Biology and Fertility of Soils
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Ecological characteristics of a nitrogen-saturated coniferous forest in The Netherlands
Biology and Fertility of Soils - Tập 26 - Trang 258-267 - 1998
Wekerom forest shows a high nitrogen (N) load, and the first signs of N saturation. This characterization is based on the high N content of the needles, the high nitrate-N (NO3-N) mobilization and low cation mobilization from the organic horizon. The N cycle in this forest has been transformed into an „open flow” system, in which the ammonium-N, deposited in large quantities from the atmosphere, ...... hiện toàn bộ
Effects of marigold (Tagetes sp.) roots on soil microorganisms
Biology and Fertility of Soils - Tập 27 - Trang 149-154 - 1998
Marigolds (genus Tagetes) suppress populations of soil endopathogenic nematodes such as Pratylenchus penetrans and Meloidogyne species. Nematode suppression by marigolds is thought to be due to thiophenes, heterocyclic sulfur-containing molecules abundant in this plant. When activated, thiophenes such as α-terthienyl produce oxygen radicals. If marigold roots release such a powerful biocidal agen...... hiện toàn bộ
Sorption of methyl-parathion and carbaryl by an organo-bentonite
Biology and Fertility of Soils - Tập 42 - Trang 457-463 - 2006
The modification of bentonite clays by cetyltrimethylammonium bromide (CTMAB) surfactant via cation-exchange produces materials (“organo-clays”) with an increased capacity for sorbing organic compounds such as pesticides. The sorption from solutions of two nonionic pesticides, methyl-parathion and carbaryl, by an organo-bentonite has been investigated. The pesticides are partitioned into the surfa...... hiện toàn bộ
Effects of moisture and temperature on C and N mineralization from surface-applied cover crop residues
Biology and Fertility of Soils - Tập 57 - Trang 485-498 - 2021
Cover crop (CC) decomposition and subsequent release of nitrogen (N) are highly influenced by residue water potential (ψ) and temperature (T). To evaluate how carbon (C) and N mineralization from surface-applied CC residues responds to changes in ψ and T, a controlled microcosm experiment was conducted for 150 days with three CC residues (early-killed cereal rye (Secale cereale L.), late-killed ce...... hiện toàn bộ
Performance of phosphate-solubilizing bacteria in soil under high phosphorus conditions
Biology and Fertility of Soils - - 2013
Organic amendments differ in their effect on microbial biomass and activity and on P pools in alkaline soils
Biology and Fertility of Soils - - 2013
Spatial variation in soil compaction, and the burrowing activity of the earthworm Aporrectodea caliginosa
Biology and Fertility of Soils - Tập 39 - Trang 360-365 - 2004
The effects of soil compaction on earthworm ( Aporrectodea caliginosa nocturna) activity were studied using pot experiments. Two compaction pressures were used when packing the pots; loose soil was packed by applying a pressure of 96 kPa, and compact soil was packed using a compaction pressure of 386 kPa. “Split pots” which contained both loose and compact soil were also used. In split pots periph...... hiện toàn bộ
Converting acidic forests to managed plantations reduces soil nitrogen loss by inhibiting autotrophic nitrification while inducing nitrate immobilization in the tropics
Biology and Fertility of Soils - - Trang 1-13 - 2023
Soil gross nitrogen (N) transformation rates are highly sensitive to land use change. However, understanding the effect of land use change on internal N cycling patterns and its underlying mechanisms in tropical soils remains elusive. Here, four typical land uses including forest (> 400 years), eucalyptus (15 years), rubber (35 years), and paddy field (40 years) plantations in tropical region of C...... hiện toàn bộ
Optimizing phosphorus fertilization in an intensive vegetable-rice cropping system
Biology and Fertility of Soils - Tập 40 Số 4 - Trang 277-283 - 2004
A study was conducted in a sweet pepper-maize-rice cropping system in six farmers’ fields in Batac, Ilocos Norte, the Philippines, to determine the optimum P fertilizer rate for sweet pepper that will benefit the succeeding crops, maximize system-level productivity and profitability, and reduce the excessive accumulation of P in the soil. Single super phosphate was applied to sweet pepper at rates...... hiện toàn bộ
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