TERRA : Journal of Land Restoration

The Effect of Eco Enzyme from Pineapple (Ananas comosus) Peel Waste on Soil pH, P Availability, Growth and Yield of Shallots (Allium cepa) in Ultisols

Nadya Angelina Tampubolon, Zainal Muktamar, M. Faiz Barchia — Sun, 17 Dec 2023 00:00:00 +0000

Ultisols have a main problem of high soil acidity, low organic matter, low macronutrients, and very low P availability which can affect plant growth and yield. This research aims to determine the dynamics of soil pH, and P availability and determine the concentration of pineapple peel-based eco enzyme that produces the highest shallots. This research was carried out using a Completely Randomized Design (CRD) with treatment concentrations of eco enzyme 20% (200 mL eco enzyme and 800 mL water), 40% (400 mL eco enzyme and 600 mL water), 60% (600 mL eco enzyme and 400 mL water), 80% (800 mL eco enzyme and 200 mL water), 100% (100% eco enzyme), without treatment/control, and NPK fertilizer treatment. The results showed that the application of eco enzyme at a concentration of 60% was a sufficient concentration to improve soil characteristics and shallot yield as indicated by soil pH of 6.58, soil P of 6.75 ppm, number of bulbs 3.21 and weight of bulbs 4.69 g, as well as the application of 100% eco enzyme to provide soil organic C amounted to 3.76% which was higher than other treatments.

Growth and Yield of Corn Plants Against Vermicompost Dosage in Degraded Ultisols

Ahmad Zikri, Widodo Widodo, Kartika Utami, Septiana Anggraini, Eko Suprijono — Sun, 17 Dec 2023 00:00:00 +0000

Ultisols has prominent weaknesses and problems such as high acidity levels, low water absorption capacity, and low nutrient content such as N, P, K, Ca, and Mg, so it has the potential to inhibit plant growth. One way to overcome Ultisols soil problems is to use vermicompost fertilizer. Corn is one of the plants that is suitable for cultivation using vermicompost fertilizer. The research aims to obtain the best dose of vermicompost for corn growth and yield in degraded Ultisol soil. The research was conducted in Sri Kuncoro Village, Pondok Kelapa District, Central Bengkulu Regency, Bengkulu Province. The design used a single-factor Complete Randomized Block Design (RCBD) consisting of 5 treatment levels and five replications to obtain 25 experimental plots of 0, 7.5, 15, 22.5, and 30 tons ha^-1. Data were analyzed using Analysis of Variance (ANOVA) at a 5% level and continued with the Least Significant Difference (LSD) test at a 5% level. The research results showed that the dose of vermicompost significantly affected the variables of plant height, number of leaves, number of leaves, and plant dry weight. The best vermicompost treatment dose was 22.5 tons ha^-1 with plant height 254.85 cm, number of leaves 13.26, stem diameter 24.90 mm, leaf area 811.49 cm² , cob length with husk 24, 93 cm, cob length without husk 17.26 cm, cob weight with husk 218.19 g, cob weight without husk 194.26 g, dry seed weight of plant samples 153.33 g and Dry seed weight per ha 9.1 tons.

Mapping the Distribution of Water Retention and Other Physical Properties of Soil on Intensive Agriculture Land in the Village Sumber Urip, Selupu Rejang District, Rejang Lebong Regency

Nathasya Vira Permata, Bandi Hermawan, Herry Gusmara — Sun, 17 Dec 2023 00:00:00 +0000

This research aims to map water availability on intensively cultivated agricultural land so that the land management method will be carried out appropriately. The method used to determine the sample points was the stratified sampling method, and 31 soil sample points were obtained. Soil samples are analyzed for their physical properties, which include soil texture, total pore space, bulk density, permeability, potential of free energy, and water content. The analysis results are presented as an overlay map of the measured variables. The research results show that agricultural land on a slope of 0-15% with a total area of 233 ha has good soil water retention in terms of the physical properties of the soil, so there is no need to improve soil management. Agricultural land on a slope of 15-25% with an area of 79 ha requires additional treatment to increase water retention by adding soil amendments to increase total soil pore space. Agricultural land on a slope of 25-45% with an area of 124 ha has excellent soil water retention supported by soil conservation practices in making terraces and installing plastic mulch. Meanwhile, agricultural land on a slope of >45% with an area of 33 ha has poor soil water retention, so soil conservation practices are needed.

Enhancing Entisols Physical Properties and Sweet Corn Agronomic Performances with Liquid Organic Fertilizer and Cow Manure

Sun, 17 Dec 2023 00:00:00 +0000

Entisols, comprising approximately 10.6% of Indonesia's land area, are youthful soils distinguished by sandy texture, loose structure, ample aeration porosity, rapid permeability, low water retention, and diminished organic matter. This study determines the optimal dosages of liquid organic fertilizer and cow manure capable of enhancing the physical attributes of Entisols and the growth and yield of sweet corn plants. Employing a Randomized Complete Block Design (RCBD) with two factors, the research evaluates three doses of cow manure (0 tons ha^-1, 5 tons ha^-1, and 10 tons ha^-1) and four concentrations of liquid organic fertilizer (0 mL L^-1, 100 mL L^-1, 200 mL L^-1, and 300 mL L^-1). The findings reveal that liquid organic fertilizer significantly influenced soil wet weight and pF pressure at 0.1 atm (12.68 g^-1). Application of cow manure demonstrates tangible improvements in Entisols properties, with water content at 12.15%, bulk density at 0.73 g m^-3, permeability at 90.57 cm hour^-1, and soil wet weight and pF pressure at 0.1 atm (15.10 g). Furthermore, liquid organic fertilizer contributes to a plant height of 176.82 cm and husk cob weight of 8,545 kg ha^-1, while cow manure results in a plant height of 174.05 cm and husk cob weight of 8.044 kg ha^-1. The optimal combination emerged with a 300 mL L^-1concentration of liquid organic fertilizer or a 10 tons ha^-1dose of cow manure, showcasing superior enhancements in Entisols' physical properties, as well as sweet corn plant growth and yield.

Optimizing Onion Growth on Coastal Land: Evaluating Various Manure Types and Dosages

Ayu Mia, Sumardi Sumardi, Hesti Pujiwati — Sun, 17 Dec 2023 00:00:00 +0000

The demand for onion in Indonesia has been on the rise. However, domestic production to date has not been able to meet all the needs of the people in Indonesia. This research aims to obtain the best type and dose of manure for the growth and production of shallots on coastal land. The design used in this research was a factorial Randomized Complete Block Design (RCBD) with 2 factors. The first factor is the type of manure which consists of 3 levels, namely: chicken manure, goat manure, and cow manure. The second factor is the dose of manure which consists of 4 levels, namely: 5, 10, 15, and 20 tons ha^-1 . A total of 12 treatment combinations were derived from the two factors, each repeated 3 times to create 36 experimental units. The results showed that the interaction between several types and doses of manure had a significant effect on the variables of plant height and number of leaves at 2 WAP, 3 WAP, 4 WAP, 5 WAP, and 6 WAP. The optimum dose of manure was 20 tons ha^-1 resulting in the highest average variable weight per plot of 142 g. The application of different types and dosages of manure did not significantly impact plant height, number of leaves, number of tillers, fresh weight of plants, fresh weight of tubers per hill, or weight per tuber.

Enhancing Leaf Potassium and Corn Yield in Degraded Ultisols with Vermicompost Fertilizer

Rina Sanjaya, Riwandi Riwandi, Hasanudin Hasanudin — Sun, 17 Dec 2023 00:00:00 +0000

The study addresses the constraints of Ultisols and underscores the need for vermicompost fertilizer application. The primary objective is to assess whether augmenting the quantity of vermicompost fertilizer enhances potassium (K) levels in leaves and subsequently boosts corn yields. The research spanned from June to December 2022 in Sri Kuncoro Village, Pondok Kelapa District, Central Bengkulu Regency. Employing a Randomized Complete Block Design (RCBD) with 5 treatment levels and 5 replications resulted in 25 plots, encompassing doses of 0, 7.5, 13, 22.5, and 30 tons per hectare. Upon analyzing the data, it is evident that applying vermicompost fertilizer at a rate of 30 tons per hectare leads to a 1.4093% increase in leaf K levels, a K uptake of 3.2035 g tons-1, and a dry stover weight of 232.351 g tons^-1. However, there is no significant evidence indicating an increase in root dry weight, shoot dry weight, cob weight without husk, and dry shell weight

Efficiency of Inorganic Fertilizer Utilization with Biofertilizer on the Growth and Production of Soybeans (Glycine max (L). Merrill.)

Sun, 17 Dec 2023 00:00:00 +0000

Soybeans (Glycine max (L). Merrill.) are an important source of protein in Indonesia whose supply is still very low. One of the causes is low soil fertility so it needs to be fertilized. Continuous fertilization using inorganic fertilizers turns out to have a sustainable effect, namely increasing soil damage, so it needs to be made more efficient with biological fertilizers. The research aims to determine the response of soybean plants to the application of biological fertilizer as an efficient use of inorganics. The research was carried out in Lengkong Poncol Village RT/RW 001/011 Wetan, Serpong District, South Tangerang at an altitude of ± 25 m above sea level from January 2020 to April 2020. The research used a randomized complete group design (RKLT) with five treatments, as follows: NPK 100%, NPK 75% + Biofertilizer 100 ml, NPK 50% + Biofertilizer 100 ml, NPK 25% + Biofertilizer 100 ml, and Biofertilizer 100 ml. Observations were made on plant growth and soil analysis. The results of the research showed that the use of biological fertilizer to make the use of NPK fertilizer more efficient did not have a real effect on plant growth. It can be seen that the use of biological fertilizer by making NPK fertilizer more efficient gave the same results as using 100% NPK fertilizer and using 75% NPK fertilizer + fertilizer. biological 100 ml/plant affects plant height, pH value, and soil nitrogen content.