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Literature Review Crop Modeling and Introduction a Simple Crop Model Le Huu Phuoc; Irfan Suliansyah; Feri Arlius; Irawati Chaniago; Nguyen Thi Thanh Xuan; Pham Van Quang
Journal of Applied Agricultural Science and Technology Vol. 7 No. 3 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i3.123

Abstract

Modeling science has been applied by many advanced countries in many fields, such as geology, meteorology, climate change, crop productivity, environment, erosion, and landslide. The crop model simulates the processes of agriculture. The writing of this article is descriptive qualitative using the Systematic Literature Review (SLR) method. So far, each model has its advantages and disadvantages but generally is based on the physiology of the growth and development of crops in relationship with soil, climate, solar radiation energy, and limiting factors to plant growth. There have been many models for rice that can forecast yield and biomass or predict future climate change dynamics. Meanwhile, many models such as DSSAT, AquaCrop, Oryza, APSIM, EPIC need more data to operate their modeling, which in many cases, data is not readily available. In this review, we would like to introduce the model “SIMPLE” which includes only thirteen parameters and four of which describe cultivar characteristics. Another advantage of “SIMPLE” is that it can be adapted for many crop species and added variable modules such as nutrient dynamics, water stress, temperature stress, or pests. It is entirely open source based on R programming, but limitations still exist that have been mentioned in the review.
PATHOGENITY TESTING OF THE MUSHROOMS Trichoderma spp. SOME PLANTATION LAND IN CONTROLLING Fusicoccum sp DISEASE OF TOBACCO PLANT Aisar Novita; Efrida Lubis; Le Huu Phuoc
International Journal of Biosciences and Biotechnology Vol 10 No 2 (2023): INTERNATIONAL JOURNAL OF BIOSCIENCES AND BIOTECHNOLOGY
Publisher : Central Laboratory for Genetic Resource and Molecular Biology, Faculty of Agriculture, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJBB.2023.v10.i02.p04

Abstract

Trichoderma is a soil saprophytic fungus that is naturally parasitic and attacks many types of plant disease-causing fungi or has a broad spectrum of control. This study aims to obtain superior isolates of the antagonist fungus Trichoderma sp from several plantations. This study used a non-factorial completely randomized design consisting of seven treatments with three replications. The treatments tested were: No Treatment (To); Trichoderma sp isolate from Langkat rubber (T1) Trichoderma sp isolate from Palm Oil Langkat (T2), Trichoderma sp isolate from Cocoa Langkat (T3), Trichoderma sp isolate from Percut oil palm (T4), Trichoderma sp isolate from Karo Coffee (T5), Trichoderma sp isolates from Karo cocoa (T6) Parameters observed were identification of the fungus Trichoderma sp., pathogenicity test on tobacco plants and percentage of pathogen inhibition. The results of both macroscopic and microscopic identification of Trichoderma sp isolates from rubber plantations in Langkat area (T1) showed that the highest percentage of inhibition and pathogenicity tests against Pussicoccum sp disease of tobacco plants showed negative results (no necrotic spots).