PPD

(redirected from Plant Population Density)
AcronymDefinition
PPDPrepaid
PPDPost Paid
PPDPostpartum Depression
PPDPurified Protein Derivative (skin test agent; tuberculosis)
PPDPessoas Portadoras de Deficiencia (Portuguese: Persons with Disabilities; various locations)
PPDPostscript Printer Description
PPDPartido Popular Democrático (Popular Democratic Party, political party, Puerto Rico)
PPDPostponed (sporting events)
PPDPartnership for People with Disabilities (formerly Virginia Institute for Developmental Disabilities; Virginia Commonwealth University)
PPDPartido por la Democracia (Party for Democracy, Chile)
PPDPanasonic Plasma Display (Japan)
PPDPhiladelphia Police Department
PPDPay Per Download (sales)
PPDPresidential Policy Directive
PPDPermanent Partial Disability (insurance)
PPDPagan Pride Day
PPDPharmaceutical Product Development, Inc.
PPDPost-Potter Depression
PPDPoints per Day
PPDParanoid Personality Disorder
PPDPaid per Download (online advertising)
PPDPractice and Personal Development
PPDProcess and Product Design
PPDPsychopathic Personality Disorder
PPDPartners in Population and Development (various nations)
PPDPublic Power District (Nebraska)
PPDPseudo Processor Device
PPDPassenger Presence Detection
PPDPiezo Pumpe Duse
PPDProtection of Personal Data
PPDPrint Preview Dialog
PPDPlasma Panel Display
PPDPerl Package Distribution
PPDPacks Per Day (cigarettes)
PPDPartial Packet Discard
PPDPassenger Presence Detection (sensor)
PPDPer Patient Day
PPDParty for Democratic Prosperity (The Former Yugolsav Republic of Macedonia)
PPDPostScript Printer Definition
PPDPhoenix Police Department (Phoenix, Arizona, USA)
PPDPersonal & Professional Development
PPDPost Party Depression
PPDPersonal Protection Device
PPDPre Prosecution Diversion (criminal justice)
PPDPartito Popolare Democratico (Italian: People's Democratic Party; Switzerland)
PPDPounds Per Day (unit of measure for feeding chlorine gas with a rotameter tube)
PPDPublished Price to Dealer
PPDPortland Police Department
PPDPour Point Depressant
PPDPartia e Prosperitetit Demokratik (democratic prosperity party; Kosovo)
PPDPharmaceutical Products Division
PPDProcess Piping Designer
PPDPredicted Percentage of Dissatisfied (polling)
PPDPractitioner Professional Development (UK)
PPDProfessional Personal Development (various organizations)
PPDParaphenylene-Diamine (allergen)
PPDPersonal Property Division (JPPSO)
PPDPost-Partum Doula (childbirth)
PPDPresidential Protective Division (United States Secret Service)
PPDPoints Per Dart
PPDPlano Police Department (Plano, Texas)
PPDPhysician Practice Documentation (software)
PPDPayment Processing Direct (credit card processing)
PPDProgressive Pseudorheumatoid Dysplasia
PPDProposal Package Description
PPDPersonal Profile Data (health records)
PPDPrepare to Die (gaming)
PPDPlant Population Density
PPDPolish Pentax Days (photography)
PPDPresidential Program Directive (US DHHS)
PPDPlasmatic Pulsar Device (Star Trek)
PPDPharmacy Practice Division (University of Wisconsin)
PPDPresidential Protective Detail
PPDPublic Procurement Directives (European Commission)
PPDProgram for People with Disabilities
PPDPrediction Probe Detector
PPDProject Proposal Document
PPDProyecto de Pequeñas Donaciones (Spanish: Small Project Grants; Mexico)
PPDProject-Peculiar Document
PPDPatent Policy Directorate (Canada)
PPDPacket Pair Dispersion
PPDPoughkeepsie Police Department (New York)
PPDProduct Planning & Development
PPDProduction Program Definition (document)
PPDPhysical Page of Data
PPDPropulsion and Powertrain Division
PPDProgram Package Document
PPDPlans and Programs Detachment
PPDProject Plan Document
PPDPulse Position Data
PPDParts Per Deciliter
PPDPoint Positioning Data
PPDPostal Presort Defaults
PPDprepubertal diabetic
PPDProgram/Project Planning Document
PPDPrimary Power Distribution
PPDPrimary Policy Database (Safenet)
PPDProposed Plan Distribution
PPDProfessional Product Device
PPDPrincipals, Partners and Directors (consulting and auditing firms)
PPDPetroleum Production Division
References in periodicals archive ?
(2002) reported that increasing plant population density by two times significantly decreased both biomass and yield of individual plants for semi-determinate and indeterminate tropical soybean varieties.
Thus plant population density was the major determinant of seed yield given the modest increase in seed yield realized at the same inter-row spacing with changes in plant densities.
In [E.sub.2], treatments were arranged in a split plot design with three replicates, with plant population density as the main factor and hybrids as the subfactor.
At the same time, plant population density had no significant (p greater than 0.05) effect on the number of days to emergence.
These results are supported by Emam (2001) who verified that kernels ear-1 and kernels ear-1 row are the most important yield adjustment components in response to plant population density in maize.
The highest plant population density (400,000 plants/ha) suppressed weeds (weed score, 3.3 at 6 WAP) better than the lowest plant population (66,667 plants/ha) that had weed a score of 3.5 at 6 WAP.
In a companion paper (Edwards and Purcell, 2005) we noted that HI of MG V and VI cultivars had a negative response to increased plant population density. Data presented in Fig.
Plant population density was determined at approximately R1 (Fehr and Caviness, 1977) by counting plants in two separate 1-m segments of each plot.
Because a number of lines with improved tolerance to low N were obtained by selecting and inbreeding under high plant density, tolerance to high plant population density was suggested as an alternative breeding strategy to improve tolerance to diverse abiotic stresses including drought and low N (Vasal et al., 1997).
The total seasonal amount of pollen, P, was defined by the average pollen production per plant and the plant population density. The day of maximum pollen shed, [t.sub.x], typically occurs 2 or 3 d after anthesis (50% Beg Shed) (Bassetti and Westgate, 1994; Fonseca et al., 2003).
The plant population density was 58 687 plants [ha.sup.-1].
The experimental layout was a split-plot design with the main plots (plant population density) arranged in a randomized complete block and replicated four times.
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