Quantifying the potential of 'on-farm' seed priming to increase crop performance in developing countries. A meta-analysis

作者: Javier Carrillo-Reche , Mario Vallejo-Marín , Richard S. Quilliam

DOI: 10.1007/S13593-018-0536-0

关键词:

摘要: Low-input agriculture in marginal areas of developing countries faces considerable challenges during crop development. A key stage growth is seed germination, which often constrained by abiotic factors such as low water potential, high temperatures and soil crusting, can result poor establishment. This exacerbated fertility, salinity, drought, pests diseases, ultimately leads to reduced yields. Over the last 20 years, potential ‘on-farm’ priming, a traditional, low-cost technique, consisting soaking seeds prior sowing, has been applied different crops conditions with varying degrees success. To understand significance this potentially transformative agronomic strategy, we have conducted global meta-analysis on-farm priming quantifying (i) rate emergence, (ii) final emergence (iii) total yield from 44 published papers on 17 across 10 countries. Our results show that significantly positive effect performance: emerge 22% faster, an increased 11%, yields 21% higher than conventionally sown seeds. Furthermore, sub-group analyses demonstrated more advantageous under stressful case studies categorized being either ‘nutrient deficient’, ‘salinity-stressed’ or ‘dry climates’ gaining highest improvements (22–28%). On-farm be particularly beneficial resource-poor farmers working low-input agricultural systems where limited intrinsically stressed environments. Here, demonstrate for first time perfectly adapted local situations provide evidence could effectively adopted strategy increase food security some most areas.

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