IMPACT OF DIFFERENT BORON LEVELS ON YIELD IN GROUNDNUT VARIETIES
An experiment was carried out to study the effect of different levels of boron (B) on yield of three bold seeded groundnut cultivars viz., Binachinabadam-1, Binachinabadam-2 and Binachinabadam-3. Plants were grown in sand using nutrient solution in the pots. The experiment comprised six levels of boron viz., 0, 1.5, 2.0, 2.5, 3.0 and 3.5 kg ha-1. Results indicated that physiological parameters, reproductive characters, yield attributes and pod yield increased with increasing levels of boron application till 2.5 kg B ha-1. The highest total dry matter (14.02 g plant-1), number of opened flowers (44.07 plant-1) and reproductive efficiency (46.53%) were recorded in 2.5 kg ha-1 and the lowest was recorded in 3.5 kg B ha-1 except reproductive efficiency. The highest number of pods plant-1 (20.67), single pod weight (832 mg) and pod weight plant-1 (17.09 g) was observed in 2.5 kg B ha-1 application followed by 2.0 kg B ha-1. In contrast, application of B @ 3.5 kg ha-1 showed the lowest number of pods (8.60) and pod yield (6.94 g). Among the varieties, Binachinabadam-1 produced the highest pod yield (12.81 g plant-1).
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