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Microalgal bioinoculants for sustainable agriculture and their interactions with soil biotic and abiotic components:A review

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Pedosphere 2024年第2期34卷 297-314页

作者： Shisy JOSE Nirmal RENUKA sachitra kumar ratha Sheena kumarI Faizal BUX Institute for Water and Wastewater Technology Durban University of TechnologyP.O.Box 1334Durban 4000South Africa Algal Biotechnology Laboratory Department of BotanyCentral University of PunjabBathinda 151401India Phycology Laboratory Council of Scientific and Industrial Research-National Botanical Research InstituteLucknowUttar Pradesh 226001India

Modern agricultural practices have posed a detrimental impact on the environment due to their intensive use to meet the food demands of an ever-increasing *** this context,microalgal bioinoculants,specifically cyanobacteria and green microalgae,have emerged as sustainable options for agricultural practices to improve soil organic carbon,nutrient availability,microbial quality,and plant *** overview of current and future perspectives on the use of microalgal bioinoculants in agriculture practices is presented in this review,along with a discussion of their interactions with soil biotic and abiotic factors that affect soil fertility,plant health,and crop *** benefits of microalgal bioinoculants include releasing agronomically important metabolites(exopolymers and phytohormones)as well as solubilizing soil ***,they function as biocontrol agents against soil-borne pathogens and facilitate the establishment of rhizosphere communities of agricultural *** far,very few studies have explored the basic mechanisms by which microalgal bioinoculants interact with soil biotic and abiotic *** recent years,advanced molecular techniques have contributed to a better understanding of these interactions.

关键词： biocontrol agent biofertilizer cyanobacteria microalgae microbial community molecular technique plant growth soil fertility

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Early Stage above Ground Interaction in Wheat-Jatropha Agrisilviculture System

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Journal of Agricultural Science and Technology 2010年第2期4卷 20-26页

作者： P. ratha Krishnan Pankaj kumar National Research Centre for Agroforestry Jhansi 284003 India Bundelkhand University Jhansi 284003 India

Experiments were conducted to analyze the initial tree crop interaction between Jatropha curcas and wheat by planting the perennial component in East-West orientation with 8-2 m distance and wheat as intercrop at National Research Centre for Agroforestry （NRCAF）, Jhansi during July, 2007 to April, 2009. During planting of Jatropha the interaction to wheat was non-significant and influence of orientation is also nil. Eighteen months after plating Jatropha had attained the mean height of 124.56 cm, collar diameter of 6.37 cm, number of branches of 11.25, canopy diameter of 98.5 cm and yielded 18.5 g seeds per plant. During 18 MAP also observations revealed the non-significant influence of Jatropha on wheat. Observations also indicated the progress in wheat growth and yield attributes with the increase of distances from tree base and it follow the order of 0.5 m〈1.0 m〈2.0 m〈3.0, 4.0 m and open. Nearly, 62% and 14% yield loss in wheat grain was observed at 0.5 m and lm distance from the tree base respectively compare with open. Comparison ofwheat-Jatropha agrisilviculture system and sole wheat cropping indicated the net grain yield reduction up to 13.5% by agrisilviculture system. The comparison of wheat and straw yields between the two years clearly indicating that the system and sole cropping have not much differed while the influence of climatic factor is witnessed by the variation of yields over years. It revealed that the initial above ground interaction between Jatropha and wheat was due to the space that can be managed by the pruning of branches which is a recommended cultural practice of Jatropha.

关键词： Wheat Jatropha curcas orientation distance interaction agrisilviculture

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