Soil capacity as a major carbon (C) sink is influenced by land use. Estimates of soil organic (SOC) sequestration have mostly focused on topsoils [0–30 cm official Intergovernmental Panel Climate Change (IPCC) depth]. We investigated SOC stocks and their quality land-use changes. samples were collected from five depths down to 100 three adjacent fields each representing different use—forest, cassava, rice paddy—in Northeast Thailand. Sequestration in under all uses was higher, indicated...

A pot experiment involving growing three consecutive corn crops in two contrasting tropical soils—a coarse-textured, Al-rich Ultisol and a fine-textured, Mn-rich Oxisol—treated with eucalyptus wood biochars—at low (350 °C) high (800 pyrolysis temperatures—at weight per rates of 0%, 1%, 2% 4%, was conducted to assess their effects on the soil organic carbon (SOC) stability (soil C remaining relative initial C) 144 d after biochar application (after third crop harvest). The temperature had...

The ability of biochar applications to alter greenhouse gases (GHGs) (CO, CH, and NO) has been attracting research interest. However, inconsistent published results necessitate further exploration potential influencing factors, including properties, rates, soil textures mineralogy, their interactions. Two short-term laboratory incubations were conducted evaluate the effects different biochars: a with low ash (2.4%) high-volatile matter (VM) (35.8%) contents produced under low-temperature...

While lettuce offers essential human nutrients, it also contains anti-nutrients, particularly nitrate (NO3−). The use of neem leaf extract as a natural nitrification inhibitor has proven itself promising to remediate tissue NO3− content. This study evaluated the effects on soil properties, nitrification, growth, yield, and Five treatments were evaluated: (i) no (control), (ii) nitrapyrin, three rates based dry weight raw material: (iii) 1 g kg−1 (Neem1), (iv) 2 (Neem2), (v) 4 (Neem4). Neem...

A factor that causes inconsistencies in rice yield receiving biochar reported the literature has been identified as length of time after incorporation into soil prior to planting. There is limited information on effect varying lengths properties and growth. This study aimed determine effects husk (RHB) an acidic paddy before transplanting yield. greenhouse experiment was conducted using a highly weathered subjected periods RHB at various lengths, including 0, 15, 30, 60 days (DBT). The under...

The increasing demand for crop production has resulted in the excessive use of chemical fertilizers and pesticides, which is a problem due to toxic residuals.However, application biochar been used absorb pesticides reduce contaminants soil increase fertility spring onion growth.The objective this experiment was investigate effects on residual adsorption soil, as well yield growth onions.The experimental field located at farm Nakhon Phanom Province, Thailand.Three treatments were implemented...

1. Adair, C.R., Beachell, H.M., Jodon, N.E., Johnston, T.H., Thysell, J.R., Green, V.E., Jr., Webb, B.D., Atkins, J.G., 1966. Rice breeding and testing methods in the U.S. USDA Agricultural Research Services Handbook 289. [In] U.S.: varieties production. Dept. of Agriculture, 19-64. Google Scholar

1. Adams, M.L., Hawke, D.J., Nilsson, N.H.S., Powell, K.J., 2000. The relationship between soil solution pH and Al3+ concentrations in a range of South Island (New Zealand) soils. Soil Research 38(1), 141-154. https://doi.org/10.1071/SR9809.... CrossRef Google Scholar

Soil conservation practices, such as reduced and no tillage, have been found to enhance soil nitrogen (N) sequestration through decreasing the rate of N mineralisation added organic materials. Nitrogen is not only affected by but also quality (chemical composition) residues. This study evaluated interaction residue disturbance on in a sandy soil. A 112-day incubation experiment was conducted with two levels (undisturbed disturbed conditions) five plant amendments contrasting quality. The (N,...

Background: Cricket feces is a potential high-quality soil amendment, but there currently no established optimum rate for its application in paddy soils with varying moisture contents. This study therefore aimed to evaluate the effects of varied rates cricket on properties, rice growth, and yield differing Methods: Two factors were evaluated: (i) maximum water-holding capacity (WHCmax) flooded soils, (ii) applied at 0 (unamended), 3.125 (low), 6.25 (medium), 12.5 (high) t/ha. Result: The...

A greenhouse experiment was conducted to estimate the influence of various application rates eucalyptus-derived biochar combined with cricket frass on soil properties and N transformation, and, in turn, affecting both shoot biomass yield nitrate (NO3-) contents Chinese kale (Brassica oleracea). Two consecutive crops were grown investigate temporal effect amendments biochar. Six biochar, 0%, 0.125%, 0.25%, 0.5%, 1%, 2% w/w combination 0.55% frass, applied only once at start sandy loam soil....

A vegetable’s high antinutrients, nitrate (NO3−) and oxalate, could be remediated by neem seed extract. The combined use of extract with mineral fertilizer cricket frass was conducted to evaluate their effects on amaranth’s tissue NO3− oxalic acid contents inhibiting nitrification. five soil amendments were investigated: unamended, fertilizer, three rates (3.125 Mg ha−1, 6.25 12.5 ha−1), two extract: without (−Nm) (+Nm) Only the applied soils receiving fertilizers decreased NO3−−N (0.82 g...

1. Abbasi, M.K., Hina, M., Tahir, M.M., 2011. Effect of Azadirachta indica (neem), sodium thiosulphate and calcium chloride on changes in nitrogen transformations inhibition nitrification soil incubated under laboratory conditions. Chemosphere 82(11), 1629–1635. https://doi.org/10.1016/j.chem.... CrossRef Google Scholar

Background: Soil pH is determined using a variety of methods. The key differences among them are the electrolytes and soil-to-suspension ratios. However, an optimal procedure tailored to particular soil required. This study, therefore, aimed evaluate effects ratios on optimise measurement methods for acidic-coarsely textured soil. Methods: Varied standard (water, 0.01 M CaCl2 1 KCl) (1:1, 1:2.5 1:5 w/v) were used measure thirty samples acidic-coarsest Result: values observed in following...

Background: Improvement of nitrogen use efficiency (NUE) chemical fertilizers and N-rich-organic amendments using natural mineralization inhibitors, like neem extract, was recommended to minimize (N) loss. This study hence aimed evaluate the effects combined uses seed extract with cricket feces on soil N plant NUE. Methods: The treatment combinations included i) amending materials involving unamended (Un), fertilizer at a rate 312.5 kg ha-1, 100 P ha-1 K (CF) three rates (CrF) [3.125...