What question did this study set out to answer?

To evaluate the efficacy of combining biogas slurry nutrigation with reduced mineral fertilizer through drip irrigation on spinach growth, nutrient uptake, and soil enzyme dynamics.

June 26, 2023Open Access

A Greener Approach to Spinach Farming: Drip Nutrigation with Biogas Slurry Digestate

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To evaluate the efficacy of combining biogas slurry nutrigation with reduced mineral fertilizer through drip irrigation on spinach growth, nutrient uptake, and soil enzyme dynamics.
Conducted a field trial using a split-plot design with seven treatments: biogas slurry nutrigation alone (T1), combinations of biogas slurry with 40% (T2), 60% (T3), and 80% (T4) recommended dose of fertilizer (RDF), 100% RDF (T5), slurry broadcasting (T6), and an untreated control (T7).
Evaluated plant growth parameters, root length, biomass over two harvests, leaf macronutrient uptake (nitrogen, phosphorus, potassium), and soil microbial enzyme activities (dehydrogenase and alkaline/acid phosphatase).
Spinach treated with 80% RDF plus biogas slurry (T4) produced biomass equivalent to 100% RDF (T5) across both first (T4: 4.60 t/ha vs. T5: 4.67 t/ha) and second harvests (T4: 6.69 t/ha vs. T5: 6.89 t/ha), achieving optimum plant height and leaf count.
Root length was greatest under 100% RDF (T5) followed by 80% RDF plus biogas slurry (T4), with significant differences in leaf tissue observed for nitrogen and potassium concentrations, but not for phosphorus.
Biogas slurry application modulated microbial enzyme activities, equalizing the typically disparate baseline rates of alkaline and acid phosphatase in the soil.

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Implication

Field trial reveals combining biogas slurry with reduced mineral fertilizer sustains spinach yield and balances soil enzymes, suggesting an effective strategy to lower chemical inputs.

Cite This Study

Yadav et al. (2023) studied this question.

synapsesocial.com/papers/6a76add1de5e3adfbdf6bf1e https://doi.org/10.20944/preprints202306.1755.v1

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Implication

Field trial reveals combining biogas slurry with reduced mineral fertilizer sustains spinach yield and balances soil enzymes, suggesting an effective strategy to lower chemical inputs.

A Greener Approach to Spinach Farming: Drip Nutrigation with Biogas Slurry Digestate

Key Points

Discussion

Implication

Cite This Study

A Greener Approach to Spinach Farming: Drip Nutrigation with Biogas Slurry Digestate

Key Points

Discussion

Implication

Cite This Study

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