Effects of the superokra leaf gene on cotton growth, yield, and quality

1972 ◽  
Vol 23 (2) ◽  
pp. 285 ◽  
Author(s):  
NJ Thomson
Keyword(s):  
Leaf Tissue ◽  
Growth Yield ◽  
Row Spacing ◽  
Research Station ◽  
Nitrogen Application ◽  
Seed Cotton ◽  
Normal Leaf ◽  
Yield And Quality ◽  
Narrow Row ◽  
North Western

No significant lint or seed cotton yield differences were found between a normal leaf cultivar of cotton and its near-isogenic superokra leaf counterpart in three experiments over three seasons at Kimberley Research Station in north-western Australia. There were also no significant interactions for lint yield of the two lines with variations in inter-row spacing and nitrogen application. Differences in quality between the two were also slight and of no commercial importance. The superokra leaf gene, however, caused earlier maturity and decreased production of leaf and stem tissue. Biologically superokra leaf was more efficient, with a greater production of seed cotton per unit of leaf tissue than for the normal leaf. Superokra leaf led to increased difficulty of weed control in conventional 1-metre cotton culture, but it appeared a desirable factor to transfer to cultivars bred for narrow-row high density cotton.

Narrow row cotton in the Namoi valley. 1. Growth, yield and quality of four cultivars

1977 ◽  
Vol 17 (84) ◽  
pp. 135 ◽  
Author(s):  
GA Constable
Keyword(s):  
Field Experiments ◽  
Growth Yield ◽  
Cultivar Differences ◽  
Fibre Strength ◽  
Row Spacing ◽  
Yield And Quality ◽  
Consistent Increase ◽  
Narrow Row ◽  
Crop Maturity

Field experiments were done in three successive seasons to determine the effects of cultivar and row spacing on growth, yield and quality of cotton. Narrow rows had a higher early season LAI than wide rows, but differences in LAI between row spacings disappeared by the peak flowering stage. Hopicala and Deltapine 16 had a higher LAI than Riverina Poplar and Super Okra M8. Narrow rows produced 28 per cent more fruiting points than wide rows, but this was not reflected as a consistent increase in yield, as fruit shedding was greater and boll size was smaller in narrow rows than in wide rows. Narrow rows yielded 44 per cent more than wide rows in 1972-73 but 7 per cent less in 1973-74 and 1 per cent less in 1974-75. Earlier crop maturity was obtained with narrow rows in all cultivars in 1974-75 and Hopicala only in 1972-73. Deltapine 16 and Super Okra M8 had the highest average yield at both row spacings, with Super Okra M8 having the highest yield at the first pick. No fibre properties were consistently affected by row spacing. Cultivar differences were as expected with the early maturing cultivar Riverina Poplar having the shortest fibres and the later maturing cultivar Hopicala having the greatest fibre strength.

scholarly journals Between-row spacing and local accession on the yield and quality of garlic

2016 ◽  
Vol 7 (1) ◽  
pp. 112 ◽  
Author(s):  
Jamal-Ali Olfati ◽  
Mohammad-Bagher Mahdieh-Najafabadi ◽  
Mohammad Rabiee
Keyword(s):  
Plant Density ◽  
Cultural Practices ◽  
Block Design ◽  
Growth Yield ◽  
Row Spacing ◽  
Fresh Market ◽  
Yield And Quality ◽  
High Plant Density ◽  
Plant Stand

Garlic is primarily grown for its cloves used mostly as a food flavoring condiment. Previous studies carried out on plant density indicate its direct influence on yield. Plant density depends on the genotype, environmental factors, cultural practices, etc. This study was established to determine the effects of different between-row spacing on growth, yield, and quality of four local accession of garlic. It was laid out on two-factorial Randomized Complete Block Design with three replications during two years. Four local accession of garlic (Langroud, Tarom, Tabriz and Hamedan) were culture in three between-rows spacing (15, 25 and 35 cm) during two years. The results of two cultivated years were different. Plant density changed when garlic cultured with different between row spacing. In present research plant yield increased when the lower between row spacing and high plant density were used but the yield improvement occurring at increased plant stand is offset by the reduction in bulb size and some quality indices such as total phenol and antioxidant which severely affects quality and market value, when garlic is produced for fresh market.

The effect of nitrogen fertilizers on irrigated cotton at the Kimberley Research Station, north-western Australia

1965 ◽  
Vol 5 (18) ◽  
pp. 218 ◽  
Author(s):  
NJ Thomson
Keyword(s):  
Plant Size ◽  
Nitrogen Fertilizers ◽  
Research Station ◽  
Nitrogen Application ◽  
High Nitrogen ◽  
Lint Percentage ◽  
Soil Nitrification ◽  
Varied Response ◽  
North Western ◽  
Very High

Three experiments were carried out at Kimberley Research Station, W.A., between 1959 and 1963 to study the effects of rates and times of applying nitrogen fertilizer to irrigated cotton. Nitrogen applications increased yields in all three experiments but the magnitude of response varied. Response to nitrogen was greater after a short dry season fallow between crops than after a long fallow with accompanying soil nitrification. Very high nitrogen applications produced rank plant growth. The rank growth resulted in inefficient mechanical harvesting and the control of Prodenia litura was made difficult. Plant size was reduced by splitting the nitrogen application but yield was not reduced. Nitrogen applications had no effect on quality but reduced lint percentage slightly.

scholarly journals Effect of Organic and Inorganic Sources of Fertilizers on Growth, Yield and Quality of Bidi Tobacco (Nicotiana tabacum L.) Variety GABT 11

2020 ◽  
pp. 1-6
Author(s):  
K. M. Gediya ◽  
Jalpa P. Panchal ◽  
D. H. Desai ◽  
G. M. Padhiyar
Keyword(s):  
Ammonium Sulphate ◽  
Tobacco Plant ◽  
Growth Yield ◽  
Cost Ratio ◽  
Research Station ◽  
Net Income ◽  
Green Manuring ◽  
Yield And Quality ◽  
Bidi Tobacco

A field experiment was conducted at Bidi Tobacco Research Station, Anand Agricultural University, Anand for four years from 2014-15 to 2017-18 with the objective to study the effect of organic and inorganic sources of fertilizers on growth, yield and quality of bidi tobacco variety GABT 11. Results revealed that different manures and fertilizers failed to exert their significant effect on yield of bidi tobacco variety GABT 11 during all four years and in its pooled. Green manuring every year with sunnhemp recorded significantly maximum leaf size viz. leaf length and width followed by application of FYM @ 12.5 t/ha every year. Besides, Application of 180 kg N/ha through ammonium sulphate gave significantly higher tobacco plant height over application of 180 kg N/ha through castor cake and application of 135 kg N/ha through ammonium sulphate + 90 kg P2O5/ha through single super phosphate + 135 kg K2O/ha through sulphate of potash. Maximum monetary returns with benefit: cost ratio of 2.68 accrued with treatment of 180 kg N/ha through Ammonium sulphate. Among different bulky manures, green manuring with sunnhemp every year gave maximum gross income and net income with BCR value 2.43.

scholarly journals The Effects of Different Tillage Systems and Cultivars on Growth, Yield and Quality of Zucchini (Cucurbita pepo L.) in a Semi-Arid Sub-Tropical Environment

2019 ◽  
Vol 8 (2) ◽  
pp. 49
Author(s):  
Phiwokwakhe A. Dlamini ◽  
Michael T. Masarirambi ◽  
Paul K. Wahome ◽  
Mfanzile A. Dzimba
Keyword(s):  
Growth Yield ◽  
Research Station ◽  
Agricultural Crop ◽  
Marketable Yield ◽  
Tillage Systems ◽  
Area Index ◽  
Minimum Tillage ◽  
Yield And Quality ◽  
Tillage Methods

Conservation agriculture is a concept for resource-saving agricultural crop production system that serves to achieve acceptable profits and sustaining production while conserving the environment. The popularity of zucchini also known as baby marrow in the Kingdom of Eswatini has increased in recent years specifically for its economic value in the foreign market. This study was carried out at Malkerns Research Station, Malkerns in the Middleveld of the Kingdom of Eswatini to assess the effectiveness of different tillage methods and cultivars on growth, yield and quality of zucchini. The tillage methods used were zero, basin and mulch tillage. Furrow tillage was used as a control. The results showed that tillage methods had significant (P<0.05) differences in growth and yield of zucchini. Minimum tillage plants exhibited lowest number of leaves (9.5), vine length (36.4 cm), leaf area index (2.5) and number of flowers (6), number of fruits (1.3) and marketable yield/plant (4.6 ton/ha). Non-significant (P>0.05) differences were obtained from plants grown under basin, mulch and furrow tillage. The highest vine length (69.6cm), leaf number (17.0), LAI (3.6), and marketable yield (15.7 ton/ha) were obtained in zucchini plants grown under basin tillage system. However, there were no significant (P>0.05) differences in accumulation in leaves of zucchini plants of mineral content. In terms of the cultivars there were no significant (P>0.05) differences in vegetative growth. Star 8023 showed superiority in terms of number of fruits and marketable yield. It was observed that minimum tillage was less suitable in zucchini production as compared to other tillage systems. For higher production in zucchini, basin, furrow and mulch may be used. The best cultivar to use is star 8023.

Timing of nitrogen application to macadamias. 3. Reproductive growth, yield and quality

1989 ◽  
Vol 29 (4) ◽  
pp. 581 ◽  
Author(s):  
RA Stephenson ◽  
EC Gallagher
Keyword(s):  
Growth Yield ◽  
Stepwise Multiple Regression ◽  
Nitrogen Application ◽  
Yield And Quality ◽  
Macadamia Integrifolia ◽  
Forward Stepwise ◽  
Yield Responses ◽  
Low Nitrogen ◽  
Optimum Production

Depression of flowering in macadamias (Macadamia integrifolia Maiden and Betche) was associated with low nitrogen (N) status following 1 application of N (690 g N/tree.year) in summer of the first season and in control trees (monthly applications totalling 230 g N/tree.year) in the second and third seasons. Yield responses to N were observed only in the second and subsequent seasons. Yields of commercially acceptable nuts were higher, and small reject nuts lower, than nuts produced by control trees. Nut quality from control trees was as good as, and in many cases superior to fertilised trees receiving the higher rate of N in 1 application at various times through the year. Forward stepwise multiple regression analyses indicated the importance of time and extent of vegetative flushing, total annual tree growth and carbohydrate reserves stored in tree trunks on nut yield and quality. An appreciation of these factors can be used to guide management decisions for optimum production and quality of macadamias.

Effect of Plant Density and Nitrogen Application on the Growth, Yield and Quality of Radish (Raphanus sativus L.)

2005 ◽  
Vol 4 (3) ◽  
pp. 225-229 ◽  
Author(s):  
M. El-Desuki ◽  
S.R. Salman . ◽  
M.A. El-Nemr . ◽  
A.M.R. Abdel-Mawgoud .
Keyword(s):  
Raphanus Sativus ◽  
Plant Density ◽  
Growth Yield ◽  
Nitrogen Application ◽  
Yield And Quality ◽  
Raphanus Sativus L

The superokra leaf gene and short-season cotton breeding

1979 ◽  
Vol 19 (100) ◽  
pp. 575
Author(s):  
NJ Thomson
Keyword(s):  
New South ◽  
Row Spacing ◽  
Research Station ◽  
Recurrent Parent ◽  
Normal Leaf ◽  
Backcross Population ◽  
South Wales ◽  
The Mean ◽  
Short Season ◽  
Selection For

The performance of superokra leaf backcross progenies was compared with their normal leaf recurrent parent in two experiments in two successive seasons at Narrabri Research Station in the Namoi River Valley of New South Wales. The first experiment used standard 1 m row spacing and the second both standard and twin-row spacing (two rows sown 25 cm apart on 1 m beds). Other varietal comparisons including short-season and standard types, and normal and superokra leaf types were also made. The mean yield of 220 superokra progenies was 8.4% less than their recurrent parent in the first experiment. The mean yield of 14 of these was 1.2% greater in the second experiment. The superokra leaf progenies were earlier maturing and had a higher lint percentage. Strength and fineness of the progenies compared with the parent varied between experiments. Although mean staple length of the superokra leaf progenies was shorter than the recurrent parent it was demonstrated that selection for longer staple without yield sacrifice was feasible in the backcross population. All short season varieties tested had deficiencies of yield or quality compared with desired standards. The normal leaf Tamcot SP-37 and the superokra leaf M8 variety appeared to have the best combination of earliness and other attributes. There were no significant variety interactions with row spacing. Further study is needed to clarify the usefulness of the superokra leaf gene, because of quality deficiencies and apparent greater instability of varietal performance associated with the gene.

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