Effective Rainfall Calculation Methods for Field Crops: An Overview, Analysis and New Formulation
Journal Title: Asian Research Journal of Agriculture - Year 2017, Vol 7, Issue 1
Abstract
Effective precipitation is important in irrigation scheduling decisions, is used to design new irrigation systems, and is a guiding factor for planning crop production practices. The methods for calculating effective rainfall for dry-land and wet-land crops were overviewed, analyzed and summarized in this paper. It is evident that the calculation methods have certain limitations, and also have merits and demerits. Performance of different methods was evaluated for effective rainfall of rice and deviations of results were found. As the methods are mostly empirical, such variation is expected other than the situation where they are developed/formulated. Process based formulation, particularly which considered crop ET, may suit under diverse situations. Under the current condition, Indian-1 and Japanese method estimated closer value, but may not yield better result under other conditions. The new formulation, which is based on the actual water expense, gave better/perfect estimation. New formulations pertinent to different practical/field situations are suggested, which will be useful for calculation of effective rainfall under different field and climatic conditions.
Authors and Affiliations
M. H. Ali, S. Mubarak
Keywords
Related Articles
- EP ID EP338073
- DOI 10.9734/ARJA/2017/36812
- Views 133
- Downloads 0
Growth Performance and Nutrient Digestibility of Red Sokoto Goats Fed Urea Treated Maize Stover Supplemented with Graded Levels of Balanites aegyptiaca Leaf Forage
Sixteen Red Sokoto male goats weighing on average 9.36±0.67 Kg were used for the experiment in a completely randomised design (CRD) for a duration of 12 weeks to determine the total feed intake, weight gain and apparent...
Estimation of Heterosis for Yield and Its Attributes in Brassica rapa L.
Six parents of Brassica rapa (L) viz. SAU Sarisha-1, SAU Sarisha-2, SAU Sarisha-3, BARI Sarisha-6, BARI Sarisha-15, and Tori-7 were crossed in a half diallel fashion. The resultant fifteen hybrids along with six parents...
Genetic Improvement of Rice in Nigeria for Enhanced Yeild and Grain Quality - A Review
The development of rice with high yield and grain quality is one of the main goals of rice breeding programs all over the world. In Nigeria, Rice breeders have been successful in improving the crop for different characte...
The Problem of Prickling on Fabrics of South American Camelids Fibers: Possible Approaches for Mechanical Solutions
In this minireview it is to analyze the physical attributes that determine the comfort of fabrics made of South American Camelid fibers (Lama and Alpaca), discuss the effect on their textile value and evaluate an possibl...
Effect of Different Levels of Phosphorus and Sulphur on Seed & Stover Yield of Soybean (Glycine max L. Merill) under ‘Eutrochrepts’
A field experiment was conducted at KVK, Srinagar during two consecutive kharif seasons of 2010 and 2011 to study the “Effect of phosphorus and sulphur on yield and quality of soybean (Glycine max L. Merill) under Eutroc...