%0 Journal Article
%T Evaluation of Yield and Competition Indices for Intercropped Eight Maize Varieties, Soybean and Cowpea in the Zone of Savanna of South-West RD Congo
%A Pongi Khonde
%A Kabongo Tshiabukole
%A Mbuya Kankolongo
%A Stefan Hauser
%A Mumba Djamba
%A Kizungu Vumilia
%A Kabwe Nkongolo
%J Open Access Library Journal
%V 5
%N 1
%P 1-18
%@ 2333-9721
%D 2018
%I Open Access Library
%R 10.4236/oalib.1103746
%X
In order to enhance the legumes
potential advantages on the cereal yield in intercropping system by nitrogen
direct transfer from legume to cereal, an intercropping experiment was
conducted between eight maize varieties (07SADVE, 08SADVE 1, 09SADVE F2,
Mudishi 1, Mudishi 3, VP0523, ZM538 and Samaru), cowpea (Vigna unguiculata var. H4) and soybean (Glycine max var. Vuangi) during November 2011-February 2012 season
at INERA/Mvuazi in the south-western country of DR Congo. The experimental design
was a Split plot with four replications, twenty six treatments were applied
between maize varieties monocrops (40.000 plant¡¤ha©1) and legumes in
monoculture (360.000 plant¡¤ha©1) and both of sole planting were
combined. Evaluation of these soles planting was performed on basis of several
intercropping indices (MYE, LER, ATER, RCC, A and CR), the monetary advantage
index (MAI), Actual Yield Loss index (AYL) and intercropping index (IA). After
data analysis, competitivity indices indicated the higher yields advantages of
maize varieties in intercropping, especially Mudishi 3-soybean (MYE = 2836.300
kg¡¤ha©1). The equivalent land ratio (LER) varied with 08SADVE
1variety between 0.70 and 1.66 in cowpea and soybean intercrops respectively,
the Relative crowding coefficient (RCC) showed yield advantage of all intercrops
except with 09SADVE F2, Mudishi 1 and 07SADVE. Aggressivity (A) showed
dominance of maize in all intercrops, against the Competitive ratio (CR) showed
that the competitivity was stronger on cowpea (from 16.42 to 98.63) than
soybean (from 16.12 to 25.70). Actual yield loss (AYL) was negative in all
intercrops with cowpea and soybean. Thus, the
index of association (IA) informed that the negative values of the different
intercrops were due to the maize price (1000 CDF¡¤kg©1) and legumes
price (1500 CDF¡¤kg©1). Finally, the monetary advantage index (MAI =
922.92) and PCA had determined that intercrop with Mudishi 3-soybean as an
economic efficiency intercrop than others mixtures.
%K Intercropping
%K Maize
%K Legumes
%K LER
%K Monetary Advantage Index
%K DR Congo
%U http://www.oalib.com/paper/5287504