Plant Response to Soils, Site Preparation, and Initial Pine Planting Density

Henry A. Pearson; Gale L. Wolters; Ronald E. Thill; Alton Martin; V. Clark Baldwin

doi:10.2307/4003062

Understory Plant Response to Site Preparation and Fertilization of Loblolly and Shortleaf Pine Forests

Journal of Range Management ◽

10.2307/4003563 ◽

1998 ◽

Vol 51 (1) ◽

pp. 47 ◽

Cited By ~ 4

Author(s):

Dale G. Brockway ◽

Gale L. Wolters ◽

Henry A. Pearson ◽

Ronald E. Thill ◽

V. Clark Baldwin ◽

...

Keyword(s):

Site Preparation ◽

Plant Response ◽

Pine Forests ◽

Shortleaf Pine ◽

Understory Plant

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Effects of Mechanical Site Preparation on Microsite Availability and Growth of Planted Black Spruce in Canadian Paludified Forests

Forests ◽

10.3390/f10080670 ◽

2019 ◽

Vol 10 (8) ◽

pp. 670 ◽

Cited By ~ 4

Author(s):

Mohammed Henneb ◽

Osvaldo Valeria ◽

Nelson Thiffault ◽

Nicole J. Fenton ◽

Yves Bergeron

Keyword(s):

Organic Matter ◽

Treatment Effectiveness ◽

Black Spruce ◽

Wood Fiber ◽

Site Preparation ◽

Planting Density ◽

Organic Layer ◽

Mechanical Site Preparation ◽

Decomposition Of Organic Matter ◽

Successful Establishment

Low productivity caused by paludification in some parts of the closed black spruce (Picea mariana (Mill.) B.S.P) dominated boreal forest threatens the provision of ecosystem services, including wood fiber production. The accumulation, over time, of organic matter in paludified soils leads to an anaerobic environment that reduces microbial activity, decelerates decomposition of organic matter, and generates nutrient-poor microsites for regeneration. Consequently, it results in significant impacts on site productivity. Considering its ability to disturb the soil, mechanical site preparation (MSP) is viewed as a potential treatment that can help restore productivity of paludified sites following harvesting. We conducted a field experiment to verify if (1) the availability of microsites conducive to reforestation varies with MSP, microtopography (slope and aspect) and initial OLT conditions; (2) the growth of planted seedlings depends on the intensity of mechanical disturbance of the organic layer, type of microsite, planting density, presence of Ericaceae, and the planting position and depth; (3) there are direct and indirect causal relationships between microsites availability after MSP, OLT, microtopography, planting quality and seedlings growth; and (4) if mechanical site preparation and microsite type exposed affect the Ericaceae cover after planting. Our results confirmed that MSP is effective in establishing conditions that permit a productive regeneration cohort on these paludified sites. To ensure successful establishment of plantations on these sites, it is necessary, however, to distinguish between those that are slightly or moderately paludified from those that are highly paludified, as treatment effectiveness of different MSP types depends on organic layer thickness. Our results also show that preference should be given to some microsite types as clay and mixed-substrate microsites for planting to ensure sufficient availability of water and nutrients for seedlings.

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The plant response to heat requires phase separation

Nature ◽

10.1038/d41586-020-02442-x ◽

2020 ◽

Vol 585 (7824) ◽

pp. 191-192 ◽

Cited By ~ 1

Author(s):

Simon Alberti

Keyword(s):

Phase Separation ◽

Plant Response

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Proper planting density for direct seedling of 5 years old ginseng in rain shelter house

10.1055/s-0039-3400147 ◽

2019 ◽

Author(s):

YJ Yoon ◽

KJ Lee ◽

JH Yi ◽

YM Mo ◽

GW Lee ◽

...

Keyword(s):

Planting Density

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Growth and yield of okra (Abelmoschus esculentus (L.) Moench) grown in the marginal upland area of Sta. Rita, Samar as influenced by different planting densities and mulching materials

Annals of Tropical Research ◽

10.32945/atr39sa4.2017 ◽

2017 ◽

pp. 44-54

Author(s):

Zenaida Gonzaga ◽

Warren Obeda ◽

Ana Linda Gorme ◽

Jessie Rom ◽

Oscar Abrantes ◽

...

Keyword(s):

Bare Soil ◽

Abelmoschus Esculentus ◽

Growth And Yield ◽

Planting Density ◽

Rice Hull ◽

Plastic Mulch ◽

Lady’S Finger ◽

Materials Used ◽

Set Up ◽

A Minor

Okra or Lady’s finger, botanically known as Abelmoschus esculentus (L.) Moench, is a tropical and sub-tropical indigenous vegetable crop commonly grown for its fibrous, slimy, and nutritious fruits and consumed by all classes of population. It has also several medicinal and economic values. Despite its many uses and potential value, its importance is under estimated, under-utilized, and considered a minor crop and little attention was paid to its improvement. The study was conducted to evaluate the effects of different planting densities and mulching materials on the growth and yield of okra grown in slightly sloping area in the marginal uplands in Sta. Rita, Samar, Philippines. A split-plot experiment was set up with planting density as main plot and the different mulching materials as the sub-plot which were: unmulched or bare soil, rice straw, rice hull, hagonoy and plastic mulch. Planting density did not significantly affect the growth and yield of okra. Regardless ofthe mulching materials used, mulched plants were taller and yielded higher compared to unmulched plants. Moreover, the use of plastic mulch resulted to the highest total fruit yield. The results indicate the potential of mulching in increasing yield and thus profitability of okra production under marginal upland conditions.

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An Overview of Plant Response to Salt Stress: About hormone signaling pathway

Institute of Life Science and Natural Resources ◽

10.33147/lsnrr.2018.26.1.65 ◽

2018 ◽

Vol 26 ◽

pp. 65-71

Author(s):

Chan Young Jeong ◽

Hojoung Lee

Keyword(s):

Salt Stress ◽

Signaling Pathway ◽

Plant Response ◽

Hormone Signaling

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Effect of N management approaches and planting densities on nitrogen accumulation by transplanted rice

Acta Agronomica Hungarica ◽

10.1556/aagr.53.2005.4.6 ◽

2005 ◽

Vol 53 (4) ◽

pp. 405-415 ◽

Cited By ~ 2

Author(s):

P. Janaki ◽

T. M. Thiyagarajan

Keyword(s):

Grain Yield ◽

Uptake Rate ◽

Aboveground Biomass ◽

N Uptake ◽

Planting Density ◽

Transplanted Rice ◽

The Mean ◽

N Uptake Rate ◽

Management Approaches ◽

N Management

Field experiments were conducted during 1998 and 1999 in June-September with rice variety ASD18 at the wetland farm, Tamil Nadu Agricultural University, Coimbatore, India to find out theeffect of N management approaches and planting densities on N accumulation by transplanted rice in a split plot design.The main plot consisted of three plant populations (33, 66 and 100 hills m-2) and the sub-plot treatments of five N management approaches. The results revealed thatthe average N uptake in roots and aboveground biomass progressively increased with growth stages. The mean root and aboveground biomass Nuptake were 26.1 to 130.6 and 6.4 to 17.8 kg ha-1, respectively. The N uptake of grain and straw was higher in theSesbania rostratagreen manuring + 150 kg N treatment, but it was not effective in increasing the grain yield. The mean total N uptake was found to be significantly lower at 33 hills m-2(76.9 kg ha-1) and increased with an increase in planting density (100.9 and 117.2 kg ha-1at 66 and 100 hills m-2density). N application had a significant influence on N uptake and the time course of N uptake in all the SPAD-guided N approaches. A significant regression coefficient was observed between the crop N uptake and grain yield. The relationship between cumulative N uptake at the flowering stage and the grain yield was quadratic at all three densities. The N uptake rate (µN) was maximum during the active tillering to panicle initiation period and declined sharply after that. In general, µNincreased with an increase in planting density and the increase was significant up to the panicle initiation to flowering period.thereafter, the N uptake rate was similar at densities of 66 and 100 hills m-2.

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