Narrow‐wide‐row planting pattern increases the radiation use efficiency and seed yield of intercrop species in relay‐intercropping system

By Muhammad Ali Raza, lingyang feng, W. van der Werf, G. R. Cai, M. Khalid, N. Iqbal, M. Hassan, T. A. Meraj, Muhammd Naeem, I. Khan and 5 more. Food and Energy Security, 2019

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Planting arrangements affect radiation use efficiency (RUE) and competitiveness of intercrop species in intercropping systems. Here, we reveal that narrow-wide-row planting arrangement in maize-soybean relay-intercropping system increases the dry matter and competitiveness of soybean, increased the RUE of maize and soybean, and compensates the yield loss of maize by substantially increasing the yield of soybean. In this field study, maize was planted with soybean in different planting arrangements (P1, 20:180, P2, 40:160; P3, 60:140, and P4, 80:120) of relay intercropping, all the relay-intercropping treatments were compared with sole crops of maize (SM) and soybean (SS). Results showed that P1 improved the total RUE 3.26 g/MJ (maize RUE + soybean RUE) of maize and soybean in relay-intercropping system. Compared to P4, treatment P1 increased the soybean competition ratio (CR) values (by 55%) but reduced the maize CR values (by 29%), which in turn significantly improved the yield of soybean by maintaining the maize yield. Generally, in P1, soybean produced 82% of SS yield, and maize produced 88% of SM yield, and it achieved the land equivalent ratio of 1.7. These results suggest that by maintaining the appropriate planting distances between maize and soybean we can improve the competitiveness and yield of intercrop species in relay-intercropping system.

Subfields: Agronomy and Crop Science, Forestry, Plant Science

View Paper: https://www.semanticscholar.org/paper/56bc8356960ff4fd34822ec45418ce81341c21c6

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Citations in the corpus

Revisiting intercropping indices with respect to potato-legume intercropping systems (2020, background): “On the other hand, the CRp was significantly higher than unity indicating a negative effect of potato on the companion legume (Willey and Rao, 1980; Dhima et al., 2007; Raza et al., 2019).”