The biostimulant manufactured using diazotrophic endophytic bacteria and humates is effective to increase sugarcane yield
The biostimulant manufactured using diazotrophic endophytic bacteria and humates is effective to increase sugarcane yield
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DOI：
10.1186/s40538-017-0106-8
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发表时间：
2017-09-13
影响因子：
6.6
通讯作者：
Canellas, Luciano Pasqualoto
中科院分区：
文献类型：
--
作者：
da Silva, Silezio Ferreira;Olivares, Fabio Lopes;Canellas, Luciano Pasqualoto
背景资料：生物刺激剂在农业中的使用已显示出巨大的潜力，但需要更一致的田间结果才能被更广泛的农场接受。我们连续3年在甘蔗生产上评价了由植物生长促进菌与从蚯蚓粪中分离的腐殖酸类物质混合产生的生物刺激剂的不同施用方法。叶面喷施比沟施效果好，出苗后60 d喷施效果最好，因此与对照相比，茎产量提高了37%。在第一和第二个宿根中，生产力分别提高了5%和24%。第一个再生的特点是严重的干旱压力，袭击了所有的巴西东南部。此外，使用大地块面积的带状小区设计的测定证实了生物刺激剂在两个连续的宿根期间对甘蔗产量的促进作用，分别增加19%和18%，比对照多11吨/公顷和13吨/公顷。生物刺激剂的使用没有改变可溶性固形物含量和极化糖的甘蔗汁从这两个experiment.Conclusions：生物刺激剂与内生固氮菌和腐殖酸配制代表一种低成本的技术，增加甘蔗产量与经济使用的肥料，以提高作物产量。
Background: The use of biostimulants in agriculture has demonstrated great potential but more consistent field results are required for wider farm acceptance. We evaluated different delivering methods for the biostimulant produced with plant growth-promoting bacteria mixed with humic acid-like substances isolated from vermicompost in the commercial sugarcane crop yield during 3 consecutive years.Results: Foliar spray had a better performance than furrow application and the best result was obtained when the biostimulant was applied at 60 days after emergence, thus enhancing 37% of the stem yield when compared to control. In the first and second ratoons, the productivity increases 5 and 24%, respectively. The first ratoon was marked by severe drought stress that hit all the southeastern of Brazil. Moreover, the assay using strip plot design with a large parcel area confirms the promotion of sugarcane yields by biostimulant during two consecutive ratoons increasing 19 and 18% that represent 11 and 13 tons ha(-1) more than the control. The use of biostimulant did not change soluble solid content and polarizable sugars in the sugarcane juice obtained from both experiments.Conclusions: The biostimulant formulated with endophytic diazotrophic bacteria and humic acids represents a low-cost technology that increases the sugarcane yield with economic use of fertilizers to enhance crop yield.