Humic acid, proteins & Microorganisms in Plant growth

The aim of the present study was to evaluate the potential of humus as carrier for PGPR isolates to improve the growth of crop plants. The NFB, PSB and KSB isolates separately and in combination were mixed with humus and cured. The shelf life of PGPR in the carrier based preparations were monitored upto 6 months and found to be maximum at 105th day for PSB & KSB and 120th day for NFB. At 180th day no growth was obtained. But the carrier incorporated with 10% sucrose showed microbial growth after 210 days. The effect of biofertilizer preparations were tested on brinjal seedlings at 7 treatments in 5 replications. Co-inoculated pots were reported with better growth rate when compared to control pots. The soil analysis showed significant increase in plant available nutrients in soils treated with coinoculation of NFB, PSB and KSB. From this study, it is concluded that humus can be used as an effective, ecofriendly and long lasting carrier for bioinoculum to be used as bioferlilizer to improve the growth of vegetable crops as well as soil fertility.

LEGUME RESEARCH - AN INTERNATIONAL JOURNAL

Background: Among the different grain legumes, blackgram [Vigna mungo (L.) Hepper)] is a well-known leguminous crop popular because of its nutritional quality and suitability for multiple cropping systems. Methods: A field experiment was conducted during Autumn season of 2018 and 2019 at Kalyani, Nadia to evaluate the effect of humic acid (HA) application on growth and yield of blackgram crop. The treatments were: Control (sowing of dry seed) (T1); Seed priming (soaking) in water (T2); Seed priming in 0.5% humic acid solution (T3); Seed priming in 1% humic acid solution (T4); Seed priming in 2% Humic acid solution (T5); Soil application of humic acid @1 kg/ha (T6); Soil application of humic acid @ 2 kg/ha (T7); Soil application of humic acid @1 kg/ha + 10 t compost/ha (T8); Soil application of humic acid @ 2 kg/ha + 10 t compost/ha (T9); Foliar application of 0.01% humic acid solution 25 days after sowing (DAS) (T10); Foliar application of 0.05% humic acid solution (25 DAS) (T11); F...

The future of Horticulture, 2021

Research Journal of Agricultural Sciences, 2023

An experiment was carried out to study the effect of humic acid, micronutrient mixture and growth regulators on yield attributes, yield and nutrient uptake of bhendi variety Arka anamika at Guddampatti village near Errabaiyahalli taluk, Dharmapuri district, Tamil Nadu. The experimental soil was sandy loam in texture. The field experiment was laid out in randomized block design consisting of nine treatments and replicated thrice. The treatments included with humic acid, micronutrients mixture and plant growth regulators along with recommended dose of fertilizers. A uniform NPK dose of 80:40:40 kg ha-1 was applied to all the plots through urea, SSP, MOP respectively. The results of the experiment revealed that application of humic acid @ 30 kg ha-1 + micronutrients mixture @ 50 ppm + growth regulators1 (Gibberellic acid @ 50 ppm) (T7) recorded maximum nitrogen uptake (375.18 kg ha-1), phosphorus uptake (22.80 kg ha-1), potassium uptake (285.32 kg ha-1), calcium uptake (20.46 kg ha-1), magnesium uptake (10.93 kg ha-1), sulphur uptake (18.76 kg ha-1), copper uptake (111.61 g ha-1), zinc uptake (674.71 g ha-1), iron uptake (1061.03 g ha-1), manganese uptake (311.95 g ha-1) and yield attributes and yield viz., number of fruits plant-1 (23), fruit length (20.35 cm) and fruit length (22.50 g), fruit yield (28.98 t ha-1) and stover yield (11.74 t ha-1). The minimum nutrient uptake, yield attributes and yield were recorded in control treatment (T1).

Soil and Environment, 2013

International Journal of Chemical Studies, 2020

2020

Russian Agricultural Sciences, 2019

International Journal of Current Microbiology and Applied Sciences, 2020

Bio stimulants are synthetic or natural substances which can be applied to soil, plants and seeds that cause change to structural or vital physiological processes to enhance plant growth by improving resistance to abiotic stresses and enhance seed or grain yield as well as quality of seeds. Bio stimulants such as humic acid and vermiwash have proven to be beneficial organic amendments to be used in the current scenario of increasing trend of organic farming. It has reduced the dependency on inorganic fertilisers in order to achieve sustainability without compromising the quality and quantity. Humic acid is a natural resource which can be used as an alternative for inorganic fertilisers. Humic acid is a naturally existing polymeric organic compound which is converted due to decay of organic matter and initiated in humus, peat as well as lignite (Sharif et al., 2002). Humic acid consist a combination of organic acids which are aromatic in nature and contain various heterogeneous funct...