Results 71 to 80 of about 1,779 (221)

Using Terrestrial Organic Matter to Reconstruct the Stable Carbon Isotope Composition of the Atmosphere

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 4, April 2026.
Abstract Carbon fluxes to Earth's atmosphere are reflected in the carbon isotope composition of atmospheric CO2 (δ13Catm). δ13Catm is used to track past changes to the global carbon cycle and is a variable in many paleoclimate proxies. However, existing δ13Catm proxy records derived from marine carbonates are relatively low‐resolution prior to the ...
Katarina A. Keating, Nathan D. Sheldon
wiley   +1 more source

Digital mapping of soil erodibility: A case study of the Ravang watershed, southern Iran

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 1, March 2026.
Abstract The Universal Soil Loss Equation incorporates soil erodibility as a key parameter for erosion quantification. This study focused on mapping soil erodibility patterns and identifying the primary factors influencing its spatial distribution within the Ravang watershed, located in southern Iran's Hormozgan Province.
Fahimeh Torkamani   +3 more
wiley   +1 more source

PENGARUH APLIKASI KOMPOS Crotalaria juncea L. TERHADAP KETERSEDIAAN DAN SERAPAN CA, Mg, S OLEH JAGUNG MANIS (Zea mays saccharata Sturt) DI ENTISOL WAJAK, MALANG

open access: yesJTSL (Jurnal Tanah dan Sumberdaya Lahan), 2020
Entisol is a type of soil at the initial development stage and has a texture dominated by sand fraction. This causes a decrease in soil quality and can reduce crop production.
Retno Suntari   +1 more
doaj   +1 more source

Soil organic matter and F1 hybrid cultivar influence Coffea arabica yields in south‐central Guatemala

open access: yesAgronomy Journal, Volume 118, Issue 2, March/April 2026.
Abstract Smallholders produce 60% of global coffee (Coffea arabica) supply but lack recommendations on nutrient management. We tested hypothesized N‐ and K‐driven yield gaps using on‐farm omission trials established across 21 fields in Guatemala. The effects of a single and combined application of N (285 kg ha−1) and K (350 kg ha−1) were evaluated for ...
Heidi Allen Asensio   +4 more
wiley   +1 more source

Soil, competition, and niche shifts shape the floral mosaic of an annual plant diversity hotspot

open access: yesAmerican Journal of Botany, Volume 113, Issue 3, March 2026.
Abstract Premise Plant species with affinity for harsh substrates often have well‐defined edaphic (soil) niches and are ideal for exploring questions of community assembly. Vertic clay soils are chemically and physically challenging to plant establishment and productivity, and annual plant communities associated with these soils of the San Joaquin ...
Emma R. Fryer   +5 more
wiley   +1 more source

KAJIAN MACAM PUPUK ORGANIK DAN DOSIS PUPUK P TERHADAP HASIL KACANG TANAH (Arachis hypogaea L.) Dl TANAH ENTISOL

open access: yesSains Tanah: Journal of Soil Science and Agroclimatology, 2001
The aim of the study was to know the affect of organic fertilizer kind and dosage of P fertilizer to yield of peanut (Arachis hypogaea L) on entisol. The research was carried out at Colomadu, Karanganyar from September 1999 to January 2000.
Sumarno, Sri Hartati, Hery Widijanto
doaj  

Exchangeable lead (Pb) in lowland paddy soils of Sri Lanka as affected by the differences in agro‐climatic zones, soil orders, and water sources

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 592-602, March 2026.
Lead (Pb) accumulation in the human body poses serious health risks. As rice is the staple food in Sri Lanka, with a high per capita intake (114 kg), there is a significant risk of Pb transfer through rice consumption. This study evaluated exchangeable Pb concentrations in soils and produced Pb distribution maps.
Anuththara Neththasinghe   +6 more
wiley   +1 more source

Nodulasi dan efektivitas rhizobium endogen tanah entisol dan vertisol pada tanaman kedelai (Gycine max (L.) Merril) [PDF]

open access: yes, 2008
INDONESIA: Kebutuhan kedelai yang terus meningkat harus diimbangi dengan penggunaan kedelai varietas unggul seperti kedelai varietas Sinabung dan upaya ekstensifikasi di bidang pertanian. Upaya ekstensifikasi dapat dilakukan dengan memanfaatkan tanah
Maharani, Putri Sukma
core  

Pemanfaatan Biochar Plus Terhadap Tanah Entisol Pesisir Pantai dan Tanaman Sawi Hijau (Brassica juncea L.)

open access: yes, 2020
The use of entisol soils can be maximized by adding organic matter. One ingredient that is able to maintain water availability and water resistance is biochar which is added to Tithonia as biochar plus.
Herman, Welly   +2 more
core   +2 more sources

Soil carbon, nitrogen, and biological activity as affected by land use and grassland management across North Carolina

open access: yesSoil Science Society of America Journal, Volume 90, Issue 2, March/April 2026.
Abstract Undisturbed land uses have the potential to enhance soil organic matter, but how and to what extent this occurs on private farms remains relatively unexplored. A cross‐sectional study of perennial grasslands and farm woodlots was undertaken across North Carolina to investigate stocks of soil organic C, total soil N, and soil‐test biological ...
Alan J. Franzluebbers
wiley   +1 more source

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