Biostimulants and crop responses: a review

被引:388
作者
Bulgari, R. [1 ]
Cocetta, G. [1 ]
Trivellini, A. [2 ]
Vernieri, P. [2 ]
Ferrante, A. [1 ]
机构
[1] Univ Milan, Dept Agr & Environm Sci Prod, I-20133 Milan, Italy
[2] Univ Pisa, Dept Sci Agr Alimentari & Agroambientali, I-56124 Pisa, Italy
关键词
floriculture crops; vegetables; nutrient use; sustainable agriculture; bedding plants; NUTRIENT SOLUTION CONCENTRATION; HUMIC-ACID; ASCOPHYLLUM-NODOSUM; ABIOTIC STRESS; PLANT-GROWTH; EXTRACT; TOLERANCE; QUALITY; YIELD; SUBSTANCES;
D O I
10.1080/01448765.2014.964649
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Agricultural growing practices have been evolving towards organic, sustainable or environmental friendly systems. The aim of modern agriculture is to reduce inputs without reducing the yield and quality. These goals can be achieved by breeding programmes but would be species specific and time consuming. The identification of organic molecules able to activate plant metabolism may allow an improvement in plant performance in a short period of time and in a cheaper way. Biostimulants are plant extracts and contain a wide range of bioactive compounds that are mostly still unknown. These products are usually able to improve the nutrient use efficiency of the plant and enhance tolerance to biotic and abiotic stresses. In this review, the state of the art and future prospects for biostimulants are reported and discussed. Moreover, particular attention has been paid to intensive agricultural systems such as horticultural and floricultural crops. In vegetables, the application of biostimulants allowed a reduction in fertilizers without affecting yield and quality. In leafy vegetables susceptible to nitrate accumulation, such as rocket, biostimulants have been able to improve the quality and keep the nitrates under the limits imposed by EU regulations. Moreover in leafy vegetables, biostimulants increased leaf pigments (chlorophyll and carotenoids) and plant growth by stimulating root growth and enhancing the antioxidant potential of plants. In floriculture, biostimulants used in bedding plant production stimulated the growth of plants, which reached the blooming and commercial stages earlier, thus optimizing space in the greenhouse.
引用
收藏
页码:1 / 17
页数:17
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