scholarly journals Paddy Rice Growing in Upland Field : The adaptability to row spacing and sowing date

1960 ◽  
Vol 29 (1) ◽  
pp. 19-22 ◽  
Author(s):  
Shinichi HASEGAWA ◽  
Giichi TAKEMURA ◽  
Kanenori NAKAYAMA
Keyword(s):  
Sowing Date ◽  
Paddy Rice ◽  
Row Spacing ◽  
Upland Field

Evaluation of soybean breeding lines by examining their responses to sowing date and row spacing

1987 ◽  
Vol 27 (5) ◽  
pp. 721 ◽  
Author(s):  
IA Rose
Keyword(s):  
Protein Concentration ◽  
Sowing Date ◽  
Photoperiod Sensitivity ◽  
Row Spacing ◽  
Breeding Lines ◽  
Cultivar Selection ◽  
Sowing Dates ◽  
Oil Concentration ◽  
Standard Cultivar ◽  
Late Sowing

Seven genotypes, including 5 in the final stages of cultivar selection, were evaluated for their phenological development, yield, seed size, oil concentration and protein concentration in response to changes in sowing date and row spacing over 3 seasons, 1982-83, 1983-84and 1984-85. Genotype x sowing date interactions were detected for both phenological development and yield, particularly with the cultivar Sxy 59. This genotype was most affected by temperature during the pre-flowering phase of early November sowings. It was lower yielding in November sowings but was the highest yielding genotype in January sowings. Its adaptation to January sowings was unexpected because this genotype also showed high photoperiod sensitivity and flowered and matured rapidly in the late sowings. With early sowing, yield of the other cultivars was equivalent, or superior to (P=0.05), that obtained with the recommended early December sowing date, depending on the season. Late sowings caused yield reductions of about 34%. Increases in yield with narrow rows (50 v. 100 cm) were significant (P = 0.05) in 1 season and averaged 5% overall. Genotypexrow spacing interactions were only detected in 1 season, but no genotype was superior to the standard cultivar, Forrest, in adaptation to narrow rows. Thus this study revealed genotype responses which would affect adoption of newly released cultivars. It was concluded that this type of study is valuable in the final stages of a selection program and that these studies should include both early and late sowing dates and be conducted over several seasons.

Effect of sowing date, row spacing and orientation on growth and yield of Bt cotton hybrid in southwest Punjab

2021 ◽  
Vol 58 (3) ◽  
pp. 446-450
Author(s):  
Abhishek Dhir ◽  
Raj Kumar Pal ◽  
P.K. Kingra ◽  
S.K. Mishra
Keyword(s):  
Sowing Date ◽  
Growth And Yield ◽  
Row Spacing ◽  
Bt Cotton ◽  
Cotton Hybrid

Water Use and Root Length Density ofCupheaspp. Influenced by Row Spacing and Sowing Date

2004 ◽  
Vol 96 (5) ◽  
pp. 1475-1480 ◽  
Author(s):  
Brenton S. Sharratt ◽  
Russ W. Gesch
Keyword(s):  
Water Use ◽  
Root Length ◽  
Root Length Density ◽  
Sowing Date ◽  
Row Spacing

Sowing date, sowing depth, seed rate and row spacing of wheat and barley under dryland conditions

1984 ◽  
Vol 9 ◽  
pp. 151-162 ◽  
Author(s):  
I. Photiades ◽  
A. Hadjichristodoulou
Keyword(s):  
Sowing Date ◽  
Row Spacing ◽  
Sowing Depth ◽  
Seed Rate

Some factors influencing the development of sunflower (Helianthus annuus L.) under dry-farming systems in Sudan

1981 ◽  
Vol 97 (1) ◽  
pp. 45-53 ◽  
Author(s):  
F. M. Khalifa
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Cultural Practices ◽  
Farming Systems ◽  
Sowing Date ◽  
The Other ◽  
Row Spacing ◽  
Sowing Dates ◽  
Supplementary Irrigation ◽  
Rainfed Conditions

SUMMARYAn experiment was carried out over a 3-year period at two locations in the central rainlands of Sudan under rainfed conditions at one site and under supplementary irrigation at the other to study the effects of cultivars and cultural practices on growth and grain yield of sunflower. Four cultivars, namely, Manohurian, Peredovik, Hungarian-A and Hungarian-B and four intra-row spacings of 15, 30, 45 and 60 cm (in rows 60 cm apart) were tested with three sowing dates starting on 15 July and following at 15-day intervals. Manchurian outyielded the other three varieties under supplementary irrigation whereas under rainfed conditions the reverse was true. This was attributed to the relative earliness in flowering of the varieties and their moisture requirements. Manchurian was the tallest with the thickest stem and a larger head at both locations compared with the other three varieties. Under rainfed conditions, the early sowing date of 15 July gave a significantly higher grain yield than the other two sowing dates, with the last sowing date of 15 August giving significantly least. This is attributed to decreasing moisture availability with delayed sowings. But under supplementary irrigation the effect of sowing date was less marked. Contrasting effects of sowing dates on plant height and stem circumference were obtained under the two systems of production. Under rainfed conditions there was a decrease in plant height and stem circumference with delayed sowing, whereas under supplementary irrigation the reverse was true. A contrasting response of plant height to spacing was also obtained; wider intra-row spacing was associated with taller plants under rainfed conditions and shorter plants under supplementary irrigation. Wider spacing was associated with thicker stems and larger heads at both locations. On the evidence obtained, 45 cm intra-row spacing is recommended for rainfed planting and 30 cm intra-row spacing for irrigated production of sunflower.

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