Cultivation of cassava and cowpea in intercropping systems held in Roraima’s savannah, Brazil

Abstract

The objective of this work was to assess the cultivation of cassava and cowpea in different systems and arrangements of plants in Roraima's savannah, Brazil. The experiment was performed at the experimental field of the Department of Soil and Climate at the UFRR, Boa Vista (Roraima). The experimental design adopted was in randomized blocks, with seven treatments and four replications. The treatments were: 1) a single row of cassava in monoculture; 2) a single row of cassava plus a row of cowpea; 3) a double row of cassava in monoculture; 4) a double row of cassava plus a row of cowpea; 5) a double row of cassava plus two rows of cowpea; 6) a double row of cassava plus three rows of cowpea; and 7) cowpea in monoculture. For the cassava were assessed the following variables: yield of roots, fresh weight of shoot, harvest index, number of roots per plant, roots length, roots diameter, root dry matter, starch content and index of area equivalence. For the cowpea were assessed: yield of the grains (kg ha-1), number of pods per plant, number of seeds per pod, weight of 1000 seeds, and index of area equivalence. The double rows cropping systems of cassava with two and three rows of cowpea allow obtaining equivalent yield to the monoculture of cassava in single rows. The intercropping, regardless of the arrangement, reduces grain yield of cowpea. All treatments in intercropping systems exhibit a satisfactory area equivalence index, with an average of 1.55.

Desempenho agronômico de milho consorciado com feijãode-corda em diferentes populações e arranjos de plantas no semiárido mineiro

“…Esse resultado está de acordo com os obtidos por Viegas Neto et al (2012), em cultivo consorciado de milho pipoca e feijão-comum, Albuquerque et al (2012), em cultivo consorciado de mandioca e feijão-comum, e Albuquerque et al (2015), em cultivo consorciado de mandioca e feijão-caupi, no qual o feijão-caupi cultivado em sistema de consórcio apresentou menores rendimentos do que em monocultivo.…”

Planting Spacing of Cultivated Soybean Intercropped with Cover Plants

“…Productivity is closely linked to the production components of soybean and depends directly on the interaction of the genotype with the environment [14]. According to Albuquerque et al [15], Castagnara et al [16], Albuquerque et al [17] and Werner et al [3], large crops show higher yields in single crops.…”

Morpho-agronomic Characters Under Drought Stress and Genetic Diversity on the Local Landraces of Cowpea [Vigna unguiculata (L.) Walp] From East Nusa Tenggara Province, Indonesia

“…Cowpea also contributes to improving soil fertility through nitrogen fixation (Santos et al, 2017;Simunji et al, 2019). The inter-cropping and rotation systems of cowpea with other crop plants, such as cassava and cereals, consequently help to increase plant productivity (Dahmardeh et al, 2009;Albuquerque et al, 2015). Besides its high nutritional content and the ability for nitrogen fixation, cowpea also functions as a ground cover to protect the soil from erosion and to suppress weed growth and expansion (Inaizumi et al, 1999).…”