Biochar is a heterogeneous product formed during the thermochemical decomposition of biomasses. The use of biochar is considered a potential and sustainable mean to mitigate climate change via carbon sequestration and to increase agronomic productivity of crops through soil quality enhancement. Here, we synthesize the current knowledge about the physical and chemical properties of biochar and the positive and/or negative effects of its application on soil fertility, fruit plant growth, and crop productivity. We review data on growth responses of fruit crops to biochar additions, by examining variability in response among species, and respect to experiment duration and type. Very few studies have examined the effects of biochar in temperate agroecosystems and in woody perennial plants. At our knowledge, as reported by many works, the best agronomic responses with addition of biochar have been obtained in tropical agricultural soils, in acid and sandy soils, and for annual plants. Although in some cases biochar could improve crop production, it is not a panacea. Long-term experiments and knowledge of the underlying mechanisms for these processes are needed to ensure optimum crop yield and agricultural sustainability in temperate agroecosystems too.
Role of biochars in soil fertility management of fruit crops
Petruccelli R.
;Di Lonardo S.
2019
Abstract
Biochar is a heterogeneous product formed during the thermochemical decomposition of biomasses. The use of biochar is considered a potential and sustainable mean to mitigate climate change via carbon sequestration and to increase agronomic productivity of crops through soil quality enhancement. Here, we synthesize the current knowledge about the physical and chemical properties of biochar and the positive and/or negative effects of its application on soil fertility, fruit plant growth, and crop productivity. We review data on growth responses of fruit crops to biochar additions, by examining variability in response among species, and respect to experiment duration and type. Very few studies have examined the effects of biochar in temperate agroecosystems and in woody perennial plants. At our knowledge, as reported by many works, the best agronomic responses with addition of biochar have been obtained in tropical agricultural soils, in acid and sandy soils, and for annual plants. Although in some cases biochar could improve crop production, it is not a panacea. Long-term experiments and knowledge of the underlying mechanisms for these processes are needed to ensure optimum crop yield and agricultural sustainability in temperate agroecosystems too.File | Dimensione | Formato | |
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