geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

The effect of cropping systems and soil treatment on the water-stable aggregates in a claypan soil in southeastern Kansas


, : The effect of cropping systems and soil treatment on the water-stable aggregates in a claypan soil in southeastern Kansas. Agronomy Journal 42(10): 475-477

Water-stable aggregates, moisture equivalent values, organic carbon contents, and total nitrogen contents were evaluated on soil samples from plots under different soil treatments and cropping systems at the Columbus Experiment Field in southeastern Kansas. The plot treatments had been in effect for 22 years at the time the samples were taken. Differences in the amount of aggregation, apparently due to the kinds of crops previously grown, proved to be highly significant. Alfalfa appeared to have caused an increase in the amount of water-stable aggregates in the soil. The residual effect of alfalfa on aggregation appeared to last as long as 8 years after the alfalfa was turned under. The treatment of the soil under similar crops with superphosphate, manure, or lime, apparently caused no significant difference in the amount of aggregation under conditions of this investigation. At about the 7% level, there was a negative correlation between the amount of aggregation and the carbon-nitrogen ratio. Aggregation correlated with no other factor studied.

US$29.90


Other references

Kristofikova, Z.; Platilova, V.; Klaschka, J., 2003: Age- and sex-dependent effects of ethanol on hippocampal hemicholinium-3 sensitive choline carriers during postnatal development of rats. Vulnerability of hippocampal hemicholinium-3 (HC-3)-sensitive carriers to ethanol was evaluated in vitro during rat postnatal development. The high-affinity uptake of (3H)choline (HACU) and the specific binding of (3H)HC-3 were measured on synapto...

Anonymous, 1995: Talkradio talks healthcare. CareAmerica's media joint venture works to promote healthier lifestyles throughout southern California. "Partners in Caring" is a unique community awareness campaign to promote healthier lifestyles throughout southern California. The media joint venture links CareAmerica and KABC Talkradio in Los Angeles. The synergy works on several diffe...

Nagasu, M.; Sakai, K.; Ito, A.; Tomita, S.; Temmyo, Y.; Ueno, M.; Miyagi, S., 2007: Prevalence and risk factors for low back pain among professional cooks working in school lunch services. The prevalence of self-reported low back pain among professional cooks was estimated to examine the effects of daily life conditions, job-related factors, and psychological factors on this disorder. Data was collected using a mailed self-administe...

Kanauchi,M.; Bamforth,C.W., 2008: The relevance of different enzymes for the hydrolysis of beta -glucans in malting and mashing. beta -Glucosidase and to a lesser extent endo- beta 1-4-glucanase are present in significant quantity in raw barley. These enzymes, as well as endo- beta 1-3, 1-4-glucanase, endo- beta 1-3-glucanase and exo- beta 1-3-glucanase, increase in activit...

Bubley, G.J.; Smith, B.; Masiello, D.; Crosby, K.; Balk, S., 2003: Increased expression of phospho-akt and erk1/2 in metastatic bone marrow samples from patients with androgen-independent prostate cancer. Proceedings of the American Association for Cancer Research Annual Meeting 44: 850, July

Zheng, Y.; Zhang, Y-Jin.; Larochelle, H., 2015: A Deep and Autoregressive Approach for Topic Modeling of Multimodal Data. Topic modeling based on latent Dirichlet allocation (LDA) has been a framework of choice to deal with multimodal data, such as in image annotation tasks. Another popular approach to model the multimodal data is through deep neural networks, such a...

Husslein, P.; Kubista, E.; Egarter, C., 1987: Obstetrical analgesia with tramadol--results of a prospective randomized comparative study with pethidine. Morphine derivatives are the most frequently used analgetic substances in obstetrics today. Nevertheless, nausea, vomiting, weariness, and somnolence are common side effects of these drugs. Moreover opiates exhibit a depressive effect on ventilato...

Caplan, R.M., 1970: Superficial hemorrhagic fissures of the skin. Archives of Dermatology 101(4): 442-451

Anonymous, 2013: Desenvolvimento e avaliacao de produtos cosmeticos para a higiene capilar contendo tensoativos “nao-sulfatados. Produtos cosm ticos para a higiene capilar promovem a remo o de gordura, suor, poeira, c lulas mortas, micro-organismos e res duos de outros cosm ticos do couro cabeludo e do cabelo. Com esta finalidade, foi proposto o desenvolvimento e avalia o d...

Chaer, R.; Sam, A.; Teresi, M.; Cintron, J., 2005: Endometriosis-induced acute small and large bowel obstruction: rare clinical entities. The extragonadal manifestations of intestinal endometriosis necessitating immediate abdominal surgical exploration are, to date, sparsely represented within the literature. We present two cases of acute complete small and large bowel obstruction s...