Record 234 of 382 - CRIS/ICAR 9/96 
TI:  LONGEVITY, HARDINESS, AND PRODUCTION PHYSIOLOGY OF FRUIT CROPS IN MIDDLE
GEORGIA 
IN:  YADAVA-U-L 
PO:  AGRICULTURAL RESEARCH STATION. FORT VALLEY STATE COLLEGE 
LO:  FORT VALLEY, GEORGIA 31030. 
FY:  1991 
RN:  S-00097 
CL:   
                  PRIMARY CLASSIFICATION                  GENERAL CLASSIF. 
         RPA     ACTVTY   CMMDTY   SCNCE    PRCNT           PRGM     JTC 
         R104    A4400    C0100    F0212     20%            P1.01    J1A 
         R205    A4600    C1000    F1312     20%            P3.13    J2B 
         R109    A4840    C0400    F1312     20%            P1.05    J1A 
         R304    A5000    C1000    F1312     20%            P3.13    J2A 
         R109    A7500    C0100    F1312     20%            P1.05    J1A 
PH:  R104 (Alternative-Uses-of-Land); 
     R205 (Disease-Control-Fruit,-Vegetables); 
     R109 (Weather-Adaptation-and-Modification); 
     R304 (Biological-Efficiency-Fruit,-Vegetables); 
     A4400 (Evaluation-of-Alternative-Uses); 
     A4600 (Protection-Against-Diseases,-Parasites); 
     A4840 (Protection-Against-Climatic-Extremes); 
     A5000 (Biological-Efficiency-of-Plants,-Animals); 
     A7500 (Research-Equipment-and-Technology); 
     C0100 (Soil-and-Land); 
     C1000 (Deciduous-and-Small-Fruits-and-Nuts); 
     C0400 (Air-and-Climate); 
     F0212 (Biology-Environmental,-Systematic-Plant); 
     F1312 (Physiology-Plant) 
GH:  P1.01 (Soil-and-Land-Use); 
     P3.13 (Fruit); 
     P1.05 (Weather-Modification); 
     J1A (Land,-Water,-Air); 
     J2B (Plant-Protection); 
     J2A (Plant-Production) 
SC:  S1010 (Deciduous-Tree-Fruits,-General) 10%; 
     S1030 (Berries-and-Cane-Fruits,-General) 20%; 
     S1050 (Edible-Tree-Nuts,-General) 10% 
DE:  PRUNUS-PERSICA; FRAGARIA; CARYA-ILLINOENSIS; PEACHES;
SHORT-LIFE-(PEACHES); HARDINESS; PLANT-HORMONES; GAS-EXCHANGE; INTER-CROPPING;
GERM-PLASM; ELISA-(ASSAY); PLANT-LONGEVITY; PLANT-PHYSIOLOGY; PECANS;
STRAWBERRIES; PLANT-DORMANCY 
CT:  Basic 60%; Applied 30%; Developmental 10% 
OB:  (1) Determine rootstock effect on scion hardiness, tree survival, and
orchard performance in relation to peach tree short life, (2) Evaluate peach
tree short life in perspectives of phytohormones and gas exchange activities,
(3) Investigate potential of strawberry cultivation in Georgia and its
feasibility for intercropping in peach and pecan. 
AP:  Rootstock effect on scion longevity and performance as related to peach
tree short life development, will be investigated to understand rootstock
physiology as influenced by scion hardiness, phytohormones, and gas exchange
activities. To evaluate rootstock potential of exotic peach germplasm cold
hardiness, water relations, and gas exchange activities of desirable genotypes
will be further studied in comparison with Lovell standard rootstock.
Development of peach tree short life syndrome and its association with gas
exchanges and phytohormone influence will be undertaken in microplots.
Selected strawberry cultivars will be evaluated for their cold hardiness,
response to gas exchanges and protective structures, feasibility for
intercropping in peach and pecan, and production in Georgia. Endogenous
phytohormones and their relations with peach tree short life, gas exchanges,
cold hardiness, and fruit production will be investigated using ELISA
microtechnique. 
PR:  9101 TO 9112 
     Seven peach plantings at the Fort Valley State College Agricultual
Research Station were involved in this project to investigate peach tree
physiology in relation to phytohormone, rootstock (RS), and gas exchanges.
Four peach trees in the regional RS planting, 6 in the phytohormone block, and
4 in jicroplots were killed by short life stresses. Rootstock showed trivial
effect on tree growth, however tree survival was significantly influenced by
rootstock, cultivar and planting soil. Due to unusually warm 1990-91 winter
season, no serious canker or cold damages were observed. Observations from the
phytohormone planting indicated that tree survival on Lowell RS was again
higher this year than on Siberian C. Tree mortality in microplot trial was
more frequent in short life than in non-short-life soil. No seedling trees of
Wild peach or Lovell died during this season. Redhaven peach planting of 1990
on Lovell, Nemaguard, and Wild peach RS was properly maintained. Gas exchanges
data on these trees were collected daily to determine cyclic pattern of these
activities, however, observations were discontinued after few weeks due to
weather interruptions. A planting of 144 trees consisting of 48 trees each of
Lovell, Nemaguard, and Wild peach seedlings, was established in fumigated and
non-fumigated short-life soil at the USDA Research Station, Byron, to study
physiological impact of rootstock and nematode on scion performance related to
short life stress. 
PB:  9101 TO 9112 
     YADAVA, U.L. 1991. Rootstock effect on short life performance of peach
during 12 years. Acta Horticulturae (in press). PUSEY, P.L. and YADAVA, U.L.
1991. Influence of Prunus nectrotic ringspot virus on growth, productivity,
and longevity of peach trees. Plant Disease 75:847-851. HARBER, R.M.,
NYCZEPIR, A.P., YADAVA, U.L. and SHARPE, R.R. 1991. Effect of rootstock,
pruning, and soil fumigation on dormancy and cold hardiness of 'Redhaven'
peach trees. HortScience 27:(accepted for production). YADAVA, U.L. 1991.
Effect of planting soil, rootstock, and phytohormone sprayson peach tree
survival in field microplots. HortScience 26(6):760 (abstract). 
PB:  9001 TO 9012 
     YADAVA, U.L. and RUSEY, P.L. 1990. Influence of Prunus Necrotic Ringspot
Viruson gas exchange activities of 'Redhaven' peach trees growing on Lovell
and Siberian C. rootstocks. Stone Fruit Tree Decline, 4th Workshop Proc.
ARS-82:1-7.YADAVA, U.L. 1990. Rootstock effect on short life performance of
peach during 12 years. Abstracts of contributed papers, 23rd Intl. Hort. Cong.
Aug. 27-Sept. 1, 1990. Firenze, Italy, 2:4183. YADAVA, U.L. 1989. Single leaf
gas exchange and chlorophyll content of 'Redhaven' peach as influenced by
peach seedling rootstocks. Proceedings of Southeastern Professional Fruit
Workers Conference 4:31-36. HARBER-STANG, R.M., NYCZEPIR, A.P., YADAVA, U.L.
and SHARPE, R.R. 1991. Effectof rootstock, pruning, and soil fumigation on
dormancy and cold hardiness of 'Redhaven' peach trees. HortScience 26:
(accepted for publication). PUSEY, P.L. and YADAVA, U.L. 1990. Influence of
Prunus Necrotic Ringspot Viruson growth, productivity, and short life-related
performance of peach trees. Plant Disease: (submitted). 
PB:  8901 TO 8912 
     YADAVA, U.L. 1989. Gas Exchange Performance of Lovell and Wild Peach
Seedlings. ASHS Programs and Abstracts 86:125. YADAVA, U.L. 1989. Effect of
Rootstock and Growing Season on Gas Exchange Activities in Peach. Eighth
Biennial Research Symposium 8:47. YADAVA, U.L. 1989. Gas Exchange and
Chlorophyll Content of "Redhaven" Peach asInfluenced by Peach Seedling
Rootstocks. Proceedings of Southeastern Professional Fruit Workers Conference
4:31-36 (Rept. #6). YADAVA, U.L. 1989. Comparison of Tree Performance and
Physiological Charactersof Three Himalayan Peach Lines with Lovell. Journal of
the American Society for Horticultural Science. (under review). YADAVA, U.L.
and DOUD, S.L. 1989. Rootstock and Scion Influence Growth, Productivity,
Survival, and Short-life-related Performance of Peach Trees. Journal of the
American Society for Horticultural Science. 114(6):875-880. 
PB:  8801 TO 8812 
     YADAVA, U. L. (1988). Influence of rootstocks on the bark thickness and
its relationship to the short life performance of peach trees. Fort Valley
State College Agricultural Research Station Technical Bulletin No. 107, 12p.
YADAVA, U. L., S. L. DOUD, D. J. WEAVER, and J. H. EDWARDS. (1988). Evaluation
of laboratory and field methods to assess cold hardiness and survival of peach
trees under natural freezing conditions. Fort Valley State College
Agricultural. YADAVA, U. L. (1988). Peach tree short life in perspectives of
gas exchange activities. Proceedings of 3rd Stonefruit Decline Workshop
3:54-64. YADAVA, U. L. (1988). Influence of freezing temperature and rootstock
on cold hardiness of 'Redhaven' peach. HortScience. 23:171 (abstract ).
YADAVA, U. L. and P. L. PUSEY. (1988). Influence of Prunus necrotic ringspot
virus on gas exchange activities of 'redhaven peach trees growing on Lovell
and Siberian C rootstocks. Proc. of 4th Stonefruit Decline Workshop 4:9-15. 
PB:  8701 TO 8712 
     YADAVA, U.L. 1987. Influence of abscisic acid (ABA) concentrations and
cultivars on single leaf gas exchange activities of strawberry plants under
greenhouse conditions. Proceedings of Plant Growth Regulator Society of
America 14:360-368. YADAVA, U.L. and MCCRARY, D. 1987. Phytohormones influence
single leaf gas exchange activities and the short-life related performance of
peach trees in theorchard. Plant Proceedings of Plant Growth Regulator Society
of America 14:395-403 JOHNSON, C., CARTER, J., SINGH, B. and YADAVA, U. 1987.
Minority research apprenticeship students in horticulture as recruitment tool.
HortScience 22(5):713 (abstract). YADAVA, U.L. and SINGH, B.P. 1987. Effect of
soil water content on gas exchanges of peach seedlings in the greenhouse.
Seventh Biennial Research Symposium 7:39 (abstract). YADAVA, U.L. and PUSEY,
P.L. 1987. Influence of Prunus necrotic ringspot viruson vegetative growth,
fruit production, and peach tree survival. HortScience 22(5):1136. 
OC:  001018 
IC:  001566 
SU:  Region 2 (Southern). 
PS:  TERMINATED 
UD:  8703 
UP:  9210 
PP:  9112 
      
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