Growth Regulators in Orchard Management
University of California
Growth Regulators in Orchard Management

Pear

Annul Pear Reports

Annul Pear Reports Effects of Messenger on 'Bartlett' Pear Fruit Size and Cropping
Evaluation of effect of applications on fruit quality and yield in a commercial orchard in Yolo County. Submitted to the California Pear Advisory Board for 2003.
Annul Pear Reports Efficient Nitrogen Fertilization for Control of Vegetative Growth and Optimum Cropping, 2009
This project addresses efficiency of nitrogen use to optimize cropping and control of vigor through nitrogen management in pear. Submitted to California Pear Advisory Board for 2009.
Annul Pear Reports European Pear Growth and Cropping: Optimizing Fertilizer Practices Based on Seasonal Demand and Supply with Emphasis on Nitrogen Management, Interim Report
Determining the relationship between seasonal tissue N partitioning and concentration and tree productivity and growth, comparing typical and reduced N to validate recommended N management, and quantifying effects on crop load and fruit quality due to N, K and Ca as influenced by application. Interi...
Annul Pear Reports European Pear Growth and Cropping: Optimizing Fertilizer Practices Based on Seasonal Demand and Supply with Emphasis on Nitrogen Management, Interpretive Summary 2010
Use of three ‘Bartlett’ orchards with existing conditions that allow manipulation of nutrients. The orchards represent a range of yields of (20-32 t/A/yr), tree age, rootstock, soil and growing conditions. All are sampled annually for tissue nutrient levels, and irrigation water and soil N profiles....
Annul Pear Reports European Pear Growth and Cropping: Optimizing Fertilizer Practices Based on Seasonal Demand and Supply with Emphasis on Nitrogen Management, Interpretive Summary 2011
Use of three ‘Bartlett’ orchards with existing conditions that allow manipulation of nutrients. The orchards represent a range of yields of (20-32 t/A/yr), tree age, rootstock, soil and growing conditions. All are sampled annually for tissue nutrient levels, and irrigation water and soil N profiles....
Annul Pear Reports Inducing precocity in European pear: First year effects on growth
CPPU, with delayed heading and deblading and with heading back at the ‘grower’s’ timing, showed good increase in vegetative growth. Other treatments, including Promalin, MaxCel, MaxCel + CPPU, were tested, however, increases in shoot vigor were not signicant. Submitted to California Pear Advisory Bo...
Annul Pear Reports Inducing Precocity in European Pear: First Year Effects on Growth
In a six month period of growth, CPPU showed good increase in vegetative growth, as evidenced by an increase in trunk area and in total growth of new shoots. Submitted to the California Pear Advisory Board for 2008.
Annul Pear Reports Management of Dormant Sprays by Chill Accumulation in 'Bartlett' Pear, 2006
Determination of dormancy onset, and Use of the Dynamic Model and rest-breaking treatments to advance and tighten bloom. Submitted to the California Pear Advisory Board for 2006
Annul Pear Reports Management of Dormant Sprays by Chill Accumulation in 'Bartlett' Pear, Final Report, 2007
Calculation of chilling requirement, and use of the Dynamic Model (Fishman, 1987) to develop 'best' practice timing of application of dormant oil treatments. Submitted to the California Pear Advisory Board for 2007.
Annul Pear Reports Shoot Growth and Secondary Bloom Inhibition for Fire Blight Control in 'Bartlett' Pear
Single and multiple applications of Apogee, a growth retardant, significantly reduced shoot growth, thus potentially reducing fireblight infection. Submitted to the California Pear Advisory Board for 2003.
Annul Pear Reports Testing CPPU for Crop Load Management and Improved Fruit Quality in 'Bartlett' Pear
Evaluation of effects of CPPU applications on fruit size and quality in a non-commercial orchard. Submitted to the California Pear Advisory Board for 2007.
Annul Pear Reports Testing CPPU for Improving Fruit Quality in 'Bartlett' Pear, 2006
Evaluation of effects of CPPU applications on fruit size, quality and crop yield in a commercial orchard. Submitted to the California Pear Advisory Board for 2006.
Annul Pear Reports Updating Nutritional Strategies for Today’s California European Pear Industry
This slide show provides information on how to use Nitrogen to manage vigor and support cropping and high fruit quality in existing pear orchards. 2010.
Annul Pear Reports Use of BioForge and Plant Growth Regulators for Freeze Protection and Increasing Fruit Set: Preliminary Results
Evaluation of effects of applications to ameliorate freeze damage and improve in fruit set, particularly with freezing events. Submitted to the California Pear Advisory Board for 2007.
Annul Pear Reports Use of Plant Growth Regulators for Freeze Protection and Increasing Fruit Set, 2009
Applications of plant growth regulators made to ‘Bartlett’ pear before and after repeated freeze events did not improve yield or quality when compared to the untreated controls. Significant freeze and disfigurement damage was found in all treatments.Submitted to California Pear Advisory Board for 2...
Annul Pear Reports Using the Dynamic Model for Calculating Chill Accumulation in Bartlett Pear: Management of Dormant Sprays
Evaluation of effect of dormant oil treatment on fruit set and quality, and application of the Dynamic Model to calculate chill portions and evaluate the results with respect to bud break and flowering. Submitted to the California Pear Advisory Board for 2005.
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