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A soil test is a laboratory or in-situ analysis to determine the chemical, physical or biological characteristics of a soil. Possibly the most widely conducted soil tests are those performed to estimate the plant-available concentrations of nutrients in order to provide fertilizer recommendations in agriculture.
The final characteristics of a soybean plant are variable, with factors such as genetics, soil quality, and climate affecting its form; however, fully mature soybean plants are generally between 50 and 125 cm (20 and 50 in) in height [9] and have rooting depths between 75 and 150 cm (30 and 60 in).
Ecocrop was a database used to determine the suitability of a crop for a specified environment. [1] Developed by the Food and Agriculture Organization of the United Nations (FAO) it provided information predicting crop viability in different locations and climatic conditions. [2]
No-till farming (also known as zero tillage or direct drilling) is an agricultural technique for growing crops or pasture without disturbing the soil through tillage.No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain.
There are generally two widely accepted versions of a postal code: a ZIP code and a ZIP + 4 code. Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS.
Optimal soil depth is between 50 and 100 cm, [11] with a light soil texture. [11] Soil fertility should be low [11] and soil pH is best suited between 5 and 6.5 [11] and should not be lower than 4.3 [11] or higher than 7. [11] Bambara groundnut is tolerant to salinity, but high sodium chloride concentration in the soil will result in yield losses.
The Land Suitability Classification is a soil evaluation method, developed by FAO. FAO stated that Land suitability is the fitness of a given type of land for a defined use. The land may be considered in its present condition or after improvements.
The erosion index (EI, also called the erodibility index) is created by dividing potential erosion (from all sources except gully erosion) by the T value, which is the rate of soil erosion above which long term productivity may be adversely affected.