The Effect of Three Digging Dates on Oil Quality, Yield, and Grade of Five Peanut Genotypes Grown Without Leafspot Control1

1986 ◽  
Vol 13 (2) ◽  
pp. 82-86 ◽  
Author(s):  
D. A. Knauft ◽  
A. J. Norden ◽  
D. W. Gorbet
Keyword(s):  
Fatty Acid Composition ◽  
Oil Content ◽  
Management Practice ◽  
Oil Quality ◽  
Minimal Effect ◽  
Pod Yield ◽  
Arachis Hypogaea L ◽  
Peanut Production ◽  
Early Harvest ◽  
Resistant Genotypes

Abstract Five peanut (Arachis hypogaea L.) genotypes, Southern Runner, Dixie Runner, Florunner, UF82206, and UF714021, were grown for three years, 1982–1984, near Gainesville, Florida without fungicide applications. Three digging dates, averaging 105 days after planting (DAP), 118 DAP, and 132 DAP, were used each year to determine the effects of early harvest as a management practice for peanut production under leafspot pressure. The different digging dates had no effect on fatty acid composition of the five genotypes, and had only minimal effect on the oil content and iodine value. The largest oil quality differences in this study were due to differences among genotypes and year-to-year variation. The earliest digging date tended to reduce market grade characters, but major pod yield differences were the result of genotype × digging date interactions. Genotypes with little or no resistance to leafspot diseases, such as Florunner and UF 714021, produced nearly 3000 kg/ha without leafspot control up to 118 DAP and then had sharp yield decreases, while resistant genotypes such as Southern Runner and UF 82206 continued to produce pod yields of 3000 kg/ha or higher up to 132 DAP.

Peanut (Arachis hypogaea L.) Response to the Hormonal Plant Growth Regulator Early Harvest®

2004 ◽  
Vol 31 (2) ◽  
pp. 70-73 ◽  
Author(s):  
J. P. Beasley ◽  
W. J. Grichar ◽  
D. L. Jordan ◽  
R. G. Lemon ◽  
B. A. Besler ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Economic Value ◽  
Indole Butyric Acid ◽  
Pod Yield ◽  
Commercial Plant ◽  
Commercial Mixture ◽  
Arachis Hypogaea L ◽  
Early Harvest

Abstract Experiments were conducted from 1996 through 2001 in Georgia, North Carolina, and Texas to determine peanut response to the commercial plant growth regulator Early Harvest® (a commercial mixture of cytokinin, gibberellic acid, and indole butyric acid). Early Harvest (applied in the seed furrow) or Early Harvest TST (applied as a dry seed treatment) followed by four foliar applications (four-leaf peanut, initial pegging, 14 d after initial pegging, and pod fill), was compared to non-treated peanut in five, 13, and three experiments in these respective states. Early Harvest did not affect pod yield or gross economic value of peanut regardless of location, cultivar, or edaphic and environmental conditions. These data suggest that a spray program consisting of Early Harvest most likely will not improve pod yield or gross economic value of peanut.

scholarly journals Cold-pressed cactus pear seed oil: Quality and stability

2021 ◽  
Vol 72 (3) ◽  
pp. e415 ◽  
Author(s):  
M. De Wit ◽  
V.K. Motsamai ◽  
A. Hugo
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Physicochemical Properties ◽  
Acid Composition ◽  
Oil Content ◽  
Seed Oil ◽  
Oil Quality ◽  
Cactus Pear ◽  
Cold Pressed

Cold-pressed seed oil from twelve commercially produced cactus pear cultivars was assessed for oil yield, fatty acid composition, physicochemical properties, quality and stability. Large differences in oil content, fatty acid composition and physicochemical properties (IV, PV, RI, tocopherols, ORAC, % FFA, OSI and induction time) were observed. Oil content ranged between 2.51% and 5.96% (Meyers and American Giant). The important fatty acids detected were C16:0, C18:0, C18:1c9 and C18:2c9,12, with C18:2c9,12, the dominating fatty acid, ranging from 58.56-65.73%, followed by C18:1c9, ranging between 13.18-16.07%, C16:0, which ranged between 10.97 - 15.07% and C18:0, which ranged between 2.62-3.18%. Other fatty acids such as C14:0, C16:1c9, C17:0, C17:1c10, C20:0, C18:3c9,12,15 and C20:3c8,11,14 were detected in small amounts. The quality parameters of the oils were strongly influenced by oil content, fatty acid composition and physicochemical properties. Oil content, PV, % FFA, RI, IV, tocopherols, ORAC and ρ-anisidine value were negatively correlated with OSI. C18:0; C18:1c9; C18:2c9,12; MUFA; PUFA; n-6 and PUFA/SFA were also negatively correlated with OSI. Among all the cultivars, American Giant was identified as the paramount cultivar with good quality traits (oil content and oxidative stability).

Sulphur management in groundnut for higher productivity and profitability under Semi-Arid condition of Rajasthan, India

2018 ◽  
Author(s):  
Nagesh Yadav ◽  
S. S. Yadav ◽  
Neelam Yadav ◽  
M. R. Yadav ◽  
Rakesh Kumar ◽  
...  
Keyword(s):  
Protein Content ◽  
Oil Content ◽  
Elemental Sulphur ◽  
Oil Yield ◽  
Pod Yield ◽  
Net Returns ◽  
Arachis Hypogaea L ◽  
Arid Condition ◽  
Semi Arid ◽  
Gypsum Application

The present study was planned to evaluate the performance of groundnut (Arachis hypogaea L.) under varying levels of sulphur and its sources under Semi-Arid condition of Rajasthan. Application of 60 kg S/ha resulted 8.8, 23.8 and 59.6% more pod/plant than 45, 30 and 15 kg S/ha, respectively. Gypsum as a source of S recorded 15.4 and 50.4% higher pods/plant over SSP and elemental sulphur, respectively. However, number of kernels/pod increased significantly upto 45 kg/ha only. Gypsum and SSP improved the kernels/pod by 14.2 and 11.2% over elemental sulphur, respectively. Application of 60 kg S/ha resulted in 140, 345 and 744 kg/ha and 127, 319 and 616 kg/ha higher pod and kernel yield over 45, 30 and 15 kg/ ha, respectively. Sulphur application through gypsum recorded the highest pod yield (1872 kg/ha) of groundnut that was 13.1 and 32.0 percent more than obtained under SSP and elemental sulphur treatment, respectively. Application of sulphur at 75 kg S/ha was recorded highest shelling% (72.13%) which were 7.0 and 10.9 per cent higher over 30 and 15 kg S/ha. The application of S at 45 kg/ha exhibited 7.6 and 17.0% higher protein content over 30 and 15 kg S/ha, respectively. Among sources, the highest protein content (23.75%), oil content (44.49%) and oil yield (597.76 kg/ha) was obtained with gypsum. Application of 60 kg S/ha increased oil yield by magnitude of 70.3, 175.1 and 316.9 kg/ha over 45, 30 and 15 kg S/ha, respectively. Sulphur application at the rate of 60 kg/ha increased the margin to the tune of 6343, 15867, 34062 /ha over 45, 30 and 15 kg S/ha, respectively. Likewise, graded increment in levels of sulphur resulted in significantly higher BCR upto 60 kg/ha over lower levels. The maximum net returns (55358/ha) and BCR (1.68) were obtained with gypsum.

Effects of planting density on pod development and yield of peanuts under the pattern of precision planted peanuts

2017 ◽  
Author(s):  
Changxing Zhao ◽  
Changliang Shao ◽  
Zhenling Yang ◽  
Yuefu Wang ◽  
Xiaojun Zhang ◽  
...  
Keyword(s):  
Management Practices ◽  
Field Experiments ◽  
Planting Density ◽  
Dry Matter Accumulation ◽  
Pod Yield ◽  
Arachis Hypogaea L ◽  
Pod Development ◽  
Peanut Production ◽  
Sowing Seed ◽  
Growth Characters

Understanding the effects of different sowing patterns and densities on plant growth characters and yield of peanut is essential for the design and adjustment of management practices that allow improvement and stabilization of peanut production. In the present study, Arachis hypogaea L. cv. Luhua 11 was used to determine the effects of planting density on pod development and yield of peanuts under the mode of single seeded precision sowing through field experiments. The results showed that an appropriate precision sowing density of 195,000-225,000 per hectare leads to an optimal pod number to produce pods, with dry matter accumulation resulting in significantly increased pod yield and harvest index(HI). When the same area sowing seed number of 255,000 per hectare, the kernel yield, pod yield, and HI per plant of the single seeded precision sowing method were higher than those of the double seeded precision sowing method.

Evaluation of Groundnut (Arachis hypogaea L.) Genotypes under Allahabad Agro-climatic Conditions in India

2019 ◽  
pp. 1-5
Author(s):  
Kamidi Vijaykumar ◽  
Prashant Kumar Rai ◽  
A. Taqui ◽  
Venkata Pavan Kumar Nalluri
Keyword(s):  
Oil Content ◽  
Block Design ◽  
Climatic Conditions ◽  
Pod Yield ◽  
Arachis Hypogaea L ◽  
Randomized Complete Block Design ◽  
Days To Maturity ◽  
Quantitative And Qualitative Traits ◽  
Field Experimentation ◽  
Kernel Yield

The present investigation was carried out to elucidate the information on the performance of groundnut genotypes for quantitative and qualitative traits. The experimental design consisted of 11 groundnut genotypes (including one check) arranged in Randomized complete Block Design with three replications in the Kharif season 2014 at Field Experimentation Centre of the Department of Genetics and Plant Breeding, SHIATS Allahabad, Analysis of variance revealed the presence of considerable variation among the genotypes for all the characters studied. On the basis of mean performance among 11 genotypes ICG 163 was best genotype in growth like primary branches per plant (7.77), days to maturity(107.33), pod yield per plant  (17.89 g), kernel yield (21.12 q ha-1) and oil yield (997 kg  ha-1). ICG 434 and ICG 513 were the best in protein content (23.68%) and oil content (47.73%).

scholarly journals Components of Resistance to an Indian Source of Cercospora Arachidicola in Selected Peanut Lines1

1993 ◽  
Vol 20 (2) ◽  
pp. 93-96 ◽  
Author(s):  
F. Waliyar ◽  
D. McDonald ◽  
P. V. Subba Rao ◽  
P. M. Reddy
Keyword(s):  
Field Resistance ◽  
Cercospora Arachidicola ◽  
Components Of Resistance ◽  
Arachis Hypogaea L ◽  
Incubation Periods ◽  
Peanut Production ◽  
Lower Infection ◽  
Indian Source ◽  
Foliar Pathogens ◽  
Resistant Genotypes

Abstract Cercospora arachidicola Hori is one of the most important foliar pathogens worldwide that limits peanut production in farmers' fields. Earlier screening trials allowed us to identify lines with field resistance to early leafspot. In order to determine the components of resistance of these lines and other lines reported to be resistant elsewhere, 19 peanut genotypes (Arachis hypogaea L.) were evaluated by the detached leaf technique using an isolate of Cercospora arachidicola from the ICRISAT Center in India. Significant differences were observed among genotypes for all components of resistance included in the study. With a few exceptions, early leafspot- resistant genotypes (ICG nos. 8298, 6902, 6284, 1703, 10900, 7878, 9989 and 10920) exhibited longer incubation periods, reduced sporulation, smaller lesion diameters and lower infection frequencies than susceptible lines. Genotypes ICG 8298 and ICG 6902 were the most resistant, while ICG nos. 221, 7827 and 6340 were the most susceptible to early leafspot. A few lines had resistant reactions to some components but susceptibility to others.

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