Ambit determination method in estimating rice plant population density
Journal Title: Food Research - Year 2018, Vol 2, Issue 2
Abstract
Rice plant population density is a key indicator in determining the crop setting and fertilizer application rate. It is therefore essential that the population density is monitored to ensure that a correct crop management decision is taken. The conventional method of determining plant population is by manually counting the total number of rice plant tillers in a 25 cm x 25 cm square frame. Sampling is done by randomly choosing several different locations within a plot to perform tiller counting. This sampling method is time consuming, labour intensive and costly. An alternative fast estimating method was developed to overcome this issue. The method relies on measuring the outer circumference or ambit of the contained rice plants in a 25 cm x 25 cm square frame to determine the number of tillers within that square frame. Data samples of rice variety MR219 were collected from rice plots in the Muda granary area, Sungai Limau Dalam, Kedah. The data were taken at 50 days and 70 days after seeding (DAS). A total of 100 data samples were collected for each sampling day. A good correlation was obtained for the variety of 50 DAS and 70 DAS. The model was then verified by taking 100 samples with the latching strap for 50 DAS and 70 DAS. As a result, this technique can be used as a fast, economical and practical alternative to manual tiller counting. The technique can potentially be used in the development of an electronic sensing system to estimate paddy plant population density.
Authors and Affiliations
B. Abu Bakar, M. S. Abdul Rahman, C. C. Teoh, M. Z. K. Abdullah, R. Ismail
Effect of food additives on the quality of white shrimp (Litopenaeus vannamei)
The effects of three additives: sodium tripolyphosphate (STPP), sodium bicarbonate (NaHCO3) and microbial transglutaminase (MTGase) with the addition of 2% sodium chloride (NaCl) at different concentrations (2, 5 and 8%)...
Fortification of sunflower and palm oils using beta carotene extracted from Asystasia mysorensis and Solanum nigrum
In Kenya, indigenous vegetables such as Solanum nigrum (S. nigrum) and Asystasia mysorensis (A. mysorensis) are locally available but grossly underutilized. While the vegetables are a rich source of beta carotene (BC), a...
Physical, chemical and texture characteristics of Aro cheese
In 2016, Mexico’s total annual production of cheese was 375,181 tons. Cheese is widely consumed among all socioeconomic groups, and the decision to purchase this product is based on income, with a wide variety of cheeses...
Microbiological, chemical and nutritional quality and safety of salted cured fishery products from traditional dry fish processing plants in the Sultanate of Oman
Dry fish production has traditionally been practiced in the Sultanate of Oman since time immemorial and it is a thriving artisanal industry. Current production practices are very traditional lacking basic infrastructure...
Characteristics of crude cellulose from palm (Elaeis oleifera) midrib by sodium hydroxide pretreatment
The purpose of this research was to determine the effect of concentration of sodium hydroxide (NaOH) on physicochemical characteristics of cellulose powder extracted from palm midrib that was underutilized optimally. Cel...