Results 61 to 70 of about 9,728 (209)

Selection maintains floral color polymorphism in scarlet paintbrush, Castilleja coccinea, reflecting combined ecological factors

American Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Premise Evolutionary theory predicts polymorphism should be rare; however, intraspecific variation in floral color is common and can be attributed to genetic drift, plasticity, or variable selection. Examining floral color polymorphism both within contact zones and across a species' range can reveal the mechanisms maintaining this variation ...
Emma Fetterly, Anna S. Braum, Chloe (Eun Sun) Kim, Katherine E. Wenzell, Mary V. Ashley, Laura Steger, Jeremie B. Fant   +6 more
wiley   +1 more source

PENGARUH DOSIS INOKULUM AZOLLA DAN PUPUK KALIUM ORGANIK TERHADAP KETERSEDIAAN K DAN HASIL PADI PADA ALFISOL JUMANTONO, KARANGANYAR [PDF]

, 2013
PENGARUH DOSIS INOKULUM AZOLLA DAN PUPUK KALIUM ORGANIK TERHADAP KETERSEDIAAN K DAN HASIL PADI PADA ALFISOL JUMANTONO, KARANGANYAR. Skripsi : Ransa Gustrada Syarif (H0709093). Pembimbing: Hery Widijanto, Sumarno, Sudadi. Program Studi: Agroteknologi,
Syarif, Ransa Gustrada
core  

Evaluation of phosphorus availability indices in acid Alfisols

Annals of Plant and Soil Research, 2021
To identify the most appropriate method of available phosphorus extraction from acid Alfisols of north east India, greenhouse pot experiments were conducted with two acid Alfisols (non-limed and limed), amended with six doses of P fertilization. Maize (Zea mays), as the test crop, was grown for 45 days, and the plant response was regressed against soil
openaire   +1 more source

Assessing impact of conservation agriculture practices on soil physical properties under on‐farm conditions in Central Ohio, USA

Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.
Abstract Basic indicators of soil health that influence water infiltration, root growth, gaseous exchange, and overall agronomic productivity are soil physical properties such as bulk density (BD), total porosity (TP), particle density (PD), and penetration resistance (PR).
Yadunath Bajgai, Rattan Lal, M. Scott Demyan, Klaus Lorenz, Alec Ogg, Noor Us Sabah   +5 more
wiley   +1 more source

Variabilidad de δ13C y δ15N en suelo y hojarasca de cacao en El Oro, Ecuador

Terra Latinoamericana, 2019
El cacao aporta niveles significativos de carbono (C) y nitrógeno(N) por las hojarascas; el cambio de manejo agronómico ocasiona variación en los contenidos de estos elementos en el suelo. El objetivo fue evaluar las variaciones de los isotopos de δ13C y
Salomón Barrezueta Unda, Antonio Paz González, Ángel Eduardo Luna Romero, Edwin Jaramillo Aguilar   +3 more
doaj   +1 more source

Exclusion of plant input affects the temperature sensitivity of soil organic carbon decomposition

Ecological Indicators, 2022
Plant residue input plays a vital role in cropland carbon (C) balance, which can be greatly affected by climate change. Our knowledge of the effect of plant residue on soil respiration is crucial for evaluating C exchange between the atmosphere and ...
Xiuwei Zhang, Biao Zhu, Fei-Hai Yu, Peng Wang, Weixin Cheng   +4 more
doaj   +1 more source

Seed Coat Resistance of Groudnut to Aspergillus Flavus and Their Stability Performance in the Field [PDF]

, 2011
One of the weaknesses of the groundnut is the easiness to be infected by fungi, especially Aspergillus flavus that produces aflatoxin. Seed from the field experiments for all step of selection (F5 until to multilocation yield test) after processed then ...
Kasno, A. (Astanto), Purnomo, J. (J), Sumartini, S. (Sumartini), Trustinah, T. (Trustinah)   +3 more
core  

Repeated use of anion‐exchange membranes in soils alters the membrane surface and phosphate‐P exchange capacity

Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.
Abstract Anion exchange membranes (AEMs) are widely used to assess soil phosphorus (P) cycling. However, the routine reuse of AEM for soil extractions may impact the surface properties of AEM and thus phosphate‐P exchange. We evaluated changes in AEM surface morphology, chemical composition, and phosphate‐P exchange capacity after varying degrees of ...
Chongyang Li, Finnleigh S. Woodings, Andrew J. Margenot   +2 more
wiley   +1 more source

Grau de compactação, propriedades físicas e rendimento de culturas em Latossolo e Argissolo Relative compaction, physical properties and crop yield in Oxisol and Alfisol

Pesquisa Agropecuária Brasileira, 2007
O objetivo deste trabalho foi avaliar os parâmetros físicos do solo e o rendimento das culturas da soja (Glycine max) e feijoeiro (Phaseolus vulgaris) em resposta ao grau de compactação de um Latossolo e um Argissolo. Nos dois solos, foram determinados a
Luis Eduardo Akiyoshi Sanches Suzuki, José Miguel Reichert, Dalvan José Reinert, Cláudia Liane Rodrigues de Lima   +3 more
doaj   +1 more source

Effect of three decade long application of chemical fertilizer and amendments on crop yield under maize - wheat cropping system in an acid alfisol [PDF]

, 2014
The results on the effect of three decade long term application of chemical fertilizers and amendments on the yield of continuous maize-wheat crop rotation in an acid alfisol at Palampur revealed that continuous omission of essential nutrients in a maize-
Kaushal, Vandana, Sharma, R. P., Sharma, S. P., Verma, Gayatri   +3 more
core   +2 more sources