نتایج جستجو برای: survival percentage
تعداد نتایج: 458921 فیلتر نتایج به سال:
This experiment was carried out to examine the effect of temperature on egg incubation period, exogenous feeding onset, growth and survival of the zebra cichlid , Cichlasoma nigrofasciatum larvae with two replications. Experiment was conducted in four groups of brood stocks with Four temperatures with two replications 22-24 °C, 24-26 °C, 26-28 °C and 28-30 °C. After ovulation brood stocks were ...
in order to determine the genetics of barley lines for freezing resistance based on crown survival percentage an experiment was carried out as a split plot design on the basis of randomized complete blocks with two replications. forty barley lines were assigned in subplots and five freezing temperatures (-8, -11, -13, -15 and -17 ˚с) were allocated in main plots. the results showed significant ...
To evaluate the effect of different concentrations of IBA, timing of cuttings and type of plant rootstock in cutting-graft propagation (Omega graft) of Ficus benjamin cv. variegate, an experiment was performed as a factorial in a completely randomized design with three replications in Gorgan University of Agricultural Sciences and Natural Resources in 2012. Each replication consisted of ten sam...
This study investigated the integrated effects of two photoperiods (16:08 and 08:16 h) along with three light intensities (3000, 15000 and 50000 lux) on some reproductive parameters and broodstock survival rates of Artemia parthenogenetica in six treatments in a completely randomized factorial design in culture system until death. Two-way ANOVA analysis revealed significant differences in total...
abstract nymphal survival and crawlers movement of bemisia tabaci (homoptera: aleyrodidae) on different varieties of cotton, gossypium hirsutum, was studied on 5 different varieties including, varamin, kucker-312, bulgar-557, sahel-80, and native (red leaf/red boll) at 24±2 °c, 65±5% rh, 16:8 (l: d) photoperiod in the greenhouse condition. crawlers' movement was significantly different on the v...
ajowan is one of the endemic plants in khorasan province, and there is a little information on its tolerance to cold stress. in order to study freezing tolerance of ajowan, an experiment was conducted in faculty of agriculture, ferdowsi university of mashhad, based on factorial-completely randomized design with three replications and three ecotypes of ajowan (neishabour, birjand and torbat-e-he...
In this study a bio-economic model was used for a flock with 195 breeding ewes and 20 rams to determine economic values of important traits in Zel sheep of Golestan including litter size, pre-weaning survival, post-weaning survival, ewe survival, birth weight, weaning weight, yearling weight, ewe mature weight, dressing percentage, conception rate and wool weight. In this model, fixed environme...
چکیده این تحقیق در بخشی از سامان عرفی شوراب چنار بگالی استان لرستان که بلوط ایرانی (quercus brantii lindl.) گونه غالب جنگل های آن است صورت پذیرفت. در مطالعه ی حاضر به منظور بررسی تاثیر عوامل توپوگرافی (ارتفاع از سطح دریا، شیب و جهت زمین) بر فاکتورهای تاج پوشش، مساحت تقریبی 1500 هکتار انتخاب گردید. سپس تعداد 147 قطعه نمونه مستطیلی به ابعاد 20 ×10 متر با استفاده از شبکه آماربرداری منظم - تصادفی ...
Penelitian ini bertujuan untuk mengetahui pengaruh pemotongan organ tubuh udang lobster yang terbaik terhadap persentase moulting dan kelangsungan hidup air tawar (Cherax quadricarinatus). dilaksanakna pada bulan April sampai dengan Juni 2020 di Labortaorium Akuakultur Fakultas Pertanian, Universitas Prof. Dr. Hazairin, SH Bengkulu. dilaksanakan selama 60 hari. Wadah digunakan berupa keranjang ...
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