Papers by USHA NANDHINI DEVI H
International Journal of Environment and Climate Change, Mar 5, 2024
Urban Horticulture is a key solution to rapid population growth, urbanization, food crisis and cl... more Urban Horticulture is a key solution to rapid population growth, urbanization, food crisis and climate change. According to FAO reports, projections indicate that by 2050, the global urban population will exceed 9.7 billion, nearly doubling the current 3.5 billion. In the case of India, UN World Population Prospects foresee that by 2050, 40.76% of the country's population will inhabit urban areas. Considering the above statistics, we can estimate the burden on rural production system to meet increasing demands of fruits and vegetables in urban markets. So, urban horticulture could be the saviour to avoid food crisis and inflation of market. Urban horticulture, with its roots dating back to the mid-19th century, has gained momentum worldwide and can potentially mitigate the looming threats of food crises and market inflation. There are various types of urban agriculture like, kitchen gardening, rooftop gardening, vertical farming, container gardening, etc. Multiple auras of crops can be cultivated in the minimal available space, right from herbs, vegetables and fruits to aromatic and medicinal plants. There are considerable number of advantages of urban farming, like, providing employment and daily wages to poor farmers, educating children, strengthening the community,
International Journal of Enviornment and Climate Change, Aug 30, 2023
Vegetable Science, Dec 25, 2022
The Pharma Innovation Journal, 2021
The present investigation was carried out to study the effect of integrated weed management on th... more The present investigation was carried out to study the effect of integrated weed management on the seed growth parameters of cucumber. The study was conducted at the
International Journal of Chemical Studies, 2019
Aquaponics is a form of agriculture that combines raising fish in tanks (recirculating aquacultur... more Aquaponics is a form of agriculture that combines raising fish in tanks (recirculating aquaculture) with soilless plant culture (hydroponics). In aquaponics, the nutrient-rich water from raising fish provides a natural fertilizer for the plants and the plants help to purify the water for the fish. Aquaponics can be used to sustainably raise fresh fish and vegetables for a family, to feed a village or to generate profit in a commercial farming venture, year round, in any climate. This paper discusses the applications of aquaponics, biological components, designs, maintenance and care of fish, cultivation of vegetables and companies involved in aquaponics.
International Journal of Environment and Climate Change
Carrot is an important root vegetable which plays an important role in human health. Globally, Po... more Carrot is an important root vegetable which plays an important role in human health. Globally, Post harvest diseases are the major constraint in carrot production, especially soft rot which resulting in severe yield loss. Early diagnosis of these post-harvest diseases paves a way for reducing the economic losses. Carrot samples showing typical rotting symptoms were collected from markets of four different districts of Tamil Nadu and the pathogen involved were isolated. Severe carrot soft rot incidence (66.74%) was observed in samples collected from Ooty area of The Nilgiris district and the least disease incidence of (16.21%) was recorded in Perundurai of Erode district. Pathogenicity of soft rot pathogen were conducted and the virulent isolates were identified based on Percent Disease Index (PDI) showing >50% rotting falls under disease grade 9 using disease grade scale (0 to 9). The bacterial isolates (KPB-7 and OCB-5) causing soft rot were characterized using various biochemic...
International Journal of Environment and Climate Change
Cluster bean is a multipurpose legume crop grown in arid and semiarid regions for feed, fodder, a... more Cluster bean is a multipurpose legume crop grown in arid and semiarid regions for feed, fodder, and vegetable purpose. In the present study, seven genotypes of cluster bean were evaluated to estimate vegetable pod yield and guar gum properties under Coimbatore conditions. The experiment was laid out in Randomized Block Design with five replications. Observation on 14 characters viz., plant height (cm), days to first flowering, days to 50% flowering, number of flower cluster per plant, number of pods per cluster, number of pods per plant, pod length (cm), fresh pod weight (g), dry pod weight (g), fresh pod yield per plant (g), dry pod yield per plant (g), seed yield per plant (g), guar gum in seed (%) and protein content in seed (%) were recorded. The results of present investigation showed that CT CBE 002 outperformed all other genotypes studied in terms of plant height (156.34 cm), total number of clusters (16.44.), number of pods per cluster (6.78), number of pods per plant (99.64...
International Journal of Plant & Soil Science
Experiments were carried out to study the effect of chemicals in breaking the dormancy of cucumbe... more Experiments were carried out to study the effect of chemicals in breaking the dormancy of cucumber. The study was conducted at the Department of Vegetable Science, Horticultural College and Research Institute, Coimbatore during 2017-2018. The seeds of cucumber variety Poinsett were treated with various chemicals immediately after harvest to standardize the best dormancy breaking treatment. The design of the experiment was Factorial Randomised Block Design with two replications. The seeds were treated with the chemicals for 12 hrs and 24 hours duration. The germination test was conducted. Observations on seed and seedling quality parameters viz., speed of germination, and germination percent, vigor index I and vigor index II were recorded. At 12 hours duration, the highest speed of germination (23.29) was recorded in T2 (GA3150 ppm) whereas the highest germination percentage (92) was recorded in T8 (Ethrel150 ppm). At 24 hours duration, the highest speed of germination (30.77) and th...
International Journal of Environment and Climate Change
Aim: The growing concern for environmental safety and the demand for pesticide residue –free food... more Aim: The growing concern for environmental safety and the demand for pesticide residue –free food worldwide have evoked interest in pest management through the use of botanicals, which offers a good alternative to manage the insect pests in an eco-friendly manner. This research was carried out to study the efficiency of botanicals on the aphid population in lablab under organic production system. Study Design: The study was carried out in Randomized Block Design (RBD) with eight treatments and three replications. Place and Duration of Study: The study was carried out at College Orchard, Department of Vegetable Science, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during 2021 - 2022. Methodology: The study was performed using chilli extract with three concentrations (2.5, 5.0 and 7.5%) and compared with other botanicals such as neem oil, neem seed kernel extract, garlic extract and panchagavya. The aphid population was counted visually...
The Pharma Innovation Journal, 2021
A field experiment was conducted to assess the interference and suppression of sweet potato genot... more A field experiment was conducted to assess the interference and suppression of sweet potato genotypes on the weed population in the coconut ecosystem as a cover crop in the basin of the tree. The study was conducted in the College Orchard, Coconut Farm,
Recent Progress in Plant and Soil Research Vol. 5, 2022
INTERNATIONAL JOURNAL OF PLANT PROTECTION, 2020
Colletotrichum species is considered as amajor fungal pathogen that can cause economic damage in ... more Colletotrichum species is considered as amajor fungal pathogen that can cause economic damage in commercial chilli production because of its ability to infect fruits both at pre- and post-harvest stages. Results obtained from the Fourier transform near-infrared spectrophotometer in chilli genotypes indicated that, there is a significant difference among the chilli genotypes for both quantitative and qualitative traits. Furthermore, capsaicin and oleoresin contents have a significant linear relationship with resistance to anthracnose at red fruit stage. Incidentally, chilli genotypes that are moderately resistant to anthracnose were significantly superior in capsaicin and oleoresin contents and fruit yield. Hence, capsaicin and oleoresin content can be used as an indirect method to predict anthracnose resistance in chilli breeding.
Journal of Pharmacognosy and Phytochemistry, 2019
The field experiment was carried out in June 2018 to October 2018. Fifty-nine (59) genotypes were... more The field experiment was carried out in June 2018 to October 2018. Fifty-nine (59) genotypes were studied for seven (7) different characters using Randomized Block Design with two replications. All the genotypes showed significant difference for all the characters. However, the maximum plant height was observed in genotype Sankaran kovil local (75.43 cm), maximum number of branches per plant was observed in CA-45 (14.02), maximum number of fruits per plant was observed in CA-7 (128.71 / plant), maximum fruit length was observed in M-106 (15.14 cm), maximum fruit girth was observed in Ramnad local (2.31 cm), maximum single fruit weight was observed in M-106 (17.88 g/ fruit) and maximum fresh fruit yield was observed in CA-7 (369.24 g/ plant) followed by CA-116 (356.03 g/ plant) and F-410 (342.56 g per plant), while, the minimum fresh fruit yield was observed in Sankaran kovil local (37.46 g/ plant) though it was found to be the tallest plant among all. Among the fifty-nine genotypes ...
International Journal of Plant & Soil Science, 2021
Grafting technology in vegetable crops is becoming increasingly popular as an alternative tool to... more Grafting technology in vegetable crops is becoming increasingly popular as an alternative tool to improve the biotic and abiotic resistance besides improvement in horticultural traits. By utilizing the right combination of resistant rootstock and scion, desired variability can be achieved to improve the yield and quality of vegetables. A study was conducted at the College orchard, Department of Vegetable science, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore during the year 2020-2021 to evaluate the graft compatibility with two chilli rootstocks. The experimental material consisted of two perennial rootstocks viz., CC-CBE-001 and CF-CBE-007 and three scion materials viz., TNAU Chilli Hybrid CO 1, Ranga hybrid and Bangaram hybrid. Wedge grafting was done using 60 days old rootstock and 45 days old scion seedlings with nine treatments. The adhesion line wall thickness of pith cells were determined at different stages after grafting. The w...
International Journal of Plant & Soil Science, 2021
A study was carried out at the Department of Vegetable Science, Horticultural College and Researc... more A study was carried out at the Department of Vegetable Science, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu,India during 2019-2020 to assess the anatomical and histological changes within the graft union of tomato and identify compatible rootstocks for improved propagation of the crop. This experiment involved rootstocks of three wild tomatoes including Solanum torvum, S. sisymbrifolium and S. capsicoides and scions of two tomato hybrids including TNAU tomato hybrid CO3 and Shivam. The grafting was done using the cleft grafting method. The anatomical and histological sections of six graft combinations and two tomato scion samples were viewed microscopically at 7, 14 and 21 days after grafting (DAG). Among the six tomato graft combinations, S. torvum rootstock showed complete development of vascular connection at 21 DAG followed by S. sisymbrifolium rootstock, whereas S. capsicoides rootstock showed only callus growth at 14...
INTERNATIONAL JOURNAL OF PLANT SCIENCES, 2020
Anthracnose caused by complex of Colletotrichum species is an economically important disease of c... more Anthracnose caused by complex of Colletotrichum species is an economically important disease of chilli. The study involved 132 genotypes grown under field conditions. Among the genotypes evaluated, fifteen genotypes were moderately resistant to anthracnose with fairly high yield. In the order of merit, the genotypes were CA 177 (10.74%), Paramakudi 1 (16.64%), F 507 (17.17%), Bird’s eye chilli (17.85%), Kadaladi 1 (19.70%), Ramnad local (20.64%), CO 1 (20.82%), TA/CA/ 10 (21.56%), CA 166 (21.94%), CA 188 (22.29%), Paramakudi 2 (22.45%), CA 13/6 (23.42%), Chilli CO hybrid 1 (24.36%), IC 342465 (24.68%) and CA 165 (25.70%). whereas, 40 genotypes were susceptible with PDI ranging from 26.30 to 50.69 per cent and majority of the genotypes (77nos) were found to be highly susceptible to anthracnose with per cent disease index ranging from 51.81 to 96.42 per cent. The moderately resistant genotypes identified in the present investigation will serve as donors or source of resistance for ant...
Electronic Journal of Plant Breeding, 2019
Mahalanobis D 2 statistics was used to study the genetic divergence for 12 characters among 30 ge... more Mahalanobis D 2 statistics was used to study the genetic divergence for 12 characters among 30 genotypes of Indian bean. Genotypes were grouped into four clusters on the basis of relative magnitude of D 2 values. The maximum inter cluster distance was observed between cluster III and IV (86.42) followed by cluster IV and cluster I (69.74). Maximum intra cluster distance was exhibited in cluster I (27.91) followed by cluster II (22.58). The mean value for most of the traits was maximum in cluster IV. Among the yield contributing characters, the maximum contribution towards divergence was made by pod length (34.25), average pod weight (31.26), pod yield per plant (21.15). Maximum D 2 values between cluster III (3 genotypes) and cluster IV (1 genotype) followed by cluster I (19 genotypes) and IV (1 genotype) indicated that the genotypes included in these clusters may give useful superior recombinants with desirable traits in segregating generations.
Journal of Horticultural Science, 2016
Experiments were carried out during 2000-2003 at the Department of Spices and Plantation Crops, H... more Experiments were carried out during 2000-2003 at the Department of Spices and Plantation Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, to assess the impact of gamma irradiation on days to maturity, yield and curing per cent in turmeric ( Curcuma longa L.). The experiment was laid out in Factorial Randomized Block Design with two replications. Three genotypes namely, Salem Local - G 1 (CL144), Alleppy finger turmeric - G2 (CL146) and PTS 43 - G 3 (CL147) were treated with seven doses of gamma rays (1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 kR) along with control. The plants matured earlier and yield per plant and curing percentage improved at 2.0 kR, followed by 2.5 kR, whereas, higher doses of gamma rays had a negative effect on yield and curing percentage and these higher doses prolonged maturity. Among the genotypes used, G 1 (CL144) was found to show a good response to gamma irradiation.
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Papers by USHA NANDHINI DEVI H