Assessing the Performance of Populus Caspica and Populus Alba Cuttings Under Different Irrigation Intervals

Asadi, Fatemeh; Alimohamadi, Afrooz

doi:10.17707/agricultforest.65.2.03

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…In general, the mean values of these parameters were higher in plants under a 12-day irrigation interval, with little or no difference between the 3-day and 6-day irrigation intervals (Figures 7 and 8). ISSN 2166-0379 2020 ISSN 2166-0379 2020 accumulation, tend to be negatively affected by longer irrigation intervals, given the less frequent water supply (Bagheri et al, 2012;Asadi and Alimohamadi, 2019). In this study, however, lower values of plant height and total dry mass were found in 3-day and 6-day irrigation intervals, compared to 12-day interval.…”

Section: Journal Of Agricultural Studiescontrasting

confidence: 46%

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

Mendes¹,

Cairo²,

Leite³

et al. 2020

JAS

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This study aimed to evaluate the effect of cattle manure on young plants of Khaya senegalensis submitted to different irrigation intervals. A greenhouse experiment was carried out during 2017 cold season, based in a 5x3 factorial arrangement – cattle manure fertilizing with 0, 10, 20, 30 and 40% doses, and 3-day, 6-day and 12-day irrigation intervals. Water potential, relative water content (RWC), water consumption (WC), water use efficiency (WUE), chlorophyll content estimation (SPAD index), plant height, stem diameter, plant total dry mass and free amino acid and proline content were measured. Irrigation intervals had no significant effect on physiological traits and plant water relationships, except for WUE, which was higher under 12-day irrigation interval. This was assumed as an indication of non-occurrence of water stress, even under the longest irrigation interval. Cattle manure, in turn, played a significant effect on these traits, except for water potential, irrespective of irrigation intervals. Increasing cattle manure doses improved RWC (just doses up to 20%), reduced WC and increased WUE, SPAD index, and both free amino acid and proline contents. On the other hand, growth-related parameters were not affected by cattle manure, but a significant effect of irrigation intervals was observed. Both plant height and total dry mass were lower under 3-day and 6-day irrigation intervals. We suspect a possibly low evapotranspiration, given the relatively low temperatures of that season (14-16 ºC), which may have reduced the demand for irrigation in the experimental period. Thus, soil moisture under the shorter irrigation intervals may have increased until reach to a close to saturation level, limiting the amount of soil oxygen and hampers nutrient uptake.

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Section: Journal Of Agricultural Studiescontrasting

confidence: 46%

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

Mendes¹,

Cairo²,

Leite³

et al. 2020

JAS

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“…This fact could have forced trees in Plot 3 to invest more in root development. However, trees in Plot 1 could reach water closer to the soil surface, therefore releasing biomass to invest in height growth, as it has been proven in other plantations [43][44][45]. All this plot-level variability in growing conditions has caused a high variability in tree height among trees of the same age.…”

Section: Simplified Volume and Height Equationsmentioning

confidence: 97%

Empowering Forest Owners with Simple Volume Equations for Poplar Plantations in the Órbigo River Basin (NW Spain)

Blanco

2021

Forests

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Hybrid poplar plantations are becoming increasingly important as a source of income for farmers in northwestern Spain, as rural depopulation and farmers aging prevent landowners from planting other labor-intensive crops. However, plantation owners, usually elderly and without formal forestry background, lack of simple tools to estimate the size and volume of their plantations by themselves. Therefore, farmers are usually forced to rely on the estimates made by the timber companies that are buying their trees. With the objective of providing a simple, but empowering, tool for these forest owners, simple equations based only on diameter were developed to estimate individual tree volume for the Órbigo River basin. To do so, height and diameter growth were measured for 10 years (2009–2019) in 404 trees growing in three poplar plantations in Leon province. An average growth per tree of 1.66 cm year−1 in diameter, 1.52 m year−1 in height, and 0.03 m3 year−1 in volume was estimated, which translated into annual volume increment of 13.02 m3 ha−1 year−1. However, annual volume increment was different among plots due to their fertility, with two plots reaching maximum volume growth around 11 years since planting and another at 13 years, encompassing the typical productivity range in plantations in this region. Such data allowed developing simple but representative linear, polynomial and power equations to estimate volume explaining 93%–98% of the observed variability. Such equations can be easily implemented in any cellphone with a calculator, allowing forest owners to accurately estimate their timber existences by using only a regular measuring tape to measure tree diameter. However, models for height were less successful, explaining only 75%–76% of observed variance. Our approach to generate simplified volume equations has shown to be viable for poplar, but it could be applied to any species for which several volume equations are available.

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Assessing the Performance of Populus Caspica and Populus Alba Cuttings Under Different Irrigation Intervals

Cited by 2 publications

References 13 publications

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

Effect of Cattle Manure on Young Plants of Khaya senegalensis Submitted to Different Irrigation Intervals

Empowering Forest Owners with Simple Volume Equations for Poplar Plantations in the Órbigo River Basin (NW Spain)

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