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Performance of soybean varieties differs according to yield class: a case study from Southern Brazil
Considering environmental conditions in the selection of soybean ( Glycine max L.) varieties is a key strategy in ensuring high crop yield. Recently, the new technology of multi-hybrid planters has been making it more practical for farmers to plant different varieties together. However, there remain...
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Published in: | Precision agriculture 2019-06, Vol.20 (3), p.520-540 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Considering environmental conditions in the selection of soybean (
Glycine max
L.) varieties is a key strategy in ensuring high crop yield. Recently, the new technology of multi-hybrid planters has been making it more practical for farmers to plant different varieties together. However, there remains a gap in understanding how different varieties perform in terms of yield class; this knowledge is essential for technology adoption. The objectives of this study were to: (i) evaluate the agronomic performance of six soybean varieties at varying yield class (YC); (ii) quantify the economic return of within-field varieties arrangement; and (iii) propose guidelines for multi-variety soybean planting in Southern Brazil. The experimental design comprised a factorial split-plot set up in a randomized complete block design, with three YC [low (LY), medium (MY) and high yielding (HY)] and six varieties, replicated three times. The main findings were: (a) soybean variety performance differed according to YC; (b) the farmer-selected variety performed well for HY and MY; (c) varieties with high plant height (PH) should be placed in LY, where PH reduction and an increase in the number of pods and yield were recorded; (d) varieties with low PH should be placed in HY, avoiding excessive plant growth and yield penalty; (e) within-field variety arrangement increased yield by 2.10% and 11.50% and economic return by US$ 26 and 137 ha
−1
for HY and LY, respectively. The results support the emergent concept of within-field multi-variety soybean planting in Southern Brazil. |
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ISSN: | 1385-2256 1573-1618 |
DOI: | 10.1007/s11119-018-9595-0 |