EFFECT OF PASMO DISEASE OF FLAX ON THE YIELD AND QUALITY OF LINSEED OIL

1951 ◽  
Vol 29 (4) ◽  
pp. 339-351 ◽  
Author(s):  
W. E. Sackston ◽  
R. B. Carson

Heavy infections of pasmo significantly reduced the oil content of flaxseed and the iodine number of the oil. The effects of pasmo infection on oil content and iodine number of the oil were similar to those caused by a hot, dry climate. Oil content was affected similarly by pasmo infection and by flax rust infection, but the two diseases had dissimilar effects on iodine number of the oil. Greatest reductions in oil content and iodine number resulted from pasmo inoculations made when the flax plants were flowering. Inoculations made when the seed was ripening had little or no effect on yield and quality of linseed oil.

Author(s):  
Tayyaba Samreen ◽  
Muhammad Imran ◽  
Zahir Ahmad Zahir ◽  
Muhammad Zulqernain Nazir ◽  
Saima Noureen ◽  
...  

Author(s):  
Antonín Vaculík

Caraway has very low competitive ability against most of weed species. Therefore, it is important to choose a suitable herbicide control, especially at biennial caraway. The experiments with the herbicides applied in caraway were found in pure growth, with variety Kepron (with standard length of ve­ge­ta­ti­ve period). The aim of the trials was to find out the differences at achenes yiled and essential oil content after the treatment by the various herbicides, applied preemergently. Also, the selective ac­ti­vi­ty of individual herbicides was tested, including the different doses. The herbicides used in the ex­pe­ri­ments had enough level of selektivity on the plants of caraway. They had a positive effect on the yiled comparing to non-treated control variant in all observed years. There was no statistically significant difference in essential oil kontent between the treated variants and non-treated control. On the basis of these results, the most suitable herbicide was chosen for the „minor“ registration for caraway.


Author(s):  
Bholanath Saha ◽  
Sushanta Saha ◽  
Ritam Saha ◽  
G. C. Hazra ◽  
Biswapati Mandal

The effect of zinc (Zn), boron (B) and sulphur (S) on the yield and quality of groundnut in a field experiment with three levels of Zn (0, 5, 10 kg Zn ha<sup>−1</sup> as Zn-EDTA as basal), two levels of B (0 and 0.25% boric acid as foliar spray) and three levels of S (0, 25, 50 kg S ha<sup>−1</sup>as CaSO<sub>4</sub>.2H<sub>2</sub>O) in a factorial RBD were studied. Basal application of Zn @ 5 and 10 kg ha<sup><sup></sup>1</sup> caused an increase in nut yield by 3.7% and 28.3% respectively over control, whereas, application of S @ 25 and 50 kg ha<sup>−1</sup> increased the nut yield by 38.3% and 56.6% respectively over control. Conjoint application of Zn @ 10 kg ha<sup>−1</sup> and S @ 50 kg ha<sup>−1</sup> caused an increase in nut yield up to 73.4% over the control. Results, therefore, revealed that conjoint effect of S and Zn towards nut yield was more effective than that of B application. Application of Zn, S and B significantly increased their nutrient uptake in nuts. On an average, S, Zn and B uptake by groundnut ranged from 11.4 to 21.0 kg ha<sup>−1</sup>, 0.14 to 0.40 kg ha<sup>−1</sup> and 0.12 to 0.25 kg ha<sup>−1</sup>, respectively. Integrated mode of application of Zn, B and S showed a positive interaction as yield increase with their uptake in groundnut. Oil content in nuts ranged from 45.3 to 54.4%, while iodine value ranged from 97.8 to 90.5%. Application of S and Zn significantly increased the oil content, while it significantly decreased the iodine value in groundnut. So, application of micronutrients <italic>viz</italic>. Zn and B as well as S fertilization could be a useful strategy not only to increase the yield but also the quality of groundnut.


1986 ◽  
Vol 66 (4) ◽  
pp. 1037-1040 ◽  
Author(s):  
G. H. FRIESEN

In 26 field experiments over a 4-yr period, weed interference significantly reduced the oil content of flax seed (Linum usitatissimum L. ’Linott’) in 21 of the experiments and the iodine value of flax seed oil in 19 of the experiments, regardless of dominant weed species. Seed density and seed weight were not seriously affected by weed interference. Flax seed yields were reduced by weed interference in 25 of the experiments.Key words: Flax, weed competition, linseed oil


2021 ◽  
Vol 10 (20) ◽  
pp. 13-18
Author(s):  
Yasin Akinci ◽  
Mahmut Kaplan

Objectives of the present study are to determine the variations in forage yield and quality of soybean cultivars. Experiments were conducted in randomized complete blocks design with 3 replications during the growing season of 2016. A total of 10 cultivars were used as the plant material of the experiments (Bravo, A3127, Traksoy, İlksoy, Mersoy, Nova, SA-88, Arısoy, Safir, Atakişi). Cultivars had a significant effect on yield and chemical composition. Results revealed that green herbage yields varied between 826.39 - 1199.17 kg/da, dry hay yields between 247.71 - 357.90 kg/da, crude protein yields between 16.91 - 39.86 kg/da, acid detergent fiber (ADF) ratios between 26.56 - 34.61%, neutral detergent fiber (NDF) ratios between 38.43 - 44.85%, crude ash contents between 7.20 - 11.22%, crude protein contents between 6.66 - 13.53%, dry matter digestibility (DDM) values between 61.94 - 68.21%, dry matter intake (DMI) values between 2.68 - 3.12% and relative feed values (RFV) between 2.68 - 3.12. The results of the study showed that A3127 cultivar was found to be prominent with green herbage yield (1199.17 kg/da) and dry hay yield (357.90 kg/da) and Safir cultivar was found to be prominent with crude protein yield (39.86 kg/da). It was concluded that the soybean cultivars A3127 and Safir could be recommended for hay production.


1976 ◽  
Vol 12 (2) ◽  
pp. 163-176
Author(s):  
J. C. Davies

SUMMARYTrials are described comparing the effects of applying four, eight and 12 sprays of various insecticides on control of Heliothis armigera Hub, and Earias biplaga Wlk., and the consequent effect on yield and quality of seed cotton produced. Yields of unsprayed cotton ranged from 300–900 kg/ha, while four sprays of DDT gave 1000–1200 kg/ha. Increasing the number of sprays to 12, using three insecticides (DDT, endosulfan and carbaryl) gave increments of 300–600 kg/ha over the standard four spray treatment. Eight sprays gave smaller but significant yield increases, and endosulfan, dicrotophos and carbaryl were particularly promising in such regimes. A mixed DDT/phenthoate spray was not superior to DDT used alone. Spraying reduced the percentage of stained cotton.


2007 ◽  
Vol 87 (1) ◽  
pp. 13-26 ◽  
Author(s):  
C. L. Vera ◽  
R. K. Downey ◽  
S. M. Woods ◽  
J. P. Raney ◽  
D. I. McGregor ◽  
...  

Swathing is an important canola (Brassica napus L.) harvest operation in western Canada. The determination of the optimum timing for this operation is worth considering, as premature swathing may lead to reduced seed yield and quality. Seed yield and quality of three canola cultivars (44A89, AC Excel and Ebony), as affected by two seeding dates and several harvest times (six or eight swathing times and one direct combined treatment) was investigated on a Black Chernozem silty loam soil at Melfort, Saskatchewan, Canada, during 1998, 2000 and 2001. Seed yield, weight, protein content (oil-free meal basis) and oil content generally increased with seed development and swathing time. Early seeding was more conducive to achieving higher seed yield, especially in good growing conditions, and resulted in heavier mature seeds with higher oil content. Seed oil composition also changed during seed development. The proportion of oleic (C18:1) and linolenic (C18:3) acids increased, while that of myristic (C14:0), palmitic (C16:0), palmitoleic (C16:1), stearic (C18:0), linoleic (C18:2) and ara chidic (C20:0) acids decreased. The levels of the long chain fatty acids eicosenoic (C20:1) and erucic (C22:1) acids were unaffected. However, the overall amount of fatty acids synthesized (mg 100 seeds-1) increased as seeds matured. Swathing was advantageous over direct combining in preventing weather-induced shattering. Key words: Brassica napus, canola, fatty acid, oil, protein, seed development, seed quality, shattering, direct combining, swathing


1980 ◽  
Vol 60 (3) ◽  
pp. 923-928 ◽  
Author(s):  
JOHN O’SULLIVAN

The effects of plant spacing and irrigation at two rates of N in 1977 and 1978 and one rate of N in 1979 on yield and quality of pickling cucumbers (Cucumis sativus L.) harvested once-over was investigated. Plant populations significantly affected yield, with highest yields produced at the highest population of 64 plants/m2 each year. Irrigation and N rate had no significant effect on yield. Lack of soil moisture was not a limiting factor on yield during the critical growth stage of early fruit set in any year. Plant population also significantly affected fruit quality. In general, fruit quality decreased as plant population increased. Irrigation affected fruit quality only in 1977 while N rate affected quality in 1977 and 1978. Fruit color was affected by irrigation and N, but not by plant populations. Planting arrangement had no significant effect on yield or quality. Tissue N decreased with increasing population and irrigation in 1977 and indicated an increased demand for N when cucumbers are produced with irrigation at high plant density.


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