Management of Soil Fertility in a Long-Term Field Trial of Semi-arid Kenya

2012 ◽  
pp. 85-103
Author(s):  
F. M. Kihanda ◽  
G. P. Warren
Keyword(s):  
Soil Fertility ◽  
Field Trial ◽  
Semi Arid ◽  
Term Field

scholarly journals Discrimination of conventional and organic white cabbage from a long-term field trial study using untargeted LC-MS-based metabolomics

2014 ◽  
Vol 406 (12) ◽  
pp. 2885-2897 ◽  
Author(s):  
Axel Mie ◽  
Kristian Holst Laursen ◽  
K. Magnus Åberg ◽  
Jenny Forshed ◽  
Anna Lindahl ◽  
...  
Keyword(s):  
Field Trial ◽  
White Cabbage ◽  
Term Field

Changes in soil biological and biochemical characteristics in a long-term field trial on a sub-tropical inceptisol

2006 ◽  
Vol 38 (7) ◽  
pp. 1577-1582 ◽  
Author(s):  
R. Ebhin Masto ◽  
P.K. Chhonkar ◽  
Dhyan Singh ◽  
A.K. Patra
Keyword(s):  
Field Trial ◽  
Biochemical Characteristics ◽  
Term Field

Effects of Long-Term Fertilizer Application and Rainfall Distribution on Cotton Productivity, Profitability, and Soil Fertility in a Semi-arid Vertisol

2014 ◽  
Vol 45 (3) ◽  
pp. 362-380 ◽  
Author(s):  
G. R. Maruthi Sankar ◽  
K. L. Sharma ◽  
V. V. Gabhane ◽  
M. B. Nagdeve ◽  
M. Osman ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Fertilizer Application ◽  
Rainfall Distribution ◽  
Semi Arid

Organic Amendments in a Long-term Field Trial—Consequences for the Bulk Soil Bacterial Community as Revealed by Network Analysis

2017 ◽  
Vol 76 (1) ◽  
pp. 226-239 ◽  
Author(s):  
Christoph A. O. Schmid ◽  
Peter Schröder ◽  
Martin Armbruster ◽  
Michael Schloter
Keyword(s):  
Network Analysis ◽  
Bacterial Community ◽  
Field Trial ◽  
Organic Amendments ◽  
Soil Bacterial Community ◽  
Bulk Soil ◽  
Soil Bacterial ◽  
Term Field

Long-Term Field Trial to Control the Invasive Argentine Ant (Hymenoptera: Formicidae) With Synthetic Trail Pheromone

2010 ◽  
Vol 103 (5) ◽  
pp. 1784-1789 ◽  
Author(s):  
K. Nishisue ◽  
E. Sunamura ◽  
Y. Tanaka ◽  
H. Sakamoto ◽  
S. Suzuki ◽  
...  
Keyword(s):  
Field Trial ◽  
Trail Pheromone ◽  
Argentine Ant ◽  
Term Field

scholarly journals COCOA AND TOTAL SYSTEM YIELDS OF ORGANIC AND CONVENTIONAL AGROFORESTRY VS. MONOCULTURE SYSTEMS IN A LONG-TERM FIELD TRIAL IN BOLIVIA

2016 ◽  
Vol 53 (3) ◽  
pp. 351-374 ◽  
Author(s):  
M. SCHNEIDER ◽  
C. ANDRES ◽  
G. TRUJILLO ◽  
F. ALCON ◽  
P. AMURRIO ◽  
...  
Keyword(s):  
Field Trial ◽  
Production Systems ◽  
Management Practice ◽  
Block Design ◽  
Agroforestry Systems ◽  
Total System ◽  
Cocoa Production ◽  
Faster Development ◽  
Term Field

SUMMARYCocoa (Theobroma cacao L.) is produced in systems of varying complexity ranging from monoculture with temporary shade to highly diverse agroforests. Producers have to weigh high cocoa yields in the short to medium term in monocultures against higher total system yields in the short term and sustainable production systems in the long term in conjunction with ecosystem services in agroforestry systems (AFs). More long-term data on the comparative agronomic, economic and ecological performance of differently managed cocoa production systems is required to make sound recommendations to farmers. This paper describes the only long-term field trial worldwide comparing different cocoa production systems under conventional and organic management. The factors (i) crop diversity (monoculture vs. agroforestry), (ii) management practice (conventional vs. organic) and (iii) cultivar are being tested in a full-factorial, randomized complete block design with four replications. First, results showed significantly faster development of trunk circumferences in monocultures (+21%) compared to AFs. Cocoa yields were 47% lower in the organic compared to the conventional monoculture. In the AFs, however, the organic–conventional yield gap was less pronounced (−16%) and statistically insignificant. The cumulative yields of all products harvested were significantly higher in the AFs (+161%) compared to the monocultures. The productivity of cocoa by-crops in AFs may contribute to local food security and risk distribution in smallholder contexts.

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