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Year 2007 Remove constraint 2007: 2007 Subjects leaf area Remove constraint leaf area: leaf area
Displaying items 1 - 10 of 18 start over

1. A Basis for Relative Growth Rate Differences Between Native and Invasive Forb Seedlings

Description:
Includes references
Author:
James, J.J. , Drenovsky, R.E.
Subject:
forbs , indigenous species , introduced plants , invasive species , plant growth , greenhouse experimentation , net assimilation rate , dry matter accumulation , leaf area , dry matter partitioning , Intermountain West region
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

2. A comparison of sap flux-based evapotranspiration estimates with catchment-scale water balance

Description:
Includes references
Author:
Ford, C.R. , Hubbard, R.M. , Kloeppel, B.D. , Vose, J.M.
Subject:
forested watersheds , forest plantations , transpiration , sap flow , forest trees , sapwood , measurement , estimation , model validation , simulation models , spatial variation , stand density , leaf area , landscapes , solar radiation , evapotranspiration , North Carolina
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

3. Arbuscular Mycorrhizal Fungi Enhance Tolerance of Rosa multiflora cv. Burr to Bicarbonate in Irrigation Water

Description:
Includes references
Author:
Cartmill, A.D. , Alarcon, A. , Valdez-Aguilar, L.A.
Subject:
Rosa multiflora , nursery crops , rootstocks , vesicular arbuscular mycorrhizae , mycorrhizal fungi , irrigation water , bicarbonates , water quality , plant stress , stress tolerance , Glomus , dosage , pH , electrical conductivity , plant growth , leaf area , dry matter accumulation , plant nutrition , nutrient uptake , nutrient content , oxidoreductases , enzyme activity , alkaline phosphatase , acid phosphatase
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

4. Coastal Bermudagrass, Bahiagrass, and Native Range Simulation at Diverse Sites in Texas

Description:
Includes references
Author:
Kiniry, J.R. , Burson, B.L. , Evers, G.W. , Williams, J.R. , Sanchez, H. , Wade, C. , Featherston, J.W. , Greenwade, J.
Subject:
Cynodon dactylon , Paspalum notatum , Panicum virgatum , forage grasses , forage crops , pastures , grasslands , range management , plant growth , soil water balance , agricultural runoff , soil erosion , climatic factors , leaf area , dry matter accumulation , nitrogen content , species differences , radiation use efficiency , simulation models , model validation , indigenous species , Texas
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

5. Corn gluten meal as an alternative weed control option for spring-transplanted onions

Description:
Includes references
Author:
Webber, C.L. III , Shrefler, J.W. , Taylor, M.J.
Subject:
Allium cepa , onions , cultivars , height , leaf area , weeds , field experimentation , preemergent weed control , corn gluten meal , herbicides , biopesticides , application rate , application timing , broadleaf weeds , crop-weed competition , Oklahoma
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

6. Cotton Seedling Abrasion and Recovery from Wind Blown Sand

Description:
Includes references
Author:
Baker, J.T.
Subject:
Gossypium hirsutum , cotton , fiber crops , wind erosion , plant damage , sand , seedlings , mechanical damage , cultivars , wind speed , regrowth , leaf area , stems , dry matter accumulation , net assimilation rate , plant growth , defoliation
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

7. Duckweed (Lemna gibba) growth inhibition bioassay for evaluating the toxicity of olive mill wastes before and during composting

Description:
Two-phase olive mill waste (TPOMW) is considered the main problem confronting the modern oil extraction and processing industry. Composting has been recently proposed as a suitable method to treat TPOMW so that it is suitable for use in agriculture. In the work reported here, the Lemna gibba bioassay was tested to assess the toxicity of TPOMW before and during the composting process. The method was compared with the Lepidium sativum bioassay and with other chemical maturity indices traditionally reported in the literature. The L. gibba test proved to be a simple, sensitive, and accurate method to evaluate toxicity before and during the composting of TPOMW. Plant growth response was measured by two methods: counting the number of fronds (leaves) and measuring total frond area (TFA) with image analysis software. Compared to the counting of fronds (L. gibba) or seeds (L. sativum), the use of area-measuring software permitted a very rapid, unbiased and easy way of analysing the toxicity of TPOMW before and during composting. Although the accuracy of the frond count method was similar to the traditional cress seed test, data analysis showed that the TFA measurement method was statistically more accurate (significantly lower variance) than the frond count approach. Highly significant correlations were found between TFA and some important maturation indices commonly reported in literature indicating that the L. gibba bioassay can be a useful tool to determine the degree of maturity of TPOMW composts.
Author:
Cayuela, M.L. , Millner, P. , Slovin, J. , Roig, A.
Subject:
food processing wastes , olive oil , biological treatment , composting , composts , compost maturity , bioassays , phytotoxicity , leaf area , Lemna gibba , Lepidium sativum
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

8. Ecology, host specificity and impact of Atomacera petroa Smith (Hymenoptera: Argidae) on Miconia calvescens DC (Melastomataceae)

Description:
Includes references
Author:
Badenes-Perez, F.R. , Johnson, M.T.
Subject:
Argidae , Miconia calvescens , weed control , sawflies , biological control agents , insect ecology , host plants , host range , host specificity , larvae , tree damage , leaves , leaf area , Brazil
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

9. Ecophysiology of a Mangrove Forest in Jobos Bay, Puerto Rico

Description:
Includes references
Author:
Lugo, A.E. , Medina, E. , Cuevas, E. , Cintron, G. , Laboy Nieves, E.N. , Novelli, Y.S.
Subject:
mangrove forests , gas exchange , forest litter , nutrient use efficiency , photosynthesis , stomatal conductance , leaf area , salinity , translocation (plant physiology) , vegetation structure , nutrient content , chemical analysis , biogeochemical cycles , forest ecology , Puerto Rico
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007

10. Effects of carbon dioxide, temperature and ultraviolet-B radiation and their interactions on soybean (Glycine max L.) growth and development

Description:
Includes references
Author:
Koti, S. , Reddy, K.R. , Kakani, V.G. , Zhao, D. , Gao, W.
Subject:
Glycine max , soybeans , carbon dioxide , air temperature , ultraviolet radiation , plant growth , plant development , climate change , elevated atmospheric gases , genotype , plant stress , height , leaf area , dry matter accumulation , photosynthesis , chlorophyll , phenolic compounds , plant damage , epicuticular wax , cell membranes
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2007