BULGARIAN JOURNAL OF AGRICULTURAL SCIENCE - VOLUME 20
Subject index (based on keywords)

15 genotypes – 877
8HQS – 1098
α-amino nitrogen – 1326
β-glucan – 576

A
abiotic stress – 342
aboveground mass – 1119
Achyranthes bidentata – 342
activity – 193
additive – 1094
adoption – 552
AE – 178
AFB – 899
age – 1466
age groups – 1237
age of calving – 447
aggregate size distribution – 1168
aggregate stability – 1168
agrarian structure – 1018
agricultural added value – 738
agricultural firms – 5
agricultural insurance – 23
agricultural productivity – 1273
agricultural system – 973
agriculture – 255, 469
agro-complex – 34
agro-ecological assessment – 348
agroenergy crops – 1189
agronomic trait – 145
air – 56
air capacity – 807
air temperature – 215
albumen – 1466
alkaline transesterification – 186
allele K/k – 1466
Allelopathy – 607
Allium scorodoprasum – 1130
AL-Prespa – 1311
Alternaria helianthi – 1444
alternative feeds – 824
ambient temperature – 1227
amino acid composition – 1090
amino acids – 1250
AMMI analysis – 421
Analytical-Hierarchical Process (AHP) – 1008
angiotensin II – 220
Anhui – 1302
Anhui province – 786
anthocyans – 199
Anthropogenic pollution – 1202
antibacterial activity – 1392
anticancer – 818
antioxidant – 227, 818
antioxidant activity – 199, 839, 1130, 1392
antioxidant enzymes – 227
aphids – 658
Apis mellifera – 685
apple – 628
apple farms – 46
arable farming – 1211
arable weeds – 786
Artemia – 670
Artemisia siberi – 1334
artificial neural networks (ANN) – 830, 1289
ash – 576
atomic absorption spectrophotometry – 595
attached membrane – 1435
Azerbaijan wheat accessions – 87

B
Bacillus subtilis - 193
back fat thickness – 909
backfat – 452
bacterial strains – 666
bacteriological analysis – 595
Balkan endemics – 1375
Banat – 795
bankruptcy - 5
barley – 576, 883
barley (Hordeum vulgare L.) – 421
beef cattle farming – 552
Belozem – 685
benzyladenine – 633
Bermuda grass – 824, 1289
berries – 1094
berry – 127
best management practices – 552
bioactive peptides – 813
biochemical parameters – 1233
biocontrol – 666, 849
biodiesel – 186
biodiversity – 162, 1334, 1368
biogenic amine – 834
biological activity – 1116v biological yield – 173
biomass – 66
biomonitoring – 325
biostimulant – 1361
biotic stress – 405
biplot and grain yield – 421
Biplot diagram – 101
bird cherry-oat aphid – 658
Biweight Tukey’s method – 1040
blood parameters – 680, 924
boar – 703
body condition score – 203
body weight gain – 962
bootstrap – 267
borneol – 1334
Bosnian Pony – 1237
botanic insecticides – 1116
boza – 1079
bread – 510
bread wheat – 96, 101
breeding value – 376
broiler – 924
broiler farm – 56
BTH – 1439
Bt-maize – 658
buffalo heifers – 447
Burley tobacco – 643

C
calcium – 563 calf birth weight – 1227
callus – 155
calves – 675
Canned tuna fish – 834
capillary zone electrophoresis – 834
cardiosomatic index – 1202
cardiovascular disease – 199, 1094
Carduus thoermeri - 622
carrot – 1457
cashmere – 980
Casimir effect – 995
catalase – 883
cattle – 1227
causal and scaling principle – 995
CCA analysis – 786
channel catfish – 957
characterization – 193
chemical – 1046
chemical composition – 1090, 1119, 1250
cherry tomato – 877
chlorophyll fluorescence – 647
Cicer arietinum L. – 150
Cichorium endivia L. – 1361
cinnamon – 1079
Cirsium arvense (L.) Scop. – 607
citizen’s jury – 1311
clay dispersion - 807
CLCuD – 405
clinical mastitis – 710
clove – 1079
cluster – 127
coagulase-negative staphylococci – 1061
coarse hair (fiber) – 980
cold storage – 246
color – 988
colour of berry juice and berry skin – 843
combed down – 980
combining ability – 1109
commodity farms – 1281
Common agricultural policy – 738
competitiveness – 12, 734
composting – 1368
compound feeds – 532
conjugated linoleic acid – 452
Conocarpus leaves – 824
conservation significance – 601
conservation tillage – 1340
consulting – 34
consumers’preferences – 761
contaminated water – 337
continuous cropping – 416
control – 1175, 1439
copper ore – 581
corn germs – 532
corn oil – 1085
Cornus mas – 358
correlation – 1130, 1380
costs – 1281
cotton – 348, 487
cottonseed oil – 839
cow – 1483
cows – 215, 715, 1502
crop insurance - 23
crop rotations – 416
crop yield response factor – 1151
Cry1Ab – 658
CULTAN depot – 563
cultivars – 391
cultivation – 364
cultured frog – 1250
cutting lamb – 1090
cuttlefish – 1046
cyclodextrin – 818
cyclopentanespiro-5-(2,4-dithiohydantoin) – 293
cylomicrons – 238
cyst nematode – 666
cytogenetic analysis – 1123
Czech Fleckvieh – 215, 1477

D
dairy cattle – 710
dairy cow reproduction performance losses – 1483
dairy cows – 203
DAS-ELISA – 1142
date palm – 754
decision-making support system – 474
degradability – 428
degradation of the environment – 767
dehairing machine – 980
deliberative process – 1311
development – 685, 1281
DGAT1 – 203
diallel – 1109
dietary fibre – 576
different ecological conditions – 856
digestibility – 428
digestion – 1401
direct seeding – 117
disease and pests – 391
distribution – 162
diversity and differentiation – 571
divestments – 1281
Dixon test – 1040
DNA polymorphism – 949
Dominant – 1466
dried distiller’s grain with solubles – 428
drought stress – 275
Drought tolerance indices – 101
dry cured meat – 523
dry pea – 376
drying – 1289
DUS trials – 1040
dynamic land suitability guidelines – 1349

E
eating patterns – 915
ecology – 795, 1334
economic characters – 348
economic size – 46
ecoremediation – 1189
edible coatings – 536
efficacy – 1175
efficiency – 51, 469, 727
egg size – 957
egg yolk lipids – 1472
eggplant – 287
eggshell – 1466
ejaculate volume – 703
ELISA – 150
elites – 1137
emission – 186
emitter discharges ratios – 1151
environmental features – 601
environmental policy – 767
enzyme-linked – 834
equilibrium relative humidity – 1289
ESD test – 1040
ESP – 807
essence change – 1334
European Union – 1273
evapotranspiration – 122, 297, 1151
ewe – 721
exports – 754
extensive – 860

F
faba bean – 1439
FADN – 46
failure processes - 5
failure reasons - 5
farm – 474
farm structure – 458
farmers – 738
farmstead structures – 738
farmyard manure – 1457
fat and protein losses – 1483
fattening pigs – 680
fatty acid composition – 1472
fatty acids – 112, 1250
Fe – 1380
fecundity – 957
feed additive – 532
feed flour from grape waste processing – 532
feed intake – 675
feeding methods – 915
fermentation – 1079
fermented sausages – 1061
fertilization – 779, 1361
field capacity – 807
field experiment – 779
finance – 458
financial support – 738
first maturity – 957
Flame seedless – 127
flax seeds – 112
flora – 795
flora of agrophytocenoses – 1340
floristic characteristics – 601
flowering – 633, 1421
fluorescent lamps – 1426
foliar fertilizers – 178
foliar spray – 287
food emulsion – 1085
food quality – 243
food safety – 337
formulation – 532
fossils – 995
freeze-drying – 1401
fresh manure – 56
fresh matter – 888
frog meat – 1250
fruit characteristics – 856
fruit plantations – 42
fruits preservation – 243
full-sunlight – 1421
functional foods – 199
fungicide – 1175

G
GA3 – 1098
Galliformes – 962
gamma sterilization – 243
gas exchange – 275
gas production – 824
GC/FID – 227
GC/MS – 227
Gemini viruses – 405
genetic diversity – 87, 1413
genetic polymorphisms – 203
genotype – 1466
genotype x environment interaction – 1320
germination – 133, 140, 342, 1195
gestational age – 721
GGE biplot – 1320
Ghana – 746
gibberellic acid – 127
Glomus spp. – 849
glucosinolates content – 868
gluten – 96, 1221
goat – 690
goat down – 980
goat wool – 980
goats – 590
gonadоsomatic index – 1202
Gossypium hirsutum L. – 348
government support – 458
grain – 607
grain maize – 613
grain number – 1109
grain yield – 96, 117, 376, 647
Granger causality – 727
grape powdery mildew – 1175
grape seed oil – 924
grapevine – 860
grassland – 73
grazed ex-fields – 1158
greenhouse – 1116
greenhouse cucumber – 1406
gross profit maximization – 42
growth – 140, 303, 690, 888, 943
growth rate – 1255
growth substrate – 1195

H
H. salicifolius – 1444
H. tuberosus – 1444
HAA – 503
habitat selection – 1386
hail insurance – 23
hard water – 595
harvest – 487
harvest time – 628
harvesting – 310
heat stress – 210, 915
heavy metals – 330
Helianthus annuus – 1444
helical spiral – 1513
hematology – 1237
herbaceous plants – 325
heritability – 1109
Heuchera – 1421
high density lipoproteins – 238
high temperature extraction – 818
highway – 330
histamine – 834
histometry – 1498
Holstein – 215, 1477
Honeybee brood – 899
Hordeum vulgare – 883
horse – 1233
Horse Mackerel – 1054
Hsf1 – 571
Hsf2 – 571
Hsf4 – 571
hybrid combinations between seeded and seedless vine cultivars – 843
hybrids – 868
hydro gel – 1295
hypericins – 364
Hypericum perforatum – 364
hyperspectral reflectance data – 1142
hypobaric storage – 1406

I
immature embryo – 1102
immunosorbent assay – 834
in vitro wheat culture – 1102
incidence – 710
increasing doses nitrogen – 321
indels – 949
index of leaves greenness – 633
indicators of milk production traits – 203
ingredients – 503
inheritance – 843, 1109
injection – 563
innovations – 552
inovations – 34
inputs – 738
insulation – 246
insurance in Serbia – 23
intensive – 860
international trade - 12
intramuscular fat – 909
introduction – 162
investment – 734
investments – 1281
irrigation – 337, 613
irrigation scheme – 1349
ISSR – 87, 1413
Italian afforestated surfaces – 727
Italy – 12
Ixodidae – 590

J
Japanese quail – 1472
Japanese quails – Manchurian Golden and Pharaoh breeds – 1498
Juniperus communis L – 227

K
Karamanka pear – 856
komatsuna – 321

L
Lachrymal gland - 1498
lactic acid bacteria – 1061
Lactuca sativa L. – 1361
LAI – 381
lamb - 1261
lambing rate – 1261
landrace – 638
landscape elements – 761
lawn – 1295
laying type hens – 1466
leaf gas exchange – 173
leaf manure – 1457
lean meat portion – 909
leaves length – 888
LED lamps – 1426
life forms – 795
light regime – 364
Light-emitting diode (LED) colors – 943
linear programming – 42
lipid composition – 622
lipids – 238
litter – 56
litter size – 1261
live weight at birth – 1261
live weight at weaning – 1261
liver – 210
livestock – 552
living cells – 995
local flora – 1375
logistics management – 480
long term studies – 779
longevity – 1098
long-term structure – 1018
losses of milk quality – 1483
low density lipoproteins – 238
lyofilization - 830
lyophilization – 995
lysine deficit – 428

M
Macedonia – 541
macro- and micronutrients in blood – 715
macroelements – 1426
macro-micro elements – 321
main distributor – 1513
maize – 178, 1320
malmquist – 469
management – 34
market analysis – 474
mastitis risk factors – 1502
material supply tube – 1513
mathematical models – 199
maturity index – 628
maximum permitted level – 73
measurements – 721
meat – 503
meat content – 1255
meat fatty acid composition – 924
meat quality – 943
mechanical picking – 487
mechanized harvesting – 1435
medicinal plants – 601
M-estimate – 1040
microbial pollution – 56
microbiological – 1046
microelements – 1426
microemulsion – 510
microsatellites – 949
microscopy research (SEM) – 1123
microstructure – 523
milk – 215, 1502
milk composition – 215
milk losses – 1483
milk production – 51, 428, 915
milk yield – 690
mineral deficiencies – 1195
mineral fertilization – 1182
mineral fertilizers – 1513
minerals – 1250
Miscanthus giganteus – 1189
mistletoe – 818
mixed grassland – 779
modified atmosphere packaging – 1046
molecular markers – 868, 949
morphological characteristics – 79
morphology – 967
morphometric characteristics – 703
motility - 967
multi-attribute utility theory (MAUT) – 1008
multi-criteria evaluation method – 1311
multifunctional agriculture – 1008
multifunctionality – 727
Multiple and logistic regressions – 746
multiple regression model – 727
muscle – 210
mutation – 949

N
NaCl – 883
Nam Houm Reservoir Lao PDR – 973
Nannochloropsis oculata - 66
natural antioxidans – 358
natural pastures – 795
NDVI – 381
negative energy balance – 203
net isosteric heat – 515
net photosynthetic productivity – 173
Neural network – 51
new breeding material – 1444
new varieties – 643
nitrate reductase activity – 140
nitrification – 563
nitrogen – 275, 888, 1245
nitrogen dose – 576
nitrogen supply – 779
nitrogen use efficiency – 275
no roughage – 675
Norduz – 690
NPK rates – 1340
nutrition diets – 830
nutritive value of pollen – 685

O
O. foetida – 1439
oil content – 79
oil-flax – 79
oilseed rape (B. napus L.) – 868, 1040
onion – 297, 1211
Onopordum acanthium – 622
optimization – 42, 186
ordered probit – 552
organ baths – 220
organic agriculture – 1168
organic fertilization – 1182
organic plant protection – 381
organogenesis – 1444
ornamental plants – 633
Orobanche cumana – 1444
osmotic treatment – 515
outliers – 1040
output – 1281
outputs – 738

P
paddy soil – 497
Paenibacillus larvae – 899
PAH – 503
palm oil – 186
parameters of the root system – 381
parasite burden – 1233
pastures management – 1386
pathogens – 1477
PCR – 899
PCR-RFLP – 203
pear – 638
pectate lyase – 193
Pekin ducks – 943
Pelophylax ridibundus – 1202
Pepino (Solanum muricatum Aiton) – 988
percentage of infectious animals – 1483
perennials – 1421
performance – 690, 924
performance test – 1255
performances – 34
peroxidase – 883
Peshawar KPK – 595
PFP – 178
pH – 1195
Phasianidae – 962
phenolic compound – 358
phenolic compounds – 1130
phenolic derivatives – 1392
Phoma macdonaldii – 1444
Phomopsis helianthi – 1444
phospholipids – 1472
phosphor – 1245
phosphorus – 563, 1368
photosynthesis – 371
physical distribution – 480
physical parameters – 536
physical properties – 988
Phytophthora – 162
phytotoxic examination – 293
picker – 487
pig farm – 1245
pigments – 337
pigs – 452
Pisum sativum (L.) – 1340
plant – 330
plant community – 1375
plant growth – 1195
plant nutrient uptake – 849
Plasmopara helianthi – 1444
plastid pigments – 173
plum – 515
Poland – 1018
Polish agriculture – 1281
pollen – 1123
polyenzyme product – 1401
polyphenols – 199
poplar – 807
pork meat – 909
position of cultivation – 1421
positive selection – 571
postweaning growth – 675
potassium – 888, 1245, 1326
potato – 122, 303
potatoes – 1182
Potyvirus - 150
poultry litter – 1368
poultry manure – 1457
poverty reduction – 746
pre-sowing electric treatment – 1508
presowing treatment – 1119
prevention – 1094
Principal Component Analysis – 101, 877
probiotic foods – 830
processing quality – 215
production costs – 734
productivity – 51, 182, 371, 469, 680, 685
profitability – 46
proline – 140
proline – 883
protected area – 1311
protected areas – 73
protection – 391
protein – 576, 633, 1221
protein yield – 428
proteins – 238
pruned vineyard stalks – 1268
purification – 193
Pyrus communis L. – 638

Q
QTL mapping – 1450
quality – 145, 1061, 1182, 1361
quality attributes – 877
quality changes – 1046, 1054
quality indicators – 1406

R
rabbits – 210
radical scavenging – 1392
radicle – 607
rain-fed wheat – 267
rams – 967
Rana ridibunda – 1250
RAPD – 87, 1413
RAPD analysis – 1444
rapeseed – 310
rapeseed meal – 428
RAS – 66
raspberries – 391
raspberry cane formation – 391
raw milk – 1477
reclamation – 581
Red Delicious – 628
reduced tillage – 117
regions – 348
regression models – 267
renewable resources – 767
renosomatic index – 1202
reproduction – 685
reserve Gorna Topchiya – 601
resistance – 405, 1444
rheology – 1221
Rhopalosiphum padi – 658
rice – 1450
rice farmers – 746
ridge planting – 145
Ripening index – 628
risk assessment – 73
River Tundzha hilly valley – 601
root – 342
root biomass – 1295
root mass – 1119
Rosa damascena – 293
rosemary – 1054
RT-PCR – 150
rumen development – 675
ruminant – 824
rural depopulation – 727
rural development funds – 727

S
Saccharomyces cerevisiae - 227
safety – 1061
sage – 1079
Salicylic acid – 1439
Sand lizard – 1386
SAR - 807
Saudi Arabia – 754
scanning electron – 1123
Scorzonera hispanica – 1195
season of birth – 447
season of calving – 447
Sedum aizoon L. – 1098
seed germination – 638
seed loss – 1435
seed mixture – 1158
seed yield – 79, 381
seedless and native vine cultivars – 1123
seedlessness – 843
seedling – 133, 607
seedling deviation – 133
seedling emergence rate – 1102
seedlings – 173
seeds – 133, 622
semi-shade – 1421
sensory analysis – 510
serological detection – 1137
sesame – 1435
sewage sludge – 581
shatter loss – 310
sheep – 590
shelf life – 1054
shelf-life extension – 536
silage – 824
siliquae – 310
siliquae dehiscence – 310
Silybum marianum – 622
size-exclusion HPLC – 813
slaughter weight – 909
slippage – 949
Slovenia – 458
slow-release fertilizers – 888
smoking properties – 643
smooth muscle strips – 220
soapstock – 839
sodium – 1326
software – 474
soil – 56, 330, 1245
soil and tool parameters – 497
soil bin – 497
soil cover – 1295
soil force sensors – 497
soil matric potential – 122
soil organic carbon – 1168
soil properties – 255
soil structure – 1168
soil temperature – 1211
soils – 1380
somaclonal variations – 155
somatic cell count – 1477, 1483
sorghum x Sudan grass hybrids – 182
sorption isotherms – 515
sowing rate – 182
soybean – 1119
soybean meal – 428
spatial dependency – 1018
species composition – 1158
species list – 1375
species richness – 1158
specific crop ranges – 1349
spermatozoa – 703, 967
spike – 1109
Spirulina platensis – 680
spleenоsomatic index – 1202
spoilage micloflora – 503
stability – 613, 754, 1320
stakeholders – 973, 1311
stalk choppers – 1268
stalk chopping – 1268
starter culture – 523
statistical analysis – 795
sterols – 112
stigma exertion – 1450
stocking size – 670
stomatal conductivity – 371
storage – 133
straw burning – 1302
straw resource utilization – 1302
straw returning - 1302
strongyle – 1233
stubble – 1302
sucrose concentration – 1326
sugar losses – 1326
sugars – 337
suitability rating – 1349
sunflower meal – 428
sunflower oil – 452
superoxide dismutase – 883
surface of moldboard plow – 497
sustainable competitiveness – 767
sustainable development – 767
sweet cherry – 1137
sweet corn – 145
Systemic acquired resistance SAR – 1439

T
table egg production – 734
tailing pond – 581
tarsus length – 962
technical progress – 1273
technicalefficiency – 1273
test weight – 96
Tetraselmis chuii - 66
texture – 510, 1221
thermal analysis – 246
thermal image – 246
thousand grain weight – 96
time’s arrow – 995
tissue culture – 155
tobacco – 255, 643
tobacco plants – 1142
tocopherols – 112
toe length – 962
tomato – 140, 1116, 1151
tomatoes – 173
total cholesterol – 1472
total count of microorganisms – 1483
Total Factor Productivity (TFP) – 1273
trace elements – 210, 255, 325
Trade liberalization – 746
traditional variety – 856
traits of udder quarters – 1502
transcriptome – 949
transition period – 715
transpiration – 371
transplantation – 1102
transportation – 480
Trichoderma spp. – 849
triploidy – 1123
Triticale – 1109, 1413
Triticum aestivum – 275, 647
Triticum aestivum L. – 607
TSWV – 1142
Turkey – 469
Tuta absoluta – 1116

U
udder health practices – 710
Ukraine – 458
ultrasound – 721
ultrasound measurement – 1261
Umbridae – 670
Uncinula necator – 1175
unite fuel consumption – 1268
unite power requirement – 1268
upland cotton – 405
uptake – 1380
urban adults – 541
urban environment – 325

V
varieties – 182
vasopressin – 220
vegetables – 337
vegetation – 112, 1158
velocity – 967
Vemoherb T – 1472
Verbisina helianthoides – 1444
vernalization – 1102
very low density lipoproteins – 238
Vicia faba L. – 381
vigor – 133
Virginia tobacco – 1380
virus status – 1137
virus susceptibility – 150
virus tolerance – 150
vitamin C and protein – 321
viticulture – 849
vitreousness – 96

W
wastewater – 66
water contamination – 595
water deficit – 613
water quantity – 303
water relations – 275
water resources management – 973
water restraint – 1151
water stress – 155, 297
water use efficiency – 122, 297
waterlogging – 647
weed – 607
weed seed bank – 860
weed species diversity – 786
weeds – 416
wheat – 117, 155, 1221
wheat bread – 1094
wheat seeds – 1508
white brined cheese – 813
Whitefly – 405
wild frog – 1250
wine – 541
wine industry - 12
wine tourism product – 761
wing length – 962
winter rape – 310
winter wheat – 416

Y
Yangtze River –786
yield – 145, 297, 303, 613, 1361, 1457, 1508
yield components – 381
yield estimation – 267
yield reduction – 1211
yields – 1182
yolk – 1466
young consumers – 541
young crossbred boars – 1255

Z
zeolitic feed additive – 532