EFFECT OF ORGANICS AND FOLIAR SPRAY OF HUMIC ACID ON YIELD, NUTRIENT UPTAKE AND QUALITY OF BRINJAL.
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Date
2023-01-12
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth Akola, Maharashtra
Abstract
The present investigation entitled, “Effect of organics and foliar spray of humic acid on yield, nutrient uptake and quality of brinjal” was conducted at Research farm, Department of Horticulture, and laboratory analysis was conducted at Department of Soil Science and Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during Rabi, 2021-22. The experiment was laid out in randomized block design with nine treatments and three replications. The objectives of the experiment were to assess the effect of organics and foliar spray of humic acid on growth and yield of brinjal and to study the effect of organics and foliar spray of humic acid on nutrient uptake and quality of brinjal. The treatments comprised of foliar sprays of @ 0.5%, 1% and 1.5% of humic acid in combination with FYM and NPS compost along with recommended dose of fertilizers.
The number of fruits, fruit length and fruit weight of brinjal were found to be significantly influenced with the application of organics and foliar spray of humic acid. The highest fruit weight and fruit length were recorded with the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of humic acid @ 1.5%. Higher number of fruits were recorded from the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of humic acid @ 1%. Quality parameters viz. ascorbic acid and chlorophyll content were significantly influenced by the application of organics and foliar spray of humic acid. Application of 100% RDF + FYM @ 5 t ha-1 + 4 sprays of humic acid @ 1% recorded significantly higher ascorbic acid content whereas application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of humic acid @ 1% recorded higher chlorophyll index. Flavonoid, anthocyanin and Nitrogen Balance Index were found be non-significantly influenced.
However, the yield of brinjal was significantly influenced by the application of organics and foliar spray of humic acid. Significantly higher fruit yield and straw yield was recorded with the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of humic acid @ 1.5%. The soil organic carbon and available nitrogen, phosphorus and sulphur status after harvest of the crop were found to be significantly influenced by the application of organics and foliar spray of humic acid. The highest soil organic carbon was recorded with application of 100% RDF + FYM @ 5 t ha-1 + 4 sprays of HA @1%. The significantly higher available N, P, K and S (191 kg ha-1, 16.98 kg ha-1, 332 kg ha-1 and 10.85 mg kg-1 respectively) were recorded with the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1.5%. Soil available micronutrients differed significantly with the application of organics and foliar spray of humic acid. 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1.5% recorded significantly highest zinc content (0.74 mg kg-1) and copper content (0.99 mg kg-1) while application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1%) recorded significantly highest iron content (6.67 mg kg-1) and manganese content (2.89 mg kg-1) in soil.
Nutrient uptake showed a significant difference among the treatments with the application of organics and foliar spray of humic acid. Application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1.5% recorded significantly higher total nitrogen, potassium and sulphur uptake while phosphorus showed significant increase with application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1%. Similarly total uptake of zinc and copper were found significantly higher with the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1.5% while iron and manganese recorded significantly higher values with the application of 100% RDF + NPS compost @ 2.5 t ha-1 + 4 sprays of HA @ 1%.
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THALLAPALLY MANIDEEPIKA.(2022).Effect of organics and foliar spray of humic acid on yield, nutrient uptake and quality of Brinjal. Department of soil science and agricultural chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2022. Print. xiv, 108p. (unpublished).