Effect of sowing date on bambara groundnut (Vigna subterranea L) yield and yield components in Swaziland

2007 ◽  
Vol 9 (1) ◽  
Author(s):  
A Sesay ◽  
CN Magagula
Keyword(s):  
Yield Components ◽  
Sowing Date ◽  
Bambara Groundnut ◽  
Vigna Subterranea ◽  
Yield And Yield Components

EFFECT OF SOWING DENSITY AND SEEDBED TYPE ON YIELD AND YIELD COMPONENTS IN BAMBARA GROUNDNUT (VIGNA SUBTERRANEA) IN WOODLAND SAVANNAS OF COTE D'IVOIRE

2009 ◽  
Vol 46 (1) ◽  
pp. 99-110 ◽  
Author(s):  
N'. J. KOUASSI ◽  
I. A. ZORO BI
Keyword(s):  
Seed Yield ◽  
Cote D'ivoire ◽  
Yield Components ◽  
Côte D’Ivoire ◽  
Growth Habit ◽  
Plant Biomass ◽  
Bambara Groundnut ◽  
High Density ◽  
Vigna Subterranea ◽  
Yield And Yield Components

SUMMARYBambara groundnut (Vigna subterranea) is one of the most promising food legumes in Africa, due to its agronomic and nutritional potential. To take advantage of these attributes, several research programmes gathering agronomic and genetic data are being implemented throughout Africa. In this context, the response of yield and yield components to sowing density and seedbed type were tested in a three-year (2005, 2006 and 2007) field experiment using a bambara groundnut landrace with a semi-bunch growth habit. Three plant population densities: 13 900 plants ha−1, 62 500 plants ha−1 and 250 000 plants ha−1 were coupled with two seedbed types – raised and flat. A factorial trial using a split-plot design with three replicates was set up to analyse seed yield and plant biomass, as well as nine yield components. Sowing density influenced significantly (p < 0.05) seed yield (direct relationship) and most of the yield components (inverse relationship). The highest seed yields were observed on high-density plots (4.11 ± 1.05 ha−1). In contrast, seedbed type and year of experiment did not influence significantly the marketable yield and plant biomass (p > 0.05). This result has been attributed to the suitability of the amount and distribution of rainfall and temperature for the production of bambara groundnut at the target site. Based on the trend of yield response, cultivation of landraces of bambara groundnut characterized by a semi-bunch growth habit at high density on flat seedbeds was suggested in woodland savannas of Côte d'Ivoire to enhance seeds yield and reduce labour.

Floret survival in wheat: significance of the time of floret initiation relative to terminal spikelet formation

1982 ◽  
Vol 98 (2) ◽  
pp. 257-268 ◽  
Author(s):  
E. E. Whingwiri ◽  
W. R. Stern
Keyword(s):  
Triticum Aestivum ◽  
Yield Components ◽  
Field Experiments ◽  
Treatment Time ◽  
Vascular System ◽  
Sowing Date ◽  
Nitrogen Application ◽  
Yield And Yield Components ◽  
Individual Grains ◽  
Initiation Period

SUMMARYWheat (Triticum aestivum L.) cv. Gamenya was grown in a Mediterranean type environment in two separate field experiments, to determine the effects of nitrogen application and date of seeding on floret survival. One treatment, intermediate in nitrogen level and sowing date, was common in both experiments. Rates and durations of spikelet initiation and durations of the floret initiation period were estimated. At maturity, yield and yield components were measured and occurrence of individual grains at each floret position on odd-numbered spikelets were recorded. The time of floret initiation relative to terminal spikelet formation and the subsequent occurrence of grain were examined.Florets developed first in spikelets 5-13 and last in spikelet 1. Added nitrogen hastened the initiation of florets but did not affect the number initiated; it also increased the numbers of grains per spikelet. In the last sowing date treatment, time to floret initiation decreased, but the sequence of floret initiation was unaffected.Numbers of florets and grains on tillers were less than on main shoots. Only about 28% of all florets initiated developed into grain.The main conclusion was that the florets which initiated before the terminal spikelet formed grain and those that initiated afterwards did not; we accordingly postulate that the vascular system between the rachis and the floret develops as the floret is initiated, but that after terminal spikelet formation, this is inhibited and further grains then fail to develop.

scholarly journals Effect of Sowing Date and Humic Acid Foliar Application on Yield and Yield Components of Canola Cultivars

2019 ◽  
Vol 25 (1) ◽  
pp. 70-78
Author(s):  
Fatemeh BAREKATI ◽  
Eslam MAJIDI HERVAN ◽  
Amir Hossein SHIRANI RAD ◽  
Ghorban NOOR MOHAMADI
Keyword(s):  
Humic Acid ◽  
Yield Components ◽  
Foliar Application ◽  
Sowing Date ◽  
Yield And Yield Components

scholarly journals Effects of Sowing Date on Physiological Characteristics, Yield and Yield Components for Different Maize (Zea mays L.) Hybrids

2017 ◽  
Vol 9 (1) ◽  
pp. 143-147
Author(s):  
Amir Taher RAH KHOSRAVANI ◽  
Cyrus MANSOURIFAR ◽  
Seyed Ali Mohammad MODARRES SANAVY ◽  
Kamal Sadat ASILAN ◽  
Hamed KESHAVARZ
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Block Design ◽  
Dry Weight ◽  
Sowing Date ◽  
Physiological Characteristics ◽  
Potential Productivity ◽  
Maize Hybrids ◽  
Significant Difference ◽  
Yield And Yield Components

In order to determine the effects of sowing date on physiological characteristics, yield and yield components of six sweet maize hybrids, an experiment was arranged in split plot based complete randomized block design with three replications. Sowing date in two levels (15 June and 1 July) and sweet maize hybrids in six variants (‘Chase’, ‘Temptation’, ‘Challenger’, ‘Basin’, ‘Obsession’ and ‘Ksc403su’) were the treatments. Results of ANOVA revealed significant difference of sowing date and sweet maize hybrids on the number of days for tassel emergence, number of days to anthesis, plant height, cob height, stem diameter, plant dry weight, cob dry weight, number of grain rows, length flowers, number of leaf above the cob, raffinose content of grain and grain yield. Mean comparisons showed that the highest grain yield was obtained for ‘Basin’ variety and it was obtained from the crop established on the 15th of June as planting date. In temperate regions, maize potential productivity seems to be more limited by the amount of solar radiation available around silking (determinant of grain set) than during grain filling (determinant of grain weight).

The Effect of Sowing Date on the Yield and Yield Components of Spring Oil-Seed Rape

1981 ◽  
Vol 97 (1) ◽  
pp. 189-195 ◽  
Author(s):  
D. H. Scarisbrick ◽  
R. W. Daniels ◽  
Mary Alcock
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Yield Components ◽  
Sowing Date ◽  
Main Stem ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Yield And Yield Components

SUMMARYThree spring oil-seed rape cultivars were drilled on five dates during 1979 and 1980. Delayed drilling (1) reduced seed yield, (2) increased the main stem contribution to seed production, and (3) increased the percentage of damaged pods at harvest. The results indicated that cultivars similar to those used in this trial should be drilled between the 3rd week of March and mid-April.

scholarly journals Effect of Sowing Date on Grain Yield and Yield Components of Wheat Cultivars under Dryland Condition

2021 ◽  
Vol 5 (4) ◽  
pp. 574-583
Author(s):  
Galdi Mohammad Bahalkeh ◽  
Abbas Biabani ◽  
Hossein Sabouri ◽  
Hossein Ali Fallahi
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Sowing Date ◽  
Wheat Cultivars ◽  
Yield And Yield Components
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