Nitrogen mineralization in native cultivated and abandoned fields in shortgrass steppe

1995 ◽  
Vol 171 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Tamiko Ihori ◽  
Ingrid C. Burke ◽  
Paul B. Hook
2018 ◽  
Vol 13 (1) ◽  
pp. 23
Author(s):  
Rosileyde Golçalves Siqueira Cardoso ◽  
Adriene Woods Pedrosa ◽  
Mateus Cupertino Rodrigues ◽  
Ricardo Henrique Silva Santos ◽  
Paulo Roberto Cecon ◽  
...  

The knowledge about the rate of decomposition and nitrogen mineralization of green manures provides synchronization with the higher absorption stage by the coffee tree. The rate of decomposition and nitrogen mineralization varies according to the species of green manure and with the environmental factors. The aim of the present study was to evaluate the decomposition and nitrogen mineralization of two green manures intercropped with coffee trees for three different periods. The experiment was divided into two designs for statistical analysis, one referring to the characterization of plant material (fresh mass, dry matter, dry matter content, nitrogen concentration and accumulation in the jack bean (Canavalia ensiformis) and hyacinth bean (Dolichos lablab) and another to evaluate the rate of decomposition and N mineralization of these species. The decomposition rate decreased in both species as their growth time increased in the field. The decomposition was influenced by the phenology of green manures. Nitrogen mineralization of the jack bean decreased as the growth period in the field increased and was faster than hyacinth bean only when cut at 60 days. The N mineralization was slower than mass decomposition in both species.


Author(s):  
Olga Teush

The article is devoted to the names of the shrubs and bushes in the dialects of European North of Russia. The whole complex of lexemes is analyzed in relation to the origin and semantic connections of the words. The article determines the etymological origins of the key lexeme in the group – «a bush» with a reconstructed meaning «to stand, to stick out of the ground» . The research describes dialect derivatives of the root «kust-«. The author identifies contaminated words on the basis of the seme «dense». Northern Russian dialect names of the bush or shrub are considered in the onomasiological, semasiological, and lexical aspects. The article performs analysis of collective forms derived from «vitsa» as a flexible man-made rod, a branch, and «prut» as «a thin broken or cut branch without leaves» with Slavic origin. The active use of Russian roots like «ros- / rost- / rast-» of Indo-European antiquity is noted. Moreover, the article describes numerous species names. The largest number of nominations is discovered for the willow shrub: five roots are involved. The root «iv-« in dialects appears both in the original version and with metathesis (>«vi-«). In Northern Russian dialect zone the most active word formations are derived from the proto-Slavic origin of the root «bred-«. They form an extensive word-formation nest. The author interprets species appellative names of juniper, cherry bush, rose hip, hawthorn, gooseberry, hazel bushes. The article points out a wide use of names used to describe a dense bush with a root «chap- / tsap-» in the dialects of European North of Russia. The article analyzes the lexemes used to name the shrubs growing on the hills. The most numerous words are the names of water-bushes. Secondary names of shrubs and bushes growing on the hills or in the forests and marshlands are more rarely used. Descriptive names of scrup in abandoned fields are used in only one context. Pragmatic and metaphorical names are infrequent.


2004 ◽  
Vol 68 (2) ◽  
pp. 489 ◽  
Author(s):  
R. L. Haney ◽  
A. J. Franzluebbers ◽  
E. B. Porter ◽  
F. M. Hons ◽  
D. A. Zuberer

CATENA ◽  
2021 ◽  
Vol 203 ◽  
pp. 105352
Author(s):  
Qianqian Zuo ◽  
Shaojun Wang ◽  
Ping Wang ◽  
Qianbin Cao ◽  
Shuang Zhao ◽  
...  

2000 ◽  
Vol 32 (10) ◽  
pp. 1345-1352 ◽  
Author(s):  
Joann K. Whalen ◽  
Peter J. Bottomley ◽  
David D. Myrold

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