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Fractal Analysis For Morphological Description Of Corn Roots Under Nitrogen Stress, John Settimi, Bahman Eghbal, Jerry Maranville, Anne Parkhurst
Fractal Analysis For Morphological Description Of Corn Roots Under Nitrogen Stress, John Settimi, Bahman Eghbal, Jerry Maranville, Anne Parkhurst
John R. Settimi
A means of quantification of plant root branching, specifically under stress, is of importance for evaluating the contribution of plant roots to water and nutrient uptake and subsequently plant growth. An experiment was conducted to describe the morphology of corn (Zea mays L.) root systems using fractal analysis and also to determine if a roots fractal dimension (D) is altered by N stress. Corn genotypes (B73 ✕ LHI05 and N74 ✕ Mo17) were planted in peg boxes, 1.2 m long, 1.2 m deep, and 0.05 m wide filled with 20:80 soil to sand mixture and were grown with N rates …
Fractal Analysis For Morphological Description Of Corn Roots Under Nitrogen Stress, John Settimi, Bahman Eghball, Anne Parkhurst, Jerry Maranville
Fractal Analysis For Morphological Description Of Corn Roots Under Nitrogen Stress, John Settimi, Bahman Eghball, Anne Parkhurst, Jerry Maranville
John R. Settimi
A means of quantification of plant root branching, specifically under stress, is of importance for evaluating the contribution of plant roots to water and nutrient uptake and subsequently plant growth. An experiment was conducted to describe the morphology of corn (Zea mays L.) root systems using fractal analysis and also to determine if a root's fractal dimension (D) is altered by N stress. Corn genotypes (B73 X LH105 and N74 X Mo17) were planted in peg boxes, 1.2 m long, 1.2 m deep, and 0.05 m wide filled with 20:80 soil to sand mixture and were grown with N rates …
Photoperiod Effect Before And After Flowering On Branch Development In Determinate Soybean, John Settimi, James Board
Photoperiod Effect Before And After Flowering On Branch Development In Determinate Soybean, John Settimi, James Board
John R. Settimi
Previous research indicated that restricted branch development was a factor associated with soybean [Glycine max (L.) Merr.] seed yield reductions at late planting dates in the southeastern United States. The present studies were conducted to outline the progress of branch development at different planting dates and to determine the role of photoperiod in branch restriction at late planting dates. In field studies, eight cultivars were planted at early April (nonoptimal), mid-May (optimal), and mid-June (nonoptimal) planting dates in 1982 and 1983 at Baton Rouge, LA (30°N Lat), on an Olivier silt loam (fine-silty, mixed, thermic Aquic Fraguidalf) soil. Plants were …