Volume 5, No. 2 (December) 2020
1. VINAYA TARI*, PANDURANG PATIL AND KARTHIK KANNAN [Potential of Strychnos nux-vomica leaf extract against mango leafhopper (Idioscopus clypealis)]. Farm. Manage. 5 (2) : 71-74 (2020). Department of Environmental Science Ratnagiri Sub-centre, University of Mumbai Ratnagiri, 415639, Maharashtra, India *(e-mail : tarivinaya78@gmail.com)
ABSTRACT
Strychnos nux-vomica has already proved for its insecticidal activity. The present study was conducted with an attempt to check the insecticidal activity against mango leafhopper. Three different solvents were used for preparation of extracts of Strychnos nux-vomica viz., petroleum ether, ethanol and ethyl alcohol. Insecticidal activity shows significant results i.e. p<0.05. Least Significant Difference (LSD) showed statistically significant difference in mortality for petroleum ether and ethanol & petroleum ether and ethyl acetate. Strychnos nux-vomica has proven potential for its effectiveness against Idioscopus clypealis Leth. It will be beneficial for the agricultural sector.
2. R. A. BALIKAI* [Bio-efficacy of spiromesifen 240 SC against whitefly and mites in tomato (Lycopersicon esculentum)]. Farm. Manage. 5 (2) : 75-84 (2020). Department of Agricultural Entomology University of Agricultural Sciences, Dharwad-580 005, Karnataka, India *(e-mail : rabalikai@gmail.com)
ABSTRACT
The field experiments were carried out for two consecutive rabi/summer seasons of 2008-09 and 2009-10 at farmer’s fields near Agricultural Research Station, Sankeshwar, Belagavi district, Karnataka, India to study the bio-efficacy of spiromesifen 420 SC against the sucking pests of tomato and its safety to natural enemies. The treatments comprising of two sprays of spiromesifen 240 SC @ 150, 120 and 90 g a.i./ha afforded highest protection against mites and whiteflies over untreated check. All the insecticides recorded significantly higher fruit yield than the untreated check. Two sprays of spiromesifen 240 SC @ 150, 120 and 90 g a.i./ha produced higher fruit yield and were on par with three sprays of acephate 75 SP @ 375 g a.i./ha and four sprays of dicofol 18.5 EC @ 185 g a.i./ha. Hence, the lower dosage of spiromesifen 240 SC @ 90 g a.i./ha (two sprays starting from pest incidence at 21 days interval) could be recommended for the management of mites (Tetranychus urticae Koch) and whiteflies [Bemisia tabaci (Gennadius)] in tomato. Two sprays of spiromesifen 240 SC @ 90 or 120 or 150 g a.i./ha sustained higher population of coccinellid beetles per plant compared to three sprays of acephate 75 SP @ 375 g a.i./ha and four sprays of dicofol 18.5 EC @ 185 g a.i./ha. None of the insecticidal treatments showed any type of phytotoxic symptoms on tomato plants at 1, 3, 7, 10 and 15 days after spray at the dosages tried viz., spiromesifen 240 SC @ 150 g a.i./ha, spiromesifen 240 SC @ 300 g a.i./ha and spiromesifen 240 SC @ 600 g a.i./ha.
3. AKASH BISWAS, MOHAMMED ARIF SADIK POLASH**, MD. MASUDUL KARIM, MD. ARIF SAKIL, SHAGATA ISLAM SHORNA AND MD. ALAMGIR HOSSAIN* [Effect of different planting methods on growth and yield of chia (Salvia hispanica)]. Farm. Manage. 5 (2) : 85-90 (2020). Plant Physiology Lab, Department of Crop Botany Bangladesh Agricultural University, Mymensingh, Bangladesh *(e-mail : alamgir.cbot@bau.edu.bd; **arifsadik@kau.edu.bd)
ABSTRACT
Planting method is an important practice for better plant growth and yield performance of chia (Salvia hispanica), a newly introduced crop in Bangladesh. The present experiment was conducted during 2017 and 2018 at Bangladesh Agricultural University, Mymensingh, Bangladesh to study the effects of different planting methods on growth and yield of chia and thereby to find out the suitable methods of planting for commercial cultivation. Three planting methods viz., zero tillage, broadcasting and transplanting were evaluated laid out in Randomized Completely Block Design (RCBD) with three replications. Results revealed that higher yield in broadcasting method among the treatments and this finding suggests that broadcasting method is better for commercial chia production in Bangladesh.
4. BIDISHA MONDAL*, R. SAHA AND A. SAMANTA [Post-Amphan management and rejuvenation of the ravaged betel (Piper betle) baroj in South Bengal]. Farm. Manage. 5 (2) : 91-100 (2020). School of Agriculture and Allied Sciences The Neotia University, Jhinger Pole Diamond Harbour Rd, Sarisha-743368, West Bengal, India *(e-mail : bidisha.mondal@tnu.in)
ABSTRACT
Betel cultivation is very popular in West Bengal. The spread of COVID-19 affected betel cultivation but super cyclone ‘amphan’ devastated the majority of betel orchards of Bengal. The betel cultivation also fetches significant foreign exchange through export. The present investigation was conducted on 51 representative betel farmers of Fingha Dhaowri village under Raskhali panchayat of Bishnupur Block I of South 24 Parganas. The farmers were interviewed in mediated approach using semi-structured open-ended questionnaire, advocating participatory rural appraisal (PRA) mode. The study revealed some important enjoinder for furtherance of cultivation. In Bishnupur block of South 24 Parganas, 359 out of 360 barejas were reconstructed. The construction of a baroj measuring 10 decimal costs between Rs. 0.8 to 1.5 lakh including first year maintenance. The farmers prefer traditional baroj over shade-net structure. The farmers got assistance from Krishak Bandhu Krishi Sahayak scheme of state and Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGS) in addition to state government disaster relief fund. In new construction, farmers followed good agricultural practises along with COVID advisory with female farmers participation upto 60%. Harvesting is resumed and the farmers of focal group are selling 100 leaves pack @ Rs. 50/- with a 68% loss. The study revealed lack of knowledge of the farmers about post-harvest management but techniques could be adopted by them if the profitability aspects are discussed properly. The low input organic farming is advantageous to start export though the selected farmers sell leaves in domestic market only. The post-amphan betel cultivation could be directed to a positive path and rejuvenation of the baroj may be possible if the farmers’ adopt organic farming, apply low cost scientific management practices and industrial skill development in a community based approach. The holistic implementation of this smart package in betel farming may uplift the rural economy of Bengal.
5. VEDPAL SINGH* AND RATIKANTA MAITI [Anatomical research for genetic improvement of bast and fibre crops : A mini review]. Farm. Manage. 5 (2) : 101-107 (2020). Gaurav Publications (Regd.), Systematic Printers Udayapuria Street, Near Video Market, Hisar-125 001 (Haryana), India *(e-mail : cropresearch1@gmail.com)
ABSTRACT
The paper discusses the utility of anatomical structure of the vegetable fibres for the selection and possible genetic improvement of some world fibre crops, mainly bast and leaf fibres. Anatomical structures such as fibre bundle dimensions, surface regularity, fineness, length and breadth of ultimate fibre cells are related to quality performance of fibre crops. On the basis of literature review the authors suggest strongly that anatomical structures of fibres could play an important tool in the genetic improvement of both the quality and yield of world fibre crops. Therefore, concerted research activities should be directed in this direction.
6. VEDPAL SINGH* AND R. K. MAITI [A review on in-vitro micropropagation of agave and other plants]. Farm. Manage. 5 (2) : 108-114 (2020). Gaurav Publications (Regd.), Systematic Printers Udayapuria Street, Near Video Market, Hisar-125 001 (Haryana), India *(e-mail : cropresearch1@gmail.com)
ABSTRACT
This article gives a brief review on research progress on the use of tissue culture in the micropropagation of agaves and a few economic plants. Fragments of leaf meristem, rhizomes, meristematic apex, root and excised embryo are used as explants in MS medium. Techniques used in the micropropagation of several species of Agave gave promising results. In vitro propagation is extensively used for propagation of Agave spp. and native plant species in some established centers in some countries. In vitro somatic embryogenesis is considered as an important pre-requisite for genetic improvement, as well as for mass propagation. The asceptic mass production of callus is efficiently used in the extraction of secondary metabolites of medicinal use. The technique is recommended specially for the propagation of perennial native economic plant species like Agave which takes more than eight years to reach reproductive stages and produces seeds. The massive production of micropropagated native plants could be effectively used in the reforestation of the species in their natural habitats.
*******************************