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  • 11
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 1994
    In:  HortScience Vol. 29, No. 7 ( 1994-07), p. 733c-733
    In: HortScience, American Society for Horticultural Science, Vol. 29, No. 7 ( 1994-07), p. 733c-733
    Abstract: Influences of nitrogen (N) rate were evaluated on vegetable amaranth. Amaranthus tricolor, grown at uniform populations over two year. The main objective was to determine an optimum level of N fertilization for successful production in middle Georgia. In 1992 and 1993 accession `RRC 241' was planted in randomized complete block design on June 19 and 23, respectively. Four N rates, equally split were evaluated: 0, 45, 90, and 135 kg ha -1 . First of the applications were 18 and 13 days post planting for 1992 and 1993, and again when plants were 5 weeks old. Plants were harvested 48 days after planting with green yield, leaf fresh weight. and stem fresh weight collected in both years and leaf area for 1993. In years 1992 and 1993 green yields were 5.3 and 6.5, 10.7 and 9.0. 13.2 and 12.1, and 13.5 and 14.0 Mg ha -1 . respectively for the 0, 45, 90, and 135 rates. In both years vegetative components showed significant regression for all treatments. Vegetative response (R 2 ) for green yield in 1992 and 1993 was quadratic (85%) and linear (73%), leaf fresh weight in both years was cubic (63% and 48%), while stem fresh weight response was linear (29%) and cubic (72%). During 1993 leaf area was linear (58%). Non-significance predominantly occurred between the two higher rates for each year and when combined. indicating that 90 kg N ha -1 should provide optimal production of amaranth for the middle Georgia region.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 1994
    detail.hit.zdb_id: 2040198-X
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  • 12
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 1992
    In:  HortScience Vol. 27, No. 11 ( 1992-11), p. 1176c-1176
    In: HortScience, American Society for Horticultural Science, Vol. 27, No. 11 ( 1992-11), p. 1176c-1176
    Abstract: The effects of differing soil moisture levels on the vegetative components of vegetable amaranth, Amaranthus tricolor RRC no. 241, were evaluated. A completely randomized design with 10 replications and 4 treatments (3,6,13, & 18% soil moisture) was followed. Leaf, stem, plant, root fresh weight and leaf area (LFW, SFW, PFW, RFW, and LA, respectively)—were recorded 48 days after planting. For each of the vegetative components the only significant difference (P ≤ 0.05) occurred between 3% versus 6-18% soil moistures, with moisture level of 6-18% showing no significant variation among themselves. The mean ranges for LFW (28.3-32.7 g), STW (6.9-9.2 g), PFW (41.3-48.2 g), RFW (8.6-12.8 g), and LA (1049-1222 cm 2 ) across 6-18% soil moisture were approximately four times greater than the vegetative components of 3% soil moisture. From these preliminary results, it appears that vegetable amaranth has the ability to grow and perform well over a 6-18% soil moisture range, indicating an ability to better adjust and adapt to changing soil moisture environments.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 1992
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  • 13
    Online Resource
    Online Resource
    Wiley ; 2018
    In:  Crop Science Vol. 58, No. 3 ( 2018-05), p. 1371-1384
    In: Crop Science, Wiley, Vol. 58, No. 3 ( 2018-05), p. 1371-1384
    Abstract: Energy cane is a specialized sugarcane ( Sacharum spontaneum L.) hybrid developed for high lignocellulosic biomass for biofuel production. The optimum planting spacing for energy cane is not known; hence, it has been planted with sugarcane planting spacing. We examined the effect of six plant spacings derived from three inter‐ (1.22, 1.52, and 1.83 m) and two intra‐row (0.61 and 0.91 m) spacings on energy cane growth, physiology, and biomass yield. Energy cane was planted in fall 2012, was harvested after establishment in 2013, and was allowed to ratoon for biomass yield in 2014 and 2015. The plant spacing had varied effects on energy cane growth and physiology, but no effect on biomass yield. Wide spacing resulted in increased tiller and leaf numbers, but spacing had no effect on other growth and physiological parameters at the p 〈 0.05 level. The results suggested that energy cane possesses the ability to adjust plant growth according to plant spacing without compromising its biomass yield and can effectively use wide spacing (1.83 × 0.91 m) commonly adopted for sugarcane planting. Wide spacing can reduce seeding cost and energy during planting and will allow the use of existing sugarcane farm machinery for energy cane production. The high biomass yield (18.8–25.1 Mg ha −1 ) of energy cane obtained in this study also suggests that energy cane can be successfully produced for lignocellulosic feedstock.
    Type of Medium: Online Resource
    ISSN: 0011-183X , 1435-0653
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1480918-7
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  • 14
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 1995
    In:  HortScience Vol. 30, No. 3 ( 1995-06), p. 440d-440
    In: HortScience, American Society for Horticultural Science, Vol. 30, No. 3 ( 1995-06), p. 440d-440
    Abstract: Over 2 years, eight vegetable amaranth ( Amaranthus spp.) genotypes were grown in a yield trial. Data on yield and gas exchange rates were obtained. On 16 July 1993 and 27 June 1994, all genotypes (Hinchoy VL & GL, RRC numbers 389, 701, 843, 1034, 1186, & PI349553) were planted in a randomized complete-block design with four replications. Plants were harvested ≈44 days after planting. Net photosynthesis (P n ), transpiration (E), green yield (GYLD), and leaf fresh weight (LFW) are discussed. Significant variation ( P 〈 0.01) existed across and within years for all treatments. Higher GYLD and LFW were found in 1994, and Pn and E were higher in 1993. Over both years, GYLDs were highest for RRC 843 (10.4 Mg·ha –1 ) and RRC 1034 (l0.0 Mg·ha –1 ); RRC 1034 had the highest LFW (64.4 g/plant). The highest E rate (8.9 mmol·m –2 ·s –1 was in RRC 843 and RRC 1034. Genotype RRC 843 showed highest P n (27.5 μmol CO 2 /m 2 per second). In general, RRC 843 and RRC 1034 outperformed other genotypes.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 1995
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  • 15
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 2004
    In:  HortScience Vol. 39, No. 4 ( 2004-07), p. 749A-749
    In: HortScience, American Society for Horticultural Science, Vol. 39, No. 4 ( 2004-07), p. 749A-749
    Abstract: The goal of this study was to compare the effect of leguminous and non-leguminous cover crops alone or in mixture with fertilizer nitrogen rates on above ground biomass, fruit number, and bell pepper yield. The following fall-spring fertility treatments were applied using randomized complete-block design with three replications: 1) fall-0 N, fallow, spring-0 N; 2) fall-0 N, abruzzi rye, spring-0 N; 3) fall-0 N, hairy vetch, spring-0 N; 4) fall-0 N, abruzzi rye+hairy vetch, spring-0 N; 5) fall-0 N, fallow, spring-84 kg·ha -1 N; 6) fall-0 N, abruzzi rye; spring-84 kg·ha -1 N; 7) fall-0 N, hairy vetch, spring-84 kg·ha -1 N; 8) fall-0 N, abruzzi rye+hairy vetch; spring-84 kg·ha -1 N; 9) fall-0 N, fallow, spring-168 kg·ha -1 N; 10) fall-0 N, abruzzi rye, spring-168 kg·ha -1 N; 11) fall-0 N, hairy vetch, spring-168 kg·ha -1 N; and 12) fall-0 N, abruzzi rye+hairy vetch, spring-168 kg·ha -1 N. In Spring 2003, `Camelott' bell pepper were transplanted. Total yield and fruit number were compiled over 8 weeks, while total vegetative dry matter was measured at final harvest. Highest above ground biomass (48.0 g/plant), total yield (36.7 Mg·ha -1 ) and fruit number (11/plant) were produced by fall-0 N, hairy vetch; spring-0 N. Lowest above ground biomass (19.0 g/plant), total yield (11.5 Mg·ha -1 ) and fruit number (4/plant) were produced by fall-0 N, abruzzi rye; spring-0 N. Hairy vetch without any additional N produced plant biomass, fruit number and yield better than all other treatments. Results indicate the legume cover crop can be an effective N source in supporting plant biomass, fruit number and yield of bell pepper.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 2004
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  • 16
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 2004
    In:  HortScience Vol. 39, No. 4 ( 2004-07), p. 749B-749
    In: HortScience, American Society for Horticultural Science, Vol. 39, No. 4 ( 2004-07), p. 749B-749
    Abstract: A study was conducted in 2002-2003 to determine effect of leguminous and nonleguminous cover crops alone or in mixture with fertilizer N rates on gas exchange (GE) at different fruiting stages of bell pepper. Transpiration (E), photosynthesis (P n ) and internal leaf CO 2 concentration (C i ) are reported. Fall-spring fertility treatments were applied with 3 replications in a randomized complete-block design: 1) fall-0 N, fallow, spring-0 N; 2) fall-0 N, abruzzi rye, spring-0 N; 3) fall-0 N, hairy vetch, spring-0 N; 4) fall-0 N, abruzzi rye+hairy vetch, spring-0 N; 5) fall-0 N, fallow, spring-84 kg·ha -1 N; 6) fall-0 N, abruzzi rye, spring-84 kg·ha -1 N; 7) fall-0 N, hairy vetch; spring-84 kg·ha -1 N; 8) fall-0 N, abruzzi rye+hairy vetch, spring-84 kg·ha -1 N; 9) fall-0 N, fallow, spring-168 kg·ha -1 N; 10) fall-0 N, abruzzi rye, spring-168 kg·ha -1 N; 11) fall-0 N, hairy vetch, spring-168 kg·ha -1 N; and 12) fall-0 N, abruzzi rye+hairy vetch, spring-168 kg·ha -1 N. In Spring 2003, `Camelott' bell pepper were transplanted in all plots. Maximum E (15.1 mmol·m -2 ·s -1 ) and P n (16.2 μmol·m -2 ·s -1 CO 2 occurred at mid-fruiting, and maximum C i (445.5 μL·L -1 ) occurred at final-fruiting. Fall-0 N, hairy vetch; spring-168 kg·ha -1 N influenced E and P n the most while C i was affected the most by fall-0 N, abruzzi rye; spring-168 kg·ha -1 N. Results indicate that organic N from this legume can enhance GE of bell pepper similar to the inorganic N rates.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 2004
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  • 17
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 2005
    In:  HortScience Vol. 40, No. 4 ( 2005-07), p. 1006D-1006
    In: HortScience, American Society for Horticultural Science, Vol. 40, No. 4 ( 2005-07), p. 1006D-1006
    Abstract: The purpose of this study was to evaluate how leguminous and non-leguminous cover crops alone or in mixture with synthetic nitrogen rates affect aboveground biomass, fruit number, and yield of eggplant. The following fall–spring fertility treatments were applied using randomized complete-block design with three replications: 1) fall-0 N, fallow; spring-0 N; 2) fall-0 N, abruzzi rye; spring-0 N; 3) fall-0 N, hairy vetch; spring-0 N; 4) fall-0 N, abruzzi rye+hairy vetch; spring-0 N; 5) fall-0 N, fallow; spring-70 kg×ha –1 N; 6) fall-0 N, abruzzi rye; spring-70 kg×ha –1 N; 7) fall-0 N, hairy vetch; spring-70 kg×ha –1 N; 8) fall-0 N, abruzzi rye+hairy vetch; spring-70 kg×ha –1 Na; 9) fall-0 N, fallow; spring-140 kg×ha –1 N, 10) fall-0 N, abruzzi rye; spring-140 kg×ha –1 N; 11) fall-0 N, hairy vetch; spring-140 kg×ha –1 N; and 12) fall-0 N, abruzzi rye+hairy vetch; spring-140 kg×ha –1 N. In Spring 2004, `Megal' eggplant seedlings were transplanted. Total yield and fruit number were compiled over 7 weeks, while total vegetative dry matter was measured at final harvest. Maximum aboveground biomass (227.6 g/plant), total yield (28.7 Mg×ha –1 ) and fruit number (13/plant) were produced by fall-0 N, hairy vetch; spring-70 kg×ha –1 N. Minimum aboveground biomass (53.0 g/plant) was produced by fall-0 N, abruzzi rye; spring-0 N, while minimum total yield (7.8 Mg×ha –1 ) and fruit number (5/plant) were produced by fall-0 N, fallow; spring-0 N. Results imply that hairy vetch supplemented with N at 70 kg×ha –1 is most effective in supporting fruit number and yield of eggplant.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 2005
    detail.hit.zdb_id: 2040198-X
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  • 18
    Online Resource
    Online Resource
    American Society for Horticultural Science ; 1992
    In:  HortScience Vol. 27, No. 6 ( 1992-06), p. 647e-647
    In: HortScience, American Society for Horticultural Science, Vol. 27, No. 6 ( 1992-06), p. 647e-647
    Abstract: The effect of soil moisture and pH levels on the vegetative growth of amaranth were studied in the greenhouse during 1990-91. Three soil pH levels: 4.5, 5.3, and 6.4 and four soil water levels: 3, 6, 12 and 18% (w/w) comprised the treatments of the two studies. The plants grown in pH 6.4 were significantly taller and had greater leaf area than plants grown in pH 5.3 or 4.7 soil. There was a significant decrease in all above ground plant parts with each increase in soil acidity. The top fresh weight of plants grown in 5.6 and 4.7 pH soil were 27% and 73% lower, respectively, than plant grown in 6.4 pH soil. Plant grown in 3% soil water had significantly lower leaf, stem and root fresh weights than other soil water levels. There was no significant difference in the performance of plants grown in 6, 12 or 18% soil water, suggesting that amaranth plant is adapted to a wide range of soil moisture conditions.
    Type of Medium: Online Resource
    ISSN: 0018-5345 , 2327-9834
    Language: Unknown
    Publisher: American Society for Horticultural Science
    Publication Date: 1992
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  • 19
    Online Resource
    Online Resource
    Wiley ; 2005
    In:  Agronomy Journal Vol. 97, No. 5 ( 2005-09), p. 1279-1290
    In: Agronomy Journal, Wiley, Vol. 97, No. 5 ( 2005-09), p. 1279-1290
    Abstract: Management practices may influence cotton ( Gossypium hirsutum L.) and sorghum [ Sorghum bicolor (L.) Moench)] root C and N inputs for improving soil quality. We examined the influence of three tillage practices [no‐till (NT), strip till (ST), and chisel till (CT)] , four cover crops {legume [hairy vetch ( Vicia villosa Roth)], nonlegume [rye ( Secale cereale L.)], biculture of legume and nonlegume (vetch and rye), and no cover crops (winter weeds)}, and three N fertilization rates (0, 60–65, and 120–130 kg N ha −1 ) on cotton and sorghum root C and N from the 0‐ to 120‐cm soil depth. A field experiment was conducted in a Dothan sandy loam (fine‐loamy, kaolinitic, thermic, Plinthic Kandiudults) from 2000 to 2002 in central Georgia. Root C and N at 0 to 15 cm were greater in NT than in ST and CT in 2000 cotton and 2001 sorghum, but at 30 to 60 cm they were greater in ST than in NT and CT in 2000 cotton. Root C and N at 0 to 15 cm were also greater with vetch and rye biculture than with vetch and weeds in 2001 sorghum. Total root C and N at 0 to 120 cm were greater in ST with vetch than in ST with rye or in CT with weeds in 2000 cotton. In contrast, total root N was greater in NT with rye than in ST with rye or CT with vetch in 2001 sorghum and 2002 cotton. Total root N was also greater in CT with 60 kg N ha −1 than in NT or CT with 120 kg N ha −1 in 2000 cotton, but was greater in ST with 60 kg N ha −1 than in NT with 0 kg N ha −1 or CT with 120 kg N ha −1 in 2002 cotton. The NT or ST with vetch and rye cover crops and 60 kg N ha −1 may increase cotton and sorghum root C and N compared with CT with no cover crops and N fertilization, thereby helping to improve soil quality and productivity.
    Type of Medium: Online Resource
    ISSN: 0002-1962 , 1435-0645
    Language: English
    Publisher: Wiley
    Publication Date: 2005
    detail.hit.zdb_id: 1471598-3
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  • 20
    Online Resource
    Online Resource
    Elsevier BV ; 2007
    In:  Soil and Tillage Research Vol. 96, No. 1-2 ( 2007-10), p. 205-218
    In: Soil and Tillage Research, Elsevier BV, Vol. 96, No. 1-2 ( 2007-10), p. 205-218
    Type of Medium: Online Resource
    ISSN: 0167-1987
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2007
    detail.hit.zdb_id: 1498737-5
    SSG: 13
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