vigna mungo
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Author(s):  
Pinky Raihing ◽  
A. Vijayalakshmi

Background: Composting is the process of breaking down of organic matter using living organisms which can be used as manure for soil conditioning. Vermicomposting is the rapid decomposition of biowastes using earthworm species which will enhance the growth and yield of plants. Methods: The vermicomposting of vegetable and fruit wastes was carried out during summer season (May-July) and by using the vermicompost a pot culture experiment was conducted in black gram for three months from August to October, 2019. The treatments consist of combinations of vermicomposted wastes and cowdung along with bioinoculants, Soil served as control. The biometric parameters such as root length, shoot length, fresh weight and dry weight on 15, 35, 55 DAS and yield characters like number of pods/plants, number of seeds/pods, pod length, weight of seed/pod, pod fresh weight and pod dry weight were recorded and statistically analysed. The present study has been attempted to convert the vegetables and fruit waste into compost as manure and analyse its effect on vegetative growth and yield parameters of Black gram (Vigna mungo L.). Result: The highest value of shoot length, root length, fresh weigh and dry weight were noted in fruit waste + cow dung + Pleurotus eous (APK1) + Trichoderma asperelloides + Eudrilus eugeniae on 15, 35 and 55 day after sowing (DAS) and the least was reported in control (only soil). The application of T8 treatment reported the highest yield characters which were followed by other treatments and control on 15, 35 and 55 DAS. The study concluded that T8 (F.W + cow dung + P. eous + T. asperelloides + Eudrilus eugeniae) is an effective biocompost for the growth and yield of black gram (Vigna mungo L.) which is eco-friendly.


Author(s):  
Anbarasu Mariyappillai ◽  
Gurusamy Arumugam ◽  
Swaminathan Chitraputhira Pillai ◽  
Durai Singh Ramaiah

Background: Black gram (Vigna mungo L.) and Green gram (Vigna radiata L.) were mostly used as chemical residue indicators for testing the persistence of pesticides, fungicides and herbicides, etc. in the soil. Presently, the coir pith was used as a medium of nursery for many seeds and seedling production. This study evaluated the inhibition effects and screening of allelopathic chemicals from aqueous extracts of coir pith and composting coir pith on the back gram and green gram by response index method and GCMS/MS analysis. Methods: The coir pith and composted coir pith soaked the ratio of 1:10 for 24 hrs, filtered through Whatman No.1 filter paper. The inhibition effect tested for germination and seedling growth of black gram and green gram was sown in poly pots. The carbon: nitrogen ratio and the total organic carbon were analyzed by dry combustion method, Kjeldahl method and GCMS/MS analysis. Result: The phytotoxic substances are present in coir pith, which can be exterminated by composting the coir pith for better growth and development of seedlings. The negative response index (RI), high C: N ratio and chemical compounds like tocopherol, fucoxanthin, tetramethyl heptadeca, dichloroacetamide, tetrazole, hydroxyethyl palmitate, neocurdione and uridine derivations present in raw coir may have the phytotoxic effect and produced yellowing symptoms in young plants compared to composted coir pith. This is exterminated by composting the coir pith for better growth and development of seedlings as well as used for various agricultural and horticultural nurseries.


Author(s):  
Periyasamy Dhevagi ◽  
Ambikapathi Ramya ◽  
Sengottiyan Priyatharshini ◽  
Ramesh Poornima

2021 ◽  
Vol 939 (1) ◽  
pp. 012069
Author(s):  
R Bansal ◽  
P Gauba

Abstract Hexavalent Chromium is a major soil pollutant; thus, its remediation from soil deserves due attention. Phytoremediation is an area of active current research which is eco-friendly and economic. Use of leguminous plants for phytoremediation will improve soil quality, fertility and nutrient balance and would help in restoration of natural soil ecosystem. The present study focuses on the use of two commonly growing legumes; Cicer arietinum (RP1) and Vigna mungo (RP2) to explore their remediation potential towards Cr(VI) with concentration ranging from 100-900 mg kg−1 with the growth up to three weeks and were assessed for remediation potential and toxicity parameters. Higher percentage of decrease in root and shoot length was observed in RP2 as compared to RP1. Chlorophyll content was also found to be decreasing with increasing Cr stress in both the species. RP2 recorded higher BCF than RP1. Highest bioaccumulation factor 4.32 was observed in RP2 at 400 mg kg−1 concentration. Translocation factor >1 was observed in both the plants with highest as 1.67 at 600 mg kg−1 in RP2 and 1.93 at 400 mg kg−1 in RP1. Remediation percentage of 72.25% in RP2 at 600 mg kg−1 and 73.13% at 400 mg kg−1 in RP1 was observed. Both the plants showed high tolerance and remediation potential towards Cr(VI) therefore has a great phytoremediation prospect, however, RP2 can be preferred over RP1.


Author(s):  
Gayacharan ◽  
Kuldeep Tripathi ◽  
Muraleedhar S. Aski ◽  
Neeta Singh ◽  
Ashok Kumar ◽  
...  

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2329
Author(s):  
Purabi Banerjee ◽  
Visha Kumari Venugopalan ◽  
Rajib Nath ◽  
Yusuf S. Althobaiti ◽  
Ahmed Gaber ◽  
...  

Heat and soil moisture stress account for serious abiotic constraint in black gram (Vigna mungo (L.) Hepper) production during spring–summer under Gangetic plains of Eastern India. Concurrence of these two can bring about early completion of phenophases that hampers normal metabolism of legumes by disrupting their defense mechanism, leading to poor seed set. The field experiment was conducted with two different sowing dates as the main plot, soil application of cobalt (Co) as subplots and foliar sprays of potassium (K) and boron (B) either alone or in combination as sub–sub plot treatment in a split–split plot design during spring–summer seasons of 2020 and 2021 with black gram (variety: Pant U 31). The study was aimed at evaluating the impact of sowing time and nutrients application alleviating adversities of abiotic stress during reproductive development of black gram. The March first week sown crop took significantly higher days to complete its life cycle compared to March third week sown one (82.0 vs. 78.2 and 81.8 vs. 78.8). This in turn relatively allowed a broader window for leaf area expansion, flowering, and seed filling in the first crop compared to the second one leading to the attainment of superior yield in the normal sown crop during the consecutive years. Crop growth rate (CGR), net assimilation rate (NAR), pod number per plant, seed yield, and harvest index were significantly higher (p ≤ 0.05) with soil Co @ 4 kg ha−1 and foliar 1.25% K + 0.2% B applications through stress mitigation by stimulating chlorophyll biosynthesis, nitrate reductase activity, proline accumulation, and cell membrane stability, irrespective of the years. Fluctuations in per plant pod number explained about 96 and 94% variations in seed yield through linear regressions in respective years. Optimum sowing date along with soil Co application combined with foliar K+B sprays manifested immense potential to achieve higher black gram production. In addition, this nutrient schedule proved to be efficient enough to promote satisfactory growth and optimum seed yield of late sown blackgram through relief of stress during the spring–summer season.


2021 ◽  
Vol 42 (6) ◽  
pp. 1554-1559
Author(s):  
G. Jat ◽  
◽  
S.K. Sharma ◽  
R.H. Meena ◽  
D. Jain ◽  
...  

Aim: To study the amelioration of zinc deficiency in blackgram (Vigna mungo L.) through soil applied zinc in Typic Haplustepts soil of Rajasthan. Methodology: A two year field experiment was undertaken during Kharif 2016 and 2017 at Instructional Farm (Agronomy), Rajasthan College of Agriculture, Udaipur, Rajasthan. The treatments comprised application of Zn to soil @ 3 kg Zn ha-1, 4 kg Zn ha-1, 5 kg Zn ha-1 and 6 kg Zn ha-1. The experiment was laid out in a randomized block design with four replications. Results: Application of zinc significantly (P=0.05) increased the number of nodules per plant, number of pods per plant, number of seeds per pod, seed yield, haulm yield, biological yield, nutrient (N, P, K & Zn) content and uptake, protein content, net return and B:C ratio in blackgram. Soil application of Zn@5 kg ha-1 significantly increased seed yield, haulm yield and biological yield by 72.53, 50.08 and 57.68 per cent over the control in pooled analysis, respectively. However, the effect of application of Zn@5 kg ha-1 on yield attributes, yield, nutrient content, uptake, quality and economics of blackgram was found statistically at par with the application of 6 kg Zn ha-1. Interpretation: The application of Zn@ 5 kg ha-1 along with the recommended dose of fertilizer (NPK) resulted in significantly (P=0.05) higher productivity, nutrient uptake, quality and profitability of blackgram under Typic Haplustepts soil of Rajasthan.


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