The biological yield refers to the total dry matter accumulation of a plant system. Improved harvest index represents increased physiological capacity to mobilize photosynthates and translocate them into organs having economic yield.
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What is the difference between biological yield and economic yield?
Biological yield of a crop is the total plant biomass. Economic yield is the mass of desired product. The harvest index is calculated by dividing the dry mass of economic yield by the dry mass of biological yield.
How is biological yield calculated?
Finally the harvest index (HI) was calculated to determine the fraction of economically useful products of a plant in relation to its total productivity (grain to straw ratio) and calculated using following formula: HI = (EY/BY) x 100 Where; HI = Harvest Index, EY = Economic Yield (grain yield), BY = Biological Yield ( …
What is crop yield biology?
Definition. The amount of plant crop (such as cereal, grain or legume) harvested per unit area for a given time. Supplement. In agriculture, the crop yield is a measure of the grains or dry matter quantity in a particular area.
What does high yield mean biology?
The higher the yield and more intensive use of the farmland, the higher the productivity and profitability of a farm; this increases the well-being of farming families. Surplus crops beyond the needs of subsistence agriculture can be sold or bartered.
What is biological yield of maize?
Maximum biological yield (16277.78 kg ha-1) was recorded with the application of 180-210 kgNha-1. However maximum ear length (17.18 cm), grain ear-1 (411.32), grain yield (4888.9 kgha-1) and thousand grain weight (264.96 g) were observed with the application of 180kgNha-1.
What is an economic yield?
“Yield” refers to the earnings generated and realized on an investment over a particular period of time. It’s expressed as a percentage based on the invested amount, current market value, or face value of the security.
How do you calculate grain yield?
- Select an area that is representative of the paddock.
- Do this 5 times to get an average of the crop (A)
- Count the number of grains in at least 20 heads or pods and average (B)
- Using Table 1 determine the grain weight for the crop concerned (C)
- Yield in t/ha = (A × B × C) / 10,000.
What does the word yield mean in agriculture?
Crop yield is a standard measurement of the amount of agricultural production harvested—yield of a crop—per unit of land area. Crop yield is the measure most often used for cereal, grain, or legumes; and typically is measured in bushels, tons, or pounds per acre in the U.S.
What is straw yield?
The grain yield ranged from 875.2 to 1255 kg DM/ha with an average value of 1088 kg DM/ha. The grain yield of 333A and Lanjian No. 1 was significantly less than that of other improved varieties. The straw yield varied from 3154 to 5556 kg DM/ha. The least straw yield was observed for Lanjian No.
What is economic yield in crop management?
Economic or Agricultural Yield — The volume or weight per unit area of only those plant parts that have marketable value. It may refer to seed or grain yield for species like wheat or maize, leaf and stem yield for for- age species and root and tuber yield for beets and potatoes.
How does biological control increase crop yield?
Biological control is an alternative to using pesticides and involves using one species or biological agent to control the population size of another species. The organism used is called a biological control agent. By releasing a natural predator into the crop growing area, the number of pests can be reduced.
What determines crop yield?
‘Crop yield’ is the weight of grain or other economic product, at some agreed standard moisture content, per unit of land area harvested per crop (usually metric tons per hectare1, or here abbreviated to t/ha). Standard moisture content varies between crops but is 8–16% in grains.
What is difference between yield and production?
The difference between yield and production is that yield refers per area harvest and, production is total harvest measured in tonnes per hectare. Crop yields are the harvested production per unit of harvested area for crop products.
What is the difference between crop and yield?
The “crop” is what you’re growing. The “harvest” is bringing it in once it’s grown. The “yield” measures the size of the harvest in relation to various resources and inputs. One measure of yield might be the amount harvested (measured by weight or value) for each acre (or hectare) of land that you have used.
Which crop has the highest yield?
The highest yielding crops are sugar cane, sugar beet, and tomatoes. Sugar cane accounts for about 80% of the world’s sugar production, while sugar beet the remaining 20%.
Which farming method produces the greatest yield?
Intensive farming uses machines, fertilisers, man-power and high-yield crops to maximise the amount of food produced. Farmers growing arable crops often specialise in growing only one crop to maximise their profits. This is called monoculture . It can quickly reduce key nutrients in the soil and lowers biodiversity .
How do you calculate yield in maize?
The estimation of yield can be calculated using kernel weight at harvest, plot area harvested, plant density, and moisture content of grain at harvest. For instance, to get the full expression of maize yield potential, the plants must be at optimum density.
How do you calculate the yield of maize?
Yield (bushels per acre) equals (ear number) x (average row number) x (average kernel number) divided by 89.605* = bushels per acre. *or multiply by 0.01116.
What is the yield of maize per hectare?
Among the developed countries, average yields in the United States range around 6 tons per hectare. In the Republic of South Africa, where a large portion of the maize is produced on large-scale commercial farms, average yields range from less than 2 tons to almost 3 tons per hectare, depending on weather conditions.
What’s the definition of yields?
noun. Definition of yield (Entry 2 of 2) 1 : something yielded : product especially : the amount or quantity produced or returned yield of wheat per acre. 2 : the capacity of yielding produce.
What’s the difference between yield and return?
Yield is the amount an investment earns during a time period, usually reflected as a percentage. Return is how much an investment earns or loses over time, reflected as the difference in the holding’s dollar value.
Why do yields rise?
key takeaways A bond’s yield is based on the bond’s coupon payments divided by its market price; as bond prices increase, bond yields fall. Falling interest interest rates make bond prices rise and bond yields fall. Conversely, rising interest rates cause bond prices to fall, and bond yields to rise.
What influences agricultural yield?
Yield is influenced by climate and temperature, plant and water management, and soil nutrient management factors. Good genetics plus the ability to manipulate and optimize the plant’s environment generally result in the highest yields. Climate and temperature factors are critical to achieving high yields.
What is harvest yield?
The Harvesting Yield measures the quantity of harvested losses (short or long-term) during a given period, divided by the value of the portfolio at the beginning of the period.