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  • Defence Scientific Information and Documentation Centre  (15)
  • 1
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2020
    In:  Defence Life Science Journal Vol. 5, No. 3 ( 2020-07-22), p. 192-197
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 5, No. 3 ( 2020-07-22), p. 192-197
    Abstract: Traditionally cauliflower is not grown during winter months in the trans-Himalayan Ladakh region due to sub-zero degree celsius at night. Accordingly, the feasibility of growing cauliflower, a temperature-sensitive crop, was studied during winter months in a passive solar greenhouse in the high altitude (elevation 3340 m) trans-Himalayan Ladakh region. Studies were conducted during 2017-2020 with three commercial varieties. Curd was formed in all the varieties despite the temperature extremes (0.0±1.6 to 39.5±0.9 ºC) in the greenhouse. Harvesting was done in the month of February. The mean marketable curd weight ranged from 258±113 to 743±62 g depending on variety and year, which suggested that cauliflower can be successfully grown during winter months in the trans-Himalaya. However, the marketable curd weight was significantly lower as compared to the yield potential of the varieties. High temperature inside the greenhouse resulted in the occurrence of fuzziness, and it ranged from 0-35% of the harvested curd depending on the year and variety. Fuzziness was not observed in cv Shentha while 10.4-35% of cv Amazing exhibited fuzziness.
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2020
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  • 2
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2019
    In:  Defence Life Science Journal Vol. 4, No. 2 ( 2019-04-11), p. 103-116
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 4, No. 2 ( 2019-04-11), p. 103-116
    Abstract: The trans-Himalayan Ladakh region remains cut-off for over six months in a year due to heavy snowfall. Availability of locally grown fresh vegetables is restricted to summer months and therefore, there are seasonal differences in dietary intake of food. Passive solar greenhouse has played a significant role not only in production of leafy vegetables in sub-zero temperature during winter months but also helped in extending the growing season in Ladakh. It is now a common practice to raise vegetable nurseries in spring and grow leafy vegetables during winter months in the greenhouse. Each year an average of 733 greenhouses covering 44313.4 m2 area are being established in Leh district. Passive solar greenhouse structures such as Ladakhi greenhouse, trench, polytrench, polyench, polycarbonate, FRP and polynet have been designed and tested in the inhospitable environment of trans–Himalaya. The greenhouse is used mainly during winter, and majority of farmers (91.7 %) do not use the structures in summer. Insect-pest, irrigation in winter and frequent replacement of cladding materials are the major problems being faced by the farmers in the region. There is a need to improvise the greenhouse design to make it economically viable and technologically feasible to grow a variety of crops, especially during winter months.
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2019
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  • 3
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2020
    In:  Defence Life Science Journal Vol. 5, No. 4 ( 2020-10-15), p. 292-298
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 5, No. 4 ( 2020-10-15), p. 292-298
    Abstract: Greenhouse experiments were conducted in three seasons (2017-18, 2018-19, 2019-20) to study the feasibility to grow cabbage, a temperature sensitive crop, during freezing winter months at high altitude (elevation 3340 m) trans-Himalayan Ladakh region. Three varieties viz. Golden Acre, Videshi and Megaton were studied under an improvised passive solar greenhouse. Head was formed in all the varieties despite the temperature extremes (0.0±1.6 to 39.5±0.9 ºC) inside the greenhouse. The mean marketable head weight ranged from 428.6±72.1 g to 831.2±193.0 g, depending on the variety. The mean head weight of Golden Acre was 831 g, which is 15-fold higher as compared to that of the crop grown under traditional greenhouse in Ladakh. However, the marketable head weight was lower as compared to the yield potential of the varieties. It took 133-163 days for Golden Acre to reach maturity for harvest as compared to the expected 60-65 days. Dramatic declines in intercellular CO2 concentration, photosynthesis rate and water-use efficiency were observed at 2:00 PM, which indicated that the plants were severely affected by high temperatures inside the greenhouse. High temperature inside the greenhouse resulted in bolting, head-splitting and loose head forming, and it ranged from 8-36% of the crop depending on the year and variety. The study suggested that cabbage can be successfully grown under improvised passive solar greenhouse during severe winter months in the trans-Himalayan Ladakh.
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2020
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  • 4
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2020
    In:  Defence Life Science Journal Vol. 5, No. 1 ( 2020-02-19), p. 18-24
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 5, No. 1 ( 2020-02-19), p. 18-24
    Abstract: Consumer concern about poor taste of fresh apricots is increasing and knowledge about the more suitable production requirement is essential. Genetic component influencing apricots quality is well known. However, there is limited information on environmental effect on fruit quality. This study aims to evaluate influence of altitude on phenological and fruit quality characters of apricot genotypes. Fruits from 162 genotype were collected from nine locations from 3006-3346 m asl in trans-Himalaya. The altitude had a marked influence on date of flowering, fruit weight, moisture and TSS content. For every 100 m increase in altitude, flowering and fruit ripening delayed by 3.3 and 7.1 day, respectively. Inverse relationship between altitude and fruit weight (R2=0.310) was observed. For every 100 m increase in altitude the fruit weight decrease by 0.5 g. Fruit moisture content decreased significantly with increase in elevation (R2=0.585). Decrease in moisture content was 1.9% for every 100 m increase in elevation. Altitude showed linear relationship with fruit TSS content (R2=0.726). For every 100 m increase in altitude, the fruit TSS increased by 1.2ºBrix. Knowledge from the present study on the impact of altitude on fruit quality characters provides a useful guide for selecting orchard location towards improving fruit quality
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2020
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  • 5
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2017
    In:  Defence Life Science Journal Vol. 2, No. 1 ( 2017-03-29), p. 46-
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 2, No. 1 ( 2017-03-29), p. 46-
    Abstract: 〈 p 〉 Seabuckthorn (SBT) is an ecologically and economically important plant species of trans-Himalayan Ladakh. Once considered a thorny menace, SBT is now looked upon as a means for sustainable development of the trans-Himalayan region. Several antioxidant rich SBT-based products are being developed and commercialized. SBT berry collection from natural habitat has become an important activity in the region since the year 2001. Currently, the demand for SBT exceeds the supply capacity of the region. Cultivation of SBT on 2500 ha would result in annual net income of Rs 491 crore. Anticipating the high demand for SBT, studies are underway to meet the long term goal to introduce plantation of SBT on vast barren land. Potential of the lesser-known shrub has been recognized by several R & amp;D organizations. In recent years a number of research institutes in India are working on the lesser known shrub. This article summarizes the advancement of research on SBT of trans-Himalayan Ladakh origin. 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2017
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  • 6
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2017
    In:  Defence Life Science Journal Vol. 3, No. 1 ( 2017-12-15), p. 75-
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 3, No. 1 ( 2017-12-15), p. 75-
    Abstract: 〈 p 〉 The effect of plastic mulching, coloured shade netting, spacing and cutting thickness on rooting success and growth of Seabuckthorn (Hippophae rhamnoides L.) through hard wood cuttings is addressed. Use of silver black plastic mulching film resulted in 10 per cent higher rooting success and significant plant growth. Suppression of weed emergence by the plastic mulch resulted in 75.8 per cent time saving in manual weeding by farm workers. No significant gender difference in rooting success was observed. Reduction in light intensity by 66 per cent using green shade net resulted in significant reduction in rooting and growth of nursery plants. Three different spacing between cuttings did not show significant difference in rooting and growth related parameters suggesting that cuttings can be planted denser (3"×3") under mulching to get higher number of nursery stock per unit area. Cutting thickness showed significant effect on rooting success. Highest rooting percentage was observed in pencil thickness cuttings (7.5 ± 1.6 mm dia) followed by cuttings with 2.9 ± 0.8 mm and 11.3 ± 1.7 mm basal diameter. The result of the present study could facilitate establishment of a vegetative propagation method wherein faster growth and larger number of cuttings can be propagated with higher rooting success rate. 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2017
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  • 7
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2018
    In:  Defence Life Science Journal Vol. 3, No. 2 ( 2018-03-23), p. 105-
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 3, No. 2 ( 2018-03-23), p. 105-
    Abstract: 〈 p 〉 〈 em 〉 Pseudomonas simiae 〈 /em 〉 isolated from Seabuckthorn rhizosphere solubilized insoluble phosphate at 4-40ºC, pH 4-12 and in presence of 1-5% salt concentration. The optimum condition was observed at 28ºC, pH 6 and devoid of any salt stress. Ca 〈 sub 〉 3 〈 /sub 〉 (PO 〈 sub 〉 4 〈 /sub 〉 ) 〈 sub 〉 2 〈 /sub 〉 was solubilized to a great extent than FePO 〈 sub 〉 4 〈 /sub 〉 and AlPO 〈 sub 〉 4 〈 /sub 〉 . The isolate possess plant growth promoting attributes such as IAA (32 mg l 〈 sup 〉 -1 〈 /sup 〉 ), siderophore (78%) and HCN (0.1 OD at A 〈 sub 〉 625 〈 /sub 〉 ) production. Seed bacterization resulted in 30% and 51% enhanced shoot and root length, respectively in tomato seedling. Pot experiments revealed enhanced plant growth in 〈 em 〉 P. simiae 〈 /em 〉 treated plants in both green shade net and open field conditions. Fruit yield was 9.8% and 19.8% higher over control in open and shade net condition, respectively.  〈 strong 〉 〈 /strong 〉 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2018
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  • 8
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2017
    In:  Defence Life Science Journal Vol. 3, No. 1 ( 2017-12-15), p. 85-
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 3, No. 1 ( 2017-12-15), p. 85-
    Abstract: 〈 p 〉 The high altitude trans-Himalayan Ladakh region remains cut-off for over six months in a year due to heavy snowfall. Long harsh winters reduce the cropping season to just four to five months in a year. Single-cropping is dominant and agriculture production is entirely based on irrigation. The average land holding is small and emphasis has been on minimal use of off-farm inputs. Meeting the fresh vegetable requirement of the burgeoning local population, defence forces and the incoming tourists in this remote mountainous area is a formidable challenge.Very few vegetable types were traditionally grown in Ladakh. Significant progress has been made since 1960s in promoting vegetable cultivation in the region. The vegetable production scenario and consumption choices have undergone drastic changes, compared to what was available some decades back. Agro-techniques and vegetable production calendar in Ladakh differs from lowland parts of the country. Vegetable farms are smaller with an average 0.2 acre. The area of vegetable production constitutes 5.5 per cent of the total 10,319 hectares of agricultural land in Leh district. The widely grown vegetables were potato (75.6 per cent), peas (10.7 per cent), onion (3.4 per cent), cabbage (3.3 per cent), carrot (2.0 per cent) and cauliflower (1.8 per cent). Preference for potato, onion, cabbage and carrot was largely contributed to the desired long term storage capacity for consumption during the landlocked winter months. Supply to the army and tourism industry is the major factor for rapid transformation of vegetable production in the region. Critical areas that need focused attention include technology for vegetable production in winter months, post harvest management, seed production, organic certification, area expansion, harnessing niches and building stronger linkages between growers and consumers. 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2017
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  • 9
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2017
    In:  Defence Life Science Journal Vol. 2, No. 1 ( 2017-03-29), p. 54-
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 2, No. 1 ( 2017-03-29), p. 54-
    Abstract: 〈 p 〉 Trench greenhouse is a low cost underground rectangular structure (30’×10’×3’; L×W×D) in north-south orientation with stone wall on four sides. It is covered with polyethylene sheet at ground level during winter months. The air temperature inside the trench was found to be 20.7±2.8 °C warmer during day and 7.0±1.2 °C at night that support growing of leafy vegetables during winter (mid October to early March). Three cycles of crops were grown in a year in the greenhouses as against single crop in open field condition in cold trans-Himalayan Ladakh region. Spinach production was 64 kg -70 kg per trench during mid October to early March. Black plastic mulch significantly increased spinach production during winter months. Vegetable seedlings (13,000 to 39,000 numbers per trench) were raised during late March to early May, which is not possible in open field condition otherwise. A variety of warm-season vegetables were harvested (6 kg - 210 kg per trench) from the trenches during summer months. 〈 /p 〉
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2017
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  • 10
    Online Resource
    Online Resource
    Defence Scientific Information and Documentation Centre ; 2021
    In:  Defence Life Science Journal Vol. 6, No. 1 ( 2021-02-23), p. 64-69
    In: Defence Life Science Journal, Defence Scientific Information and Documentation Centre, Vol. 6, No. 1 ( 2021-02-23), p. 64-69
    Abstract: Seven local apple cultivars of the trans-Himalayan Ladakh region were studied for phenological and pomological characteristics. Early and extended flowering was observed. Flowering began 12 days earlier as compared to Royal Delicious, a popular introduced cultivar. The cultivars attained fruit maturity between mid-August to early September, which is one month earlier than Royal Delicious. Apples of the Ladakh region are soft (6.1±1.1 kg cm-2) and small in size (60.1±29.1 g). The unique characteristics observed in apples of the Ladakh region, such as early flowering and early fruit maturity offer an opportunity for exploring the native cultivars for future breeding programs for the development of early maturing cultivars.
    Type of Medium: Online Resource
    ISSN: 2456-0537 , 2456-379X
    Language: Unknown
    Publisher: Defence Scientific Information and Documentation Centre
    Publication Date: 2021
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