Summer Mungbean Research Articles

Intensification of Cereal-Cereal System with Summer Mungbean Changes Carbon Pool with Net Increase in Soil Carbon

Intensification of Cereal-Cereal System with Summer Mungbean Changes Carbon Pool with Net Increase in Soil Carbon

Optimizing yield and water productivity in summer mung bean (Vigna radiata L.) through crop residue management and irrigation strategies

A multi-season research trial entitled ‘crop residue management effects on yield and water productivity of summer mung bean (Vigna radiata L.) under different irrigation regimes in Indian Punjab’ was conducted at Punjab Agricultural University (PAU), Regional Research Station (RRS), Bathinda, during rabi 2020 and 2021. The field experiment was conducted in a split-plot layout with nine treatment combinations and replicated thrice. The treatments consisted of T1 (no wheat residue along with tillage), T2 (leftover wheat residue with zero tillage), and T3 (incorporated wheat residue along with tillage) in main plots and irrigation regimes viz., I1 (vegetative growth and flowering stage), I2 (vegetative growth, flowering, and pod filling stage) and I3 (vegetative growth, flowering, pod formation and pod filling stage) in sub-plots, respectively. The growth and yield attributing characters were significantly higher under T3 than T1 but statistically at par with T2 during both years. An increase of 24.1% and 19.0% in grain yield was found in residue incorporation (T3) and residue retention (T2) over residue removal (T1), respectively. Maximum crop and irrigation water productivity was observed under T3 due to reduced water use and increased yield. Among the irrigation regimes, the I3 recorded significantly higher grain yield (0.70 and 0.79 t ha− 1) than I1. It was at par with I2 during both years due to higher irrigation frequency at the pod formation and pod filling stage. Crop water productivity (CWP) was higher under I3, whereas irrigation water productivity (IWP) was higher under I1 during both years. Additional irrigation at the pod-filling stage increased the grain yield by 36.5%, and two additional irrigations at the pod-formation and pod-filling stage further increased yield by 46.2% compared to only two irrigations at the vegetative and flowering stages. The treatment combinations of T2I2 and T3I2 outperformed T1I3 in terms of growth and yield attributing characters viz. plant height, dry matter accumulation (DMA), leaf area index (LAI), pods plant− 1, seeds pod− 1, and 1000-seed weight, which resulted in higher grain yield in these treatment combinations over T1I3. Applying crop residue can help minimize water use and increase crop water productivity. So, retaining crop residue in summer mung bean resulted in saving irrigation water due to lesser evapotranspiration from the soil surface.

Cover crop and herbicides can control purple nutsedge (Cyperus rotundus L.) and increase crop yields in conservation agriculture-based crop rotations

Adoption of conservation agriculture (CA) practices can lead to the dominance of perennial weeds including purple nutsedge (Cyperus rotundus L.) in different agroecologies over time. Without effective management of this weed, successful adoption of CA in smallholder farming systems is rather unlikely. Therefore, we aimed to develop an integrated strategy for managing C. rotundus in CA-based crop rotations. This study encompassed a two-year (during 2020–21 and 2021–22) field experimentation at Kanpur, India with a split-plot design with three replications. The treatments included purple nutsedge management practices in main plot and crop rotations in sub-plot under CA platform (no-tilled with added crop residues). Six management options were adopted in the summer season (during April to June) as main plots that were super-imposed with two crop rotations such as pigeonpea (Cajanus cajan (L.) Huth) – wheat (Triticum aestivum L.) and pearlmillet (Pennisetum glaucum (L.) R.Br) – chickpea (Cicer arietinum L.) as sub-plot. Growing of cover crop Sesbania (Sesbania aculeata (Willd.) Pers.) during the summer season for 45 days followed by knockdown with 2,4-D 500 g a.i. Ha−1 (cultural management; Sesbania+2,4-D) and/or summer irrigation followed by application of halosulfuron-methyl 70 g a.i. Ha−1 at 20 days after irrigation (chemical management; halosulfuron-methyl) reduced the C. rotundus density by 37–42% and 23–64% over years, respectively, than conventional practice (ploughing during summer followed by irrigation and glyphosate 1.5 kg a.e. Ha−1 application). Besides, these practices could decrease 25–27% total weed density (p < 0.05) than conventional practice (mean of years) in summer season. Importantly, these management practices had a carry-over effect on reduction in density of C. rotundus and total weeds of rainy and winter season crops. For instance, Sesbania +2,4-D and halosulfuron-methyl decreased 35% and 15% density of C. rotundus, respectively, during rainy season than conventional practice. Irrespective of crop rotations, Sesbania +2,4-D and halosulfuron-methyl decreased 30–40% density of C. rotundus (mean of years) in winter season than conventional practice (p < 0.05). A significant reduction in dry weight of C. rotundus was recorded under Sesbania +2,4-D and halosulfuron-methyl in summer season by 13–23%, rainy season by 23–29%, and winter season by 55–72% than conventional practice. Pearlmillet-chickpea rotation had a 10–35% lower infestation of C. rotundus than pigeonpea-wheat (p < 0.05). Management practices such as Sesbania +2,4-D and halosulfuron-methyl had higher system productivity by 15–19% in 2020–21 (p < 0.05), 5–7% in 2021–22 (p > 0.05), and 10–12% in average (p > 0.05) than conventional practice. Summer mungbean cultivation increased 45.2% and 10.1% density of C. rotundus in rainy season over Sesbania +2,4-D and halosulfuron-methyl in CA system, respectively (p < 0.05). Furthermore, the density of this weed was significantly higher under pigeonpea crop during rainy season by 41.4% than under pearlmillet crop (mean of years). Therefore, system-based approaches such as growing of cover crop Sesbania followed by knockdown with 2,4-D (Sesbania +2,4-D) and/or herbicide-based management through halosulfuron-methyl during summer season and subsequently recommended weed management practices in cropping systems (pearlmillet – chickpea and pigeonpea – wheat) can reduce the infestation of C. rotundus and total weeds in CA than conventional practice.

Influence of Sowing Methods and Phosphorus Levels on Growth, Yield and Economic Returns of Summer Mungbean (Vigna radiata L.)

Influence of Sowing Methods and Phosphorus Levels on Growth, Yield and Economic Returns of Summer Mungbean (Vigna radiata L.)

Evaluation of Tractor Mounted Axial Flow Combine Harvester for Mung Bean (Vigna radiata L.)

A cost-effective, tractor mounted axial flow combine harvester designed to minimize harvesting losses was evaluated. Performance evaluation of the machine was done on summer mung bean (Vigna radiata L. Wilczek) under various operational conditions: three forward speeds (FS): 2.1, 3.0, and 4.8 km h-1, three-cylinder peripheral speeds (PS): 11.08, 13.16, and 14.79 m s-1, and days after irrigation (DAI): 2, 4, and 6 days after last irrigation. Threshing efficiency, cleaning efficiency, broken percentage, shattering losses, and non-collectable losses were estimated. Cost of operation of the combine harvester was compared with manual harvesting and subsequent threshing using a spike tooth type thresher. The results show that the threshing efficiency and grain breakage increased by 1.1% and 1.01%, respectively, with an increase in DAI and PS, however, both these parameters decreased with an increase in FS. The non-collectable loss increased by 0.9% with an increase in FS and DAI; however, PS did not affect the non-collectable losses. The cleaning efficiency increased with an increase in FS, but it decreased with an increase in PS and DAI. The shattering loss increased with an increase in FS and DAI, although PS had no impact. The best combination of operational variables for threshing operation was found for treatment combination of 6 days after last irrigation, with a cylinder peripheral speed of 14.79 m s-1 and a forward speed of 3.0 km h-1. At this combination, threshing efficiency, non-collectable losses, grain breakage, and cleaning efficiency were 99.28%, 4.53%, 2.96%, and 95.89%, respectively. This combine-harvester saved 91.75% in labor costs and 53.71% in harvesting costs compared to the combination of manual harvesting and subsequent threshing using a spike tooth type thresher.

Screening New Mungbean Varieties for Terminal Drought Tolerance

Rainfed mungbean crops in Queensland Australia frequently experience terminal drought (drought stress in the final stages of reproductive development), highlighting the importance of drought-tolerant varieties for sustainable mungbean production. Given there is limited information on the relative drought tolerance of current mungbean varieties in Australia, the study of genetic variations and mechanisms of drought tolerance in summer mungbean can provide a basis for developing drought-tolerant mungbean varieties. This study evaluated the physiological, biochemical, and phenological traits underpinning yield attributes associated with drought tolerance in selected mungbean varieties. Four new mungbean varieties (AVTMB#1 to 4) and the Australian commercial line (Jade-AU) were grown in tall (75 cm) polyvinyl chloride (PVC) lysimeters where drought stress was imposed at the early flowering stage (R1) and maintained until maturity. Drought stress significantly impacted all the varieties. Averaged across all the varieties, drought stress was associated with a reduction in stomatal conductance (gs) and photosynthetic rate (Asat) by 78% and 86%, respectively, compared to well-watered plants. Internal carbon dioxide concentration (Ci), the effective quantum yield of photosystem II (ΦPSII) and maximum light-use efficiency of light-acclimated photosystem II (PSII) centres (Fv’/Fm’) were also decreased, while excitation pressure (1-qP) increased with drought treatment. A positive correlation (r = 0.60) existed between seed yield and ΦPSII assessed at R1, while a weak correlation with Fv’/Fm’ (r = 0.24) was observed. Excitation pressure (1-qP) at the R1 stage was negatively correlated with seed yield (r = −0.66). Therefore, leaf fluorescence measures, viz., 1-qP and ΦPSII, were recommended for use in screening mungbean varieties for drought tolerance. The varieties, AVTMB#1 and AVTMB#4, respectively achieved 39 and 38% greater seed yields relative to the commercial variety, Jade-AU, under terminal drought conditions.

Multilevel growth assessment of mungbean production in Madhya Pradesh

The present study aimed to examine the growth performance of mungbean in Madhya Pradesh, which is the second-highest pulse-producing state in India. With the development of short-duration mungbean varieties, the crop can be cultivated in spring/summer along with Kharif and Rabi seasons. The districtwise time series data on the area, production, and productivity of mungbean in Madhya Pradesh was collected. The growth performance and instability were analyzed using the Compound Annual Growth Rate and Cuddy Della Valle Index. Further, the decomposition analysis was performed to examine the sources of growth in mungbean production. The growth performance was also examined for major mungbean-producing districts of Madhya Pradesh viz; Narmadapuram (Hoshangabad), Sehore, Harda, Narshingpur, and Raisen districts. The growth performance of mungbean in Madhya Pradesh was examined for sub-period I (2000-01 to 2009-10) and sub-period II (2010-11 to 2019-20). The study revealed that the Narmadapuram division of Madhya Pradesh recorded the highest growth rate in area and production for the period 2010-11 to 2019-20. Higher growth rate and instability in the area, production, and productivity was observed in sub-period II which may be attributed to the incentives under NFSM-pulses and area coverage under summer mungbean cultivation during the last decade.

Analysing Growth Trend, Profitability and Resource Use Efficiency of Summer Mungbean in Eastern Haryana

Background: Mungbean [Vigna radiata (L.) Wilczek] is the most extensively sown crop among commonly produced Asiatic Vignas, viz., urdbean, mungbean, mothbean, ricebean and azukibean. In Haryana, the crop covered 28.5 thousand ha area with annual production of 19.6 thousand tonnes having productivity of 688 kg ha-1 in 2020-21. To prevent the perils of mono-cropping (paddy-wheat system) in the state, there is a need for deep transformation through inclusion of pulses like summer mungbean, in the existing cropping system. Hence, the present investigation critically examines the growth trends, economics and efficiency of resource use in summer mungbean cultivation in eastern zone of the state. Methods: This study uses both primary and secondary source of data. The primary data was collated from 80 summer mungbean growers using multi-stage random sampling technique. The secondary data was retrieved from various published and unpublished sources for a period of 30 years from 1991-92 to 2020-21. For measuring the growth trends and instability in the area, production and productivity of mungbean, compound annual growth rate (CAGR) and Cuddy-Della Valle index (CDVI) were computed. Simple budgeting technique was employed for calculating the economics of summer mungbean. For resource use efficiency, Cobb-Douglas production function was used. Result: The results show a positively significant growth rate in mungbean area, production and productivity but with irregular trends. The instability in mungbean production is more pronounced in Haryana than India and is mainly attributed to area instability, while it is because of productivity instability at the country level. The mungbean is a profitable enterprise in summer season as the net returns realized to the tune of ₹ 26024 ha-1 with benefit-cost ratio of 1.43 in the study area. Further, the efficiency of resourceuse in summer mungbean exhibits increasing returns to scale. Hence, the inclusion of mungbean cultivation in summer season is profitable.

Potassium augments growth, yield, nutrient content, and drought tolerance in mung bean (Vigna radiata L. Wilczek.)

Uneven rainfall and high temperature cause drought in tropical and subtropical regions which is a major challenge to cultivating summer mung bean. Potassium (K), a major essential nutrient of plants can alleviate water stress (WS) tolerance in plants. A field trial was executed under a rainout shelter with additional K fertilization including recommended K fertilizer (RKF) for relieving the harmful impact of drought in response to water use efficiency (WUE), growth, yield attributes, nutrient content, and yield of mung bean at the Regional Agricultural Research Station, BARI, Ishwardi, Pabna in two successive summer season of 2018 and 2019. Drought-tolerant genotype BMX-08010-2 (G1) and drought-susceptible cultivar BARI Mung-1 (G2) were grown by applying seven K fertilizer levels (KL) using a split-plot design with three replications, where mung bean genotypes were allotted in the main plots, and KL were assigned randomly in the sub-plots. A considerable variation was observed in the measured variables. Depending on the different applied KL and seed yield of mung bean, the water use efficiency (WUE) varied from 4.73 to 8.14 kg ha−1 mm−1. The treatment applying 125% more K with RKF (KL7) under WS gave the maximum WUE (8.14 kg ha−1 mm−1) obtaining a seed yield of 1093.60 kg ha−1. The treatment receiving only RKF under WS (KL2) provided the minimum WUE (4.73 kg ha−1 mm−1) attaining a seed yield of 825.17 kg ha−1. Results showed that various characteristics including nutrients (N, P, K, and S) content in stover and seed, total dry matter (TDM) in different growth stages, leaf area index (LAI), crop growth rate (CGR), root volume (RV), root density (RD), plant height, pod plant−1, pod length, seeds pod−1, seed weight, and seed yield in all pickings increased with increasing K levels, particularly noted with KL7. The highest grain yield (32.52%) was also obtained from KL7 compared to lower K with RKF. Overall, yield varied from 1410.37 kg ha−1 using 281 mm water (KL1; well-watered condition with RKF) to 825.17 kg ha−1 using 175 mm water (KL2). The results exhibited that the application of additional K improves the performance of all traits under WS conditions. Therefore, mung beans cultivating under WS requires additional K to diminish the negative effect of drought, and adequate use of K contributes to accomplishing sustainable productivity.

Effect of Pre- and Post-emergence Herbicide on Weed Growth and Productivity of Summer Mungbean (Vigna radiata)

The current study aimed to investigate at the Agronomy farm (Faridpur) K.N.I.P.S.S Sultanpur, Uttar Pradesh during kharif 2022-2023. The research was conducted in randomized complete block design (RCBD) with 8 treatments, viz. weedy check, one hand weeding at 15 DAS, hand weeding at 15 and 30 DAS, pendimethalin @ 0.75 kg a.i./ha as pre-emergence (W3), quizalofop-ethyl @ 60 g /ha (20 DAS), Imazethapyr @ 60 g /ha (20 DAS), pendimethalin (PE) fb imazathapyr (20 DAS), pendimethalin (PE) fb quizalofop ethyl (20 DAS). Among all the treatments, growth and yield attributes such as pods count/plant (38.17), seeds count pod-1 (8.66) and yield (12.89 q/ha) were obtained highest with hand weeding at 15 and 30 DAS. Furthermore, the concurrent use of pre- and post-emergence herbicides, demonstrated by combinations like pendimethalin (PE) followed by imazathapyr at 20 DAS and pendimethalin (PE) followed by quizalofop ethyl at 20 DAS, yielded outcomes similar to those achieved through manual weeding.

Effect of date of sowing and level of phosphorus on growth and yield of summer mungbean (Vigna radiata L.) in Red and Lateritic soils of West Bengal

A field experiment was conducted to study the effect of two sowing dates (16th March and 26th March) and five phosphorus levels (0, 20, 40, 60 and 80 kg P2 O5 / ha) in mungbean during pre-kharif (summer) season of 2022 at Instructional Farm of Seacom Skills University, Kendradangal, Birbhum, West Bengal, India. The research work revealed that growth parameters were significantly higher under 26th March sowing over 16th March. Among the P levels, higher dose of P improved growth parameters. In case of yield attributes maximum number of pods/plant (9.6), pod length (6.9 cm) and seeds/pod (10.3) were recorded in 26th March sown crop of mungbean. Maximum seed yield (705 kg/ ha) and stover yield (1609 kg/ha) also recorded in 26th March sowing. Different P dose showed significant variations for yield traits and maximum pods/plant (11.45), pod length (7.96 cm) and seeds/pod (11.23) recorded with 80 kg P2 O5 / ha. Highest seed yield (812 kg/ha) and stover yield (1710 kg/ha) were obtained with 80 kg P2 O5 /ha. The gross returns, net returns and benefit: cost ratio was maximum when the crop sown on 26th March with 80 kg P2 O5 /ha. Hence, mungbean sown on 26th March 2022 along with 80 kg P2 O5 /ha application could be more effective in augmenting growth, yield and economics in the red and lateritic soils of West Bengal.

Effect of foliar application of micronutrients on summer mungbean varieties on alluvial soil of West Bengal

A field experiment was carried out during the summer seasons of 2020 and 2021 at Jaguli Instructional Farm, BCKV, Nadia (West Bengal), in the Gangetic alluvial soil, to assess the effect of varieties and micronutrient foliar spray on growth parameters, yield components, yield and economics of mungbean. Results revealed that different varieties significantly promoted growth parameters and variety Meha was found to be superior. Growth parameters was significantly higher under molybdenum foliar spray over other micronutrients foliar spray. The maximum number of pods per plant, pod length, seeds per pod and test weight were found in plants receiving sodium molybdenum foliar spray at 0.05%. Maximum seed yield and stover yield were also recorded in the same treatment where 0.05% sodium molybdenum spraying was done at pre flowering and pod development stage. Variety showed significant variation in pods per plant, pod length, seeds per pod and test weight and were maximum in variety Meha. Both seed and stover yield were highest in case of variety Meha over others. The gross returns, net returns and benefit: cost ratio were maximum in Meha variety with foliar application of sodium molybdenum. Hence, variety Meha with foliar spray of molybdenum could be more effective in augmenting mungbean growth, yield and economics in the Gangetic plains of West Bengal in the summer season.

Erratum to: Assessing the Productivity and Water Use Efficiency of Two Summer Mungbean (Vigna radiata L.) Genotypes Grown Under Drought Stress Condition

Erratum to: Assessing the Productivity and Water Use Efficiency of Two Summer Mungbean (Vigna radiata L.) Genotypes Grown Under Drought Stress Condition

Comparison of Coloured Sticky Traps against Bean Flower Thrips (Karny) (Thysanoptera: Megalurothrips distalis Thripidae) in Summer Mung Bean

Comparison of Coloured Sticky Traps against Bean Flower Thrips (Karny) (Thysanoptera: Megalurothrips distalis Thripidae) in Summer Mung Bean

Evaluation of different insecticides against whitefly on summer mungbean

Evaluation of different insecticides against whitefly on summer mungbean

Impact of Long-Term Organic Manure Application on Yield, Zinc, and Copper Uptake in Maize, Peas, and Mungbean (Vigna radiata L.) Cropping System

To evaluate the impact of the long-term application of organic manures on yield, uptake of zinc and copper in maize, peas and summer mungbean cropping systems, a field study was conducted at the integrated farming system of Punjab Agricultural University, Ludhiana. The treatment combinations were; T1: 50% N through recommended NPK + 50% N was substituted through FYM, T2: 100% N through FYM, T3: T2 + intercropping (marigold in pea, cowpea in maize), T4: T2 + agronomic practices for weed and. pest control, T5: 50% N as FYM + rock phosphate to substitute the P requirement of crops + phosphate solubilizing bacterial. cultures (PSB), T6: T2 + biofertilizer (consortium) containing N and P carriers and T7: 100% Recommended NPK through chemical fertilizers. Significant increases in the yield, micronutrient content and uptake were recorded due to the application of 50% nitrogen through farmyard manure (FYM) and 50% of the recommended dose of fertilizers (T1) followed by 100% N through FYM + biofertilizer containing. N and P, carriers (T6). The highest grain yield of maize (5.72 t ha-1), pea (16.2 t ha-1) and summer mungbean (11.6 t ha-1) were recorded in treatment T1, surpassing the 100% recommended dose of fertilizer (T7) by 13.7%, 20% and 10.4 %, respectively. The concentration of copper (Cu) and zinc (Zn) in the grains of maize, pea and summer mung bean was 38.3%, 14.1%, 29.6% and 53.4%, 22.8 % and 19.8% higher in treatment T1 as compared to treatment T7. Moreover, the concentration of copper and zinc in the grains of maize, pea and summer mung bean was 32.1%, 24.2% and 29.5 % and 21.7%, 17.6% and 11.6% higher in treatment T1, respectively, compared to treatment T7. Similarly, the increase in the uptake of Cu and Zn was observed in both grain and straw of maize, pea and summer mung bean. The study concluded that the integrated nutrient management (INM) treatment is to substitute a portion of chemical fertilizers with a more sustainable and environmentally safe organic compost in order to mitigate soil degradation, improve crop production, and protect the environment.

Impact of Date of Sowing and Weather Parameters on Insect Pests Infesting Summer Mungbean

An experiment was conducted at Pulses Research Station, SDAU, Sardarkrushinagar during summer 2021 and 2022 to find out the insect pests attacking mungbean crop sowing at different dates to determine the optimum date(s) of sowing. It is seen that the incidence and population fluctuation of various insect pests was very much dependent on the prevailed climatic conditions of the cropping season. Study on the impact of date of sowing on sucking pests revealed that the sucking pest populations of whitefly, leafhopper and thrips were significantly high during the crop sown on February 15 and March 8 during both years, and high pod borer damage and low yield were also recorded on this date of sowing. Sucking pest population and percent pod borer damage were comparatively low on the date of sowing on February 26th, and the highest yield was also recorded on this date of sowing. The last week of February is advisable for sowing summer mungbean to get a higher yield and the lowest sucking pest and pod borer populations

Production potential of pulse-and oilseed-based climate-resilient alternative cropping systems for diversification of rice (Oryza sativa)–wheat (Triticum aestivum) in North-western Indo-Gangetic Plains

A field experiment was conducted during 2016–17, 2017–18 and 2018–19 at the Punjab Agrcultural University, Ludhiana, India, to evaluate the economic feasibility of pulse-and oilseed-based new alternative cropping systems in comparison to rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping system. Among the 10 cropping systems evaluated in a randomized block design on a loamy sand soil, the highest rice-equivalent yield (23.2 t/ha) was obtained in groundnut (Arachis hypogaea L.)–garden peas (Pisum sativum L.)–sunflower (Helianthus annuus L.) with highest sustainable- yield index (0.81), followed by groundnut –garden peas– spring maize (Zea mays L.) (22.5 t/ha) as significantly better than rest of the cropping systems. In comparison to conventional rice–wheat system, higher net returns as well as relative economic efficiency were recorded in 4 cropping systems, viz. groundnut–garden peas–sunflower, groundnut–garden peas–spring maize, rice–wheat–summer mungbean [Vigna radiata (L.) R. Wilczek] and mungbean–toria [Brassica rapa subsp. dichotoma (Roxb.) Hanelt]–sunflower. Maximum apparent water productivity was observed in pigeonpea [Cajanus cajan (L.) Millsp.]–chickpea (Cicer arietinum L.)– summer mungbean, whereas the maximum nutrient-use productivity was observed in groundnut–garden peas– sunflower, followed by pigeonpea–chickpea–summer mungbean and the least values were recorded in rice–wheat system. Thus, resource-conserving biointensive cropping systems, viz. groundnut–garden peas–sunflower, groundnut–garden peas–spring maize, rice–wheat–summer mungbean and mungbean–toria–sunflower can be adopted for higher productivity, profitability and sustainability.

Effect of Bio-Agent as Seed Treatment to Check the Initial Infection of Reniform Nematode, Rotylenchulus reniformis on Summer Mungbean (Vigna radiata L.)

Reniform nematode, Rotylenchulus reniformis received greater attention due to its polyphagous nature, cosmopolitan distribution and adaptability to different agro-ecological condition. It causes great losses to pulses including Mungbean (Singh, 2015). Therefore, an experiment was carried out to test the efficacy of botanicals to manage the reniform nematode infecting summer mungbean. Bioagents i.e. Metarhizium anisopliae and Beauveria bassiana were used at 5%, 10% and 15% as seed treatment. Trichoderma viride at 10% was kept as standard check. An untreated check was also maintained to compare the experimental findings. The experiment was conducted in completely randomized design with five replications. Results revealed that Metarhizium anisopliae at 15 % w/w as seed treatment significantly improve the plant growth parameters (44.81–77.21%) of summer mungbean followed by Beauveria bassiana at 15% (38.44-70.88%) and Metarhizium anisopliae at 10% (34.13–62.50%) as compared to untreated check. These treatments reduced the infestation of reniform nematode, R. reniformis on mungbean to the tune of 36.04-47.43%.

Water productivity of summer mungbean (Vigna radiata) in relation to irrigation, tillage and mulch in sandy loam and loamy sand soils

There is a growing interest among the farmers of the state to take an additional crop, i.e. summer mungbean (Vigna radiata L.) in the window period of rice (Oryza sativa L.)-wheat (Triticum aestivum L.) system with a little emphasis on the water productivity of summer mungbean. The present study was aimed to assess the water productivity of summer mungbean under differential irrigation regimes, tillage and mulch in sandy loam and loamy sand soils. A field experiment was conducted during the summer 2021 and 2022 with three irrigation regimes (based on irrigation water to PAN-E ratio of 0.75 (I0.75), 0.50 (I0.50), 0.25 (I0.25) in sandy loam and 0.8 (I0.8), 0.6 (I0.6) and 0.4 (I0.4) in loamy sand soils, two tillage systems, viz. deep tillage and conventional tillage; and two mulch rates (no mulch and application of rice straw mulch @6 t/ha). Irrigation regime, I0.75 and I0.8 resulted in higher crop biomass, however the seed yield and water productivity were highest under I0.50 and I0.6. Deep tillage with mulch resulted in higher seed yield and water productivity in comparison to conventional tillage with no mulch. Medium irrigated regime (I0.50 and I0.6) coupled with deep tillage and rice straw mulch was found to be effective in improving the seed yield of mung bean in loamy sand soils in north-west India.