Varietal Resistance of Sugar Beets to the Sugar-beet Root Aphid Pemphigus betae Doane (Homoptera: Aphididae)

1964 ◽  
Vol 96 (3) ◽  
pp. 520-522 ◽  
Author(s):  
A. M. Harper
Keyword(s):  
Sugar Beet ◽  
Leaf Spot ◽  
Spider Mite ◽  
Sugar Content ◽  
Sugar Beets ◽  
Beet Root ◽  
Resistant Varieties ◽  
Pemphigus Betae ◽  
Sugar Beet Root ◽  
Selection Of

AbstractTwo leaf-spot- and spider-mite-resistant varieties of sugar beets, GW 674 and GW 359, exhibited resistance to the development of populations of the sugar-beet root aphid, P. betae. GW 674 is a selection of GW 359 but has higher sugar content and greater leaf-spot resistance. Nine other varieties were susceptible to root aphid infestations.

Sugar-Beet Root Aphid, Pemphigus betae Doane (Homoptera: Aphididae), in Southern Alberta

1963 ◽  
Vol 95 (8) ◽  
pp. 863-873 ◽  
Author(s):  
A. M. Harper
Keyword(s):  
Low Temperature ◽  
Sugar Beet ◽  
Soil Temperature ◽  
Sugar Content ◽  
Beet Root ◽  
Southern Alberta ◽  
Pemphigus Betae ◽  
Sugar Beet Root ◽  
Poplar Tree

AbstractIn southern Alberta the fundatrix of P. betae hatches from the overwintered egg in late April and early May and feeds on an emerging leaf of P. angustifolia or P. balsamifera, forming a gall. In the gall it produces alate fundatrigeniae, which migrate from the poplars to beets and produce apterous alienicolae. This form of the aphid reduces both yield and sugar content of beet roots. During the summer several generations of alienicolae are produced. In the fall most of the alienicolae produce sexuparae. These migrate from beets to poplars, where they produce males and oviparae. Each fertilized ovipara lays a single egg on the bark of a poplar tree. The species may overwinter as eggs on the poplars or as alienicolae in the soil. The egg has an obligatory diapause that is terminated by exposure to low temperature. The fungatrigeniae migrate from late June to mid-August and the sexuparae from early September to late October. The potential reproductive capacities of the fundatrix, fundatrigenia, sexupara, and ovipara averaged 163, 13, 6, and 1, respectively. Under greenhouse conditions 20 aphids (alienicolae) produced 9,000 in 6 weeks when the soil temperature was maintained at 27 °C. Below 15 °C. the rate of reproduction was low and death was caused by exposure to 30 °C. for 6 weeks. The most important predators of P. betae were the anthocorid A. antevolens, the flies S. bigelowi, L. pemphigae and T. glabra, and a coccinellid Scymnus sp.

Notes on Behaviour of Pemphigus betae Doane (Homoptera: Aphididae) Infected with Entomophthora aphidis Hoffm.

1958 ◽  
Vol 90 (7) ◽  
pp. 439-440 ◽  
Author(s):  
A. M. Harper
Keyword(s):  
Sugar Beet ◽  
Acyrthosiphon Pisum ◽  
Soil Surface ◽  
First Record ◽  
Department Of Agriculture ◽  
Beet Root ◽  
Pemphigus Betae ◽  
Below Ground ◽  
Sugar Beet Root ◽  
Annapolis Valley

Normally the sugar-beet root aphid, Pemphigus betae Doane, lives and feeds on sugar-beet roots below ground during the summer and fall. However, in many beet fields between Lethbridge and Monarch, Alberta, in September, 1956, a large number of these aphids were found on the soil surface and on the crowns and leaves of the plants. Many of the aphids had crawled up the plants and, even after death, remained clinging to the leaves (Fig. 1). This clinging reaction seemed similar to that of grasshoppers infected with Entomophthora grylli Fresen. Mr. R. B. Baird, Entomology Laboratory, Canada Department of Agriculture, Belleville, Ontario, identified the organism causing the disease destroying these aphids as Entomophthora aphidis Hoffm. This is the first record of this disease killing subterranean aphids in Canada. The only other reports of E. aphidis on root aphids are those of Maxson (1916) in Colorado and Charles (1941) in California. In Canada, it has been previously reported as a factor in control of the pea aphid, Acyrthosiphon pisum (Harr.), in the Annapolis Valley, Nova Scotia (MacLeod, 1953).

scholarly journals Fertilizer circulation and nitrogen balance in the agrophytocenosis of sugar beet when acidizing typical chernozem (study with 15n)

2021 ◽  
Vol 36 ◽  
pp. 03017
Author(s):  
A.S. Avilov ◽  
N.Ya. Shmyreva ◽  
A.A. Zavalin ◽  
O.A. Sokolov
Keyword(s):  
Sugar Beet ◽  
Sugar Content ◽  
Mineral Fertilizers ◽  
Nitrogen Compounds ◽  
Gaseous Nitrogen ◽  
Typical Chernozem ◽  
Sugar Beets ◽  
Beet Root ◽  
Combined Application ◽  
Root Crops

The studies were carried out under the conditions of a microfield experiment on typical chernozem (Belgorod region) with two soils (pH 5.0 and 6.5) with the addition of urea (enriched in 15N, 17.1 at. %) And effluents from a pig-breeding complex (PSC) at doses of 6 and 12 g N/m2 (against the background of phosphate and potash fertilizers, P6K6). The largest amount of nitrogen was consumed by sugar beets with the combined introduction of CCA and urea (25.8 g N/m2). When the soil was acidified to pHsalt 5.0, the consumption of nitrogen in mineral fertilizers decreased by 15-18%, soil ni-trogen – by 21-52%, and waste nitrogen – by 16%. At the same time, the immobilization of nitrogen in the fertilizer decreased by 13-18%, and the loss of gaseous nitrogen compounds increased by 47-108%. The effluent from the pig-breeding complex increased the immobilization of nitrogen in mineral fertilizers (by 38-46%) and reduced gaseous nitrogen losses (by 22-44%). The highest stability and productivity (root crop yield 1654 g/m2, tops yield 239 g/m2) was exhibited by agrophytocenosis on soil with pH 6.5 with the combined application of CCA and urea. When the soil solution was acid-ified to pH 5.0, the yield of beet root crops decreased by 30% and the yield of tops – by 24%. On soil with pH 5.0, fertilizers increased the sugar content in root crops by 0.2-1.3%, on soil with pH 6.5, they decreased by 1.3-2.0%.

scholarly journals Effect of soil potassium on yield and quality of diverse sugar beet genotypes

2011 ◽  
Vol 48 (No. 9) ◽  
pp. 418-423
Author(s):  
M. Antunović ◽  
D. Rastija ◽  
M. Pospišil
Keyword(s):  
Sugar Beet ◽  
Negative Correlation ◽  
Potassium Concentration ◽  
Sugar Content ◽  
Root Yield ◽  
Beet Root ◽  
Growing Seasons ◽  
Yield And Quality ◽  
Sugar Beet Root

Aiming at determination differences in leaf and root potassium concentration of diverse sugar beet genotypes as well as its effect on sugar beet root quality and yield. Investigations comprising 15 sugar beet genotypes (five multigerm lines, five hybrids and five monogerm lines) were carried out on two soil types (Calcic luvisol: L-1 and L-3 and Calcic gleysol: L-2 and L-4) during two growing seasons. Root yield of the investigated genotypes on Calcic luvisol (50 t/ha) was higher, than on Calcic gleysol (34 t/ha). In general, multigerm lines were known for the highest leaf potassium concentration (2.75%), lowest root one (3.78 mmol/100 g root), highest sugar content (13.8%) and best root extractable sugar (1.5%). Monogerm lines had the lowest leaf potassium concentration (2.51%), highest root one (4.24 mmol/100 g root), lowest sugar content (12.9%), and the poorest extractable sugar (10.7%). Root yield of the investigated hybrids (48 t/ha) was higher by 16% compared to multigerm lines yield (42 t/ha) and as much as 35% higher compared to monogerm lines (36 t/ha). Sugar beet root potassium was in significantly negative correlation with sugar content at three localities (L-1: r = –0.485**, L-2: r = –0.096, L-3: r = –0.687**, L-4: r = –0.337**) whereas at all four localities it was in negative correlation with extractable sugar (L-1: r = –0.634**, L-2: r = –0.407**, L-3: r = –0.930**, L-4: r = –0.749**). Potassium concentration in sugar beet leaf was in significant positive correlation with sugar content at three localities (L-1: r = 0.382**, L-2: r = 0.231, L-3: r = 0.717**, L-4: r = 0.516**).

Life History of the Sugar-Beet Root Maggot Tetanops myopaeformis (Röder) (Diptera: Otitidae) in Southern Alberta

1962 ◽  
Vol 94 (12) ◽  
pp. 1334-1340 ◽  
Author(s):  
A. M. Harper
Keyword(s):  
Life History ◽  
Sugar Beet ◽  
Sandy Soil ◽  
Sugar Beets ◽  
Beet Root ◽  
Southern Alberta ◽  
Tetanops Myopaeformis ◽  
History Of ◽  
Sugar Beet Root ◽  
Root Maggot

Sugar beets are grown on approximately 38,000 acres of irrigated land in southern Alberta and their culture is a stabilizing influence on the economy of the irrigated districts. The sugar-beet root maggot, Tetanops myopaeformis (Röder), has been a pest of sugar heets in the sandy soil areas of southern Alberta since 1955 and caused serious damage in the same area from 1934 to 1937. This insect has been a problem also in Manitoba, North Dakota, Idaho, Montana, Wyoming, Utah, and Colorado (Allen et al., 1959; Callenbach et al., 1957; Hawley, 1922; Jones et al., 1952; Maxson, 1948). Considerable experimental work has been done on the control of this pest in Alberta (Harper et al., 1961a; Harper et al., 1961b; Lilly et al., 1961), but there have been no detailed studies published on the life history of the insect in Canada and there is very little information from elsewhere. In 1922 Hawley published notes on the biology of the insect in Utah. The present paper describes the life history of T. myopaeformis in southern Alberta.

A REVIEW OF THE NEARCTIC SPECIES OF CHLOROPISCA (DIPTERA, CHLOROPIDAE),

1936 ◽  
Vol 68 (8) ◽  
pp. 170-177
Author(s):  
Curtis W. Sabrosky
Keyword(s):  
Life History ◽  
Sugar Beet ◽  
Beet Root ◽  
Pemphigus Betae ◽  
Sugar Beet Root

Some recently discovered changes in nomenclature led to the preparation of a synopsis of the Nearctic species of Chloropisca, which is presented with notes upon the distribution as checked by the writer and a key to the eleven known species. Chloropisca sulfurifrons Duda is included with some doubt.It is rather remarkable that among a group as common as Chloropisca so little is known regarding the life history and habits. Chloropisca glabra is the only species in which the life history is well known. Its larvae are predaceous upon root aphids,and are especially important predators of the sugar beet root aphis, Pemphigus betae Doane.

scholarly journals Estimation of new lines of multigerm pollinators of Verhnyatska selection sugar beets and their hybrids

2020 ◽  
pp. 56-62
Author(s):  
О. Dubchak ◽  
L. Andrieieva ◽  
L. Palamarchuk
Keyword(s):  
Sugar Beet ◽  
Sugar Content ◽  
Sugar Yield ◽  
New Combination ◽  
Sugar Beets ◽  
Heterosis Effect ◽  
High Selection ◽  
Best Parameter ◽  
To Receive ◽  
Selection Of

The paper highlights the assessment of Verhnyatska selection new combination valuable multigerm of lines – pollinators (МP) efficiency, МS of lines of a different origin and heterozis of hybrids created on their basis. Verhnyatska МP are productive, combination-valuable and plasticity, proved by the hybrid combinations with МS by materials of all skilled-selection stations of a network of Institute of biocrops and sugar beet. At the grade test of 2018 more successful were combinations with МS by lines Ivanivska and Bila Tserkva research selection station. Sugar yield in hybrids made 111.4–108.9 % on the average. A number of experimental hybrids line created with Verhnyatcka selection lines-pollinators in 2019 is listed among the best in sugar yield per hectare. The submitted hybrids STs191125 and STs191134 were characterized by a high parameter of productivity (117.6 and 113.8 % to the standard accordingly). A number of the best hybrids for study in variety ecological testing is selected. Heterosis effect was observed in some cross combinations. The best parameter on productivity (110.0 %) was in the hybrid STs191135 – МS originator of a line of Yaltushkivska RSS. Sugar yield and output were higher than the standard by 8.4 and 14.2 %. The satisfactory parameters of efficiency were observed in the STs190309 hybrid. Its productivity made 104.0 %, sugar yield – 104.1 %, sugar output – 111.8 % to the standard. Significantly high sugar output was in the hybrid STs190815 (119.6 %), where both components of crossing were of Verhnyatska selection. The parameters of productivity, sugar content and yield were 107.7, 100.9 and 109.2 %. Due to a genetic variety of initial materials and successful selection of parental components, their combinational ability and plasticity made it possible to receive new hybrids. Multigerm line-pollinators have high selection value of efficiency parameters. Key words: sugar beet, multigerm, pollinator, fertility, selection, hybrid, productivity.

Sign in / Sign up

Export Citation Format

Share Document