Soil and Plant Analysis for Tree Culture

Wilde, S. A.; Voigt, G. K.; Iyer, J. G.

doi:10.1097/00010694-197311000-00011

Cited by 224 publications

(251 citation statements)

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“…Calcium super phosphate (15.5% P 2 O 5 ) at rate of 200 kg fad -1 was added during soil preparation and 50 kg fad -1 potassium sulphate (48% K 2 O) with the 2 nd irrigation were added, all other recommended agricultural practices for sesame production. Soil physical and chemical properties of the experimental site were determined according to Wilde et al (1985) and presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Sesame (Sesamum indicum L.) yield and yield components influenced by nitrogen and foliar micronutrient applications in the Fayoum region, Egypt

El-Sherif

2016

Egypt. J. Agron.

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HIS STUDY investigates nitrogen and foliar micronutrient applications to Sesame (Sesamum indicum L.) and their influence on yield and selected yield components. Also, determining the variation of contributions traits with seed yield of Sohag1 sesame variety under studied treatments in newly reclaimed soil condition. The experiment was conducted in split-plot design with three replications during the 2013 and 2014 growing summer seasons with four nitrogen rates as the main treatment and three rates of foliar micronutrients as sub plots. Results indicated that significant N levels and application of mixture of foliar micronutrients treatments for all studied traits in both seasons. The higher nitrogen rate 80 kg fad -1 (fad.=0.42ha) gave the highest averages for most traits except oil percentage was decreased in higher N level rate. Also, application of 400 g/fad foliar micronutrients led to increase for all studies traits, and the interaction between 80 kg N /fad with 400 g/fad foliar microelement gave the highest means for all studies traits in both seasons except harvest index was 60 kg fad -1 with 400 g/fad in the 1 st season and 40 kg fad -1 with 400 g/fad in 2 nd season. On the other hand, the highest value of oil percentage was recorded due to the interaction between 20 kg N /fad and 400 g/fad foliar micronutrients. According, the path way analysis of different traits contribute to seed yield per faddan show that the plant height followed by seed yield/plant and harvest index exhibited high positive direct effects, while the number of capsules /plant through weight of capsules and through seed yield /plant followed by seed yield /plant through weight of capsules /plant exhibited high positive the indirect effect.

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Section: Methodsmentioning

confidence: 99%

Sesame (Sesamum indicum L.) yield and yield components influenced by nitrogen and foliar micronutrient applications in the Fayoum region, Egypt

El-Sherif

2016

Egypt. J. Agron.

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“…All leaves were air dried to a constant moisture content. Subsamples of the leaves of each species were then analyzed for oven dry mass (105°C for 48 h), moisture content, ash mass (500° for 12 h), total nitrogen (macro-Kjeldahl; Wilde et al 1972) known amount (usually 10 g) of air-dried leaves of a single species was placed in nylon mesh bags (20 x 20 em). On 23 October 1976, the bags of leaves were anchored in the litter layer of the forest floor.…”

Section: Methodsmentioning

confidence: 99%

Nitrogen and Lignin Control of Hardwood Leaf Litter Decomposition Dynamics

Melillo¹,

Aber²,

Muratore³

1982

Ecology

2,316

1,269

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Abstract. The effects of initial nitrogen and lignin contents of six species of hardwood leaves on their decomposition dynamics were studied at the Hubbard Brook Experimental Forest. Rate constants (k) for annual leaf mass loss ranged from -0.08 to -0.47. The rate constants (k) had a negative linear correlation (r 2 = .89) with the ratio of initial lignin concentration to initial nitrogen concentration. Decomposition dynamics of the litter materials were described by inverse linear relationships between the percentage of original mass remaining and the nitrogen concentration in the residual material. Initial lignin concentration was highly correlated (r 2 = .93) with the slope of the inverse linear relationship for each of the litter types.

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“…Unamended soil had a pH of 5.2 and contained 12 mg P/kg P, 18 mg exchangable K/kg, 179 mg exchangable Ca/kg, 46 mg exchangable Mg/kg, 0.5% N (w/w), and 1.3% organic matter. P content of the unamended soil would be considered extremely low for pine production (30). Soil either received inoculum of Hebeloma arenosa in leached vermiculite-peat substrate or leached nonfungal vermiculite-peat at a rate of 12% v/v.…”

Section: Methodsmentioning

confidence: 99%

Phosphorus Distribution in Red Pine Roots and the Ectomycorrhizal Fungus Hebeloma arenosa

MacFall¹,

Slack²,

Wehrli³

1992

Plant Physiol.

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Red pines (Pinus resinosa Ait.) were grown in a pasteurized sandy loam either unamended with phosphate or fertilized with one of two levels of phosphate (34 or 136 mg/kg) as superphosphate, and with and without addition of Hebeloma arenosa inoculum. Shoot and total dry weights of mycorrhizal seedlings grown in soil unamended with P were greater than those for nonmycorrhizal seedlings grown in the same soil, but less than the dry weights of seedlings grown in soil amended with middle to high levels of P. Mycorrhizal infection was inhibited at the highest level of P amendment. 31P nuclear magnetic resonance spectra of intact mycorrhizal roots showed the presence of two dominant peaks, orthophosphate (Pi) and polyphosphate (polyP). The polyP peak was absent in spectra of nonmycorrhizal roots. The ratio for areas under the two peaks, Pi/polyP, was 1.8 for mycorrhizal roots grown in both unamended soil and soil that had received middle levels of superphosphate. Apparently, the fungus strongly mediates the supply of phosphate to the tree through the production of polyP, even at growth-limiting levels of soil P, and regulates compartmentalization of P in the mycorrhizal roots.Mycorrhizal fungi can take up, store, and translocate P while forming mycorrhizal associations with the host plant (6, 9). Autoradiographic studies have shown uptake and translocation of P both toward the host plant and toward the hyphal tips through the fungal mycelium (4, 11), as well as accumulations within the mycorrhizae.Harley and Smith (9) summarized studies on the uptake of P by mycorrhizae and suggested that phosphate uptake by the host tissue is through the fungal symbiont. There appear to be at least two pools of phosphate within the mycorrhizal structure, a small pool of phosphate that is readily translocated from the fungus to the host, and a larger, accumulated pool of relatively inactive, inorganic phosphate. Light microscopic studies have shown the presence of inorganic phosphate as metachromatic staining granules within the fungal '

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Soil and Plant Analysis for Tree Culture

Cited by 224 publications

References 0 publications

Sesame (Sesamum indicum L.) yield and yield components influenced by nitrogen and foliar micronutrient applications in the Fayoum region, Egypt

Sesame (Sesamum indicum L.) yield and yield components influenced by nitrogen and foliar micronutrient applications in the Fayoum region, Egypt

Nitrogen and Lignin Control of Hardwood Leaf Litter Decomposition Dynamics

Phosphorus Distribution in Red Pine Roots and the Ectomycorrhizal Fungus Hebeloma arenosa

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