Studies on varying application mode of Fe and Zn on growth, yield and quality parameters of lentil (Lens culinaris L.)
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Date
2023
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RPCAU, Pusa
Abstract
Among the plethora of emerging technologies, the utilisation of nutrients for the purpose of augmenting crop yield via seed, soil, and foliar application, alongside the optimisation of nutrient utilisation efficiency, is widely acknowledged as a highly effective and economically viable approach to bolstering nutrient demands during pivotal growth phases.
For this an investigation entitled, “Studies on varying application mode of Fe and Zn on growth, yield and quality parameters of Lentil “was carried out at the research farm of Tirhut College of Agriculture, Dholi (Muzaffarpur) during Rabi 2022-23. In experiments there were seven treatments such as T1 100%RDF (control) which is common to all seven treatments having difference of 0.5% ZnSO4 in (T2), 0.5% FeSO4 (T3), 0.5% ZnSO4 + 0.5% FeSO4 (T4) applied on foliage at pre flowering and pod germination stage. In T5 & T6 seed priming with 0.05% ZnSO4 (W/v) & 0.05% FeSO4 (W/v). Whereas in T7 soil application of ZnSO4 @20kg ha-1was used at the time of sowing. In the current investigation, the foliar treatments utilized for nourishment included ZnSO4.7H2O (containing 21% Zn) and FeSO4.7H2O (containing 19% Fe). Throughout the experiments, a quantity of 300 litres of water was employed for every foliar application in a one-hectare area. The findings demonstrated that ZnSO4 to the soil at a rate of 20 kg per hectare and 100% RDF as basal. The baseline measurements exhibited notably superior growth indicators, yield characteristics, grain yield, net earnings, benefit-cost ratio, nutritional composition, & nutrient assimilation. Their outcome at par result with treatment T4 having foliar spray of ZnSO4 + FeSO4 @ 0.5% during the pre-flowering and pod formation stages. These both treatments (T1, T4) were superior over other treatments. The highest levels of zinc and iron in lentil grains were similarly observed with the approach of soil application of ZnSO4 at 20 kg per hectare and ZnSO4 and FeSO4 at 0.5% spray on foliage during pre-flowering and pod formation stages (measuring 67.34 and 64.66 mg of zinc per kg, and 76.81 and 80.52mg of iron per kg of grain respectively). Thus, it can be said that these techniques enhance the nutritional content in lentil grains, consequently offering a potential solution to mitigate micronutrient (zinc and iron) malnutrition in human populations.