Soil nutrient availability, poplar growth and biomass production on degraded agricultural soil under fresh grass mulch

Fang, Shengzuo; Xie, Baohua; Liu, Jiujun

doi:10.1016/j.foreco.2007.11.042

Cited by 30 publications

(28 citation statements)

References 36 publications

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“…We only investigated inorganic N content in the surface soil (0-20 cm) in the present study, and no consistent tendency in inorganic N content of the soil was observed at the five sampling times for different tree spacings. However, most of the poplar root systems were distributed in soil of 20-40 cm depth [40], therefore, an investigation of deeper soil layer (20-50 cm) is required in order to demonstrate the effects of tree spacings on N availability in the poplar plantations. …”

Section: Effects Of Tree Spacing On Soil N Availabilitymentioning

confidence: 99%

Influence of Tree Spacing on Soil Nitrogen Mineralization and Availability in Hybrid Poplar Plantations

Yafei

Fang

Tian

et al. 2015

Forests

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Nitrogen (N) availability and mineralization are key parameters and transformation processes that impact plant growth and forest productivity. We hypothesized that suitable plantation spacing can lead to enhanced soil N mineralization and nitrification, which in turn promote tree growth. Studies were conducted to evaluate seasonal patterns of soil inorganic N pools as well as rates of nitrification and N mineralization of three soil layers under four tree spacing treatments. Results showed tree spacing significantly affected annual net N mineralization, whereas inorganic N content in surface soils was significantly affected by tree spacing only during the growing season. The total annual cumulative net N mineralization ranged from 80.3-136.0 mg·kg −1 in the surface soils (0-20 cm), whereas the cumulative net N mineralization of 6 × 6 m and 4.5 × 8 m spacings was 65% and 24% higher than that of the 5 × 5 m, respectively. In general, tree spacing would affect N availability in soil by altering N mineralization rates, while high annual N mineralization was found in soils of low density plantations, with higher rates in square spacing than rectangular spacing. The obtained results suggest that suitable spacing could lead to enhanced N mineralization, but seasonal variation of soil N mineralization may not only be directly related to plantation productivity but also to understory vegetation productivity. OPEN ACCESSForests 2015, 6 637

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Section: Effects Of Tree Spacing On Soil N Availabilitymentioning

confidence: 99%

Influence of Tree Spacing on Soil Nitrogen Mineralization and Availability in Hybrid Poplar Plantations

Yafei

Fang

Tian

et al. 2015

Forests

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“…With the economic incentives and interests in fast-growing poplar hybrids for short-rotation production for pulp wood, fiber and veneer, poplar plantations have been recently established in northern plain and southwestern upland areas of China. High biomass production can be achieved by the use of intensive cultural management (Fang et al, 2008). Frequently applied agricultural management practices are careful site preparation, selected tree species, dense design, short rotation, irrigation and fertilization throughout the whole rotation period.…”

Section: Introductionmentioning

confidence: 99%

Effects of root pruning on the growth and rhizosphere soil characteristics of short-rotation closed-canopy poplar

Xing

et al. 2012

For. syst.

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When poplar trees planted at a high density are canopy-closed in plantation after 4-5 years of growth, the roots of adjacent trees will inevitably intermingle together, which possibly restricts the nutrient uptake by root system. Root pruning might stimulate the emergence of fine roots and benefit the tree growth of short-rotation poplar at the stage of canopy closing. The aim of this study is to evaluate the effects of root pruning on DBH (diameter at breast height, 1.3 m), tree height, nutrients (N, P and K) and hormones (indoleacetic acid and cytokinin) in poplar leaves, gas exchange variables (photosynthetic rate and stomatal conductance), and rhizosphere soil characteristics. Field experiment was carried out with four-yearold poplar (Populus × euramericana cv. 'Neva') planted in a fluvo-aquic loam soil in Shandong province, China in early April, 2008. Three root pruning treatments (severe, moderate and light degree) were conducted at the distances of 6, 8 and 10 times DBH on both inter-row sides of the trees to the depth of 30 cm, respectively. The results showed that the growth performance was obtained in the following order of treatments: moderate > light = control > severe. In the rhizophere soil, moderate and light pruning increased the microbial populations, enzymatic activities, and the concentrations of available N, P, K and organic matter. Generally, root pruning to improve tree growth and rhizosphere soil fertility can be recommended in canopy-closed poplar plantation. The appropriate selection of root pruning intensity is a pivotal factor for the effectiveness of this technique.Key words: root pruning method; poplar plantation; growth performance; rhizosphere soil fertility. ResumenEfectos de la poda de raíces sobre el crecimiento y las características de la rizosfera del suelo de los álamos de corta rotación en la etapa del dosel cerradoCuando los chopos plantados a alta densidad cierran el dosel de copas después de 4-5 años, las raíces de árboles adyacentes inevitablemente se mezclan, lo que posiblemente limita la absorción de nutrientes por el sistema radicular. La poda de raíces podría estimular la aparición de raíces finas y beneficiar al crecimiento de los álamos de corta rotación en la etapa del dosel cerrado. El objetivo de este estudio es evaluar los efectos de la poda de raíces en el DAP (diámetro a la altura del pecho, 1,3 m), altura de los árboles, los nutrientes (N, P y K) y las hormonas (ácido indolacético y citoquininas) en las hojas, variables de intercambio gaseoso (tasa de fotosíntesis y conductancia estomática) y característi-cas de la rizosfera del suelo. El experimento de campo se llevó a cabo con chopos (Populus × euramericana cv. 'Neva') de cuatro años de edad plantadas en un suelo franco fluvo-ácuico en la provincia de Shandong, China, a principios de abril de 2008. Se efectuaron tres tratamientos de poda de raíces (severa, moderada y el grado de luz) a distancias de 6, 8 y 10 veces DAP en ambos lados entre las filas de los árboles a la profundidad de 30 cm. Los res...

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“…Jika dibandingkan dengan tanah awal (Tabel 1), maka ketiga taraf menghasilkan peningkatan N-total tanah. Menurut Fang et al (2008) pemulsaan mampu meningkatkan N-total tanah secara signifikan sepanjang musim tanam dan bukan musim tanam. Mulsa berperan menutupi tanah sehingga mampu mengurangi hilangnya nitrogen ke udara.…”

Section: Gambar 1 Pengaruh Jenis Mulsa Terhadap Ph Tanah Inceptisol unclassified

“…Nilai P-tersedia dari masing-masing taraf tersaji pada Gambar 4 yang menunjukkan hasil tertinggi adalah 7 ppm pada mulsa jerami, hasil terendah adalah 5 ppm pada tanpa mulsa, sedangkan mulsa plastik hitam perak P-tersedianya 6 ppm. Menurut Fang et al (2008) bedengan dengan mulsa jerami memiliki kandungan P-tersedia yang jauh lebih tinggi dibanding dengan bedengan tanpa mulsa. Ptersedia pada perlakuan mulsa plastik hitam-perak dan jerami lebih tinggi daripada tanpa mulsa secara kimiawi berkaitan dengan pH tanah.…”

Section: Gambar 4 Pengaruh Jenis Mulsa Terhadap Ptersedia Tanah Inceunclassified

Sifat Kimia Tanah, Populasi Bakteri Pelarut Fosfat, Dan Hasil Cabai Pada Aplikasi Beberapa Jenis Mulsa Pada Inceptisol Ngemplak, Boyolali

2018

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<p align="left"><em>Mulch was often applied on chili pepper cultivation. It aimed to cover the soil from various factors which can reduce the yield. This research aims to study the effect of various types of mulch (silver-black plastic and straw) to soil chemical properties, population of PSB, and chili pepper yield (harvest time, weight of dry plant biomass, and weight of fresh fruit per plant), also to study the correlation between the population of PSB with chili pepper yield. The research has been conducted from December 2015 until October 2016, on an inceptisol field in Ngemplak, Boyolali. The variables of this research are soil properties (pH, organic-carbon, total-N, available-P, and exchangeable-K), total-PSB, and chili pepper yield (harvest time, a weight of dry plant biomass, and weight of fresh fruit per plant). The result showed that various types of mulch application significantly increased soil-pH, soil total-N, soil available-P, total-PSB, a weight of dry plant biomass, a weight of fresh fruit per plant, and fastened harvest time. It also tends to increase organic-carbon and soil exchangeable-K. There were strong correlations between total-PSB and harvest time, a weight of dry plant biomass, and weight of fresh fruit per plant. The best result showed by silver-black plastic mulch application.</em></p>

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Soil nutrient availability, poplar growth and biomass production on degraded agricultural soil under fresh grass mulch

Cited by 30 publications

References 36 publications

Influence of Tree Spacing on Soil Nitrogen Mineralization and Availability in Hybrid Poplar Plantations

Influence of Tree Spacing on Soil Nitrogen Mineralization and Availability in Hybrid Poplar Plantations

Effects of root pruning on the growth and rhizosphere soil characteristics of short-rotation closed-canopy poplar

Sifat Kimia Tanah, Populasi Bakteri Pelarut Fosfat, Dan Hasil Cabai Pada Aplikasi Beberapa Jenis Mulsa Pada Inceptisol Ngemplak, Boyolali

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