BULGARIAN JOURNAL OF AGRICULTURAL SCIENCE - VOLUME 18
Subject index (based on keywords)

(+)-catechin oxidation – 103
‘cold storage’ - 55
305 days milk yield – 771

A
abiotic stresses – 801
accuracy – 455
acreage – 539
adoption rate – 263
age – 482
agricultural futures markets – 651
agricultural policy - 2
agriculture – 801
agriculture and rural policy – 519
agrochemical effectiveness – 354
alfalfa – 708
alien species – 965
amino acids – 288
ammonium thiosulfate – 898
anatomy – 144
animal feed – 571
anthropogenic activities – 403
antibacterial activity – 446
antioxidant properties – 103
apple – 178, 362, 889
aspartate aminotransferase activity – 112
attitude and behavior analysis – 531
Autochthonous plums - 55
automodality principle – 148
AVG treatments – 889
awareness – 254
awareness creation – 403

B
backcross - 36
bacterial canker – 682
bacterial wilt – 682
Bafra plain – 219
basin irrigation – 219
bean – 701
beef – 288
beef cattle – 443
behavior – 511
behaviour – 278
biennial bearing – 898
biochemical blood parameters – 278
bio-control – 557
biofertilizer – 387
bioindicators – 435
biologically active substances – 100
biomass – 752
bioproducts – 320
bioreactors – 545
biotechnology – 801
birth weight - 117
Black Sea coast – 370
body measurements – 138
Botrytis cinerea - 689
Brassica napus L. – 83
breed – 942
Broomrape – 557
Brown Swiss cow – 771
buffaloes – 778
Bulgaria – 641

C
C:N ratios – 626
cabbage – 320
calves – 778
canola – 330
Canola – 83
CAP reforms – 865
capacity building – 403, 854
Capsicum annuum L. – 565
Carabidae – 370
carbohydrate utilization – 759
carbon – 626
carbon cycle – 626
Casimir effect – 148, 820
Casimir vacuum state – 820
cattle – breeding – 958
cellulolytic activity – 296
cheese – 487
chemical desiccant – 325
cherry laurel – 77
chicken breeders – 278
chisel – 794
Citrus sinensis – 334
Cladius pectinicornis – 929
classical methods of propagation – 545
climate change – 403, 531, 801
CO2 assimilation – 589
coat colour – 138
codling moth – 675
cold – 801
cold storage – 991
collective organization – 834
color characteristics – 889
comfort and stress conditions – 511
common bacterial blight – 701
community – 49
comparative analysis – 519
compensatory allowances – 846
computed tomography – 784
conditioning – 752
conjugated linoleic acid – 827
consumption – 539
coriander – 100, 315
corn – 616
correlation – 171, 578
correlation analysis – 330
correlations – 971
corticosterone – 278
cortisol – 112
cost – 455
cottonseed – 103
cow dung – 924
cow milk – 958
craniology – 971
crop density – 668
crop farms – 846
crop rotation – 608
crossability – 713
crossing – 207
cryoprotection – 429
Cu – 749
cycle trend – 410
cyclopentanespiro-5-(2,4-dithiohydantoin)
– 929
Cytology – 565
cytoplasm – 207

D
dairy cows – 451
dairy sheep – 482
damage criterion of harmfulness – 227
Data Envelopment Analysis – 846
Delphi method – 834
diagnosis - 70
differentiation - 70
dill – 1005
Diptera - 49
direct seeding – 789
disease control – 689
disease severity index – 701
diversity – 608
double-nose – 138
drought - 29, 531, 801, 934
drought stress – 171
dry bulk – 794
dry matter translocation – 325
DSC – 429
duration of cultivation – 722
durum wheat – 595

E
ecological – 511
ecological characteristics – 742
economic integration – 519
economic performance – 846
economic sustainability – 418
economics – 958
ecotourism - 19
education – 254
efficiency – 240, 873
Ege Region – 92
egg laying capacity – 953
elementary living cells – 148
elements of productivity – 315
embryo rescue – 342, 713
energy consumption – 991
energy use – 320
environment – 435
environmental issues – 254, 854
estimation – 958
estimation of body composition – 455
ethereal oil – 100
EU – 519
Europe – 263
ewe – 493, 501, 942
ewes – 942
exogenous enzymes – 296
extension – 254
extension and education – 854
extensive grazing – 487
extractability – 733
extraction – 153

F
faba bean – 557
Fagopyrum dibotrys - 912
farm systems – 320
farmers’ decisions – 865
farming structure – 233
farming systems – 854
fatty acid profile – 827
fatty acids – 288, 487, 763, 778
fear susceptibility – 482
feasibility – 455
feed – 987
feedlot – 443
fertile analogue – 565
fertilization - 42, 608
field pea – 571
first breeding age – 506
first calving age – 506
flora – 608
foetal measurements – 493
food security – 801
fresh ear yield – 668
Fresh fig – 191
fruit characteristics – 77
fruit quality – 191
fruits – 749
fuel consumption – 789
fuel pellets – 752
fungicide – 49, 185
fungicide efficacy – 689
fungicide resistance – 689

G
Gachsaran – 595
gamma sterilization - 161
GE interaction - 595
genetic improvement – 330
genodiversity – 197
genotype x environment interaction – 905
genotypes – 77, 207
germination – 348, 1005
gestational age – 493
GIS – 263
goat – 166, 487
gradation – 304
gradation precision – 987
grafting – 883
grain weight per spike – 185
grain yield – 595, 616
grain-filling period – 934
Greece – 846
ground beetles – 370
growth and survival ratio – 980

H
habitats destruction – 403
health check – 865
health status - 125
heat – 934
heat stress – 506
heavy metal accumulation – 912
heavy metals – 166, 396, 435, 733
hedge ratio – 651
Helianthus annuus – 342
herbicide – 227
herd behavior – 125
heritability – 117, 272, 595, 905
Holstein – 771
Holstein calf - 117
honey bees – 435
hop industry – 233, 865
hormone-vitamin-mineral treatment – 501
hydrogen cyanamide – 898
hydrolysis – 103
hyperkeratosis – 451

I
Identification – 759
IHGC – 233, 865
imaging anatomy – 784
impact on agriculture – 641
in vitro - 583
in vitro culture – 55
in vitro micro propagation – 545
indirect selection – 330
indoor on litter and free range
systems – 278
industrial pollution – 254
input use – 240
inputs availability – 854
insecticidal activity – 929
interspecific hybrids – 713
irrigated mustard – 924
irrigation methods – 362
Isparta – 658
Italian milk production – 410

J
jersey – 506

K
Kangal – 980

L
lacrimal bone – 971
lactation stage – 166
Lactobacillus delbrueckii subsp.
bulgaricus - 759
land leveling – 219
land use – 722
larvae – 334
layers – 953
laying hen – 953
leaching – 733
leaf chlorophyll content – 934
legs – 794
lepidopteran larvae – 675
less favored areas – 846
lipolysis – 763
live weight gain – 443
liver – 144
livestock products – 539
living cells – 820
locomotor activity – 511
Longissimus dorsi – 827
long-term preservation – 161
low yields – 854
Lucerne longhorn beetle – 708
lyophilization – 148, 161, 820

M
machine milking – 482
maltose – 429
Malus x domestica – 898
management – 958
market-traded commodities – 651
mass range – 304
mathematical poultry welfare
assessment model – 278
mechanized harvesting – 635
median – 410
medium-term priorities -2
meiotic abnormalities – 713
milk – 166
milking parlor – 125
milking temperament – 771
minerals – 288
minor or trace elements – 92
mobility – 733
molecular diagnosis – 682
monthly effect – 410
morphological trait – 138
mule ducks – 511
mule ducks – 511
Multiplication – 55
mutant line – 342

N
nanophysics – 148, 820
natural and cultural sources – 19
natural forest – 997
neonatal piglets – 112
neutrophil/lymphocyte ratio – 112
nickel complexes – 446
nitrogen – 626
nitrogen cycle – 626
nitrogen fixation – 557
nitrogen retention – 455
nitrogenase activity – 387
NPК – 924
number of holdings – 233
nursery production – 883
nutrient uptake – 362
nutritive value – 571
nuts – 883

O
oat – 171
occupational health – 254
oestrus synchronization – 942
off-season – 501
oil content – 924
omega PUFA – 778
optimal tax level – 641
optimization – 987
organic acids – 763
organic breeding – 166
organic cotton – 418
organic farming – 263
organic production – 320
Orobanche (Orobanche cernua L.) – 873
Orobanche foetida – 557
Oryza sativa L. – 219

P
palatal bone – 971
paprika yield – 589
parasitic arthropods (Arthropoda) – 965
parasitoid complex – 675
path analysis – 330
PC analysis – 578
PCB – 197
pea – 905
pelleting – 752
pendimethalin – 742
peptides – 103
performance – 443
pesticides – 641
PGPR – 197
phenotype – 759
phosphate solubilizing – 387
photoperiod – 178
Phyllocnistis citrella – 334
physico-mechanical properties – 889
phytoremediation – 912
phytotoxicity – 583
pig – 455
pigment content – 589
pigs – 827
Pisum sativum - 571
Podosphaera leucotricha – 178
polycross field – 708
polyphenols – 334
population growth – 854
post-anthesis drought stress – 325
potassium – 616
potato – 304
pot-tests – 354
poultry housing system – 953
poultry litter ash (PLA) – 733
PPV – 70
PRD irrigation – 616
precision – 304
predecessor – 315
previous crop – 29
principal component analysis – 171
producers group – 834
production function – 240, 873
productive life – 272
productivity – 227
productivity components – 696
progesterone – 942
protease – 103
protein – 103
protein content -42
proteins – 153
proteolysis – 763
protozoa – 296
pruning – 578
Prunus laurocerasus L. – 77
pseudomonads – 197
puppy – 980
quality – 92
rabbit – 144
rabbit heart – 784
Raspberry – 689

R
recreation - 19
recurrent – 36
refrigeration – 991
regression – 578
reliability – 595
repeatability – 117
rep-PCR – 197
reproductive efficiency – 501
Republic of Serbia – 519
resistance (Orobanche cumana) – 342
resource-saving technology – 227
response surface statistical model – 987
RFLP – 70
Rhizobium - 557
Rhizosphere – 197
Rice – 219
rootstock – 583
rosa – 658
Rosa damascena – 578, 658, 929
Rosa damscena Mill. – 545
rotary helix – 304
rotational speed – 987
row spacing – 83
RT-PCR - 70
rumen – 296
rural development – 519

S
safety – 254
salinity – 801, 1005
salt tolerance – 207
salt-free-salt diet – 942
sawdust sludge – 912
scale efficiency – 846
scaling principle – 820
seasons – 443
seed yield – 42, 924
seedling – 883
seeds yield – 315
selection criteria – 330
SEP – 429
sesame – 635
sewage sludge – 396
shading – 178
Shagya – 272
shelling percentage – 668
Siderophores – 197
silage – 288
singularities – 148, 820
size structure – 997
small mammals (Micromammalia) – 965
social rank - 125
soil – 396
soil chemical characteristics – 733
soil conditioners – 354
soil herbicides – 583
soil layers – 348
soil mezofauna – 742
soil properties – 722
soil texture – 626
soil variation – 722
somatic cell count – 451
soundgrams – 133
sowing rate – 315
soybean – 227, 539
spatial dependency – 722
spatial pattern – 997
specialty food products – 834
species composition - 49
specific energy consumption – 752
spectrograms – 133
Spelt wheat – 752
stability – 595
stability analysis – 651, 905
standardized commodities – 651
stem-reserve mobilization – 325
Storage – 191
subclinical muscular dystrophy – 511
subsidy – 240
sunflower – 348
sunflower meal – 153
sunflower oil- 827
susceptibility – 701
sustainability - 19
sustainable agriculture – 387
sustainable cotton – 418
sweet maize (Zea mays L. saccharata) – 668
sweet pepper (Capsicum annum L.) – 354
Syrphidae - 49

T
Tarsus fork-nose – 138
teat end – 451
technical efficiency – 418
technical efficiency – 846
Telli cheese – 763
temperament – 482
temperature and humidity index – 506
texture – 763
thermal transitions temperature – 429
tillage – 794
tillage system – 789
tobacco – 92
tolerance – 934
tomato – 207, 682
tomato growing – 531
translocation – 912
treatments – 334
tree height-diameter relationship – 997
triticale – 325, 696
Turkey – 77, 240
Turkish Hazel – 883
type traits – 272

U
ultrasonography – 144, 942
ultrasound – 342, 493
UV-C – 191

V
vacuum state - 148
value chain analysis – 658
varieties – 696
variety – 185, 362
vegetables – 161, 749
vermicompost – 924
virus strains – 70
washed chicken meat – 429

W
water uptake – 1005
water use efficiency – 616
weed – 608
weed seed bank – 348
weeds – 227, 668
welfare – 125
West Balkan – 519
wheat – 29, 36, 103, 185, 240, 608, 789
wild animals – 133
wild boars – 971
wood ash – 354

Y
year -29
yield – 29, 83, 100, 171, 696
yield component - 36
yield components – 42
young apple orchard – 675

Z
Zn – 749