scholarly journals Genotypic Differences in Current Peanut (Arachis hypogaea L.) Cultivars in Phenology and Stability of These Traits under Different Irrigation Scheduling Methods

2010 ◽  
Vol 37 (2) ◽  
pp. 110-123 ◽  
Author(s):  
D. L. Rowland ◽  
J. P. Beasley ◽  
W. H. Faircloth
Keyword(s):  
Arachis Hypogaea ◽  
Growth Period ◽  
Irrigation Scheduling ◽  
Yield Potential ◽  
Reproductive Phenology ◽  
Genotypic Differences ◽  
Canopy Architecture ◽  
Arachis Hypogaea L ◽  
Scheduling Method ◽  
Peanut Cultivars

Abstract Understanding differences among peanut (Arachis hypogaea L.) cultivars in growth and phenology and the interactions with environment (G X E interactions) for these traits allows predictions for yield potential or performance in variable environments. Despite the importance of this information, very little quantitative data exists on the differences in aboveground growth, canopy architecture, and reproductive phenology for currently grown peanut cultivars. This study quantified differences in these traits among eight peanut cultivars and explored whether irrigation scheduling method (a factor of environment) affected the development in these traits through the season in 2004 and 2005. As expected, year to year variability in environmental conditions (most likely timing of rainfall events during the growing season) significantly affected growth habit across cultivars. However, the irrigation scheduling method, despite differences in total water applied among methods during the season, had no effect on any of the measured traits. This result is likely due to the fact that all methods were adequately supplying crop water demand. Genetic variability in all of the measured growth and phonological traits was strong despite the expectation that cultivars were genetically similar. Further, the lack of significant interactions between year and cultivar for most of the plant growth and reproductive characteristics also indicated a strong genetic component to these traits. One overall trend noted was that late-maturing cultivars had, on average, higher maximum values of LAI, stem mass, and leaf mass measured in the late growth period. Differences in isotopic composition were also strong among cultivars; the cultivars Georgia-02C and Tifrunner had significantly higher isotopic levels (and thus water-use efficiency) than Georgia-01R, Georgia Green, and AP3 across years. Aside from the obvious relationships between pod number and weight, the strongest predictors of reproductive output were late-season traits including leaf weight and LAI. This study successfully documented variability among peanut cultivars in many important traits linked to overall production.

Foliar Penetration and Phytotoxicity of Paraquat as Influenced by Peanut Cultivar1

1991 ◽  
Vol 18 (2) ◽  
pp. 67-71 ◽  
Author(s):  
G. Wehtje ◽  
J. W. Wilcut ◽  
J. A. McGuire ◽  
T. V. Hicks
Keyword(s):  
Arachis Hypogaea ◽  
Untreated Control ◽  
Field Studies ◽  
Yield Potential ◽  
Laboratory Studies ◽  
Foliar Absorption ◽  
Arachis Hypogaea L ◽  
Herbicide Treatments ◽  
Peanut Cultivars

Abstract Field studies were conducted over a three year period to examine the sensitivity of four peanut (Arachis hypogaea L.) cultivars (Florunner, Sunrunner, Southern runner, and NC 7) to foliar applications of paraquat (1, 1′-dimethyl-4, 4′-bipyridinium ion). Treatments included an untreated control and four herbicide treatments: paraquat applied alone at 0.14 and 0.28 kg/ha, or tank mixed with alachlor [2-chloro-N-(2, 6-diethylphenyl)-N-(methoxymethyl)acetamide] at 4.40 kg/ha. Weeds were hand-removed so that only herbicidal treatments were variables. Paraquat phytotoxicity did not differ between cultivars. No cultivar evaluated was abnormally sensitive nor tolerant to any paraquat-containing treatment. Laboratory studies utilizing radio labelled paraquat revealed that foliar absorption and translocation of paraquat did not vary between peanut cultivars. Yield differences were attributed to differences in yield potential between cultivars.

scholarly journals Agronomic Performance of a Spanish and Runner Cultivar Harvested at Six Different Digging Intervals1

1985 ◽  
Vol 12 (1) ◽  
pp. 50-54 ◽  
Author(s):  
A. C. Mixon ◽  
W. D. Branch
Keyword(s):  
Arachis Hypogaea ◽  
Coastal Plain ◽  
Market Value ◽  
Growth Period ◽  
Agronomic Performance ◽  
Experiment Station ◽  
Arachis Hypogaea L ◽  
Seed Market ◽  
Short Season

Abstract In a three year study (1980–1982) at the Georgia Coastal Plain Experiment Station, Tifton, Georgia, the full-season Florunner and the short-season Pronto cultivars were harvested at six 10-day intervals beginning 90 days after planting. For the 3-year average, peanut (Arachis hypogaea L.) plants from Florunner harvested at 110 and each succeeding 10-day growth period up to 140 days produced greater pod yields, sound-mature kernels, large and jumbo seed, and greater calculated market value than Pronto. However, seed market grade components and maturity indexes reflecting quality and maturity were impaired when peanuts were dug too early and varied among years and growth periods.

scholarly journals Peanut Peg Strength and Associated Pod Yield and Loss by Cultivar

2017 ◽  
Vol 44 (2) ◽  
pp. 77-82 ◽  
Author(s):  
R. B. Sorensen ◽  
R.C. Nuti ◽  
C.C. Holbrook ◽  
C.Y. Chen
Keyword(s):  
Arachis Hypogaea ◽  
Breeding Lines ◽  
Late Season ◽  
Pod Yield ◽  
Harvest Dates ◽  
Arachis Hypogaea L ◽  
Peanut Cultivars ◽  
Stems And Leaves

ABSTRACT Peanut (Arachis hypogaea L.) peg strength and associated pod yield and digging loss were documented for nine cultivars and two breeding genotypes across three harvest dates (early, mid, and late season) at two Southwest Georgia locations during 2010 and 2011. Cultivars selected were Georgia Green, Georgia Greener, Georgia-02C, Georgia-06G, Georgia-07W, Georgia-09B, Georgia-10T, Florida-07, Tifguard, and advanced breeding lines EXP27-1516 and TifGP-2. Prior to digging, a minimum of three peanut plants from each plot were selected and excess stems and leaves were removed with scissors leaving individual peanut pegs and pods with about 5-cm of stem. Each peanut pod was placed in a “U” shaped metal bracket attached to an electronic force gauge and the stem was pulled manually until the pod detached. After digging and combining, a tractor-mounted scavenger machine was used to collect pods remaining in the soil. Peg strength was greater at Dawson (6.14 N) compared to Tifton (5.28 N) in 2010 but were similar in 2011 (4.51 and 4.39 N, respectively). Dawson had consistently higher yields (5326 kg/ha) and lower pod loss (562 kg/ha) compared with Tifton (3803 kg/ha and 936 kg/ha, respectively). Peanut cultivars with greater peg strength across locations were Georgia-06G, Florida-07, and Georiga-02C. Cultivar Georiga-06G showed the greatest yield across locations and years. Other cultivars may have had stronger peg strength, greater pod yield, or lower pod loss but none were more consistent than these three cultivars across years, locations, and harvest dates.

scholarly journals Effect of Cultivars and Field Traffic on the Fruiting Patterns of Virgina Type Peanuts1

1981 ◽  
Vol 8 (2) ◽  
pp. 103-105
Author(s):  
R. Walton Mozingo
Keyword(s):  
Arachis Hypogaea ◽  
Intermediate Type ◽  
Growth Type ◽  
New Production ◽  
Similar Position ◽  
Probability Field ◽  
Arachis Hypogaea L ◽  
Peanut Cultivars ◽  
Production Practices ◽  
Growth Habits

Abstract Knowledge of the fruiting patterns of peanuts (Arachis hypogaea L.) is useful in determining the most feasible band widths for pesticides and other amendments, designing new peanut equipment and adapting new production practices for specific cultivars. The fruiting patterns and the effect of field traffic on these patterns were determined on five large-seeded Virginia type peanut cultivars with variant growth habits. Cultivars differed in fruiting patterns with the bunch growth type having a significantly higher percentage of their pods near the taproot than the runner types. The bunch types, NC 17 and NC-FLA 14 had 73.5 and 66.5% of their total fruit within a 13-cm wide section centered over the taproot whereas, the runners, VA 72R and Florigiant, and the intermediate type, NC 5, had 42.8, 45.5 and 45.3%, respectively, in a similar position. At the 0.05 level of probability, field traffic had no significant effect on the fruit distribution of the bunch cultivars, but NC 5, VA 72R and Florigiant (at 0.10 level) produced significantly less fruit on the side of the row subjected to field traffic during the fruiting season.

scholarly journals Evaluation of Improved Valencia Peanut Varieties for Production in Haiti

2020 ◽  
Vol 47 (1) ◽  
pp. 1-8
Author(s):  
A.M. Fulmer ◽  
T.B. Brenneman ◽  
R.C. Kemerait ◽  
R. Macajoux ◽  
D.A. Carroll ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Leaf Spot ◽  
Yield Potential ◽  
Average Increase ◽  
Cercosporidium Personatum ◽  
Central Plateau ◽  
Late Leaf Spot ◽  
Puccinia Arachidis ◽  
Arachis Hypogaea L ◽  
Plot Design

ABSTRACT Late leaf spot (Cercosporidium personatum) and peanut rust (Puccinia arachidis) are the most important diseases of peanut (Arachis hypogaea L.) in Haiti. Traditional Haitian peanut varieties are not only susceptible to these diseases but are also typically grown without benefit of a fungicide program. Five trials were conducted from 2015 to 2017 to evaluate the performance of six Valencia varieties in Quartier-Morin, Haiti (with an additional trial in 2017 at the Central Plateau) with respect to yield, resistance to rust and leaf spot diseases, and response to a fungicide program. A split-plot design with four or six replications was used in these studies. In each, “variety” was the whole plot and presence or absence of a fungicide program was the subplot. Valencia market types 309 Red, 309 Tan, M2, M3, SGV0801 and a local landrace were compared with and without Muscle ADV (tebuconazole + chlorothalonil, Sipcam) (2.3 L/ha) applied at 45, 60 and 75 days after planting (DAP). Final disease ratings (late leaf spot and peanut rust) were assessed approximately 94 DAP and plots were harvested the day following. In all trials, 309 Tan variety had the least amount of leaf spot and rust, but resulted in the lowest yield in four out of five trials, averaging 1727 kg/ha across fungicide treatments. M3, M2 and 309 Red were generally the numerically highest-yielding varieties, averaging 2906, 2864 and 2541 kg/ha across fungicide treatments, respectively, but were not statistically higher than the local Haitian Valencia, averaging 2374 kg/ha. Three fungicide applications during the season significantly increased yields in most trials for all varieties except 309 Tan. The highest and lowest average increase in yield from fungicide was for 309 Red (1126 kg/ha) and 309 Tan (103 kg/ha), respectively. The results from this study conducted over 2 years and 4 seasons document that while resistance to late leaf spot and rust is available in Valencia varieties, yield potential is not directly associated with that resistance. Also, use of fungicide improves yield potential in more susceptible varieties.

scholarly journals Variations and Phenetic Analysis of Peanut Cultivars (Arachis hypogaea L.) Based on Morphological Characteristics

2019 ◽  
Vol 4 (1) ◽  
pp. 24
Author(s):  
Purnomo Purnomo ◽  
Nurul Khotimah
Keyword(s):  
Arachis Hypogaea ◽  
Similarity Index ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Morphological Characters ◽  
Morphological Properties ◽  
Multivariate Statistical ◽  
Pair Group ◽  
Arachis Hypogaea L ◽  
Peanut Cultivars

Peanut (Arachis hypogaea L.) is a food commodity that is widely cultivated in Indonesia. At present there has been no analysis of the relationship between peanut cultivars with phenetic methods based on the morphological properties of the plants. Four cultivars of Arachis hypogaea L. Tuban, Talam 1, Talam 2, and Talam 3 used in this research. Morphological characters data was analyzed by description to construct identification key. Similarity index was counted by Simple Matching Coefficient (SSm) formula based on morphological scoring. Cluster analysis was conducted by UPGMA (Unweighted Pair Group Methods using Arithmetic Averages) method to construct dendrogram. PCA (Principal Component Analysis) were performed to defined role of each morphological character in grouping of accessions with MVSP (Multivariate Statistical Program) v. 3.1 software.  The dendrogram showed that four cultivars of Arachis hypogaea L. divided into two main clusters, 4 sub-clusters. The similarity index of clusters is 0.85%.

scholarly journals Comparison of Virginia and Runner-Type Peanut Cultivars for Development, Disease, Yield Potential, and Grade Factors in Eastern Virginia

2013 ◽  
Vol 40 (1) ◽  
pp. 15-23 ◽  
Author(s):  
M. Balota ◽  
P. Phipps
Keyword(s):  
Disease Incidence ◽  
Production Costs ◽  
Yield Potential ◽  
Economic Return ◽  
Federal Support ◽  
Pod Yield ◽  
Arachis Hypogaea L ◽  
Peanut Cultivars ◽  
High Yields ◽  
New Cultivars

ABSTRACT Peanut (Arachis hypogaea L.) is an important crop in the Virginia-Carolina (VC) region. Virginia-type cultivars are preferred vs. other peanut types because of the in-shell and gourmet markets that evolved in the VC region around this peanut type. Reduced federal support coupled with increased production costs for the virginia-type peanut vs. other peanut types and recently higher fuel and pesticide prices are good reasons for farmers to consider growing other peanut types than virginia-type in the VC region. Earlier research suggested that runner-type peanut can provide yield, gross value, and economic return similar with virginia-type when grown in the VC region. However, direct comparison of runner and virginia-type cultivars needs to be updated as new cultivars become available. In this study we compared four runner-types with five virginia-type cultivars for plant development, disease incidence, pod yield, pod brightness, grade factors, and gross value in 2009 and 2010. In agreement with earlier findings, the results show that runner-types can provide similar gross returns with virginia-type peanut cultivars when grown in the northern VC region. Florida 07 runner and Bailey virginia-type, currently the most popular cultivars in the VC region, had high yields and gross values in both years. However, Florida 07 and other runners matured later and pods were less bright when compared with the virginia-types. Therefore, growing runners in the northern VC region may be challenging due shorter seasons and reduced pod brightness if peanut is used for in-shell markets.

Peanut Response to Prohexadione Calcium as Affected by Cultivar and Digging Date

1997 ◽  
Vol 24 (2) ◽  
pp. 85-89 ◽  
Author(s):  
A. S. Culpepper ◽  
D. L. Jordan ◽  
R. B. Batts ◽  
A. C. York
Keyword(s):  
Arachis Hypogaea ◽  
Growth Regulator ◽  
Calcium Salt ◽  
Yield Response ◽  
Canopy Architecture ◽  
Arachis Hypogaea L ◽  
Prohexadione Calcium

Abstract An experiment at two locations in 1995 and two locations in 1996 evaluated virginia-type peanut (Arachis hypogaea L.) response to the growth regulator prohexadione calcium (calcium salt of 3,5-dioxo-4-propionylcyclohexanecarboxylic acid) as affected by cultivars and digging dates. Prohexadione calcium at 140 g ai/ha was applied at row closure and again 3 wk later in 1995 or 140 g/ha at row closure and 70 g/ha 3 and 6 wk later in 1996. The cultivars AgraTech (AT) VC-1, NC 9, NC 10C, NC 12C, NC-V11, and VA-C92R were dug on three separate dates approximately 11d apart. Response to prohexadione calcium was independent of digging dates. Prohexadione calcium altered canopy architecture and increased row visibility at harvest for all cultivars although the response was greatest with NC-V 11 and least with NC 9. Prohexadione calcium hastened pod maturity, increased percentages of extra large kernels, total sound mature kernels, and fancy pods, and increased peanut value/kg irrespective of cultivars and digging dates. Yield response to prohexadione calcium was cultivar dependent. NC 9 was most responsive, with yield increased 7 to 16% at all locations. Yields of ATVC-1, NC 10C, NC 12C, and NC-V 11 were increased 9 to 15% at two locations and unaffected at two locations. VA-C 92R was the least responsive, with yield increased 5% at two locations and decreased 8% at two locations.

Effects of B-9 (N-dimethyl-aminosuccinamic acid) on growth and yield of peanuts (Arachis Hypogaea L.)

1976 ◽  
Vol 86 (1) ◽  
pp. 211-218 ◽  
Author(s):  
J. L. Hammerton
Keyword(s):  
Arachis Hypogaea ◽  
Dry Weight ◽  
Growth And Yield ◽  
Arachis Hypogaea L ◽  
Peanut Cultivars ◽  
Vegetative Characters ◽  
Number Of Seeds

SUMMARYApplication of B-9 shortened mainstem and branch internodes of several peanut cultivars at all times of application. The numbers of mainstem and branch nodes were little affected by B-9. Interactions between cultivars and B-9 treatments in these vegetative characters were small, inconsistent and generally non-significant. B-9 had inconsistent effects on plant dry weight and did not increase pod yields. In an upright bunch type, podding was more compact, but mean seed dry weight and number of seeds per pod were slightly reduced by B-9.

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