Seeding Date, Plant Density, and Cultivar Effects on Chickpea Yield and Seed Size in Eastern Oregon

2006 ◽  
Vol 5 (1) ◽  
pp. CM-2006-0621-01-RS ◽  
Author(s):  
Stephen Machado ◽  
Christopher Humphreys ◽  
Brian Tuck ◽  
Mary Corp
Keyword(s):  
Seed Size ◽  
Plant Density ◽  
Seeding Date

Chickpea, lentil and pea response to delayed spring seeding on the Northern Great Plains

2006 ◽  
Vol 86 (4) ◽  
pp. 1059-1070 ◽  
Author(s):  
P. R. Miller ◽  
S. A. Brandt ◽  
C. L. McDonald ◽  
J. Waddington
Keyword(s):  
Seed Size ◽  
Great Plains ◽  
Seed Yield ◽  
Growth Stage ◽  
Plant Density ◽  
Crop Yields ◽  
Crop Growth ◽  
Northern Great Plains ◽  
Summer Drought ◽  
Seeding Date

We compared the effects of spring seeding date on stand density, crop growth, seed yield, water-use-efficiency, and grain quality of three pulse crops [chickpea (Cicer arietinum L.), lentil (Lens culinaris Medik.) and pea (Pisum sativum L.)] grown at Scott and Swift Current, SK, during 1993 to 1997. Wheat (Triticum aestivum L. emend. Thell.) was used as a reference crop. Seeding date did not meaningfully affect plant density for chickpea, lentil or pea. Crop growth stage related to thermal time resulted in robust prediction equations for chickpea, lentil and pea (R2 = 0.87 to 0.98). When seeding was delayed 2 wk, the crop response was inconsistent. When seeding was delayed by 4 wk, consistent, mainly negative, effects on crop parameters occurred due to the exacerbation of summer drought stress. Pulse crop yields were more negatively affected by delayed seeding than were wheat yields. When seeding of chickpea, lentil, and pea was delayed 4 wk, seed yield decreased at the majority of site-years. When yield reductions occurred, the average reductions were 44, 38, and 31%, for the respective species. For chickpea and lentil, seeding delays of 2 and 4 wk decreased seed size at the majority of site-years with seed size reductions averaging 10% when they occurred. In the semiarid Northern Great Plains (NGP), chickpea, lentil, and pea should be seeded before spring wheat due to a greater risk of loss of yield and quality. Key words: Chickpea, growth stage, lentil, northern great plains, pea, seeding date

Effects of Seeding Date and Seed Size on Crassostrea gigas (Thunberg, 1793) Culture in a Subtropical Climate

2017 ◽  
Vol 36 (2) ◽  
pp. 303-313
Author(s):  
Simone Sühnel ◽  
Thais Picanço ◽  
Sthefanie Caroline Medeiros ◽  
Aimê Rachelmagentamagalhães ◽  
Claudiomanoel Rodrigues Demelo
Keyword(s):  
Seed Size ◽  
Crassostrea Gigas ◽  
Subtropical Climate ◽  
Seeding Date

scholarly journals Fall and spring seeding date effects on herbicide-tolerant canola (Brassica napus L.) cultivars

2004 ◽  
Vol 84 (2) ◽  
pp. 419-430 ◽  
Author(s):  
G. W. Clayton ◽  
K. N. Harker ◽  
J. T. O’Donovan ◽  
R. E. Blackshaw ◽  
L. M. Dosdall ◽  
...  
Keyword(s):  
Field Experiments ◽  
Plant Density ◽  
Early Spring ◽  
Yield Response ◽  
Management Options ◽  
Brassica Napus L ◽  
Seeding Date ◽  
Herbicide Tolerant ◽  
Root Maggot ◽  
Crops Yield

More flexible and effective weed control with herbicide-tolerant B. napus canola allows for additional seeding management options, such as fall (dormant) and early spring (ES) seeding. Field experiments were conducted at Lacombe and Beaverlodge (1999–2001), Didsbury (1999–2000), and Lethbridge (2000–2001), Alberta, Canada, primarily to evaluate the effect of fall (late October-November), ES (late April-early May), and normal spring (NS) (ca. mid-May) seeding dates on glufosinate-, glyphosate-, and imidazolinone-tolerant canola development and yield. Fall seeding resulted in 46% lower plant density and nearly double the dockage than spring seeding. ES-seeded canola had 19% higher seed yield and 2.1% higher oil content than fall-seeded canola. ES seeding significantly increased yield compared to fall-seeded canola for 8 of 10 site -years or compared to NS seeding for 4 of 10 site-years; ES-seeded canola equalled the yield of NS-seeded canola for 6 of 10 site-years. Yield response to seeding date did not differ among herbicide-tolerant cultivars. Seeding date did not influence root maggot damage. Seeding canola as soon as possible in spring increases the likelihood of optimizing canola yield and quality compared to fall seeding and traditional spring seeding dates. Key words: Dormant seeding, seeding management, root maggot, herbicide-resistant crops, yield components, operational diversity

scholarly journals Effects of seeding date and seeding rate on yield, proximate composition and total tannins content of two Kabuli chickpea cultivars

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Roberto Ruggeri ◽  
Riccardo Primi ◽  
Pier Paolo Danieli ◽  
Bruno Ronchi ◽  
Francesco Rossini
Keyword(s):  
Grain Yield ◽  
Plant Density ◽  
Ascochyta Blight ◽  
Climatic Conditions ◽  
Seeding Rate ◽  
Crude Fibre ◽  
Seeding Date ◽  
Cultivar Selection ◽  
Marked Resistance ◽  
Considerable Range

Experiments were conducted in open field to assess the effect of seeding season and density on the yield, the chemical composition and the accumulation of total tannins in grains of two chickpea (<em>Cicer arietinum</em> L.) cultivars (<em>Pascià</em> and <em>Sultano</em>). Environmental conditions and genetic factors considerably affected grain yield, nutrient and total tannins content of chickpea seeds, giving a considerable range in its qualitative characteristics. Results confirmed cultivar selection as a central factor when a late autumn-early winter sowing is performed. In effect, a more marked resistance to Ascochyta blight (AB) of <em>Sultano</em>, allowed better agronomic performances when favourable-to-AB climatic conditions occur. Winter sowing appeared to be the best choice in the Mediterranean environment when cultivating to maximise the grain yield (+19%). Spring sowing improved crude protein (+10%) and crude fibre (+8%) content, whereas it did not significantly affect the accumulation of anti-nutrients compounds such as total tannins. The most appropriate seeding rate was 70 seeds m–2, considering that plant density had relatively little effect on the parameters studied.

Yield response of narrow-leafed lupin plants to variations in pod number

1998 ◽  
Vol 49 (1) ◽  
pp. 63 ◽  
Author(s):  
J. A. Palta ◽  
C. Ludwig
Keyword(s):  
Seed Size ◽  
Seed Yield ◽  
Plant Density ◽  
Yield Response ◽  
Seed Number ◽  
Subsequent Removal ◽  
Seed Filling ◽  
Specific Number ◽  
Pod Number ◽  
Number Of Seeds

The effect of pod number on the seed yield and components of seed yield was examined for narrow-leafed lupin (Lupinus angustifolius L.) grown at a plant density of 36 plants/m2 in both the glasshouse and the field. Diflerent numbers of pods per plant in the glasshouse-grown lupin were generated by the application of N6-benzylaminopurine (BAP) to a specific number of flowers to ensure artificially that they set pods, and the subsequent removal of the remaining untreated flowers. Pod number ranged from 6 to 65 pods/plant in the glasshouse and was naturally distributed from 2 to 22 pods/plant in the field. Increases in seed yield per plant occurred as pod number per plant increased from 2 to 30 pods. No further increases in seed yield resulted when pod number per plant increased from 30 to 55 pods. Seed yield per plant was depressed as pod number increased from 55 to 65 pods. Seed size fell as pod number per plant increased over 20 pods and was less affected once the number of seeds per pod was reduced. The reduction in seed number per pod resulted from an increase in the number of seeds that aborted during seed filling. The data suggest that at a plant density of 36 plants/m2 there is potential for improving seed yield per plant by increasing the number of pods that reach maturity, provided it does not exceed 30 pods/plant. However, if consideration is given to producing large seeds, often preferred by buyers, the number of pods per plant should not exceed 20 pods.

Effect of seeding date and rate on desi chickpea in southern Alberta

2006 ◽  
Vol 86 (3) ◽  
pp. 717-721
Author(s):  
R. H. McKenzie ◽  
A. B. Middleton ◽  
E. Bremer
Keyword(s):  
Cicer Arietinum ◽  
Plant Density ◽  
Field Trials ◽  
Cicer Arietinum L ◽  
Seeding Date ◽  
Large Yield ◽  
Southern Alberta ◽  
Plant Densities ◽  
Seed Yields ◽  
Target Plant

Field trials were conducted at 12 location-years (sites) over a 4-yr period (2000–2003) to determine the response of desi chickpea (Cicer arietinum L.) to seeding date and rate in southern Alberta. Desi chickpea, cv. Myles, was planted on three dates at approximately 10-d intervals at target plant densities of 20, 40, 60, 80 and 100 plants m-2. Seed yields were close to maximum at seeding dates ranging from late April till mid-May, but further delays in seeding resulted in modest yield declines at two sites during the drought years and large yield declines at two sites in the wet year. The economic optimum plant density for desi chickpea increased with moisture availability, from 26 to 79 plants m-2. Under typical conditions in southern Alberta, optimum yields of chickpea were obtained with seeding dates prior to May 15 and seeding rates of 30 to 40 plants m-2. Key words: Cicer arietinum, yield, planting, sowing

Effects of Plant Density and Seeding Date on Accumulation and Translocation of Dry Matter and Nitrogen in Winter Wheat Cultivar Lankao Aizao 8

2009 ◽  
Vol 35 (1) ◽  
pp. 124-131 ◽  
Author(s):  
Hui-Juan QU ◽  
Jin-Cai LI ◽  
Xue-Shan SHEN ◽  
Feng-Zhen WEI ◽  
Cheng-Yu WANG ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Dry Matter ◽  
Plant Density ◽  
Wheat Cultivar ◽  
Winter Wheat Cultivar ◽  
Seeding Date
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