Narrow-Row Corn: Yield Potential and Current Developments

Mederski, H. J.; VanDoren, D. M.; Hoff, D. J.

doi:10.13031/2013.40505

Cited by 4 publications

(4 citation statements)

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“…Several other workers (9,20,29) have found that light saturation occurs at lower light intensity in dry than in well watered plants. Several other workers (9,20,29) have found that light saturation occurs at lower light intensity in dry than in well watered plants.…”

Section: Discussionmentioning

confidence: 93%

Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Bunce¹

1978

Can. J. Bot.

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BUNCE, J. A. 1978. Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton. Can. J. Bot. 56: 1492-1498. Soybeans and cotton were subjected to humidities from 40 to 80% at 23°C and to soil drought during early vegetative growth under controlled conditions. Measurements were made of leaf water potentials, leaf expansion rates, leaf diffusive resistances to water vapor, and whole-shoot net photosynthesis rates. Net assimilation rates were calculated from harvest data. Low humidity resulted in low leaf water potential and low turgor in all cases and resulted in reduced leaf expansion rates in some, but not all, cases. Low humidity reduced dry weight growth only where leaf expansion rates were reduced. Net photosynthesis rates per unit leaf area were unaffected by low humidity, despite up to 1.5-fold increases in diffusive resistance to water vapor. During soil water stress, leaf expansion rates were reduced 1-2 days before net photosynthesis rates per unit leaf area were reduced, but leaf expansion continued at night after net photosynthesis rates were severely reduced by stress. As a result, the relative importance of leaf area expansion and net assimilation rate to growth in dry weight duringsoil waterstress wasdependent on the degree and duration of stress. BUNCE, J . A. 1978. Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton. Can. J. Bot.56: 1492-1498. Des plants de f6ve soja et de cotton ont etC soumis i une humidite de 40 a 80% a 23"C, ainsi q u ' i un assechement du sol, durant les premieres itapes de la croissance vegetative dans des conditions contr61ees. On a mesure le potentiel hydrique des feuilles, le taux d'expansion des feuilles, la resistance de la feuille i la diffusion de la vapeur d'eau et le taux photosynthetique net des tiges entieres. Les taux nets d'assimilation ont ete calculks d'apres lesdonnees de recoltes. Une faible humidite amene dans tous les cas un faible potentiel hydrique et une faible turgescence dans les feuilleset, danscertainscasseulement, destaux rCduitsd'expansionfoliaire. Une faible humidite amene une diminution de la croissance en poids sec uniquement lorsque le taux d'expansion foliaire diminue. Les taux de photosynthese nette par unite de surface foliaire ne sont pasaffectes par une humidite basse, malgre des augmentations dejusqu'i 1.5 fois de la resistance a ladiffusion de la vapeur d'eau. Durant un stress hydrique dans le sol, le taux d'expansion foliaire diminue 1-

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Section: Discussionmentioning

confidence: 93%

Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Bunce¹

1978

Can. J. Bot.

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“…Broadcast Mn treatments were disked in 10 days before planting. A single foliar Mn application to the upper plant surfaces, which have been shown to be the most effective in absorbing foliar Mn (10), was applied at the pre-blossom stage (June 29) in 1970 and at the pre-blossom and early blossom stages (July 2 and July 15) in 1971. Foliar-applied Mn carriers were dissolved in water containing a 0.5% (v/v) "Tronic" surfactant and applied with a stainless steel hand sprayer at a rate of 230 liter of solution per ha.…”

Section: Effect Of Source Rate and Methods Of Applicationmentioning

confidence: 99%

Effect of Soil and Foliar‐applied Manganese on the Micronutrient Content and Yield of Soybeans¹

Randall¹,

Schulte²,

Corey

1975

Agronomy Journal

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Manganese deficiency of soybeans (Glycine max (L.) Merr.) will undoubtedly become more prevalent as soybean acreage increases along with strong emphasis on yield maximization. Thus, field experiments were conducted on two soils (Argiaquoll and a Hapludoll) in southern Wisconsin to evaluate sources, rates, and methods of application of Mn fertilizers on soybeans. Two sources, MnSO4 and Mn‐ethylenediaminetetraacetic acid (MnEDTA), were broadcast, row or foliar‐applied at various rates to Mn‐deficient soils and/or soybeans. Micronutrient concentrations, Mn uptake, and various production parameters were measured. All rates and application methods of MnSO4 and foliar applications of Mn‐EDTA were effective in supplying Mn to the plant. Row applications of MnSO4 were somewhat more efficient than broadcast applications. Manganese applied at rates ranging from 5 to 22 kg Mn/ha as MnSO4 with the starter fertilizer in the row at planting time appeared to be most efficient soil treatments in increasing seed yields. The MnEDTA applied in the row reduced plant weight, leaf Mn, and soybean yields slightly. When Zn was not included in the starter fertilizer, leaf Zn and Cu were increased by the soil‐applied MnEDTA treatments. Leaf Fe was not affected by any of the Mn treatments. Foliar applications of Mn were most effective when applied at the early blossom or early pod set stages or in multiple applications at these stages. Single applications of 2.24 and 4.48 kg Mn/ha as MnSO4 or 0.51 kg Mn/ha as MnEDTA caused some burning of the foliage. Combined row and foliar methods of application also appeared to relieve Mn deficiency effectively. Small amounts of MnSO4 applied in the row corrected the Mn deficiency early in the season, whereas foliar applications adequately supplied Mn to the plant later in the growing season. This combination resulted in higher yields than with either row or foliar treatments applied alone.

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“…Incubating the soil prior to anlysis or heating the extracting solution has been shown (1,2,7,8) to affect the availability of phosphorus present in the soil. Other recent investigations ( 4,6,9,10) have shown that the responses of various plants to phosphorus fertilization are usually accentuated to a certain extent by higher soil temperatures.…”

mentioning

confidence: 93%

Relationship of Soil Temperature, Water Soluble Phosphorus in Applied Fertilizer, and Method of Placement to Growth of Winter Wheat¹

Gingrich

1964

Agronomy Journal

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Synopsis Top growth total yield of P, and percentage of K in the tops were significantly lower while percentages of P and N were significantly higher in plants grown at 50° F. than in those grown at 60 or 70°. Applying phosphatic fertilizer in a zone, as compared to mixing it with the soil, increased top growth, P percentage in the tops, and total yield of P while it decreased the percentage of K in the tops. In general the amount of dry matter, percentage of P in tops, and total yield of P were increased as the percentage of water soluble P in the applied fertilizer was increased.

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Narrow-Row Corn: Yield Potential and Current Developments

Cited by 4 publications

References 0 publications

Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Effect of Soil and Foliar‐applied Manganese on the Micronutrient Content and Yield of Soybeans¹

Relationship of Soil Temperature, Water Soluble Phosphorus in Applied Fertilizer, and Method of Placement to Growth of Winter Wheat¹

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Narrow-Row Corn: Yield Potential and Current Developments

Cited by 4 publications

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Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Effects of water stress on leaf expansion, net photosynthesis, and vegetative growth of soybeans and cotton

Effect of Soil and Foliar‐applied Manganese on the Micronutrient Content and Yield of Soybeans1

Relationship of Soil Temperature, Water Soluble Phosphorus in Applied Fertilizer, and Method of Placement to Growth of Winter Wheat1

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Effect of Soil and Foliar‐applied Manganese on the Micronutrient Content and Yield of Soybeans¹

Relationship of Soil Temperature, Water Soluble Phosphorus in Applied Fertilizer, and Method of Placement to Growth of Winter Wheat¹