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Vol. 11, Issue 5 (2022)

Influence of foliar spray of plant growth regulators and nutrients on physiological and biochemical parameters and yield of paddy at two situations

Author(s):
Amarshetti Kiran, Patil RP, Begum Yasmeen and Mahantashivayogayya
Abstract:
A field experiment was conducted at Agricultural Research Station, Gangavati, UAS, Raichur, Karnataka, during kharif 2019 to study the physiological approaches to sustain the rice (Oryza sativa L.) productivity under late sown situation (var. RNR-15048). The experiment was laid out in factorial RCBD with three replications, where two dates of transplanting were taken i.e. D1 (Normal) and D2 (Late) and six treatments along with control viz., T1: NPK-19:19:19 (20000 ppm), T2: 6-BAP (20 ppm), T3: salicylic acid (250 ppm), T4: mepiquat chloride (1000 ppm), T5: borax @ (10000 ppm) and T6: control. The results of physiological parameters obtained at 65 DAT and biochemical parameters obtained at 55 DAT indicated that D1 (Normal DOT) showed higher values as compare to D2 (Late DOT) in all the treatments. Among different treatments, T1 (NPK-19:19:19 @ 20000 ppm) recorded the significantly greater results of physiological parameters viz., photosynthetic rate (9.20 μ mol CO2 m-2 s-1), transpiration rate (2.10 m mol H2O m-2 s-1), SPAD value (28.42), NDVI value (28.42) and biochemical parameters such as chlorophyll content ‘a’(2.64 mg g-1 fr. wt.), ‘b’(0.85 mg g-1 fr. wt.) and total (3.49 mg g-1 fr. wt.). Whereas the next best treatment was T2 (6-BAP @ 20 ppm) over rest of the treatments. The highest grain yield plant-1 (21.55) were recorded in T1 (NPK-19:19:19 @ 20000 ppm) than other treatments. It was concluded that D1 (Normal DOT) was the best situation and among foliar application of different agrochemicals T1 (NPK-19:19:19 @ 2.0%) was found to be the best treatment, it was ideal and economically feasible at 35,45 DAT and at 55 DAT.
Pages: 489-493  |  327 Views  114 Downloads


The Pharma Innovation Journal
How to cite this article:
Amarshetti Kiran, Patil RP, Begum Yasmeen, Mahantashivayogayya. Influence of foliar spray of plant growth regulators and nutrients on physiological and biochemical parameters and yield of paddy at two situations. Pharma Innovation 2022;11(5):489-493.

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