Author/Authors :
Abd El-Mohsen، Ashraf A نويسنده Agronomy Department, Faculty of Agriculture, Cairo University, El-Gamaa Street, P.O. Box12613 Giza , , Abdallah، Amany M نويسنده Agronomy Department, Faculty of Agriculture, Cairo University, El-Gamaa Street, P.O. Box12613 Giza , , Mahmoud، Gamalat O نويسنده Agronomy Department, Faculty of Agriculture, Cairo University, El-Gamaa Street, P.O. Box12613 Giza ,
Abstract :
ABSTRACT: Cultivar selection, time of planting and seeding rate is important factors that influence
flax growth and yield variables. The objectives of this study were to evaluate the effects of planting
date, seeding rate and their interactions on yield and yield components of two flax cultivars.
Cultivars, planting date and seeding rate had significant effects on flax yield and yield components.
In general, the interaction between planting date and seeding rate and between planting date and
cultivar was non significant. Results indicated that, no interaction occurred between cultivar and
each of planting date and seeding rate suggesting that planting date and seeding rate affected the
cultivars similarly. The two tested cultivars exhibited significant differences for almost traits. The
early planting on November 15 was superior to the other two dates on November 30 and December
15 for seed yield and yield components and straw, fiber yield and related traits. Maximum seed, oil,
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higher yield of flax cultivars Sakha 1 and Sakha 2. Significant linear relationship between planting
dates and each of seed and oil yield provides the clue that these traits are dependent upon planting
dates. Linear regression for planting date suggested that increase in one unit (15 days delaying) of
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Regression analysis indicated that seed and fiber yields was positively correlated with seeding rates
(r = 0.99 and r= 0.99) and increased linearly when the seeding rates increased from 140 to 180 kg
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straw and fiber yields ha was produced when seeding rate was applied at the rate of 180 kg ha
Therefore, early planting time November 15 with seeding rate 180 kg ha is recommended to obtain
planting date lead to decreased seed and oil yield by 162.7 kg ha and 63.66 kg ha , respectively.
ha . Finally coefficients of regression results suggest that an increase by one unit (20 kg ha ) of
seeding rate lead to increase seed and fiber yields by 62.55 kg ha and 249.5 kg ha , respectively.
.
