Results 271 to 280 of about 750,754 (312)
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Cone and Seed Yields from Slash Pine Seed Orchards
Southern Journal of Applied Forestry, 1994Abstract The Cooperative Forest Genetics Research Program (CFGRP) initiated a slash pine (Pinus elliottii Engelm. var. elliottii) seed orchard management recording system (SOMRS) in 1985 to quantify cone and seed yields of slash pine orchards in the cooperative program.
Gregory L. Powell, Timothy L. White
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Seed yield and yield components of creeping bentgrass cultivars
Canadian Journal of Plant Science, 2004Creeping bentgrass (Agrostis stolonifera L.) is a high-value turfgrass species that offers opportunities for western Canadian seed companies and producers. The objective of this study was to evaluate creeping bentgrass seed yield and the relationship between seedhead density and seed yield across a diverse range of cultivars.
D. J. Cattani +4 more
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Seed yield, seed size and germination behaviour in the annualPogogyne abramsii
Oecologia, 1990Models of the evolution of seed dormancy reveal that dormancy is favoured either when opportunities for establishment vary over time and when there is wide variation in the probability of success, or when the probability of success is limited by frequency dependence.
Charles, Zammit, Paul H, Zedler
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THE INFLUENCE OF SEED SIZE AND SEEDING RATE ON YIELD AND YIELD COMPONENTS OF BARLEY
Canadian Journal of Plant Science, 1963Field experiments with three seed sizes and three seeding rates of each of three barley varieties were conducted in 1959 and 1960 at Edmonton and Lacombe, Alberta. Data were obtained on emergence, culm counts, grain yields, and 1000-kernel weights.
Ahmet Demirlicakmak +2 more
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Yield variability among Katahdin seed sources
American Potato Journal, 1962Considerable yield differences were found among certified Katahdin seed sources. Some of this variability may be due to virus X and some due to cultural and storage practices. The amount of variability deviates from year to year. These differences in yield among sources might possibly be minimized through cultural and storage techniques in the seed ...
R. L. Sawyer, R. C. Cetas
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Effects of Clipping on Red Clover Seed Yields and Seed‐Yield Components1
Crop Science, 1966The effects of clipping on seed yields and seed‐yield components of four red clover varieties were determined from 1962 to I965 on 2nd‐ and 3rd‐year stands. The varieties ‘Altaswede,’ ‘Dollard,’ ‘Kenland,’ and ‘Pennscott’ were selected to provide a range of types froln single‐cut to double‐cut. Unclipped plots and plots clipped on May 1 produced higher
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Have Biotech Seeds Increased Maize Yields?
2010Corn yield is determined by soils, weather, seed used and other technology choices. Global population and per capita income growth trends as well as demand from the energy sector have placed great stress on cropland use. Global cropland acres and/or yield per acre will need to increase.
Xu, Zheng +5 more
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Colonoscopies for patients aged 45–49 years yield positive results
Ca-A Cancer Journal for Clinicians, 2022exaly