Dr. Abu Manzar - Academia.edu (original) (raw)

Papers by Dr. Abu Manzar

Journal of Experimental Zoology, India, Nov 15, 2022

bioRxiv (Cold Spring Harbor Laboratory), Dec 2, 2022

Seed priming improves seed performance under environmental conditions. The study was designed to ... more Seed priming improves seed performance under environmental conditions. The study was designed to evaluate the effect of different priming treatments on the germination behaviour of Honesty (Lunaria annua L.). The experiment was conducted under a complete randomized design (CRD) with three replications. Seed priming was done with different concentrations of calcium chloride (CaCl 2), potassium nitrate (KNO3) and hydro priming. All the treatments except T 1 (Control) had a significant effect on seedling establishment and seedling vigour, Results show that maximum invigoration was observed in seeds primed at 1% KNO3 while minimum invigoration was observed in T 1 (Control). It was concluded that the germination percentage could be increased by using lower concentrations of KNO3 and CaCl 2 .

Study revealed that under monocropping (saffron as sole)/intercropping farming system (saffron in... more Study revealed that under monocropping (saffron as sole)/intercropping farming system (saffron intercropped with almond/apple/pear) plantation of graded saffron corms (>8 g) in September with initial corm treatment with fungicidal suspension (carbendizime at 0.01% + Mancozeb at 0.03%) or corm dressing with Trichoderma viridae at 4 g kg-1 of seed with initial spore load adjusted to 2×10 7 spores m-1 supplemented with neem cake at 1.0 t ha-1 on raised beds at 1 corm hill-1 with a planting geometry of 20×10 cm or 2 corms hill-1 with a planting geometry of 25×15 cm supplemented with FYM at 10 tons ha-1 in combination with N:P:K at 90:60:50 kg ha-1 and vermicompost at 0.5 t ha-1 or FYM at 30 t ha-1 in combination with N:P:K at 30:20:15 kg ha-1 , vermicompost at 0.25 t ha-1 together with Azatobactor ensures average saffron/corm productivity of 6.37 kg ha-1 and 15.0 t ha-1 , respectively over 4 years planting cycle. Fumigation of live reopened burrows with aluminum phosphide pellets at 2 pellets burrow-1 or 3 g aluminum phosphide pouch (56% poison)/ burrow ensures rodent control. Integrated production system capsule ensures returns to the tune of Rs. 4,635,000 and Rs. 810,000 respectively on account of sale of 25.5 kg of saffron and 60 quintals of saffron corms with a B:C ratio of 3.99:1.

Crop Protection, 2007

Pest fruit flies (Diptera: Tephritidae) may be managed more efficiently at village level than at ... more Pest fruit flies (Diptera: Tephritidae) may be managed more efficiently at village level than at farm level, particularly as two management methods-bait application technique (BAT) and male annihilation technique (MAT)-rely on attractants which have less effect on flies whose needs have been met (fed males and females in the case of BAT, mated females in the case of MAT), and so ''satiated immigrants'' may be unaffected by controls and invade treated areas. This study compared and evaluated these controls against fruit flies used at the levels of the farm and of the village (taken to be 1 km 2) at a variety of sites. Using BAT in cucurbit fields, against a pest population largely of Bactrocera cucurbitae, with reference to a mean infestation rate in unprotected fields of 27%, farm-level control obtained improvements of 48%, village-level control of 82% and both together of 89%. Using MAT in fruit orchards, against a guild of fly pests largely responsive to methyl eugenol lures, with reference to a mean infestation rate in unprotected orchards of 13%, farm-level control obtained improvements of 71%, village-level control of 96% and both together of 99%. Statistical analysis found no interaction between farm-level and village-level control when both were used, which suggests that individual farmers still have an incentive to apply farm-level controls, whether or not their neighbours are doing so, and thus to participate in cooperative control without reference to participation by neighbours.

Indian Journal of Horticulture

Journal of Eco-friendly Agriculture

, under polyhouse conditions during 2020-2021 revealed peak whitefly incidence on gerbera during ... more , under polyhouse conditions during 2020-2021 revealed peak whitefly incidence on gerbera during 28 th SMW (3.55 whiteflies leaf-1 and 16.5 whiteflies flower-1) at a mean maximum temperature of 37.7°C, while the leaf miner incidence peaked in 22 nd and 23 rd SMW (0.3 grubs/pupae leaf-1) at a mean maximum temperature of 28.2°C and 32.6°C, respectively. Correlation studies revealed whitefly and leaf miner populations to be highly significantly and positively correlated with temperature, while negatively correlated with R.H. While testing the efficacy of various treatments against whitefly and leaf-miner, acetamiprid 20% SP @ 0.5 g L-1 was found to be the most effective treatment against both pests.

Journal of Experimental Zoology, India, 2019

Studies were conducted on management of major sucking pests viz., thrips, aphids and mites on car... more Studies were conducted on management of major sucking pests viz., thrips, aphids and mites on carnation during the year 2017-2018 at Floricultural experimental block, SKUAST-K, Srinagar. Bio-efficacy of entomopathogen, insect growth regulator, botanical and newer molecule of insecticides against thrips (Thrips florum) showed Acetamiprid 20% SP + Nimbecidine 0.03% as most effective in reducing thrips population up to 86.92% and 87.66% in leaves and flowers respectively followed by Fipronil 5% SC (83.02 and 83.80).For aphids (Rhopalosiphum maidis) also similar treatment gave best result followed by Acephate 75% SP + Nimbecidine 0.03%.Although Propargite 57% EC proved least effective against thrips and aphids both on leaves and flowers but ranked best with respect to mites, Tetranychus urticae (85.92% and 81.13%) in leaves and flowers respectively. Benefit Cost Ratio (BCR) was highest in Acetamiprid 20% SP + Nimbecidine 0.03% (1:1.88).

Journal of entomology and zoology studies, 2019

The present investigations on monitoring, screening and assessment of population of pulse beetle ... more The present investigations on monitoring, screening and assessment of population of pulse beetle on mungbean under free choice conditions of twenty three genotypes of mungbean obtained maximum number of eggs (2.2 grain) of pulse beetle on genotype ML-818 and minimum (0.80 grain) on COGG912. The survival percentage was also found highest on ML-818 (77.42%) and lowest in COGG-912 (41.60%). Minimum seed damage was recorded on COGG-912(53.33%) while maximum in ML-818 (96.66%). This resulted minimum per cent weight loss in COGG-912 (43.71%) while maximum in ML818(66.91%). Least number of adults of pulse beetle were attracted towards COGG-912 (1.0%) while highest in Market Sample (9.0%). The susceptibility index was found highest in ML-818 (10.57%) and lowest in COGG-912 (3.67%). The maximum germination was found in COGG-912 (43.67%) while minimum in ML-818(24.66%), sixty days after release. The five genotypes viz., COGG-912, T-44, MH 2-15, KM-2262 and KM-2266 registered promising on the ...

Journal of entomology and zoology studies, 2020

A single 8 day's old nymph, mature female and mature male of anthocorid bug B. pallescens Pop... more A single 8 day's old nymph, mature female and mature male of anthocorid bug B. pallescens Poppius consumed an average of 9.2 10.0 and 10.0 eggs of two spotted spider mite, Tetranychus urticae Koch respectively, whereas similar stage of bugs consumed an average of 7.2, 9.8 and 9.4 eggs of European red mite, Panonychus ulmi (Koch) during a period of three days at 1:10 predator- prey ratio. Rate of consumption increased gradually in relation to increased predator- prey ratio up to 1:30. Data on consumption rate when denoted in terms of per cent host egg mortality was found declining gradually in relation to predator- prey ratio, both for two spotted spider mite and European red mite which was due to increasing chance of escape of host eggs from predation. Although potential feeding by all the stages of the bug used was positively correlated with prey density however result on was found varying at different predator- prey used. % host egg mortality by 8 day's old nymph, mature f...

Trends in Biosciences, 2009

An experiment was conducted for three years at Pulses Research Sub-Station, Habak, SKUAST-K durin... more An experiment was conducted for three years at Pulses Research Sub-Station, Habak, SKUAST-K during kharif seasons from 2006 to 2008 to study integrated phosphorus management in mungbean. Ten treatments viz., control; 30:50:30kg NPK/ ha; 30:50:30kg NPK/ha+Rhizobium;5t FYM/ha+30:50:30kg NPK/ha +Rhizobium +PSB; 10t FYM/ha +15:25:15kgNPK/ ha+Rhizobium+PSB; 10t FYM/ha +20kg P2O5 as Phosphate Rock + PSB; 5t FYM/ha +40kg P2O5 as Phosphate Rock + PSB; 10t FYM/ha +20kg P2O5 as DAP+PSB and 5t FYM/ha + 40kg P2O5 as DAP + PSB were replicated thrice in RBD. Growth, yield contributing characters and grain yield were significantly enhanced under different treatments. Highest grain yield (918 kg/ha) was recorded under 5t FYM/ha +30:50:30kg NPK/ha +Rhizobium +PSB which was 72.22% higher over control that gave the lowest yield (518 kg/ha). It also recorded highest values of plant height, pods per plant, nodule count and test weight. 5t FYM/ha conjugated with 40Kg P2O5 through rock phosphate + seed in...

Trends in Biosciences, 2009

Eleven promising genotypes of Chickpea (Cicer arietinum L.) was studied in three environments for... more Eleven promising genotypes of Chickpea (Cicer arietinum L.) was studied in three environments for seed yield. Significant differences were observed among the genotypes revealed the presence of variability for the trait under investigation. Significant variance due to G x E over environments indicating that the yield performance of the genotypes showed a differential reaction in different years. G x E (linear) effect was not significant which indicated that the yield performance of the genotypes could not be predicated over environments. Significant pooled deviations showed that the variation in the seed yield of the genotypes was influenced by some unpredictable factors. Three genotypes SKUA-C 23311, SKUA-C 23109, and SKUA-C 23320 were most stable coupled with high mean performance for seed yield over the environments with least deviation from regression co-efficient (s2di). These genotype can be incorporated in the breeding programmes for getting high yielding and stable segregants...

Journal of Experimental Zoology, India, 2019

Annals of Horticulture, 2013

Progressive horticulture, 2007

The mean incubation period varied from 1.7±0.12 days in 2002 and 1.4±0.16 days in 2003 at tempera... more The mean incubation period varied from 1.7±0.12 days in 2002 and 1.4±0.16 days in 2003 at temperature range from 31.9 - 32.2°C in 2002 and 27.3 - 30.8°C while, relative humidity was 56.7 - 62.8% during 2002 and 60.6 - 81.2% during 2003. There are total larval periods was 5.9±0.979 and 5.19 ± 0.245 days while, pupal period was 7.3 ± 0.23 and 7.03 ± 0.245 days during both the years 2002 and 2003 and in the month of June and July. The average longevity of male was 12.74 ± 2.83 and 13.09 ± 2.37 days whereas, that of female was 15.03 ± 3.14 and 15.56 ± 2.67 days during both the years in June and July. The duration of total life cycle was 15.5 ± 1.952 and 13.66 ± 2.482 days during 2002 and 2003 in June and July.

Trends in Biosciences, 2009

... Common bean (Phaseolus vulgaris L.),popularly known as rajmash is one of the important pulse ... more ... Common bean (Phaseolus vulgaris L.),popularly known as rajmash is one of the important pulse crop. In India it is grown in the hilly areas of north-western Himalayan region during kharif seasonand rabi in plains. ... SA DAR1, FA PIR1, ABU MANZAR AND AJAZ A. LONE2. ...

Trends in Biosciences, 2009

... infestation by melon fruit in bitter gourd has been reported to vary from 41 to 89% (Lall and... more ... infestation by melon fruit in bitter gourd has been reported to vary from 41 to 89% (Lall and Sinha, 1959; Narayanan and Batra ... RESULTS AND l>ISCUSSION The freshly laid eggs were shiny, translucent and whitish in colour, cylindrical in shape, slightly curved andn:.lrrow at ...

NEW BOTANIST-International …, 2006

Twenty five genotypes of lentil were evaluated for twelve char-acters. Phenotypic coefficients of... more Twenty five genotypes of lentil were evaluated for twelve char-acters. Phenotypic coefficients of variation (PCV) were greater than geno-typic coefficient of variation (GCV) for all the traits. High heritability accompanied by moderate to high GCV and genetic gain were ...

Journal of Experimental Zoology, India, Nov 15, 2022

bioRxiv (Cold Spring Harbor Laboratory), Dec 2, 2022

Seed priming improves seed performance under environmental conditions. The study was designed to ... more Seed priming improves seed performance under environmental conditions. The study was designed to evaluate the effect of different priming treatments on the germination behaviour of Honesty (Lunaria annua L.). The experiment was conducted under a complete randomized design (CRD) with three replications. Seed priming was done with different concentrations of calcium chloride (CaCl 2), potassium nitrate (KNO3) and hydro priming. All the treatments except T 1 (Control) had a significant effect on seedling establishment and seedling vigour, Results show that maximum invigoration was observed in seeds primed at 1% KNO3 while minimum invigoration was observed in T 1 (Control). It was concluded that the germination percentage could be increased by using lower concentrations of KNO3 and CaCl 2 .

Study revealed that under monocropping (saffron as sole)/intercropping farming system (saffron in... more Study revealed that under monocropping (saffron as sole)/intercropping farming system (saffron intercropped with almond/apple/pear) plantation of graded saffron corms (>8 g) in September with initial corm treatment with fungicidal suspension (carbendizime at 0.01% + Mancozeb at 0.03%) or corm dressing with Trichoderma viridae at 4 g kg-1 of seed with initial spore load adjusted to 2×10 7 spores m-1 supplemented with neem cake at 1.0 t ha-1 on raised beds at 1 corm hill-1 with a planting geometry of 20×10 cm or 2 corms hill-1 with a planting geometry of 25×15 cm supplemented with FYM at 10 tons ha-1 in combination with N:P:K at 90:60:50 kg ha-1 and vermicompost at 0.5 t ha-1 or FYM at 30 t ha-1 in combination with N:P:K at 30:20:15 kg ha-1 , vermicompost at 0.25 t ha-1 together with Azatobactor ensures average saffron/corm productivity of 6.37 kg ha-1 and 15.0 t ha-1 , respectively over 4 years planting cycle. Fumigation of live reopened burrows with aluminum phosphide pellets at 2 pellets burrow-1 or 3 g aluminum phosphide pouch (56% poison)/ burrow ensures rodent control. Integrated production system capsule ensures returns to the tune of Rs. 4,635,000 and Rs. 810,000 respectively on account of sale of 25.5 kg of saffron and 60 quintals of saffron corms with a B:C ratio of 3.99:1.

Crop Protection, 2007

Pest fruit flies (Diptera: Tephritidae) may be managed more efficiently at village level than at ... more Pest fruit flies (Diptera: Tephritidae) may be managed more efficiently at village level than at farm level, particularly as two management methods-bait application technique (BAT) and male annihilation technique (MAT)-rely on attractants which have less effect on flies whose needs have been met (fed males and females in the case of BAT, mated females in the case of MAT), and so ''satiated immigrants'' may be unaffected by controls and invade treated areas. This study compared and evaluated these controls against fruit flies used at the levels of the farm and of the village (taken to be 1 km 2) at a variety of sites. Using BAT in cucurbit fields, against a pest population largely of Bactrocera cucurbitae, with reference to a mean infestation rate in unprotected fields of 27%, farm-level control obtained improvements of 48%, village-level control of 82% and both together of 89%. Using MAT in fruit orchards, against a guild of fly pests largely responsive to methyl eugenol lures, with reference to a mean infestation rate in unprotected orchards of 13%, farm-level control obtained improvements of 71%, village-level control of 96% and both together of 99%. Statistical analysis found no interaction between farm-level and village-level control when both were used, which suggests that individual farmers still have an incentive to apply farm-level controls, whether or not their neighbours are doing so, and thus to participate in cooperative control without reference to participation by neighbours.

Indian Journal of Horticulture

Journal of Eco-friendly Agriculture

, under polyhouse conditions during 2020-2021 revealed peak whitefly incidence on gerbera during ... more , under polyhouse conditions during 2020-2021 revealed peak whitefly incidence on gerbera during 28 th SMW (3.55 whiteflies leaf-1 and 16.5 whiteflies flower-1) at a mean maximum temperature of 37.7°C, while the leaf miner incidence peaked in 22 nd and 23 rd SMW (0.3 grubs/pupae leaf-1) at a mean maximum temperature of 28.2°C and 32.6°C, respectively. Correlation studies revealed whitefly and leaf miner populations to be highly significantly and positively correlated with temperature, while negatively correlated with R.H. While testing the efficacy of various treatments against whitefly and leaf-miner, acetamiprid 20% SP @ 0.5 g L-1 was found to be the most effective treatment against both pests.

Journal of Experimental Zoology, India, 2019

Studies were conducted on management of major sucking pests viz., thrips, aphids and mites on car... more Studies were conducted on management of major sucking pests viz., thrips, aphids and mites on carnation during the year 2017-2018 at Floricultural experimental block, SKUAST-K, Srinagar. Bio-efficacy of entomopathogen, insect growth regulator, botanical and newer molecule of insecticides against thrips (Thrips florum) showed Acetamiprid 20% SP + Nimbecidine 0.03% as most effective in reducing thrips population up to 86.92% and 87.66% in leaves and flowers respectively followed by Fipronil 5% SC (83.02 and 83.80).For aphids (Rhopalosiphum maidis) also similar treatment gave best result followed by Acephate 75% SP + Nimbecidine 0.03%.Although Propargite 57% EC proved least effective against thrips and aphids both on leaves and flowers but ranked best with respect to mites, Tetranychus urticae (85.92% and 81.13%) in leaves and flowers respectively. Benefit Cost Ratio (BCR) was highest in Acetamiprid 20% SP + Nimbecidine 0.03% (1:1.88).

Journal of entomology and zoology studies, 2019

The present investigations on monitoring, screening and assessment of population of pulse beetle ... more The present investigations on monitoring, screening and assessment of population of pulse beetle on mungbean under free choice conditions of twenty three genotypes of mungbean obtained maximum number of eggs (2.2 grain) of pulse beetle on genotype ML-818 and minimum (0.80 grain) on COGG912. The survival percentage was also found highest on ML-818 (77.42%) and lowest in COGG-912 (41.60%). Minimum seed damage was recorded on COGG-912(53.33%) while maximum in ML-818 (96.66%). This resulted minimum per cent weight loss in COGG-912 (43.71%) while maximum in ML818(66.91%). Least number of adults of pulse beetle were attracted towards COGG-912 (1.0%) while highest in Market Sample (9.0%). The susceptibility index was found highest in ML-818 (10.57%) and lowest in COGG-912 (3.67%). The maximum germination was found in COGG-912 (43.67%) while minimum in ML-818(24.66%), sixty days after release. The five genotypes viz., COGG-912, T-44, MH 2-15, KM-2262 and KM-2266 registered promising on the ...

Journal of entomology and zoology studies, 2020

A single 8 day's old nymph, mature female and mature male of anthocorid bug B. pallescens Pop... more A single 8 day's old nymph, mature female and mature male of anthocorid bug B. pallescens Poppius consumed an average of 9.2 10.0 and 10.0 eggs of two spotted spider mite, Tetranychus urticae Koch respectively, whereas similar stage of bugs consumed an average of 7.2, 9.8 and 9.4 eggs of European red mite, Panonychus ulmi (Koch) during a period of three days at 1:10 predator- prey ratio. Rate of consumption increased gradually in relation to increased predator- prey ratio up to 1:30. Data on consumption rate when denoted in terms of per cent host egg mortality was found declining gradually in relation to predator- prey ratio, both for two spotted spider mite and European red mite which was due to increasing chance of escape of host eggs from predation. Although potential feeding by all the stages of the bug used was positively correlated with prey density however result on was found varying at different predator- prey used. % host egg mortality by 8 day's old nymph, mature f...

Trends in Biosciences, 2009

An experiment was conducted for three years at Pulses Research Sub-Station, Habak, SKUAST-K durin... more An experiment was conducted for three years at Pulses Research Sub-Station, Habak, SKUAST-K during kharif seasons from 2006 to 2008 to study integrated phosphorus management in mungbean. Ten treatments viz., control; 30:50:30kg NPK/ ha; 30:50:30kg NPK/ha+Rhizobium;5t FYM/ha+30:50:30kg NPK/ha +Rhizobium +PSB; 10t FYM/ha +15:25:15kgNPK/ ha+Rhizobium+PSB; 10t FYM/ha +20kg P2O5 as Phosphate Rock + PSB; 5t FYM/ha +40kg P2O5 as Phosphate Rock + PSB; 10t FYM/ha +20kg P2O5 as DAP+PSB and 5t FYM/ha + 40kg P2O5 as DAP + PSB were replicated thrice in RBD. Growth, yield contributing characters and grain yield were significantly enhanced under different treatments. Highest grain yield (918 kg/ha) was recorded under 5t FYM/ha +30:50:30kg NPK/ha +Rhizobium +PSB which was 72.22% higher over control that gave the lowest yield (518 kg/ha). It also recorded highest values of plant height, pods per plant, nodule count and test weight. 5t FYM/ha conjugated with 40Kg P2O5 through rock phosphate + seed in...

Trends in Biosciences, 2009

Eleven promising genotypes of Chickpea (Cicer arietinum L.) was studied in three environments for... more Eleven promising genotypes of Chickpea (Cicer arietinum L.) was studied in three environments for seed yield. Significant differences were observed among the genotypes revealed the presence of variability for the trait under investigation. Significant variance due to G x E over environments indicating that the yield performance of the genotypes showed a differential reaction in different years. G x E (linear) effect was not significant which indicated that the yield performance of the genotypes could not be predicated over environments. Significant pooled deviations showed that the variation in the seed yield of the genotypes was influenced by some unpredictable factors. Three genotypes SKUA-C 23311, SKUA-C 23109, and SKUA-C 23320 were most stable coupled with high mean performance for seed yield over the environments with least deviation from regression co-efficient (s2di). These genotype can be incorporated in the breeding programmes for getting high yielding and stable segregants...

Journal of Experimental Zoology, India, 2019

Annals of Horticulture, 2013

Progressive horticulture, 2007

The mean incubation period varied from 1.7±0.12 days in 2002 and 1.4±0.16 days in 2003 at tempera... more The mean incubation period varied from 1.7±0.12 days in 2002 and 1.4±0.16 days in 2003 at temperature range from 31.9 - 32.2°C in 2002 and 27.3 - 30.8°C while, relative humidity was 56.7 - 62.8% during 2002 and 60.6 - 81.2% during 2003. There are total larval periods was 5.9±0.979 and 5.19 ± 0.245 days while, pupal period was 7.3 ± 0.23 and 7.03 ± 0.245 days during both the years 2002 and 2003 and in the month of June and July. The average longevity of male was 12.74 ± 2.83 and 13.09 ± 2.37 days whereas, that of female was 15.03 ± 3.14 and 15.56 ± 2.67 days during both the years in June and July. The duration of total life cycle was 15.5 ± 1.952 and 13.66 ± 2.482 days during 2002 and 2003 in June and July.

Trends in Biosciences, 2009

... Common bean (Phaseolus vulgaris L.),popularly known as rajmash is one of the important pulse ... more ... Common bean (Phaseolus vulgaris L.),popularly known as rajmash is one of the important pulse crop. In India it is grown in the hilly areas of north-western Himalayan region during kharif seasonand rabi in plains. ... SA DAR1, FA PIR1, ABU MANZAR AND AJAZ A. LONE2. ...

Trends in Biosciences, 2009

... infestation by melon fruit in bitter gourd has been reported to vary from 41 to 89% (Lall and... more ... infestation by melon fruit in bitter gourd has been reported to vary from 41 to 89% (Lall and Sinha, 1959; Narayanan and Batra ... RESULTS AND l>ISCUSSION The freshly laid eggs were shiny, translucent and whitish in colour, cylindrical in shape, slightly curved andn:.lrrow at ...

NEW BOTANIST-International …, 2006

Twenty five genotypes of lentil were evaluated for twelve char-acters. Phenotypic coefficients of... more Twenty five genotypes of lentil were evaluated for twelve char-acters. Phenotypic coefficients of variation (PCV) were greater than geno-typic coefficient of variation (GCV) for all the traits. High heritability accompanied by moderate to high GCV and genetic gain were ...