Review of Eleusine Indica Weed as Heavy Metals Phytoremediator

Introduction: Weeds have been reported to be disadvantage in agriculture, however the advantage in the environment. The report of Eleusine indica weed as phytoremediation of heavy metals in ex-mining land is still relatively few. The article review was aimed to examine the mechanism of Eleusine indica weed in the phytoremediation of several heavy metals. Review results: Eleusine indica weed is classified as a hyperaccumulator plant because it was able to remediate several heavy metals. Based on previous research, Eleusine indica weed had the phytostabilization and phytoextraction mechanism in remediating several heavy metals

Application of Cow Manure Waste and Calcium Oxide Lime (CaO) on Growth and Yield of Cowpea Plant (Vigna Sinensis L.)

Introduction: The research was aimed to obtain an appropriate dose of cow manure waste, calcium oxide lime, and interactions in increasing the growth and yield of cowpea. Material and Methods: The research was conducted in Secanggang Village, Secanggang Subdistrict, Langkat District in June until September 2017. The research was conducted using the Randomized Block Design Factorial, the first factor (cow manure waste) dose of L0 = 0 ton.ha-1; L1 = 10 ton.ha-1; L2 = 20 ton.ha-1. The second factor (calcium oxide lime) dose of K0 = 0 ton.ha-1; K1 = 3 ton.ha-1; K2 = 6 ton.ha-1; and K3 = 9 ton.ha-1. Data were analyzed using the F and followed by DMRT at level 5% using IBM SPSS Statistics v.20 software. Results: The cow manure waste dosages of 10 until 20 ton.ha-1 significantly increased the plant height at 4 Weeks After Planting (WAP) and yield.plot-1 of cowpea ranged from 2.14 to 2.50% and 13.00 to 15.98%, respectively and the dose of 20 ton.ha-1 significantly increased the yield.sample-1 of 17.44% compared to untreated. The application of calcium oxide lime at the dose of 9 ton.ha-1 significantly increased the plant height of cowpea at 4 WAP of 2.46%, and the dose of 6 until 9 ton.ha-1 significantly increased the yield.sample-1 and yield.plot-1, however the highest was found in the dosage 6 ton.ha-1 of 13.51% and 20.16% compared to untreated. The interaction of cow manure waste with calcium oxide lime were not significant effect on growth and yield of cowpea

Characteristics of Growth and Yield for Wax Apple (Syzygium Samarangense) in the Application of Goat Manure and NASA Liquid Organic Fertilizer

Introduction: The research was aimed to obtain the dosage of NASA liquid organic fertilizer (LOF), goat manure (GM) and combinations are appropriate to support the growth and yield of wax apple. Materials and Methods: This research was conducted at Payaroba Street, Binjai City, North Sumatra Province from Juni to December 2018. This research used the randomized block design factorial within the first factor was NASA LOF (C0= 0 ml.l-1; C1= 1 ml.l-1; C2= 2 ml.l-1; C3= 3 ml.l-1 in water), and the second factor was GM (K0= 0 kg.polybag-1; K1= 0.5 kg.polybag-1; K2= 1.0 kg.polybag-1; K3= 1.5 kg.polybag-1) using three replications. Parameters were analyzed using the ANOVA and continued with the least significance different at rate of 5%. Results: GM significantly increased the plant height, stem diameter, number of flower, and fruit weight of wax apple along with increasing doses until 1.5 kg.polybag-1 of 11.76%; 16.70%; 12.90%; and 7.55% respectively, and accelerating the flowering of 2.98 days compared to un-treated. The application of NASA LOF significantly increased the plant height, stem diameter, and number of flower by wax apple along with increasing doses until 3 ml.l-1 water by 7.51%; 46.61%; and 11.04%, and accelerating the flowering of 5.16 days compared to un-treated. The combination of NASA LOF at 2 ml.l-1 water and GM at 1.5 kg.polybag-1 significantly increased the stem diameter by 52.89% compared to the control combination. However, it did not show a significant effect on plant height, flowering, number of flower, and fruit weight of wax apple

Fertilization the Omission One Test as Determination Limiting Factors for Maize Biomass (Zea Mays L.)

Introduction: The research was aimed to obtain information on the impact of omission one test fertilization as a determination limiting factors for the growth and biomass of maize in variety Bonanza F1. Materials and Methods: The research was located in the experimental field, Faculty of Agriculture and Animal Husbandry, Universitas Tjut Nyak Dhien, Medan from December 2020 until February 2021. The research was applied by Randomized Block Design in non-factorial through fertilization of omission one test that has been converted (urea : SP-36 : KCl = 0.75 : 0.50 : 0.125 g polybag-1). The treatment of this research include P0 = non-fertilization; P1= N+P+K; P2= P+K; P3= N+K; P4= N+P using three replications. The parameters include plant height, leaf growth, total fresh weight, total dry weight, and the percentage of relative yield then processed using ANOVA and continued with DMRT at 5% ± standard error with SPSS v.20 software. Results: Informed that the omission one test technique significantly improved all the characteristics of maize in the variety Bonanza F1. The highest increase in plant height was found in the N+P of 83.65%, meanwhile, the highest leaf and biomass growth characters were found in N+P+K, ranged of 50.00 to 177.81% and 487.60 to 507.37%, respectively. It was obtained that the limiting factor for the maize growth in variety Bonanza F1 was found in the un-fertilization of nitrogen

Influence of Foliar Application of Magnesium on Horticultural Crops: a Review

Introduction: Magnesium is very important nutrient and performs a significant part in development and formation of many sink organs like roots and seeds. Furthermore, its fertilization significantly affects yield and numerous physiological mechanisms in different horticulture crop species. Moreover, its deficiency caused germination and reduction in horticulture crop stand. Nevertheless, its adequate concentration by foliar application plays important role in biochemical and physiological processes of plants like proteins synthesis, metabolism of carbohydrates, enzymes activation and energy transferring. Worldwide, many of our horticulture crops are facing low yield and quality problem due to fertilizer application at inadequate rate. The current review focuses on the impact of foliar applied Mg on some important cultivated horticultural crops (sugar beet, tomato, banana, potato, spinach, cauliflower, cassava, garlic, green case, potus, cucumber and grapes). Review results: Our extensive review has demonstrated that magnesium is very important factor limiting horticulture crop production but its negative impacts can be reduced by foliar application of magnesium. Foliar application of Mg can be recommended for correcting deficiencies because foliar sprays have no long term residual effect and every time fresh applications must be given to each crop. Moreover, amount depends on the nutrient status of crop and soil