Background: Phosphorus (P) and zinc (Zn) are essential plant nutrients and their deficiency in soils has the adverse effect on the crop productivity, moreover the antagonistic effect of P on Zn is also important study aspect. Hence, the present investigation was carried out to study the effect of phospho enriched compost and zinc on productivity, nutrient content and uptake of Blackgram (Vigna mungo L.) in Sub-humid Southern Hills and Aravalli region of Rajasthan. Methods: The experiment was undertaken during Kharif 2018 at Rajasthan College of agriculture, Udaipur (Rajasthan). The treatments comprised of four levels of phospho enriched compost (PEC) i.e. control, PEC @ 2.0, 4.0 and 6.0 t ha-1 and four levels of zinc i.e. control, Zn @ 2.0, 4.0 and 6.0 kg ha-1. The experiment was laid out in a factorial randomized block design with three replications.Result: The increasing levels of phospho enriched compost and zinc upto 4 t ha-1 and 4 kg ha-1, respectively increased significantly (P=0.05) the number of nodules per plant, number of pods per plant, number of seeds per pod, test weight, seed yield, stover yield, nutrient content (N, K and Zn) and uptake (N, P, K and Zn) in seed and stover of blackgram. Whereas, the application of zinc significantly decreased the phosphorus content in seed and stover as compared to control. However, the combined application of phospho enriched compost @ 6 t ha-1 along with zinc @ 6 kg ha-1 was found to record higher seed and stover yield. The application of phospho enriched compost @ 4 t ha-1 and zinc @ 4 kg ha-1 along with the recommended dose of fertilizer results in significantly higher productivity, nutrient content and uptake of blackgram under Typic Haplustepts soil.
A pot experiment was laid out at Sri Karan Narendra College of Agriculture, Jobner in 2015 during kharif season using cowpea as a test crop to study the influence of soil salinity, phosphorus sources and biofertilizers on yield and total nutrient uptake by cowpea (Vigna unguiculata L.). The experiment was tested in completely randomized design in which three levels of each salinity (EC 1.22, 4.0 and 6.0 dS/m), phosphorus (single super phosphate, di ammonium phosphate and phosphorus rich organic manure) and biofertilizers (control, phosphorus solubilizing bacteria and phosphorus solubilizing bacteria + vesicular arbuscular mycorrhiza) were used with three replications. The experimental data showed that soil salinity (EC 1.22 dS/m) recorded significantly higher yield and total nutrient uptake by cowpea in comparison to other treatments. But nitrogen content lowest recorded at EC 1.22 dS/m. Result further revealed that phosphorus source phosphorus rich organic manure recorded significantly maximum yield and total nutrient uptake by cowpea over rest of the treatments. Furthermore, seed inoculation with phosphorus solubilizing bacteria + vesicular arbuscular mycorrhiza recorded the maximum yield and nutrient uptake by cowpea over rest of the treatments. It’s concluded that combination of EC 1.22 dS/m + phosphorus rich organic manure + Biofertilizers (phosphorus solubilizing bacteria + vesicular arbuscular mycorrhiza) found superior in all these parameters over the control.
Field experiment was conducted during the kharif seasons of 2017 at Sri Karan Narendra Agriculture University, Jobner (Jaipur) to assess the effect of biofertilizers and organic manures on production efficiency, water productivity and monetary efficiency of okra. The study had four organic manures and four biofertilizer treatments that were replicated thrice in factorial randomized block design. Vermicompost application @ 6 t ha-1 resulted into the maximum production efficiency (201 kg ha-1day-1) and water productivity (54 kg ha-1mm-1) whereas poultry manure (@ 8 t ha-1) reported greatest monetary efficiency (Rs. 3013 ha-1day-1). Among the biofertilizers, dual seed treatment with both Azosprillum + PSB recorded 39%, 40% and 55% higher production efficiency, water productivity and monetary efficiency than control. Fourth picking yielded the greatest tonnes of fruit and yield declines after it. Application of organic manures and biofertilizer enhanced okra yield up to 5.9 and 3.8 t ha-1, respectively. Therefore, poultry manure and double inoculation with biofertilizer is advisable for okra production under poorly fertile soils.
A pot experiment was conducted in kharif season during 2016 at S.K.N. College of Agriculture, Jobner, to study the effect of different levels of sodium absorption ratio and iron on ionic composition in cowpea. Four levels of each sodium adsorption ratio (SAR) 10, 15, 20, 25 and iron (Fe) control, 5, 10 and 15 kg/ha were tested in completely randomized design with three replications. The result indicate that higher Na content, Na/Ca, Na/K, Na+K/Ca and lower Ca, Mg, K content and Ca/Mg ratio in grain and straw of cowpea was noted with increasing level of SAR. Application of Fe narrowed down the Na content, Na/K, Na+K/Ca and Na/Ca ratio in seed and straw significantly, while it increase the Ca, Mg, K content and Ca/Mg ratio in seed and straw. Among the treatment combinations, combined application of SAR 15 with Fe (@ 20 FeSo4.7H2O) proved superior in all these parameters over other treatments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.