Aplication of giberelins on flowering and yield of two varieties of shallot in lowland

Crops need nutrients to grow, develop, and produce yields, both in macro and micronutrients form. One of the essential macronutrients is phosphorus (P). Phosphorus is required by plants to produce plant biomass. Andisols are often used as agricultural lands in the highlands of the tropics. This soil type has high P retention and low available P. Andisol contains clay minerals with up to 97.8% P-retention. Therefore, this condition led to low P availability, but high total P in the soils. There was a tendency to increase the dose of inorganic fertilizers, especially P fertilizer in this area. A survey reported that shallot Andisol farmers applied P fertilizer about five times of shallot recommendation rate, however, the production has not increased, yet. The high rate of chemical fertilizers causes land degradation and environmental pollution. One of the solutions to increase phosphorus availability is by improving P solubility which increases P uptake by plants. Increasing P solubility is environmentally friendly and can be done by utilizing phosphate-solubilizing microbes which are often found in the plant rhizosphere. The use of phosphate-solubilizing microbes for plants today can be found in bio-fertilizers. This method could maintain soil health and give a good impact to the plant growth and production. This review would determine the use of phosphate-solubilizing microbes to manage P deficiency in Andisol soils. Some study cases about the effect of phosphate-solubilizing microbes on plant performances would also be addressed. Currently, it is hoped that farmers will begin to implement environmentally friendly agriculture by giving phosphate-solubilizing bio fertilizers to escalate available P and production.

Section: Plant Growth Promotormentioning

confidence: 99%

The role of rhizosphere microbes as phosphate solubilizing bio fertilizers in shallot: a review

Marpaung,

Susilowati,

Sopha

et al. 2023

“…This causes country fluctuating price and contributing to inflation from the agricultural sector [5]. Several factors cause low IOP Publishing doi:10.1088/1755-1315/1131/1/012017 2 productivity include low soil fertility, an increase in attack by plant pest organisms (OPT), changes in the microclimate and low quality seeds used [6].…”

Section: Introductionmentioning

confidence: 99%

Study of antibiosis of Streptomyces sp. from the land of shallot plants as biological agents of Fusariumsp. cause of Twisted diseases (Moler)

Suryaminarsih

Mujoko

Gusriyan

et al. 2023

The use of bio pesticides and organic pesticides from secondary metabolic filtrate of APH microorganisms is one of the food and horticulture cultivation technology packages which are the basis for this research objective. The research objective was to explore, isolate and identify of Streptomyces sp. in the land of shallot plants (Abm) and the antibiosis against the pathogens Fusariumsp cause of Moler shallot plant in vitro. Observer of Quality and quantity characteristics of secondary metabolites as antibiosis, The results showed that Streptomyces sp from land of shallot plant (Abm) isolates producing little antibiosis less able to inhibit the development of the pathogens Fusariumsp cause of Moler shallot plant in vitro. The identification of Actinomycetes spp. based on the morphology characteristic showed that Actinomycetes isolates are closely related with Streptomyces sp.

“…Planting shallots in wetlands is often constrained by low productivity. Low productivity of shallots in lowland is caused by temperature factors, the temperature needed by shallot to flowering < 18 °C, while the temperature in lowland ˃29 °C [6]. Another factor that affects the low productivity of shallots in lowland is the attack of plant diseases.…”

Section: Introductionmentioning

confidence: 99%

“…Another factor that affects the low productivity of shallots in lowland is the attack of plant diseases. The number of microorganisms, both pathogens and non-pathogens, is more common in lowland than in uland [6]. Moler disease is one of the important diseases in shallots [7].…”

Section: Introductionmentioning

confidence: 99%

Suppression of Moler Disease on Shallot by Ziram Fungicide in South Sumatera Lowland

Karenina¹,

Novriadhy²,

Defriyanti³

et al. 2022

Planting shallots in lowland is constrained by the attack of plant diseases. Moler is most important diseases in shallots. The study aims to know suppression of moler diseases by ziram fungicide. The study was conducted on three types lands (peatlands, freshwater swamps and top soil) and two treatments (ziram treated and untreated). The results showed that the application of ziram fungicides was able to suppress the attack of moler disease on shallots ranges from 93-100 percent.