Search Results

You are looking at 21 - 30 of 11,414 items for :

Clear All
Free access

C.G. Embree, B.H. Lesser and A.D. Crowe

The 30 apple (Malus domestica Borkh.) rootstock candidates selected for cold hardiness, known as the Kentville Stock Clone (KSC), with `McIntosh' and `Delicious' as scion cultivars, were compared at 11 years of age for tree size, weight, fruit yield, and crop efficiency under field conditions. Trunk cross-section area and tree weight were highly correlated. Tree size was similar for the two cultivars in most cases and ranged in size from semidwarf to very vigorous. Cumulative yield efficiencies varied by nearly two-fold and were not correlated with tree size. The most efficient rootstocks were KSC 28, KSC 7, and KSC 6 in the semidwarf, semivigorous, and vigorous size classifications, respectively.

Free access

Bernadine Strik and Gil Buller

The effect of early cropping (no removal of fruit buds the first two years) and in-row spacing (0.45 or 1.2 m) on growth and yield of `Duke', `Bluecrop', and `Elliott' northern highbush blueberries (Vaccinium corymbosum L.) was studied. Plants were grown on raised beds for four years. No yield was produced on the control plants in the planting year (year 1) and year 2. Plant growth at the start of year 3 was adversely impacted by early cropping in years 1 and 2. Early cropping reduced the dry weight of the root system, crown, and 1- to 3-year-old wood in all cultivars. `Bluecrop' plants had less total dry weight than those of `Duke' or `Elliott'. Roots accounted for 30% to 45% of the total plant dry weight depending on cultivar. Early-cropped plants had a lower percentage of fruit buds than control plants. Early cropping reduced yield 44%, 24%, and 19% in year 3, compared to control plants, in `Elliott', `Duke', and `Bluecrop', respectively. Cumulative yield (years 1 through 4) was similar between control and early cropped plants in `Bluecrop' and `Duke', whereas early cropping reduced cumulative yield in `Elliott' 20% to 40%, depending on in-row spacing. Plants spaced at 0.45 m produced 62% to 140% more yield per hectare than those spaced at 1.2 m, depending on cultivar. `Elliott' plants seemed less suited to high density planting due to their large root system.

Free access

Bing Shi and Wallace Pill

Growth Media

Free access

Jingwei Dai and Robert E. Paull

88 ORAL SESSION (Abstr. 528-533) FLORICULTURE: GROWTH AND DEVELOPMENT

Free access

Pamela J. Paulsen and David Hensley

90 POSTER SESSION 14 Growth Regulators/Cross-Commodity

Free access

Cheryl Hamaker, William H. Carlson, Royal D. Heins and Arthur C. Cameron

107 POSTER SESSION (Abstr. 665–676) Growth and Development–Floriculture

Free access

Allen D. Owings and Steven E. Newman

43 ORAL SESSION (Abstr. 438-444) WOODY PLANT GROWTH REGULATION

Free access

Yin-Tung Wang

43 ORAL SESSION (Abstr. 438-444) WOODY PLANT GROWTH REGULATION

Free access

Johnny Carter, B.P. Singh and W. Whitehead

48 POSTER SESSION 1F (Abstr. 051–067) Growth Regulators—Cross-commodity

Free access

Gerald L. Klingaman and G. Laurin Wheeler

43 ORAL SESSION (Abstr. 438-444) WOODY PLANT GROWTH REGULATION