EFFECT OF CALCIUM AND BORON ON GROWTH, DRYMATTER PARTITIONING AND YIELD OF GROUNDNUT
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Date
2019
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Acharya N G Ranga Agricultural University, Guntur
Abstract
A field experiment was conducted entitled effect of calcium and boron on growth, drymatter partitioning and yield of groundnut under rainfed conditions during kharif 2018 in dryland farm, S.V Agricultural College, Tirupati. The experiment was laid out in randomized block design and replicated thrice with ten treatments and one variety Dharani. The groundnut differed in response to treatments (soil and foliar application of calcium and boron) in physiological, biochemical and yield characters.
Among the all the treatments RDF + foliar application of borax at 35 DAS @ 0.1% + foliar application of calcium nitrate at 35 DAS @ 0.3% recorded highest plant height followed by RDF + gypsum application to soil during flowering @ 500 kg ha-1 + foliar application of borax at 35 DAS @ 0.1% recorded which highest leaf area , and total drymatter when compared to control.
The growth parameters CGR, RGR, LWR, LAI were recorded highest in the treatment RDF + gypsum application to soil during flowering @ 500 kg ha-1 + foliar application of borax at 35 DAS @ 0.1% followed by RDF + foliar application of borax at 35 DAS @ 0.1 % + foliar application of calcium nitrate at 35 DAS @ 0.3% when compared to control. The growth parameter leaf area ratio was recorded highest in RDF + gypsum application as basal @ 500 kg ha-1.
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The treatment RDF + gypsum application to soil during flowering @ 500 kg ha-1 + foliar application of borax at 35 DAS @ 0.1 % also recorded highest biochemical activity, reproductive efficiency when compared to control. Root nodulation parameters such as number of nodules were recorded highest in RDF+ Foliar application of Borax at 35 DAS @0.1% and partitioning of drymatter content in different plant parts was observed more in kernels which shows that the photosynthates diverting to the sink i.e., pods.
Computing yield advantage and B:C ratio of the treatments RDF + gypsum application to soil during flowering @ 500 kg ha-1 + foliar application of borax at 35 DAS @ 0.1% recorded maximum pod yield followed by RDF + foliar application of borax at 35 DAS @ 0.1% + foliar application of calcium nitrate at 35 DAS @ 0.3%.
The present study revealed that gypsum application at 35 DAS @ 500 kg ha-1 along with foliar application of borax @ 0.1% recorded the highest physiological, growth parameters and yield. The other treatments such as RDF + foliar application of borax at 35 DAS @ 0.1% + foliar application of calcium nitrate at 35 DAS @ 0.3%, soil and basal application of gypsum, borax showed moderate performance. Hence it can be recommended that foliar application of borax along with gypsum at 35DAS is ideal in order to obtain good yield.
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D5837
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